java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cc990c [2018-10-01 01:08:36,493 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-01 01:08:36,495 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-01 01:08:36,510 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-01 01:08:36,510 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-01 01:08:36,512 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-01 01:08:36,514 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-01 01:08:36,517 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-01 01:08:36,520 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-01 01:08:36,521 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-01 01:08:36,522 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-01 01:08:36,522 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-01 01:08:36,523 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-01 01:08:36,524 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-01 01:08:36,525 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-01 01:08:36,526 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-01 01:08:36,527 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-01 01:08:36,529 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-01 01:08:36,531 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-01 01:08:36,533 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-01 01:08:36,534 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-01 01:08:36,535 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-01 01:08:36,538 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-01 01:08:36,547 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-10-01 01:08:36,564 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-01 01:08:36,564 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-01 01:08:36,565 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-01 01:08:36,565 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-01 01:08:36,566 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-01 01:08:36,566 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-01 01:08:36,567 INFO L133 SettingsManager]: * Use SBE=true [2018-10-01 01:08:36,567 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-01 01:08:36,567 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-01 01:08:36,567 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-01 01:08:36,567 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-01 01:08:36,568 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-01 01:08:36,568 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-01 01:08:36,568 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-01 01:08:36,568 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-01 01:08:36,569 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-01 01:08:36,569 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-01 01:08:36,569 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-01 01:08:36,569 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-01 01:08:36,570 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-01 01:08:36,570 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-01 01:08:36,570 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-01 01:08:36,570 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-01 01:08:36,570 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-01 01:08:36,571 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-01 01:08:36,571 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-01 01:08:36,571 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-01 01:08:36,571 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-01 01:08:36,572 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-01 01:08:36,572 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-01 01:08:36,572 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-01 01:08:36,622 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-01 01:08:36,639 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-01 01:08:36,645 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-01 01:08:36,647 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-01 01:08:36,648 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-01 01:08:36,648 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg.bpl [2018-10-01 01:08:36,649 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg.bpl' [2018-10-01 01:08:36,702 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-01 01:08:36,706 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-01 01:08:36,707 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-01 01:08:36,707 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-01 01:08:36,707 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-01 01:08:36,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:08:36" (1/1) ... [2018-10-01 01:08:36,745 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:08:36" (1/1) ... [2018-10-01 01:08:36,750 WARN L165 Inliner]: Program contained no entry procedure! [2018-10-01 01:08:36,750 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-10-01 01:08:36,750 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-10-01 01:08:36,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-01 01:08:36,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-01 01:08:36,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-01 01:08:36,754 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-01 01:08:36,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:08:36" (1/1) ... [2018-10-01 01:08:36,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:08:36" (1/1) ... [2018-10-01 01:08:36,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:08:36" (1/1) ... [2018-10-01 01:08:36,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:08:36" (1/1) ... [2018-10-01 01:08:36,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:08:36" (1/1) ... [2018-10-01 01:08:36,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:08:36" (1/1) ... [2018-10-01 01:08:36,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:08:36" (1/1) ... [2018-10-01 01:08:36,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-01 01:08:36,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-01 01:08:36,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-01 01:08:36,781 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-01 01:08:36,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:08:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-01 01:08:36,861 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-10-01 01:08:36,861 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-01 01:08:36,862 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-01 01:08:37,038 INFO L345 CfgBuilder]: Using library mode [2018-10-01 01:08:37,039 INFO L202 PluginConnector]: Adding new model Luxembourg.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.10 01:08:37 BoogieIcfgContainer [2018-10-01 01:08:37,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-01 01:08:37,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-01 01:08:37,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-01 01:08:37,045 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-01 01:08:37,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:08:36" (1/2) ... [2018-10-01 01:08:37,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e4498f0 and model type Luxembourg.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.10 01:08:37, skipping insertion in model container [2018-10-01 01:08:37,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.10 01:08:37" (2/2) ... [2018-10-01 01:08:37,048 INFO L112 eAbstractionObserver]: Analyzing ICFG Luxembourg.bpl [2018-10-01 01:08:37,059 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-01 01:08:37,067 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-01 01:08:37,116 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-01 01:08:37,117 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-01 01:08:37,117 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-01 01:08:37,118 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-01 01:08:37,118 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-01 01:08:37,118 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-01 01:08:37,118 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-01 01:08:37,118 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-01 01:08:37,119 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-01 01:08:37,134 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-10-01 01:08:37,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-10-01 01:08:37,141 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:37,142 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-10-01 01:08:37,143 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:37,150 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:37,151 INFO L82 PathProgramCache]: Analyzing trace with hash 30048, now seen corresponding path program 1 times [2018-10-01 01:08:37,153 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:37,156 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:37,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:37,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:08:37,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:37,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:37,337 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-01 01:08:37,338 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-01 01:08:37,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-01 01:08:37,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-01 01:08:37,355 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:37,357 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-10-01 01:08:37,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:37,556 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2018-10-01 01:08:37,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-01 01:08:37,558 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-10-01 01:08:37,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:37,570 INFO L225 Difference]: With dead ends: 13 [2018-10-01 01:08:37,570 INFO L226 Difference]: Without dead ends: 5 [2018-10-01 01:08:37,573 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-10-01 01:08:37,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-10-01 01:08:37,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-10-01 01:08:37,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-01 01:08:37,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-10-01 01:08:37,608 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-10-01 01:08:37,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:37,609 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-10-01 01:08:37,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-01 01:08:37,609 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-10-01 01:08:37,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-01 01:08:37,610 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:37,610 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-01 01:08:37,610 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:37,610 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:37,611 INFO L82 PathProgramCache]: Analyzing trace with hash 927622, now seen corresponding path program 1 times [2018-10-01 01:08:37,611 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:37,611 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:37,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:37,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:08:37,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:37,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:37,695 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:37,696 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:37,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:08:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:37,731 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:37,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:37,777 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:37,777 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-01 01:08:37,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-01 01:08:37,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-01 01:08:37,778 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:37,778 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-10-01 01:08:37,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:37,875 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-10-01 01:08:37,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-01 01:08:37,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-10-01 01:08:37,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:37,877 INFO L225 Difference]: With dead ends: 8 [2018-10-01 01:08:37,877 INFO L226 Difference]: Without dead ends: 6 [2018-10-01 01:08:37,879 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-10-01 01:08:37,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-10-01 01:08:37,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-10-01 01:08:37,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-10-01 01:08:37,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-10-01 01:08:37,885 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-10-01 01:08:37,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:37,885 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-10-01 01:08:37,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-01 01:08:37,890 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-10-01 01:08:37,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-01 01:08:37,890 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:37,890 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-10-01 01:08:37,891 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:37,891 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:37,891 INFO L82 PathProgramCache]: Analyzing trace with hash 28752416, now seen corresponding path program 2 times [2018-10-01 01:08:37,891 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:37,892 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:37,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:37,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:08:37,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:37,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:37,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:37,954 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:37,954 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:37,970 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:08:37,981 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:08:37,981 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:37,983 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:38,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:38,029 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:38,029 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-01 01:08:38,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-01 01:08:38,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-01 01:08:38,030 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:38,030 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states. [2018-10-01 01:08:38,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:38,180 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-10-01 01:08:38,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-01 01:08:38,181 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-10-01 01:08:38,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:38,182 INFO L225 Difference]: With dead ends: 9 [2018-10-01 01:08:38,182 INFO L226 Difference]: Without dead ends: 7 [2018-10-01 01:08:38,183 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-10-01 01:08:38,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-01 01:08:38,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-01 01:08:38,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-01 01:08:38,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-01 01:08:38,187 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-10-01 01:08:38,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:38,187 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-01 01:08:38,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-01 01:08:38,188 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-01 01:08:38,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-01 01:08:38,188 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:38,188 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-10-01 01:08:38,189 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:38,189 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:38,189 INFO L82 PathProgramCache]: Analyzing trace with hash 891321030, now seen corresponding path program 3 times [2018-10-01 01:08:38,189 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:38,190 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:38,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:38,191 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:38,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:38,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:38,412 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:38,413 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:38,413 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:38,424 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:08:38,436 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-01 01:08:38,437 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:38,438 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:38,469 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:38,489 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:38,490 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-01 01:08:38,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-01 01:08:38,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-01 01:08:38,491 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:38,491 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-10-01 01:08:38,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:38,590 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-10-01 01:08:38,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-01 01:08:38,590 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-10-01 01:08:38,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:38,591 INFO L225 Difference]: With dead ends: 10 [2018-10-01 01:08:38,591 INFO L226 Difference]: Without dead ends: 8 [2018-10-01 01:08:38,592 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:08:38,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-10-01 01:08:38,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-10-01 01:08:38,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-10-01 01:08:38,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-10-01 01:08:38,595 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-10-01 01:08:38,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:38,595 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-10-01 01:08:38,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-01 01:08:38,596 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-10-01 01:08:38,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-01 01:08:38,596 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:38,596 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2018-10-01 01:08:38,597 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:38,597 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:38,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1861144288, now seen corresponding path program 4 times [2018-10-01 01:08:38,597 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:38,597 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:38,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:38,598 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:38,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:38,678 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:38,679 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:38,679 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:38,688 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:08:38,723 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:08:38,724 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:38,725 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:38,824 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:38,845 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:38,846 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-01 01:08:38,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-01 01:08:38,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-01 01:08:38,847 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:38,847 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2018-10-01 01:08:38,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:38,915 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-01 01:08:38,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-01 01:08:38,916 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-10-01 01:08:38,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:38,917 INFO L225 Difference]: With dead ends: 11 [2018-10-01 01:08:38,917 INFO L226 Difference]: Without dead ends: 9 [2018-10-01 01:08:38,917 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 01:08:38,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-01 01:08:38,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-01 01:08:38,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-01 01:08:38,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-01 01:08:38,921 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-10-01 01:08:38,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:38,922 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-01 01:08:38,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-01 01:08:38,922 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-01 01:08:38,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-01 01:08:38,922 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:38,922 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2018-10-01 01:08:38,923 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:38,923 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:38,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1860894214, now seen corresponding path program 5 times [2018-10-01 01:08:38,923 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:38,923 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:38,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:38,924 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:38,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:38,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:39,007 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:39,007 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:39,007 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:39,016 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:08:39,028 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-10-01 01:08:39,029 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:39,030 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:39,059 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:39,082 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:39,082 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-01 01:08:39,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-01 01:08:39,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-01 01:08:39,083 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:39,083 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 8 states. [2018-10-01 01:08:39,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:39,507 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-10-01 01:08:39,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-01 01:08:39,508 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-10-01 01:08:39,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:39,509 INFO L225 Difference]: With dead ends: 12 [2018-10-01 01:08:39,509 INFO L226 Difference]: Without dead ends: 10 [2018-10-01 01:08:39,509 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-10-01 01:08:39,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-01 01:08:39,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-01 01:08:39,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-01 01:08:39,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-10-01 01:08:39,512 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-10-01 01:08:39,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:39,512 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-10-01 01:08:39,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-01 01:08:39,513 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-10-01 01:08:39,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-01 01:08:39,513 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:39,513 INFO L375 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2018-10-01 01:08:39,514 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:39,514 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:39,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1853141920, now seen corresponding path program 6 times [2018-10-01 01:08:39,514 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:39,515 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:39,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:39,516 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:39,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:39,708 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:39,708 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:39,711 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:39,724 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:08:39,734 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-10-01 01:08:39,734 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:39,735 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:39,774 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:39,796 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:39,797 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-01 01:08:39,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-01 01:08:39,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-01 01:08:39,797 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:39,798 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states. [2018-10-01 01:08:39,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:39,909 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-01 01:08:39,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-01 01:08:39,909 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2018-10-01 01:08:39,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:39,910 INFO L225 Difference]: With dead ends: 13 [2018-10-01 01:08:39,910 INFO L226 Difference]: Without dead ends: 11 [2018-10-01 01:08:39,910 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:08:39,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-01 01:08:39,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-01 01:08:39,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-01 01:08:39,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-01 01:08:39,915 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-10-01 01:08:39,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:39,915 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-01 01:08:39,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-01 01:08:39,915 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-01 01:08:39,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-01 01:08:39,916 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:39,916 INFO L375 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2018-10-01 01:08:39,916 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:39,916 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:39,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1612820806, now seen corresponding path program 7 times [2018-10-01 01:08:39,917 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:39,917 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:39,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:39,918 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:39,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:40,029 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:40,030 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:40,030 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:40,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:08:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:40,048 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:40,117 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:40,139 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:40,139 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-01 01:08:40,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-01 01:08:40,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-01 01:08:40,140 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:40,140 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-10-01 01:08:40,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:40,222 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-10-01 01:08:40,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-01 01:08:40,223 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2018-10-01 01:08:40,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:40,224 INFO L225 Difference]: With dead ends: 14 [2018-10-01 01:08:40,224 INFO L226 Difference]: Without dead ends: 12 [2018-10-01 01:08:40,225 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 01:08:40,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-01 01:08:40,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-01 01:08:40,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-01 01:08:40,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-01 01:08:40,228 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-10-01 01:08:40,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:40,228 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-01 01:08:40,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-01 01:08:40,229 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-01 01:08:40,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-01 01:08:40,229 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:40,229 INFO L375 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2018-10-01 01:08:40,230 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:40,230 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:40,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1542166432, now seen corresponding path program 8 times [2018-10-01 01:08:40,230 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:40,230 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:40,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:40,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:08:40,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:40,350 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:40,350 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:40,350 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:40,362 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:08:40,372 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:08:40,372 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:40,374 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:40,428 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:40,449 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:40,449 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-01 01:08:40,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-01 01:08:40,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-01 01:08:40,450 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:40,450 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-10-01 01:08:40,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:40,622 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-01 01:08:40,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-01 01:08:40,623 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2018-10-01 01:08:40,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:40,623 INFO L225 Difference]: With dead ends: 15 [2018-10-01 01:08:40,623 INFO L226 Difference]: Without dead ends: 13 [2018-10-01 01:08:40,623 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 01:08:40,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-01 01:08:40,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-01 01:08:40,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-01 01:08:40,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-01 01:08:40,626 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-10-01 01:08:40,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:40,626 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-01 01:08:40,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-01 01:08:40,627 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-01 01:08:40,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-01 01:08:40,627 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:40,627 INFO L375 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2018-10-01 01:08:40,628 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:40,628 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:40,628 INFO L82 PathProgramCache]: Analyzing trace with hash -562523002, now seen corresponding path program 9 times [2018-10-01 01:08:40,628 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:40,628 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:40,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:40,629 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:40,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:40,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:40,861 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:40,862 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:40,862 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:40,870 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:08:40,881 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-10-01 01:08:40,881 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:40,883 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:40,926 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:40,947 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:40,948 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-01 01:08:40,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-01 01:08:40,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-01 01:08:40,949 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:40,949 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 12 states. [2018-10-01 01:08:41,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:41,027 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-10-01 01:08:41,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-01 01:08:41,027 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2018-10-01 01:08:41,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:41,028 INFO L225 Difference]: With dead ends: 16 [2018-10-01 01:08:41,028 INFO L226 Difference]: Without dead ends: 14 [2018-10-01 01:08:41,029 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:08:41,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-01 01:08:41,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-01 01:08:41,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-01 01:08:41,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-01 01:08:41,033 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-10-01 01:08:41,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:41,033 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-01 01:08:41,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-01 01:08:41,034 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-01 01:08:41,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-01 01:08:41,034 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:41,034 INFO L375 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2018-10-01 01:08:41,034 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:41,035 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:41,035 INFO L82 PathProgramCache]: Analyzing trace with hash -258347744, now seen corresponding path program 10 times [2018-10-01 01:08:41,035 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:41,035 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:41,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:41,036 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:41,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:41,139 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:41,139 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:41,139 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:41,149 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:08:41,160 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:08:41,161 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:41,162 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:41,211 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:41,231 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:41,232 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-01 01:08:41,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-01 01:08:41,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-01 01:08:41,232 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:41,233 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-10-01 01:08:41,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:41,316 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-01 01:08:41,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-01 01:08:41,316 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-10-01 01:08:41,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:41,317 INFO L225 Difference]: With dead ends: 17 [2018-10-01 01:08:41,318 INFO L226 Difference]: Without dead ends: 15 [2018-10-01 01:08:41,318 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 01:08:41,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-01 01:08:41,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-01 01:08:41,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-01 01:08:41,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-01 01:08:41,322 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-10-01 01:08:41,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:41,322 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-01 01:08:41,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-01 01:08:41,322 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-01 01:08:41,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-01 01:08:41,323 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:41,323 INFO L375 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2018-10-01 01:08:41,323 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:41,323 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:41,324 INFO L82 PathProgramCache]: Analyzing trace with hash 581150662, now seen corresponding path program 11 times [2018-10-01 01:08:41,324 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:41,324 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:41,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:41,325 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:41,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:41,507 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:41,508 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:41,508 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:41,516 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:08:41,550 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-01 01:08:41,551 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:41,552 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:41,597 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:41,617 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:41,617 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-01 01:08:41,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-01 01:08:41,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-01 01:08:41,618 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:41,618 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 14 states. [2018-10-01 01:08:41,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:41,718 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-10-01 01:08:41,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-01 01:08:41,718 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2018-10-01 01:08:41,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:41,719 INFO L225 Difference]: With dead ends: 18 [2018-10-01 01:08:41,719 INFO L226 Difference]: Without dead ends: 16 [2018-10-01 01:08:41,720 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 01:08:41,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-01 01:08:41,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-01 01:08:41,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-01 01:08:41,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-10-01 01:08:41,723 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-10-01 01:08:41,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:41,723 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-10-01 01:08:41,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-01 01:08:41,724 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-10-01 01:08:41,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-01 01:08:41,724 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:41,724 INFO L375 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2018-10-01 01:08:41,724 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:41,725 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:41,725 INFO L82 PathProgramCache]: Analyzing trace with hash 835797472, now seen corresponding path program 12 times [2018-10-01 01:08:41,725 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:41,725 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:41,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:41,726 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:41,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:41,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:41,835 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:41,835 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:41,836 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:41,845 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:08:41,858 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-01 01:08:41,859 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:41,861 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:41,918 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:41,946 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:41,946 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-10-01 01:08:41,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-01 01:08:41,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-01 01:08:41,947 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:41,947 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 15 states. [2018-10-01 01:08:42,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:42,053 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-01 01:08:42,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-01 01:08:42,054 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2018-10-01 01:08:42,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:42,054 INFO L225 Difference]: With dead ends: 19 [2018-10-01 01:08:42,055 INFO L226 Difference]: Without dead ends: 17 [2018-10-01 01:08:42,055 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 01:08:42,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-01 01:08:42,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-01 01:08:42,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-01 01:08:42,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-01 01:08:42,060 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-10-01 01:08:42,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:42,060 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-01 01:08:42,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-01 01:08:42,060 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-01 01:08:42,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-01 01:08:42,061 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:42,061 INFO L375 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2018-10-01 01:08:42,061 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:42,061 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:42,061 INFO L82 PathProgramCache]: Analyzing trace with hash 139913990, now seen corresponding path program 13 times [2018-10-01 01:08:42,061 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:42,062 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:42,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:42,062 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:42,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:42,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:42,197 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:42,198 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:42,198 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:42,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:08:42,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:42,221 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:42,268 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:42,289 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:42,289 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-01 01:08:42,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-01 01:08:42,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-01 01:08:42,290 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:42,293 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 16 states. [2018-10-01 01:08:42,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:42,550 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-10-01 01:08:42,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-01 01:08:42,554 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-10-01 01:08:42,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:42,555 INFO L225 Difference]: With dead ends: 20 [2018-10-01 01:08:42,555 INFO L226 Difference]: Without dead ends: 18 [2018-10-01 01:08:42,555 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 01:08:42,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-01 01:08:42,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-01 01:08:42,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-01 01:08:42,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-10-01 01:08:42,560 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-10-01 01:08:42,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:42,560 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-10-01 01:08:42,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-01 01:08:42,561 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-10-01 01:08:42,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-01 01:08:42,561 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:42,561 INFO L375 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2018-10-01 01:08:42,562 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:42,562 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:42,562 INFO L82 PathProgramCache]: Analyzing trace with hash 42362528, now seen corresponding path program 14 times [2018-10-01 01:08:42,562 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:42,562 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:42,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:42,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:08:42,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:42,724 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:42,724 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:42,724 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:42,731 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:08:42,749 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:08:42,749 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:42,751 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:42,796 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:42,816 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:42,817 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-01 01:08:42,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-01 01:08:42,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-01 01:08:42,818 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:42,818 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 17 states. [2018-10-01 01:08:42,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:42,993 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-01 01:08:42,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-01 01:08:42,994 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2018-10-01 01:08:42,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:42,995 INFO L225 Difference]: With dead ends: 21 [2018-10-01 01:08:42,995 INFO L226 Difference]: Without dead ends: 19 [2018-10-01 01:08:42,995 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 01:08:42,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-01 01:08:42,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-01 01:08:42,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-01 01:08:42,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-01 01:08:42,999 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-10-01 01:08:42,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:42,999 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-01 01:08:42,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-01 01:08:42,999 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-01 01:08:43,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-01 01:08:43,000 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:43,000 INFO L375 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2018-10-01 01:08:43,000 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:43,000 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:43,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1313234502, now seen corresponding path program 15 times [2018-10-01 01:08:43,001 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:43,001 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:43,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:43,002 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:43,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:43,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:43,222 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:43,222 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:43,223 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:43,231 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:08:43,255 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-01 01:08:43,256 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:43,257 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:43,332 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:43,353 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:43,353 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-01 01:08:43,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-01 01:08:43,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-01 01:08:43,354 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:43,354 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 18 states. [2018-10-01 01:08:43,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:43,503 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-01 01:08:43,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-01 01:08:43,503 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2018-10-01 01:08:43,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:43,504 INFO L225 Difference]: With dead ends: 22 [2018-10-01 01:08:43,504 INFO L226 Difference]: Without dead ends: 20 [2018-10-01 01:08:43,505 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:08:43,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-01 01:08:43,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-01 01:08:43,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-01 01:08:43,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-10-01 01:08:43,508 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-10-01 01:08:43,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:43,508 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-10-01 01:08:43,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-01 01:08:43,509 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-10-01 01:08:43,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-01 01:08:43,509 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:43,509 INFO L375 BasicCegarLoop]: trace histogram [16, 1, 1, 1] [2018-10-01 01:08:43,509 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:43,509 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:43,510 INFO L82 PathProgramCache]: Analyzing trace with hash 2055560032, now seen corresponding path program 16 times [2018-10-01 01:08:43,510 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:43,510 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:43,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:43,510 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:43,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:43,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:43,880 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:43,881 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:43,881 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:43,890 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:08:43,902 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:08:43,902 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:43,904 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:43,945 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:43,965 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:43,965 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-01 01:08:43,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-01 01:08:43,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-01 01:08:43,966 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:43,966 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 19 states. [2018-10-01 01:08:44,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:44,110 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-01 01:08:44,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-01 01:08:44,111 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2018-10-01 01:08:44,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:44,112 INFO L225 Difference]: With dead ends: 23 [2018-10-01 01:08:44,112 INFO L226 Difference]: Without dead ends: 21 [2018-10-01 01:08:44,113 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:08:44,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-01 01:08:44,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-01 01:08:44,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-01 01:08:44,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-01 01:08:44,116 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2018-10-01 01:08:44,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:44,116 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-01 01:08:44,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-01 01:08:44,116 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-01 01:08:44,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-01 01:08:44,117 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:44,117 INFO L375 BasicCegarLoop]: trace histogram [17, 1, 1, 1] [2018-10-01 01:08:44,118 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:44,118 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:44,118 INFO L82 PathProgramCache]: Analyzing trace with hash -702152314, now seen corresponding path program 17 times [2018-10-01 01:08:44,118 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:44,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:44,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:44,119 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:44,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:44,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:44,285 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:44,285 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:44,285 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:44,293 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:08:44,421 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-10-01 01:08:44,422 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:44,424 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:44,548 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:44,568 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:44,569 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-01 01:08:44,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-01 01:08:44,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-01 01:08:44,569 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:44,569 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 20 states. [2018-10-01 01:08:44,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:44,738 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-10-01 01:08:44,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-01 01:08:44,739 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 20 [2018-10-01 01:08:44,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:44,739 INFO L225 Difference]: With dead ends: 24 [2018-10-01 01:08:44,739 INFO L226 Difference]: Without dead ends: 22 [2018-10-01 01:08:44,740 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:08:44,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-01 01:08:44,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-10-01 01:08:44,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-01 01:08:44,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-10-01 01:08:44,743 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2018-10-01 01:08:44,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:44,743 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-10-01 01:08:44,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-01 01:08:44,743 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-10-01 01:08:44,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-01 01:08:44,744 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:44,744 INFO L375 BasicCegarLoop]: trace histogram [18, 1, 1, 1] [2018-10-01 01:08:44,745 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:44,745 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:44,745 INFO L82 PathProgramCache]: Analyzing trace with hash -291889120, now seen corresponding path program 18 times [2018-10-01 01:08:44,745 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:44,745 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:44,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:44,746 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:44,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:44,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:44,881 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:44,881 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:44,881 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:44,890 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:08:44,924 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2018-10-01 01:08:44,925 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:44,927 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:45,049 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:45,078 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:45,079 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-10-01 01:08:45,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-01 01:08:45,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-01 01:08:45,080 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:45,080 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 21 states. [2018-10-01 01:08:45,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:45,210 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-01 01:08:45,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-01 01:08:45,211 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 21 [2018-10-01 01:08:45,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:45,212 INFO L225 Difference]: With dead ends: 25 [2018-10-01 01:08:45,212 INFO L226 Difference]: Without dead ends: 23 [2018-10-01 01:08:45,212 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:08:45,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-01 01:08:45,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-01 01:08:45,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-01 01:08:45,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-01 01:08:45,216 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2018-10-01 01:08:45,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:45,217 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-01 01:08:45,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-01 01:08:45,217 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-01 01:08:45,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-01 01:08:45,217 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:45,218 INFO L375 BasicCegarLoop]: trace histogram [19, 1, 1, 1] [2018-10-01 01:08:45,218 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:45,218 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:45,218 INFO L82 PathProgramCache]: Analyzing trace with hash -458631994, now seen corresponding path program 19 times [2018-10-01 01:08:45,218 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:45,218 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:45,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:45,219 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:45,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:45,514 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:45,515 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:45,515 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:45,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:08:45,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:45,567 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:45,682 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:45,704 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:45,704 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-01 01:08:45,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-01 01:08:45,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-01 01:08:45,705 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:45,705 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 22 states. [2018-10-01 01:08:45,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:45,867 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-10-01 01:08:45,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-01 01:08:45,867 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 22 [2018-10-01 01:08:45,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:45,868 INFO L225 Difference]: With dead ends: 26 [2018-10-01 01:08:45,868 INFO L226 Difference]: Without dead ends: 24 [2018-10-01 01:08:45,868 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:08:45,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-01 01:08:45,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-10-01 01:08:45,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-01 01:08:45,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-10-01 01:08:45,872 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-10-01 01:08:45,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:45,872 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-10-01 01:08:45,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-01 01:08:45,872 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-10-01 01:08:45,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-01 01:08:45,873 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:45,873 INFO L375 BasicCegarLoop]: trace histogram [20, 1, 1, 1] [2018-10-01 01:08:45,873 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:45,873 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:45,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1332693792, now seen corresponding path program 20 times [2018-10-01 01:08:45,874 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:45,874 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:45,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:45,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:08:45,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:45,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:46,127 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:46,127 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:46,127 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:46,136 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:08:46,149 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:08:46,149 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:46,152 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:46,367 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:46,388 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:46,389 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-01 01:08:46,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-01 01:08:46,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-01 01:08:46,390 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:46,390 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 23 states. [2018-10-01 01:08:46,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:46,537 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-01 01:08:46,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-01 01:08:46,539 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 23 [2018-10-01 01:08:46,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:46,540 INFO L225 Difference]: With dead ends: 27 [2018-10-01 01:08:46,540 INFO L226 Difference]: Without dead ends: 25 [2018-10-01 01:08:46,540 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:08:46,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-01 01:08:46,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-01 01:08:46,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-01 01:08:46,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-10-01 01:08:46,544 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2018-10-01 01:08:46,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:46,544 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-10-01 01:08:46,544 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-01 01:08:46,544 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-10-01 01:08:46,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-01 01:08:46,545 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:46,545 INFO L375 BasicCegarLoop]: trace histogram [21, 1, 1, 1] [2018-10-01 01:08:46,545 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:46,545 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:46,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1636161542, now seen corresponding path program 21 times [2018-10-01 01:08:46,546 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:46,546 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:46,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:46,547 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:46,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:46,805 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:46,805 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:46,805 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:46,813 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:08:46,833 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-10-01 01:08:46,833 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:46,835 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:47,059 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:47,096 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:47,096 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-01 01:08:47,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-01 01:08:47,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-01 01:08:47,097 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:47,097 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 24 states. [2018-10-01 01:08:47,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:47,467 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-10-01 01:08:47,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-01 01:08:47,469 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 24 [2018-10-01 01:08:47,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:47,469 INFO L225 Difference]: With dead ends: 28 [2018-10-01 01:08:47,469 INFO L226 Difference]: Without dead ends: 26 [2018-10-01 01:08:47,470 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:08:47,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-01 01:08:47,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-10-01 01:08:47,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-01 01:08:47,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-10-01 01:08:47,473 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2018-10-01 01:08:47,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:47,473 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-10-01 01:08:47,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-01 01:08:47,473 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-10-01 01:08:47,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-01 01:08:47,474 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:47,474 INFO L375 BasicCegarLoop]: trace histogram [22, 1, 1, 1] [2018-10-01 01:08:47,474 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:47,474 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:47,475 INFO L82 PathProgramCache]: Analyzing trace with hash -818603616, now seen corresponding path program 22 times [2018-10-01 01:08:47,475 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:47,475 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:47,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:47,476 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:47,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:47,747 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:47,747 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:47,747 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:47,755 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:08:47,767 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:08:47,768 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:47,769 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:47,883 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:47,915 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:47,915 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-10-01 01:08:47,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-01 01:08:47,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-01 01:08:47,916 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:47,916 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 25 states. [2018-10-01 01:08:48,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:48,128 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-01 01:08:48,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-01 01:08:48,128 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 25 [2018-10-01 01:08:48,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:48,129 INFO L225 Difference]: With dead ends: 29 [2018-10-01 01:08:48,129 INFO L226 Difference]: Without dead ends: 27 [2018-10-01 01:08:48,130 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:08:48,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-01 01:08:48,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-01 01:08:48,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-01 01:08:48,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-01 01:08:48,134 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2018-10-01 01:08:48,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:48,135 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-01 01:08:48,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-01 01:08:48,135 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-01 01:08:48,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-01 01:08:48,136 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:48,136 INFO L375 BasicCegarLoop]: trace histogram [23, 1, 1, 1] [2018-10-01 01:08:48,136 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:48,136 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:48,137 INFO L82 PathProgramCache]: Analyzing trace with hash 393087814, now seen corresponding path program 23 times [2018-10-01 01:08:48,137 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:48,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:48,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:48,138 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:48,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:48,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:48,273 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:48,274 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:48,274 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:48,283 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:08:48,305 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-10-01 01:08:48,306 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:48,308 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:48,370 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:48,391 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:48,392 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-01 01:08:48,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-01 01:08:48,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-01 01:08:48,392 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:48,392 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 26 states. [2018-10-01 01:08:48,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:48,535 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-10-01 01:08:48,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-01 01:08:48,537 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 26 [2018-10-01 01:08:48,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:48,538 INFO L225 Difference]: With dead ends: 30 [2018-10-01 01:08:48,538 INFO L226 Difference]: Without dead ends: 28 [2018-10-01 01:08:48,539 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 01:08:48,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-01 01:08:48,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-10-01 01:08:48,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-01 01:08:48,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-10-01 01:08:48,543 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2018-10-01 01:08:48,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:48,543 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-10-01 01:08:48,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-01 01:08:48,543 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-10-01 01:08:48,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-01 01:08:48,544 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:48,544 INFO L375 BasicCegarLoop]: trace histogram [24, 1, 1, 1] [2018-10-01 01:08:48,544 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:48,545 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:48,545 INFO L82 PathProgramCache]: Analyzing trace with hash -699183520, now seen corresponding path program 24 times [2018-10-01 01:08:48,545 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:48,545 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:48,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:48,546 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:48,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:48,729 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:48,730 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:48,730 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:48,738 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:08:48,761 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-01 01:08:48,761 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:48,763 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:48,889 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:48,909 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:48,909 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-10-01 01:08:48,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-01 01:08:48,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-01 01:08:48,910 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:48,910 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 27 states. [2018-10-01 01:08:49,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:49,057 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-01 01:08:49,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-01 01:08:49,057 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 27 [2018-10-01 01:08:49,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:49,058 INFO L225 Difference]: With dead ends: 31 [2018-10-01 01:08:49,058 INFO L226 Difference]: Without dead ends: 29 [2018-10-01 01:08:49,059 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:08:49,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-01 01:08:49,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-01 01:08:49,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-01 01:08:49,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-10-01 01:08:49,063 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2018-10-01 01:08:49,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:49,064 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-10-01 01:08:49,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-01 01:08:49,064 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-10-01 01:08:49,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-01 01:08:49,065 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:49,065 INFO L375 BasicCegarLoop]: trace histogram [25, 1, 1, 1] [2018-10-01 01:08:49,065 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:49,065 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:49,065 INFO L82 PathProgramCache]: Analyzing trace with hash -199856506, now seen corresponding path program 25 times [2018-10-01 01:08:49,065 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:49,066 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:49,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:49,067 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:49,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:49,327 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:49,327 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:49,328 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:49,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:08:49,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:49,352 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:49,428 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:49,449 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:49,449 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-01 01:08:49,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-01 01:08:49,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-01 01:08:49,450 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:49,450 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 28 states. [2018-10-01 01:08:49,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:49,707 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-10-01 01:08:49,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-01 01:08:49,708 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 28 [2018-10-01 01:08:49,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:49,708 INFO L225 Difference]: With dead ends: 32 [2018-10-01 01:08:49,708 INFO L226 Difference]: Without dead ends: 30 [2018-10-01 01:08:49,708 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:08:49,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-10-01 01:08:49,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-10-01 01:08:49,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-01 01:08:49,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-10-01 01:08:49,711 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2018-10-01 01:08:49,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:49,712 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-10-01 01:08:49,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-01 01:08:49,712 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-10-01 01:08:49,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-01 01:08:49,713 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:49,713 INFO L375 BasicCegarLoop]: trace histogram [26, 1, 1, 1] [2018-10-01 01:08:49,713 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:49,713 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:49,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1900588256, now seen corresponding path program 26 times [2018-10-01 01:08:49,714 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:49,714 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:49,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:49,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:08:49,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:49,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:50,400 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:50,400 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:50,401 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:50,409 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:08:50,437 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:08:50,438 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:50,440 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:50,498 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:50,519 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:50,519 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-01 01:08:50,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-01 01:08:50,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-01 01:08:50,520 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:50,520 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 29 states. [2018-10-01 01:08:50,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:50,716 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-01 01:08:50,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-01 01:08:50,717 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 29 [2018-10-01 01:08:50,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:50,717 INFO L225 Difference]: With dead ends: 33 [2018-10-01 01:08:50,718 INFO L226 Difference]: Without dead ends: 31 [2018-10-01 01:08:50,718 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:08:50,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-01 01:08:50,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-01 01:08:50,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-01 01:08:50,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-01 01:08:50,723 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2018-10-01 01:08:50,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:50,724 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-01 01:08:50,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-01 01:08:50,724 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-01 01:08:50,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-01 01:08:50,724 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:50,725 INFO L375 BasicCegarLoop]: trace histogram [27, 1, 1, 1] [2018-10-01 01:08:50,725 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:50,725 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:50,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1211302342, now seen corresponding path program 27 times [2018-10-01 01:08:50,725 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:50,725 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:50,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:50,726 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:50,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:51,600 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:51,600 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:51,600 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:51,607 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:08:51,631 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2018-10-01 01:08:51,632 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:51,633 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:51,735 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:51,756 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:51,756 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-01 01:08:51,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-01 01:08:51,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-01 01:08:51,757 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:51,757 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 30 states. [2018-10-01 01:08:51,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:51,885 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-10-01 01:08:51,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-01 01:08:51,886 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 30 [2018-10-01 01:08:51,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:51,886 INFO L225 Difference]: With dead ends: 34 [2018-10-01 01:08:51,886 INFO L226 Difference]: Without dead ends: 32 [2018-10-01 01:08:51,887 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:08:51,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-10-01 01:08:51,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-10-01 01:08:51,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-01 01:08:51,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-10-01 01:08:51,890 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2018-10-01 01:08:51,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:51,891 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-10-01 01:08:51,891 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-01 01:08:51,891 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-10-01 01:08:51,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-01 01:08:51,891 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:51,892 INFO L375 BasicCegarLoop]: trace histogram [28, 1, 1, 1] [2018-10-01 01:08:51,892 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:51,892 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:51,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1104336928, now seen corresponding path program 28 times [2018-10-01 01:08:51,892 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:51,892 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:51,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:51,893 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:51,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:51,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:52,067 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:52,068 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:52,068 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:52,081 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:08:52,101 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:08:52,101 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:52,102 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:52,153 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:52,174 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:52,175 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-01 01:08:52,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-01 01:08:52,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-01 01:08:52,175 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:52,176 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 31 states. [2018-10-01 01:08:52,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:52,353 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-01 01:08:52,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-01 01:08:52,353 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 31 [2018-10-01 01:08:52,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:52,354 INFO L225 Difference]: With dead ends: 35 [2018-10-01 01:08:52,354 INFO L226 Difference]: Without dead ends: 33 [2018-10-01 01:08:52,354 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 01:08:52,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-01 01:08:52,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-01 01:08:52,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-01 01:08:52,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-10-01 01:08:52,360 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2018-10-01 01:08:52,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:52,361 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-10-01 01:08:52,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-01 01:08:52,361 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-10-01 01:08:52,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-01 01:08:52,361 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:52,363 INFO L375 BasicCegarLoop]: trace histogram [29, 1, 1, 1] [2018-10-01 01:08:52,364 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:52,364 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:52,364 INFO L82 PathProgramCache]: Analyzing trace with hash 125289734, now seen corresponding path program 29 times [2018-10-01 01:08:52,364 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:52,364 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:52,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:52,365 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:52,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:52,652 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:52,652 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:52,652 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:52,660 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:08:52,684 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2018-10-01 01:08:52,685 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:52,686 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:52,746 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:52,768 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:52,768 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-01 01:08:52,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-01 01:08:52,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-01 01:08:52,769 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:52,769 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 32 states. [2018-10-01 01:08:52,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:52,965 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-10-01 01:08:52,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-01 01:08:52,966 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 32 [2018-10-01 01:08:52,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:52,967 INFO L225 Difference]: With dead ends: 36 [2018-10-01 01:08:52,967 INFO L226 Difference]: Without dead ends: 34 [2018-10-01 01:08:52,967 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:08:52,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-01 01:08:52,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-10-01 01:08:52,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-01 01:08:52,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-10-01 01:08:52,971 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2018-10-01 01:08:52,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:52,972 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-10-01 01:08:52,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-01 01:08:52,972 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-10-01 01:08:52,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-01 01:08:52,972 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:52,972 INFO L375 BasicCegarLoop]: trace histogram [30, 1, 1, 1] [2018-10-01 01:08:52,973 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:52,973 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:52,973 INFO L82 PathProgramCache]: Analyzing trace with hash -410989408, now seen corresponding path program 30 times [2018-10-01 01:08:52,973 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:52,973 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:52,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:52,974 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:52,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:53,186 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:53,186 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:53,186 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:53,205 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:08:53,293 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2018-10-01 01:08:53,293 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:53,295 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:53,420 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:53,442 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:53,442 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-10-01 01:08:53,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-01 01:08:53,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-01 01:08:53,443 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:53,443 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 33 states. [2018-10-01 01:08:53,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:53,626 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-01 01:08:53,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-01 01:08:53,626 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 33 [2018-10-01 01:08:53,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:53,627 INFO L225 Difference]: With dead ends: 37 [2018-10-01 01:08:53,627 INFO L226 Difference]: Without dead ends: 35 [2018-10-01 01:08:53,628 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:08:53,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-01 01:08:53,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-01 01:08:53,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-01 01:08:53,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-01 01:08:53,630 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2018-10-01 01:08:53,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:53,631 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-01 01:08:53,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-01 01:08:53,631 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-01 01:08:53,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-01 01:08:53,631 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:53,631 INFO L375 BasicCegarLoop]: trace histogram [31, 1, 1, 1] [2018-10-01 01:08:53,632 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:53,632 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:53,632 INFO L82 PathProgramCache]: Analyzing trace with hash 144226374, now seen corresponding path program 31 times [2018-10-01 01:08:53,632 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:53,632 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:53,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:53,633 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:53,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:53,811 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:53,811 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:53,811 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:53,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:08:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:53,839 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:53,907 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:53,927 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:53,928 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-01 01:08:53,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-01 01:08:53,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-01 01:08:53,928 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:53,929 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 34 states. [2018-10-01 01:08:54,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:54,339 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-10-01 01:08:54,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-01 01:08:54,340 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 34 [2018-10-01 01:08:54,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:54,340 INFO L225 Difference]: With dead ends: 38 [2018-10-01 01:08:54,340 INFO L226 Difference]: Without dead ends: 36 [2018-10-01 01:08:54,341 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:08:54,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-01 01:08:54,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-01 01:08:54,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-01 01:08:54,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-10-01 01:08:54,344 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2018-10-01 01:08:54,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:54,345 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-10-01 01:08:54,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-01 01:08:54,345 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-10-01 01:08:54,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-01 01:08:54,345 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:54,346 INFO L375 BasicCegarLoop]: trace histogram [32, 1, 1, 1] [2018-10-01 01:08:54,346 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:54,346 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:54,346 INFO L82 PathProgramCache]: Analyzing trace with hash 176046432, now seen corresponding path program 32 times [2018-10-01 01:08:54,346 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:54,346 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:54,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:54,348 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:08:54,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:54,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:54,668 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:54,668 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:54,668 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:54,675 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:08:54,694 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:08:54,695 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:54,697 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:54,802 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:54,822 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:54,823 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-01 01:08:54,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-01 01:08:54,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-01 01:08:54,823 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:54,823 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 35 states. [2018-10-01 01:08:55,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:55,054 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-01 01:08:55,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-01 01:08:55,055 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 35 [2018-10-01 01:08:55,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:55,056 INFO L225 Difference]: With dead ends: 39 [2018-10-01 01:08:55,056 INFO L226 Difference]: Without dead ends: 37 [2018-10-01 01:08:55,056 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:08:55,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-01 01:08:55,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-01 01:08:55,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-01 01:08:55,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-10-01 01:08:55,060 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2018-10-01 01:08:55,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:55,060 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-10-01 01:08:55,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-01 01:08:55,060 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-10-01 01:08:55,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-01 01:08:55,061 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:55,061 INFO L375 BasicCegarLoop]: trace histogram [33, 1, 1, 1] [2018-10-01 01:08:55,061 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:55,061 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:55,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1162468230, now seen corresponding path program 33 times [2018-10-01 01:08:55,062 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:55,062 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:55,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:55,062 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:55,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:55,273 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:55,274 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:55,274 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:55,283 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:08:55,319 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2018-10-01 01:08:55,320 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:55,321 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:55,439 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:55,459 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:55,459 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-01 01:08:55,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-01 01:08:55,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-01 01:08:55,460 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:55,460 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 36 states. [2018-10-01 01:08:55,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:55,665 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-10-01 01:08:55,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-01 01:08:55,666 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 36 [2018-10-01 01:08:55,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:55,666 INFO L225 Difference]: With dead ends: 40 [2018-10-01 01:08:55,666 INFO L226 Difference]: Without dead ends: 38 [2018-10-01 01:08:55,667 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:08:55,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-01 01:08:55,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-10-01 01:08:55,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-10-01 01:08:55,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-10-01 01:08:55,669 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2018-10-01 01:08:55,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:55,670 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-10-01 01:08:55,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-01 01:08:55,670 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-10-01 01:08:55,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-01 01:08:55,670 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:55,670 INFO L375 BasicCegarLoop]: trace histogram [34, 1, 1, 1] [2018-10-01 01:08:55,670 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:55,671 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:55,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1676772896, now seen corresponding path program 34 times [2018-10-01 01:08:55,671 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:55,671 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:55,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:55,671 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:55,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:56,269 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:56,270 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:56,270 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:56,280 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:08:56,302 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:08:56,302 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:56,304 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:56,490 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:56,512 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:56,512 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-01 01:08:56,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-01 01:08:56,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-01 01:08:56,512 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:56,512 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 37 states. [2018-10-01 01:08:56,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:56,667 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-01 01:08:56,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-01 01:08:56,667 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 37 [2018-10-01 01:08:56,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:56,668 INFO L225 Difference]: With dead ends: 41 [2018-10-01 01:08:56,668 INFO L226 Difference]: Without dead ends: 39 [2018-10-01 01:08:56,668 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:08:56,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-01 01:08:56,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-01 01:08:56,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-01 01:08:56,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-01 01:08:56,671 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2018-10-01 01:08:56,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:56,671 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-01 01:08:56,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-01 01:08:56,673 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-01 01:08:56,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-01 01:08:56,673 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:56,674 INFO L375 BasicCegarLoop]: trace histogram [35, 1, 1, 1] [2018-10-01 01:08:56,674 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:56,674 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:56,674 INFO L82 PathProgramCache]: Analyzing trace with hash 440348358, now seen corresponding path program 35 times [2018-10-01 01:08:56,674 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:56,674 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:56,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:56,675 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:56,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:56,867 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:56,867 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:56,867 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:56,875 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:08:56,902 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-10-01 01:08:56,902 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:56,904 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:57,018 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:57,040 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:57,040 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-01 01:08:57,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-01 01:08:57,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-01 01:08:57,041 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:57,041 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 38 states. [2018-10-01 01:08:57,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:57,264 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-10-01 01:08:57,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-01 01:08:57,265 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 38 [2018-10-01 01:08:57,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:57,265 INFO L225 Difference]: With dead ends: 42 [2018-10-01 01:08:57,266 INFO L226 Difference]: Without dead ends: 40 [2018-10-01 01:08:57,266 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:08:57,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-10-01 01:08:57,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-10-01 01:08:57,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-01 01:08:57,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-10-01 01:08:57,269 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2018-10-01 01:08:57,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:57,269 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-10-01 01:08:57,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-01 01:08:57,269 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-10-01 01:08:57,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-01 01:08:57,270 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:57,270 INFO L375 BasicCegarLoop]: trace histogram [36, 1, 1, 1] [2018-10-01 01:08:57,270 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:57,270 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:57,270 INFO L82 PathProgramCache]: Analyzing trace with hash 765893344, now seen corresponding path program 36 times [2018-10-01 01:08:57,270 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:57,270 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:57,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:57,271 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:57,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:57,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:57,514 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:57,514 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:57,514 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:57,522 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:08:57,549 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-01 01:08:57,549 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:57,551 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:58,173 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:58,194 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:58,194 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-10-01 01:08:58,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-01 01:08:58,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-01 01:08:58,194 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:58,195 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 39 states. [2018-10-01 01:08:58,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:58,412 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-01 01:08:58,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-01 01:08:58,413 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 39 [2018-10-01 01:08:58,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:58,413 INFO L225 Difference]: With dead ends: 43 [2018-10-01 01:08:58,414 INFO L226 Difference]: Without dead ends: 41 [2018-10-01 01:08:58,414 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:08:58,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-01 01:08:58,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-01 01:08:58,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-01 01:08:58,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-10-01 01:08:58,417 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2018-10-01 01:08:58,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:58,417 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-10-01 01:08:58,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-01 01:08:58,418 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-10-01 01:08:58,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-01 01:08:58,418 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:58,418 INFO L375 BasicCegarLoop]: trace histogram [37, 1, 1, 1] [2018-10-01 01:08:58,418 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:58,418 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:58,419 INFO L82 PathProgramCache]: Analyzing trace with hash -2027113978, now seen corresponding path program 37 times [2018-10-01 01:08:58,419 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:58,419 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:58,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:58,420 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:58,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:58,615 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:58,615 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:58,615 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:58,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:08:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:58,646 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:58,730 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:58,750 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:58,751 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-01 01:08:58,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-01 01:08:58,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-01 01:08:58,751 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:58,751 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 40 states. [2018-10-01 01:08:58,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:58,990 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-10-01 01:08:58,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-01 01:08:58,990 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 40 [2018-10-01 01:08:58,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:58,991 INFO L225 Difference]: With dead ends: 44 [2018-10-01 01:08:58,991 INFO L226 Difference]: Without dead ends: 42 [2018-10-01 01:08:58,991 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:08:58,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-10-01 01:08:58,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-10-01 01:08:58,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-10-01 01:08:58,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-10-01 01:08:58,993 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2018-10-01 01:08:58,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:58,993 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-10-01 01:08:58,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-01 01:08:58,993 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-10-01 01:08:58,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-01 01:08:58,993 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:58,993 INFO L375 BasicCegarLoop]: trace histogram [38, 1, 1, 1] [2018-10-01 01:08:58,994 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:58,994 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:58,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1583972256, now seen corresponding path program 38 times [2018-10-01 01:08:58,994 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:58,994 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:58,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:58,995 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:08:58,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:59,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:59,211 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:59,211 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:59,211 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:59,219 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:08:59,242 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:08:59,242 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:59,245 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:59,348 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:59,368 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:59,368 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-01 01:08:59,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-01 01:08:59,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-01 01:08:59,369 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:59,369 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 41 states. [2018-10-01 01:08:59,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:59,531 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-01 01:08:59,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-01 01:08:59,532 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 41 [2018-10-01 01:08:59,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:59,532 INFO L225 Difference]: With dead ends: 45 [2018-10-01 01:08:59,532 INFO L226 Difference]: Without dead ends: 43 [2018-10-01 01:08:59,533 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:08:59,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-01 01:08:59,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-01 01:08:59,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-01 01:08:59,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-01 01:08:59,542 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2018-10-01 01:08:59,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:59,542 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-01 01:08:59,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-01 01:08:59,542 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-01 01:08:59,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-01 01:08:59,542 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:59,543 INFO L375 BasicCegarLoop]: trace histogram [39, 1, 1, 1] [2018-10-01 01:08:59,543 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:59,543 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:59,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1858495814, now seen corresponding path program 39 times [2018-10-01 01:08:59,543 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:59,543 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:59,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:59,544 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:59,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:59,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:59,968 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:59,969 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:59,969 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:59,977 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:09:00,012 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2018-10-01 01:09:00,013 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:00,014 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:00,145 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:00,164 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:00,164 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-01 01:09:00,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-01 01:09:00,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-01 01:09:00,165 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:00,165 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 42 states. [2018-10-01 01:09:00,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:00,489 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-10-01 01:09:00,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-01 01:09:00,489 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 42 [2018-10-01 01:09:00,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:00,490 INFO L225 Difference]: With dead ends: 46 [2018-10-01 01:09:00,490 INFO L226 Difference]: Without dead ends: 44 [2018-10-01 01:09:00,491 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:09:00,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-01 01:09:00,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-10-01 01:09:00,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-01 01:09:00,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-10-01 01:09:00,493 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2018-10-01 01:09:00,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:00,493 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-10-01 01:09:00,494 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-01 01:09:00,494 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-10-01 01:09:00,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-01 01:09:00,494 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:00,494 INFO L375 BasicCegarLoop]: trace histogram [40, 1, 1, 1] [2018-10-01 01:09:00,494 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:00,494 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:00,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1778791520, now seen corresponding path program 40 times [2018-10-01 01:09:00,495 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:00,495 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:00,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:00,495 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:00,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:00,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:00,845 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:00,846 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:00,846 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:00,854 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:09:00,882 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:09:00,882 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:00,885 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:01,002 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:01,022 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:01,023 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-01 01:09:01,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-01 01:09:01,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-01 01:09:01,023 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:01,024 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 43 states. [2018-10-01 01:09:01,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:01,232 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-01 01:09:01,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-01 01:09:01,233 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 43 [2018-10-01 01:09:01,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:01,234 INFO L225 Difference]: With dead ends: 47 [2018-10-01 01:09:01,234 INFO L226 Difference]: Without dead ends: 45 [2018-10-01 01:09:01,234 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:09:01,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-01 01:09:01,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-01 01:09:01,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-01 01:09:01,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-10-01 01:09:01,237 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2018-10-01 01:09:01,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:01,237 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-10-01 01:09:01,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-01 01:09:01,237 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-10-01 01:09:01,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-01 01:09:01,237 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:01,238 INFO L375 BasicCegarLoop]: trace histogram [41, 1, 1, 1] [2018-10-01 01:09:01,238 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:01,238 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:01,238 INFO L82 PathProgramCache]: Analyzing trace with hash -692041594, now seen corresponding path program 41 times [2018-10-01 01:09:01,238 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:01,238 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:01,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:01,239 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:01,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:01,761 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:01,761 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:01,761 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:01,769 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:09:01,803 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2018-10-01 01:09:01,803 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:01,806 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:01,886 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:01,911 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:01,912 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-01 01:09:01,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-01 01:09:01,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-01 01:09:01,912 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:01,912 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 44 states. [2018-10-01 01:09:02,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:02,227 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-10-01 01:09:02,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-01 01:09:02,227 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 44 [2018-10-01 01:09:02,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:02,228 INFO L225 Difference]: With dead ends: 48 [2018-10-01 01:09:02,228 INFO L226 Difference]: Without dead ends: 46 [2018-10-01 01:09:02,228 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:09:02,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-01 01:09:02,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-10-01 01:09:02,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-10-01 01:09:02,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-10-01 01:09:02,230 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2018-10-01 01:09:02,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:02,230 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-10-01 01:09:02,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-01 01:09:02,230 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-10-01 01:09:02,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-01 01:09:02,230 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:02,231 INFO L375 BasicCegarLoop]: trace histogram [42, 1, 1, 1] [2018-10-01 01:09:02,231 INFO L423 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:02,231 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:02,231 INFO L82 PathProgramCache]: Analyzing trace with hash 21543200, now seen corresponding path program 42 times [2018-10-01 01:09:02,231 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:02,231 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:02,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:02,232 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:02,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:02,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:02,563 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:02,563 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:02,563 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:02,572 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:09:02,603 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2018-10-01 01:09:02,603 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:02,605 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:02,713 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:02,734 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:02,734 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-10-01 01:09:02,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-01 01:09:02,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-01 01:09:02,735 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:02,735 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 45 states. [2018-10-01 01:09:02,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:02,980 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-01 01:09:02,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-01 01:09:02,981 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 45 [2018-10-01 01:09:02,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:02,981 INFO L225 Difference]: With dead ends: 49 [2018-10-01 01:09:02,981 INFO L226 Difference]: Without dead ends: 47 [2018-10-01 01:09:02,982 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:09:02,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-01 01:09:02,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-01 01:09:02,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-01 01:09:02,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-01 01:09:02,984 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2018-10-01 01:09:02,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:02,985 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-01 01:09:02,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-01 01:09:02,985 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-01 01:09:02,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-01 01:09:02,986 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:02,986 INFO L375 BasicCegarLoop]: trace histogram [43, 1, 1, 1] [2018-10-01 01:09:02,986 INFO L423 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:02,986 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:02,986 INFO L82 PathProgramCache]: Analyzing trace with hash 667835334, now seen corresponding path program 43 times [2018-10-01 01:09:02,987 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:02,987 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:02,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:02,987 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:02,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:03,342 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:03,342 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:03,342 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:03,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:03,379 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:03,464 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:03,484 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:03,485 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-01 01:09:03,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-01 01:09:03,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-01 01:09:03,485 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:03,485 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 46 states. [2018-10-01 01:09:03,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:03,814 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-10-01 01:09:03,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-01 01:09:03,814 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 46 [2018-10-01 01:09:03,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:03,815 INFO L225 Difference]: With dead ends: 50 [2018-10-01 01:09:03,815 INFO L226 Difference]: Without dead ends: 48 [2018-10-01 01:09:03,815 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:09:03,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-01 01:09:03,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-10-01 01:09:03,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-01 01:09:03,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-10-01 01:09:03,818 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2018-10-01 01:09:03,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:03,818 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-10-01 01:09:03,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-01 01:09:03,818 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-10-01 01:09:03,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-01 01:09:03,819 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:03,819 INFO L375 BasicCegarLoop]: trace histogram [44, 1, 1, 1] [2018-10-01 01:09:03,819 INFO L423 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:03,819 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:03,819 INFO L82 PathProgramCache]: Analyzing trace with hash -771944992, now seen corresponding path program 44 times [2018-10-01 01:09:03,820 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:03,820 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:03,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:03,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:03,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:04,041 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:04,041 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:04,041 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:04,050 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:09:04,087 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:09:04,087 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:04,089 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:04,168 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:04,187 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:04,187 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-01 01:09:04,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-01 01:09:04,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-01 01:09:04,188 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:04,188 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 47 states. [2018-10-01 01:09:04,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:04,442 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-01 01:09:04,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-01 01:09:04,443 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 47 [2018-10-01 01:09:04,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:04,443 INFO L225 Difference]: With dead ends: 51 [2018-10-01 01:09:04,443 INFO L226 Difference]: Without dead ends: 49 [2018-10-01 01:09:04,444 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:09:04,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-01 01:09:04,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-01 01:09:04,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-01 01:09:04,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-10-01 01:09:04,447 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2018-10-01 01:09:04,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:04,447 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-10-01 01:09:04,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-01 01:09:04,447 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-10-01 01:09:04,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-01 01:09:04,448 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:04,448 INFO L375 BasicCegarLoop]: trace histogram [45, 1, 1, 1] [2018-10-01 01:09:04,448 INFO L423 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:04,448 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:04,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1839505158, now seen corresponding path program 45 times [2018-10-01 01:09:04,449 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:04,449 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:04,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:04,450 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:04,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:04,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:04,719 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:04,719 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:04,727 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:09:04,762 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2018-10-01 01:09:04,763 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:04,765 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:04,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:04,898 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:04,898 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-01 01:09:04,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-01 01:09:04,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-01 01:09:04,899 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:04,899 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 48 states. [2018-10-01 01:09:05,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:05,288 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-10-01 01:09:05,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-01 01:09:05,289 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 48 [2018-10-01 01:09:05,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:05,289 INFO L225 Difference]: With dead ends: 52 [2018-10-01 01:09:05,289 INFO L226 Difference]: Without dead ends: 50 [2018-10-01 01:09:05,289 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:09:05,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-01 01:09:05,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-10-01 01:09:05,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-01 01:09:05,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-10-01 01:09:05,291 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2018-10-01 01:09:05,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:05,291 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-10-01 01:09:05,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-01 01:09:05,292 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-10-01 01:09:05,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-01 01:09:05,292 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:05,292 INFO L375 BasicCegarLoop]: trace histogram [46, 1, 1, 1] [2018-10-01 01:09:05,292 INFO L423 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:05,292 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:05,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1190081184, now seen corresponding path program 46 times [2018-10-01 01:09:05,293 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:05,293 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:05,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:05,293 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:05,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:05,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:05,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:05,817 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:05,817 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:05,826 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:09:05,852 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:09:05,852 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:05,854 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:05,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:05,974 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:05,975 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-10-01 01:09:05,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-01 01:09:05,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-01 01:09:05,975 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:05,975 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 49 states. [2018-10-01 01:09:06,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:06,253 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-01 01:09:06,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-01 01:09:06,253 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 49 [2018-10-01 01:09:06,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:06,254 INFO L225 Difference]: With dead ends: 53 [2018-10-01 01:09:06,254 INFO L226 Difference]: Without dead ends: 51 [2018-10-01 01:09:06,254 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:09:06,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-01 01:09:06,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-01 01:09:06,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-01 01:09:06,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-01 01:09:06,257 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2018-10-01 01:09:06,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:06,257 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-01 01:09:06,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-01 01:09:06,257 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-01 01:09:06,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-01 01:09:06,258 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:06,258 INFO L375 BasicCegarLoop]: trace histogram [47, 1, 1, 1] [2018-10-01 01:09:06,258 INFO L423 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:06,258 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:06,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1762192826, now seen corresponding path program 47 times [2018-10-01 01:09:06,259 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:06,259 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:06,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:06,259 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:06,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:06,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:06,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:06,856 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:06,856 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:06,863 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:09:06,906 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-10-01 01:09:06,906 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:06,910 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:07,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:07,056 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:07,056 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-01 01:09:07,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-01 01:09:07,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-01 01:09:07,057 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:07,057 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 50 states. [2018-10-01 01:09:07,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:07,299 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-10-01 01:09:07,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-01 01:09:07,301 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 50 [2018-10-01 01:09:07,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:07,301 INFO L225 Difference]: With dead ends: 54 [2018-10-01 01:09:07,301 INFO L226 Difference]: Without dead ends: 52 [2018-10-01 01:09:07,302 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:09:07,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-10-01 01:09:07,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-10-01 01:09:07,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-10-01 01:09:07,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-10-01 01:09:07,306 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2018-10-01 01:09:07,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:07,306 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-10-01 01:09:07,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-01 01:09:07,307 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-10-01 01:09:07,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-01 01:09:07,307 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:07,307 INFO L375 BasicCegarLoop]: trace histogram [48, 1, 1, 1] [2018-10-01 01:09:07,307 INFO L423 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:07,308 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:07,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1206593376, now seen corresponding path program 48 times [2018-10-01 01:09:07,308 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:07,308 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:07,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:07,309 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:07,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:07,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:07,563 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:07,563 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:07,571 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:09:07,614 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-01 01:09:07,614 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:07,616 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:07,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:07,728 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:07,728 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-10-01 01:09:07,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-01 01:09:07,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-01 01:09:07,729 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:07,729 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 51 states. [2018-10-01 01:09:07,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:07,917 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-01 01:09:07,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-01 01:09:07,918 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 51 [2018-10-01 01:09:07,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:07,918 INFO L225 Difference]: With dead ends: 55 [2018-10-01 01:09:07,918 INFO L226 Difference]: Without dead ends: 53 [2018-10-01 01:09:07,919 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:09:07,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-01 01:09:07,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-01 01:09:07,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-01 01:09:07,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-10-01 01:09:07,921 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2018-10-01 01:09:07,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:07,922 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-10-01 01:09:07,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-01 01:09:07,922 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-10-01 01:09:07,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-01 01:09:07,922 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:07,922 INFO L375 BasicCegarLoop]: trace histogram [49, 1, 1, 1] [2018-10-01 01:09:07,923 INFO L423 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:07,923 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:07,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1250314874, now seen corresponding path program 49 times [2018-10-01 01:09:07,923 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:07,923 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:07,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:07,924 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:07,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:09,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:09,201 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:09,201 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:09,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:09,240 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:09,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:09,349 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:09,349 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-01 01:09:09,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-01 01:09:09,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-01 01:09:09,350 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:09,350 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 52 states. [2018-10-01 01:09:09,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:09,537 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-10-01 01:09:09,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-01 01:09:09,537 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 52 [2018-10-01 01:09:09,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:09,538 INFO L225 Difference]: With dead ends: 56 [2018-10-01 01:09:09,538 INFO L226 Difference]: Without dead ends: 54 [2018-10-01 01:09:09,538 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:09:09,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-10-01 01:09:09,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-10-01 01:09:09,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-10-01 01:09:09,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-10-01 01:09:09,541 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2018-10-01 01:09:09,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:09,541 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-10-01 01:09:09,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-01 01:09:09,541 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-10-01 01:09:09,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-01 01:09:09,542 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:09,542 INFO L375 BasicCegarLoop]: trace histogram [50, 1, 1, 1] [2018-10-01 01:09:09,542 INFO L423 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:09,542 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:09,542 INFO L82 PathProgramCache]: Analyzing trace with hash -105059296, now seen corresponding path program 50 times [2018-10-01 01:09:09,542 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:09,542 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:09,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:09,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:09,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:09,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:09,929 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:09,929 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:09,937 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:09:09,978 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:09:09,979 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:09,981 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:10,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:10,173 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:10,174 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-01 01:09:10,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-01 01:09:10,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-01 01:09:10,174 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:10,174 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 53 states. [2018-10-01 01:09:10,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:10,461 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-01 01:09:10,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-01 01:09:10,461 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 53 [2018-10-01 01:09:10,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:10,462 INFO L225 Difference]: With dead ends: 57 [2018-10-01 01:09:10,463 INFO L226 Difference]: Without dead ends: 55 [2018-10-01 01:09:10,463 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:09:10,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-01 01:09:10,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-01 01:09:10,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-01 01:09:10,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-01 01:09:10,465 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2018-10-01 01:09:10,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:10,465 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-01 01:09:10,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-01 01:09:10,466 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-01 01:09:10,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-01 01:09:10,466 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:10,466 INFO L375 BasicCegarLoop]: trace histogram [51, 1, 1, 1] [2018-10-01 01:09:10,466 INFO L423 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:10,467 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:10,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1038125254, now seen corresponding path program 51 times [2018-10-01 01:09:10,467 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:10,467 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:10,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:10,468 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:10,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:10,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:10,745 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:10,745 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:10,753 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:09:10,954 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2018-10-01 01:09:10,954 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:10,956 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:11,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:11,097 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:11,097 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-01 01:09:11,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-01 01:09:11,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-01 01:09:11,098 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:11,098 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 54 states. [2018-10-01 01:09:11,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:11,348 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-10-01 01:09:11,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-01 01:09:11,349 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 54 [2018-10-01 01:09:11,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:11,349 INFO L225 Difference]: With dead ends: 58 [2018-10-01 01:09:11,350 INFO L226 Difference]: Without dead ends: 56 [2018-10-01 01:09:11,350 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:09:11,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-01 01:09:11,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-10-01 01:09:11,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-10-01 01:09:11,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-10-01 01:09:11,352 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2018-10-01 01:09:11,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:11,353 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-10-01 01:09:11,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-01 01:09:11,353 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-10-01 01:09:11,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-01 01:09:11,353 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:11,354 INFO L375 BasicCegarLoop]: trace histogram [52, 1, 1, 1] [2018-10-01 01:09:11,354 INFO L423 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:11,354 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:11,354 INFO L82 PathProgramCache]: Analyzing trace with hash 2117107936, now seen corresponding path program 52 times [2018-10-01 01:09:11,354 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:11,354 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:11,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:11,355 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:11,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:11,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:11,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:11,745 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:11,746 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:11,754 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:09:11,788 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:09:11,788 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:11,791 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:11,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:11,919 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:11,919 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-01 01:09:11,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-01 01:09:11,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-01 01:09:11,920 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:11,920 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 55 states. [2018-10-01 01:09:12,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:12,224 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-10-01 01:09:12,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-01 01:09:12,224 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 55 [2018-10-01 01:09:12,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:12,225 INFO L225 Difference]: With dead ends: 59 [2018-10-01 01:09:12,225 INFO L226 Difference]: Without dead ends: 57 [2018-10-01 01:09:12,225 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:09:12,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-01 01:09:12,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-01 01:09:12,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-01 01:09:12,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-10-01 01:09:12,228 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2018-10-01 01:09:12,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:12,228 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-10-01 01:09:12,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-01 01:09:12,228 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-10-01 01:09:12,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-01 01:09:12,228 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:12,229 INFO L375 BasicCegarLoop]: trace histogram [53, 1, 1, 1] [2018-10-01 01:09:12,229 INFO L423 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:12,229 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:12,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1205832710, now seen corresponding path program 53 times [2018-10-01 01:09:12,229 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:12,229 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:12,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:12,230 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:12,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:12,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:12,648 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:12,648 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:12,656 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:09:12,703 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2018-10-01 01:09:12,704 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:12,706 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:12,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:12,860 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:12,860 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-01 01:09:12,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-01 01:09:12,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-01 01:09:12,861 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:12,861 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 56 states. [2018-10-01 01:09:13,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:13,193 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2018-10-01 01:09:13,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-01 01:09:13,193 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 56 [2018-10-01 01:09:13,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:13,194 INFO L225 Difference]: With dead ends: 60 [2018-10-01 01:09:13,194 INFO L226 Difference]: Without dead ends: 58 [2018-10-01 01:09:13,195 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:09:13,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-10-01 01:09:13,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-10-01 01:09:13,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-10-01 01:09:13,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-10-01 01:09:13,197 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2018-10-01 01:09:13,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:13,197 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-10-01 01:09:13,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-01 01:09:13,197 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-10-01 01:09:13,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-01 01:09:13,198 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:13,198 INFO L375 BasicCegarLoop]: trace histogram [54, 1, 1, 1] [2018-10-01 01:09:13,198 INFO L423 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:13,198 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:13,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1273895520, now seen corresponding path program 54 times [2018-10-01 01:09:13,198 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:13,198 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:13,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:13,199 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:13,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:13,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:13,552 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:13,552 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:13,560 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:09:13,603 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2018-10-01 01:09:13,603 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:13,605 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:13,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:13,820 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:13,820 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-10-01 01:09:13,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-01 01:09:13,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-01 01:09:13,821 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:13,821 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 57 states. [2018-10-01 01:09:14,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:14,042 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-01 01:09:14,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-01 01:09:14,042 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 57 [2018-10-01 01:09:14,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:14,043 INFO L225 Difference]: With dead ends: 61 [2018-10-01 01:09:14,043 INFO L226 Difference]: Without dead ends: 59 [2018-10-01 01:09:14,044 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:09:14,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-01 01:09:14,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-01 01:09:14,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-01 01:09:14,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-01 01:09:14,046 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2018-10-01 01:09:14,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:14,046 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-01 01:09:14,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-01 01:09:14,046 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-01 01:09:14,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-01 01:09:14,047 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:14,047 INFO L375 BasicCegarLoop]: trace histogram [55, 1, 1, 1] [2018-10-01 01:09:14,047 INFO L423 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:14,047 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:14,047 INFO L82 PathProgramCache]: Analyzing trace with hash -836059322, now seen corresponding path program 55 times [2018-10-01 01:09:14,048 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:14,048 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:14,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:14,048 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:14,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:14,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:14,345 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:14,345 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:14,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:14,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:14,389 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:14,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:14,501 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:14,501 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-01 01:09:14,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-01 01:09:14,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-01 01:09:14,502 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:14,502 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 58 states. [2018-10-01 01:09:14,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:14,836 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-10-01 01:09:14,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-01 01:09:14,836 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 58 [2018-10-01 01:09:14,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:14,837 INFO L225 Difference]: With dead ends: 62 [2018-10-01 01:09:14,837 INFO L226 Difference]: Without dead ends: 60 [2018-10-01 01:09:14,837 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:09:14,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-10-01 01:09:14,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-10-01 01:09:14,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-01 01:09:14,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-10-01 01:09:14,840 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2018-10-01 01:09:14,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:14,840 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-10-01 01:09:14,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-01 01:09:14,840 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-10-01 01:09:14,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-01 01:09:14,841 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:14,841 INFO L375 BasicCegarLoop]: trace histogram [56, 1, 1, 1] [2018-10-01 01:09:14,841 INFO L423 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:14,841 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:14,841 INFO L82 PathProgramCache]: Analyzing trace with hash -148039072, now seen corresponding path program 56 times [2018-10-01 01:09:14,841 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:14,841 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:14,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:14,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:14,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:14,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:15,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:15,547 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:15,547 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:15,554 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:09:15,584 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:09:15,584 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:15,586 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:15,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:15,889 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:15,890 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-01 01:09:15,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-01 01:09:15,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-01 01:09:15,891 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:15,891 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 59 states. [2018-10-01 01:09:16,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:16,105 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-01 01:09:16,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-01 01:09:16,105 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 59 [2018-10-01 01:09:16,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:16,106 INFO L225 Difference]: With dead ends: 63 [2018-10-01 01:09:16,106 INFO L226 Difference]: Without dead ends: 61 [2018-10-01 01:09:16,106 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:09:16,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-01 01:09:16,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-01 01:09:16,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-01 01:09:16,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-10-01 01:09:16,108 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2018-10-01 01:09:16,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:16,109 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-10-01 01:09:16,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-01 01:09:16,109 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-10-01 01:09:16,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-01 01:09:16,109 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:16,110 INFO L375 BasicCegarLoop]: trace histogram [57, 1, 1, 1] [2018-10-01 01:09:16,110 INFO L423 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:16,110 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:16,110 INFO L82 PathProgramCache]: Analyzing trace with hash -294247802, now seen corresponding path program 57 times [2018-10-01 01:09:16,110 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:16,110 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:16,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:16,111 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:16,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:16,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:16,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:16,518 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:16,518 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:16,525 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:09:16,569 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2018-10-01 01:09:16,569 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:16,571 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:16,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:16,736 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:16,736 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-01 01:09:16,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-01 01:09:16,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-01 01:09:16,737 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:16,737 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 60 states. [2018-10-01 01:09:17,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:17,072 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-10-01 01:09:17,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-01 01:09:17,073 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 60 [2018-10-01 01:09:17,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:17,074 INFO L225 Difference]: With dead ends: 64 [2018-10-01 01:09:17,074 INFO L226 Difference]: Without dead ends: 62 [2018-10-01 01:09:17,074 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:09:17,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-10-01 01:09:17,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-10-01 01:09:17,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-10-01 01:09:17,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-10-01 01:09:17,076 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2018-10-01 01:09:17,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:17,076 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-10-01 01:09:17,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-01 01:09:17,077 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-10-01 01:09:17,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-01 01:09:17,077 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:17,078 INFO L375 BasicCegarLoop]: trace histogram [58, 1, 1, 1] [2018-10-01 01:09:17,078 INFO L423 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:17,078 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:17,078 INFO L82 PathProgramCache]: Analyzing trace with hash -531751136, now seen corresponding path program 58 times [2018-10-01 01:09:17,078 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:17,078 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:17,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:17,079 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:17,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:17,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:17,764 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:17,764 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:17,774 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:09:17,811 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:09:17,812 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:17,814 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:17,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:17,952 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:17,952 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-01 01:09:17,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-01 01:09:17,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-01 01:09:17,953 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:17,953 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 61 states. [2018-10-01 01:09:18,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:18,265 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-01 01:09:18,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-01 01:09:18,266 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 61 [2018-10-01 01:09:18,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:18,266 INFO L225 Difference]: With dead ends: 65 [2018-10-01 01:09:18,267 INFO L226 Difference]: Without dead ends: 63 [2018-10-01 01:09:18,267 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:09:18,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-01 01:09:18,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-01 01:09:18,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-01 01:09:18,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-01 01:09:18,269 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2018-10-01 01:09:18,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:18,269 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-01 01:09:18,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-01 01:09:18,269 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-01 01:09:18,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-01 01:09:18,270 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:18,270 INFO L375 BasicCegarLoop]: trace histogram [59, 1, 1, 1] [2018-10-01 01:09:18,270 INFO L423 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:18,270 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:18,270 INFO L82 PathProgramCache]: Analyzing trace with hash 695580102, now seen corresponding path program 59 times [2018-10-01 01:09:18,270 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:18,270 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:18,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:18,271 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:18,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:20,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:20,690 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:20,690 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:20,698 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:09:20,746 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-10-01 01:09:20,746 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:20,749 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:20,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:20,946 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:20,947 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-01 01:09:20,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-01 01:09:20,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-01 01:09:20,948 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:20,948 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 62 states. [2018-10-01 01:09:21,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:21,238 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-10-01 01:09:21,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-01 01:09:21,238 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 62 [2018-10-01 01:09:21,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:21,239 INFO L225 Difference]: With dead ends: 66 [2018-10-01 01:09:21,239 INFO L226 Difference]: Without dead ends: 64 [2018-10-01 01:09:21,240 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 01:09:21,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-10-01 01:09:21,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-10-01 01:09:21,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-10-01 01:09:21,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-10-01 01:09:21,242 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2018-10-01 01:09:21,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:21,242 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-10-01 01:09:21,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-01 01:09:21,242 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-10-01 01:09:21,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-01 01:09:21,242 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:21,243 INFO L375 BasicCegarLoop]: trace histogram [60, 1, 1, 1] [2018-10-01 01:09:21,243 INFO L423 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:21,243 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:21,243 INFO L82 PathProgramCache]: Analyzing trace with hash 88142816, now seen corresponding path program 60 times [2018-10-01 01:09:21,243 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:21,243 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:21,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:21,244 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:21,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:21,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:22,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:22,301 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:22,301 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:22,309 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:09:22,358 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-01 01:09:22,358 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:22,361 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:22,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:22,511 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:22,511 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-10-01 01:09:22,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-01 01:09:22,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-01 01:09:22,512 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:22,512 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 63 states. [2018-10-01 01:09:22,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:22,864 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-10-01 01:09:22,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-01 01:09:22,865 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 63 [2018-10-01 01:09:22,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:22,865 INFO L225 Difference]: With dead ends: 67 [2018-10-01 01:09:22,865 INFO L226 Difference]: Without dead ends: 65 [2018-10-01 01:09:22,866 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:09:22,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-01 01:09:22,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-01 01:09:22,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-01 01:09:22,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-10-01 01:09:22,867 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2018-10-01 01:09:22,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:22,868 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-10-01 01:09:22,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-01 01:09:22,868 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-10-01 01:09:22,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-01 01:09:22,868 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:22,868 INFO L375 BasicCegarLoop]: trace histogram [61, 1, 1, 1] [2018-10-01 01:09:22,868 INFO L423 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:22,868 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:22,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1562543866, now seen corresponding path program 61 times [2018-10-01 01:09:22,869 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:22,869 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:22,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:22,869 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:22,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:23,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:23,171 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:23,171 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:23,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:23,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:23,216 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:23,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:23,352 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:23,352 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-01 01:09:23,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-01 01:09:23,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-01 01:09:23,353 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:23,353 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 64 states. [2018-10-01 01:09:23,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:23,731 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-10-01 01:09:23,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-01 01:09:23,731 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 64 [2018-10-01 01:09:23,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:23,732 INFO L225 Difference]: With dead ends: 68 [2018-10-01 01:09:23,732 INFO L226 Difference]: Without dead ends: 66 [2018-10-01 01:09:23,733 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:09:23,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-10-01 01:09:23,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-10-01 01:09:23,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-10-01 01:09:23,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-10-01 01:09:23,735 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2018-10-01 01:09:23,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:23,735 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-10-01 01:09:23,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-01 01:09:23,736 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-10-01 01:09:23,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-01 01:09:23,736 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:23,736 INFO L375 BasicCegarLoop]: trace histogram [62, 1, 1, 1] [2018-10-01 01:09:23,736 INFO L423 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:23,736 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:23,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1194223456, now seen corresponding path program 62 times [2018-10-01 01:09:23,736 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:23,737 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:23,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:23,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:23,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:24,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:24,123 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:24,123 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:24,132 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:09:24,167 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:09:24,167 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:24,169 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:24,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:24,302 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:24,303 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-01 01:09:24,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-01 01:09:24,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-01 01:09:24,304 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:24,304 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 65 states. [2018-10-01 01:09:24,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:24,717 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-01 01:09:24,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-01 01:09:24,717 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 65 [2018-10-01 01:09:24,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:24,718 INFO L225 Difference]: With dead ends: 69 [2018-10-01 01:09:24,718 INFO L226 Difference]: Without dead ends: 67 [2018-10-01 01:09:24,718 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:09:24,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-01 01:09:24,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-01 01:09:24,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-01 01:09:24,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-01 01:09:24,720 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2018-10-01 01:09:24,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:24,720 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-01 01:09:24,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-01 01:09:24,721 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-01 01:09:24,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-01 01:09:24,721 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:24,721 INFO L375 BasicCegarLoop]: trace histogram [63, 1, 1, 1] [2018-10-01 01:09:24,721 INFO L423 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:24,721 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:24,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1633774662, now seen corresponding path program 63 times [2018-10-01 01:09:24,722 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:24,722 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:24,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:24,722 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:24,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:24,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:25,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:25,055 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:25,055 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:25,070 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:09:25,188 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2018-10-01 01:09:25,189 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:25,192 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:25,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:25,336 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:25,336 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-01 01:09:25,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-01 01:09:25,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-01 01:09:25,337 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:25,337 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 66 states. [2018-10-01 01:09:25,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:25,913 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-10-01 01:09:25,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-01 01:09:25,913 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 66 [2018-10-01 01:09:25,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:25,914 INFO L225 Difference]: With dead ends: 70 [2018-10-01 01:09:25,914 INFO L226 Difference]: Without dead ends: 68 [2018-10-01 01:09:25,914 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:09:25,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-01 01:09:25,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-10-01 01:09:25,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-10-01 01:09:25,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-10-01 01:09:25,918 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2018-10-01 01:09:25,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:25,918 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-10-01 01:09:25,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-01 01:09:25,919 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-10-01 01:09:25,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-01 01:09:25,919 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:25,919 INFO L375 BasicCegarLoop]: trace histogram [64, 1, 1, 1] [2018-10-01 01:09:25,919 INFO L423 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:25,920 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:25,920 INFO L82 PathProgramCache]: Analyzing trace with hash -892596896, now seen corresponding path program 64 times [2018-10-01 01:09:25,920 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:25,920 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:25,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:25,921 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:25,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:25,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:26,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:26,578 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:26,578 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-01 01:09:26,593 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:26,649 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:09:26,650 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:26,653 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:26,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:26,846 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:26,846 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-01 01:09:26,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-01 01:09:26,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-01 01:09:26,847 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:26,847 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 67 states. [2018-10-01 01:09:27,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:27,111 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-01 01:09:27,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-01 01:09:27,111 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 67 [2018-10-01 01:09:27,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:27,112 INFO L225 Difference]: With dead ends: 71 [2018-10-01 01:09:27,112 INFO L226 Difference]: Without dead ends: 69 [2018-10-01 01:09:27,113 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:09:27,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-01 01:09:27,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-01 01:09:27,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-01 01:09:27,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-10-01 01:09:27,116 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2018-10-01 01:09:27,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:27,116 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-10-01 01:09:27,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-01 01:09:27,116 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-10-01 01:09:27,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-01 01:09:27,117 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:27,117 INFO L375 BasicCegarLoop]: trace histogram [65, 1, 1, 1] [2018-10-01 01:09:27,117 INFO L423 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:27,117 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:27,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1900703866, now seen corresponding path program 65 times [2018-10-01 01:09:27,118 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:27,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:27,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:27,119 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:27,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:27,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:27,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:27,921 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:27,921 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:27,928 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:09:27,984 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2018-10-01 01:09:27,984 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:27,987 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:28,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:28,162 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:28,162 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-01 01:09:28,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-01 01:09:28,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-01 01:09:28,164 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:28,164 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 68 states. [2018-10-01 01:09:28,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:28,581 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2018-10-01 01:09:28,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-01 01:09:28,582 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 68 [2018-10-01 01:09:28,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:28,582 INFO L225 Difference]: With dead ends: 72 [2018-10-01 01:09:28,582 INFO L226 Difference]: Without dead ends: 70 [2018-10-01 01:09:28,583 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:09:28,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-10-01 01:09:28,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-10-01 01:09:28,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-01 01:09:28,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-10-01 01:09:28,584 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2018-10-01 01:09:28,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:28,585 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-10-01 01:09:28,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-01 01:09:28,585 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-10-01 01:09:28,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-01 01:09:28,585 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:28,585 INFO L375 BasicCegarLoop]: trace histogram [66, 1, 1, 1] [2018-10-01 01:09:28,585 INFO L423 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:28,585 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:28,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1207718432, now seen corresponding path program 66 times [2018-10-01 01:09:28,586 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:28,586 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:28,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:28,586 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:28,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:28,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:28,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:28,952 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:28,952 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:28,959 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:09:29,010 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2018-10-01 01:09:29,011 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:29,014 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:30,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:30,100 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:30,101 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-10-01 01:09:30,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-01 01:09:30,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-01 01:09:30,101 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:30,102 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 69 states. [2018-10-01 01:09:30,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:30,509 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-01 01:09:30,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-01 01:09:30,510 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 69 [2018-10-01 01:09:30,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:30,510 INFO L225 Difference]: With dead ends: 73 [2018-10-01 01:09:30,510 INFO L226 Difference]: Without dead ends: 71 [2018-10-01 01:09:30,510 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:09:30,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-01 01:09:30,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-01 01:09:30,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-01 01:09:30,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-01 01:09:30,513 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 69 [2018-10-01 01:09:30,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:30,513 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-01 01:09:30,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-01 01:09:30,513 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-01 01:09:30,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-01 01:09:30,514 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:30,514 INFO L375 BasicCegarLoop]: trace histogram [67, 1, 1, 1] [2018-10-01 01:09:30,514 INFO L423 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:30,514 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:30,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1215438138, now seen corresponding path program 67 times [2018-10-01 01:09:30,514 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:30,514 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:30,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:30,515 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:30,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:31,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:31,072 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:31,072 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:31,080 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:31,120 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:31,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:31,250 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:31,250 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-01 01:09:31,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-01 01:09:31,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-01 01:09:31,251 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:31,251 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 70 states. [2018-10-01 01:09:31,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:31,646 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-10-01 01:09:31,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-01 01:09:31,647 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 70 [2018-10-01 01:09:31,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:31,648 INFO L225 Difference]: With dead ends: 74 [2018-10-01 01:09:31,648 INFO L226 Difference]: Without dead ends: 72 [2018-10-01 01:09:31,648 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:09:31,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-01 01:09:31,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-10-01 01:09:31,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-10-01 01:09:31,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-10-01 01:09:31,651 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 70 [2018-10-01 01:09:31,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:31,651 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-10-01 01:09:31,651 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-01 01:09:31,651 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-10-01 01:09:31,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-01 01:09:31,651 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:31,652 INFO L375 BasicCegarLoop]: trace histogram [68, 1, 1, 1] [2018-10-01 01:09:31,652 INFO L423 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:31,652 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:31,652 INFO L82 PathProgramCache]: Analyzing trace with hash 976119520, now seen corresponding path program 68 times [2018-10-01 01:09:31,652 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:31,652 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:31,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:31,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:31,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:31,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:32,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:32,037 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:32,037 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:32,045 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:09:32,085 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:09:32,086 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:32,088 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:32,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:32,222 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:32,222 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-01 01:09:32,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-01 01:09:32,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-01 01:09:32,223 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:32,223 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 71 states. [2018-10-01 01:09:32,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:32,607 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-01 01:09:32,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-01 01:09:32,607 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 71 [2018-10-01 01:09:32,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:32,608 INFO L225 Difference]: With dead ends: 75 [2018-10-01 01:09:32,608 INFO L226 Difference]: Without dead ends: 73 [2018-10-01 01:09:32,608 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:09:32,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-01 01:09:32,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-01 01:09:32,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-01 01:09:32,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-10-01 01:09:32,610 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 71 [2018-10-01 01:09:32,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:32,611 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-10-01 01:09:32,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-01 01:09:32,611 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-10-01 01:09:32,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-01 01:09:32,612 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:32,612 INFO L375 BasicCegarLoop]: trace histogram [69, 1, 1, 1] [2018-10-01 01:09:32,612 INFO L423 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:32,612 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:32,612 INFO L82 PathProgramCache]: Analyzing trace with hash 194930182, now seen corresponding path program 69 times [2018-10-01 01:09:32,612 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:32,613 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:32,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:32,613 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:32,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:33,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:33,095 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:33,095 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:33,102 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:09:33,195 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2018-10-01 01:09:33,195 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:33,198 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:33,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:33,618 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:33,618 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-01 01:09:33,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-01 01:09:33,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-01 01:09:33,619 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:33,619 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 72 states. [2018-10-01 01:09:34,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:34,089 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-10-01 01:09:34,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-01 01:09:34,089 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 72 [2018-10-01 01:09:34,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:34,090 INFO L225 Difference]: With dead ends: 76 [2018-10-01 01:09:34,090 INFO L226 Difference]: Without dead ends: 74 [2018-10-01 01:09:34,091 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:09:34,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-10-01 01:09:34,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-10-01 01:09:34,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-10-01 01:09:34,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-10-01 01:09:34,093 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 72 [2018-10-01 01:09:34,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:34,094 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-10-01 01:09:34,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-01 01:09:34,094 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-10-01 01:09:34,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-01 01:09:34,095 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:34,095 INFO L375 BasicCegarLoop]: trace histogram [70, 1, 1, 1] [2018-10-01 01:09:34,095 INFO L423 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:34,095 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:34,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1747864480, now seen corresponding path program 70 times [2018-10-01 01:09:34,096 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:34,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:34,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:34,096 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:34,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:34,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:34,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:34,664 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:34,664 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:34,671 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:09:34,720 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:09:34,720 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:34,723 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:34,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:34,868 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:34,868 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-10-01 01:09:34,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-01 01:09:34,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-01 01:09:34,869 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:34,869 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 73 states. [2018-10-01 01:09:35,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:35,381 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-01 01:09:35,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-01 01:09:35,381 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 73 [2018-10-01 01:09:35,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:35,382 INFO L225 Difference]: With dead ends: 77 [2018-10-01 01:09:35,382 INFO L226 Difference]: Without dead ends: 75 [2018-10-01 01:09:35,382 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:09:35,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-01 01:09:35,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-01 01:09:35,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-01 01:09:35,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-01 01:09:35,386 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 73 [2018-10-01 01:09:35,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:35,386 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-01 01:09:35,386 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-01 01:09:35,386 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-01 01:09:35,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-01 01:09:35,386 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:35,387 INFO L375 BasicCegarLoop]: trace histogram [71, 1, 1, 1] [2018-10-01 01:09:35,387 INFO L423 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:35,387 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:35,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1650779834, now seen corresponding path program 71 times [2018-10-01 01:09:35,387 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:35,387 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:35,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:35,388 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:35,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:35,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:35,933 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:35,933 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:35,940 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:09:36,027 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-10-01 01:09:36,027 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:36,030 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:36,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:36,447 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:36,448 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-01 01:09:36,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-01 01:09:36,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-01 01:09:36,449 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:36,449 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 74 states. [2018-10-01 01:09:36,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:36,785 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2018-10-01 01:09:36,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-01 01:09:36,785 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 74 [2018-10-01 01:09:36,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:36,786 INFO L225 Difference]: With dead ends: 78 [2018-10-01 01:09:36,786 INFO L226 Difference]: Without dead ends: 76 [2018-10-01 01:09:36,786 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:09:36,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-10-01 01:09:36,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-10-01 01:09:36,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-10-01 01:09:36,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-10-01 01:09:36,789 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 74 [2018-10-01 01:09:36,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:36,789 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-10-01 01:09:36,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-01 01:09:36,790 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-10-01 01:09:36,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-10-01 01:09:36,790 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:36,790 INFO L375 BasicCegarLoop]: trace histogram [72, 1, 1, 1] [2018-10-01 01:09:36,790 INFO L423 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:36,791 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:36,791 INFO L82 PathProgramCache]: Analyzing trace with hash 365428832, now seen corresponding path program 72 times [2018-10-01 01:09:36,791 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:36,791 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:36,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:36,792 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:36,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:36,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:37,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:37,207 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:37,207 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:37,215 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:09:37,313 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-01 01:09:37,314 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:37,316 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:37,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:37,472 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:37,472 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-10-01 01:09:37,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-01 01:09:37,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-01 01:09:37,473 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:37,473 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 75 states. [2018-10-01 01:09:37,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:37,754 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-10-01 01:09:37,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-01 01:09:37,755 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 75 [2018-10-01 01:09:37,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:37,756 INFO L225 Difference]: With dead ends: 79 [2018-10-01 01:09:37,756 INFO L226 Difference]: Without dead ends: 77 [2018-10-01 01:09:37,756 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:09:37,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-01 01:09:37,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-01 01:09:37,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-01 01:09:37,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-10-01 01:09:37,760 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 75 [2018-10-01 01:09:37,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:37,760 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-10-01 01:09:37,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-01 01:09:37,760 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-10-01 01:09:37,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-01 01:09:37,761 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:37,761 INFO L375 BasicCegarLoop]: trace histogram [73, 1, 1, 1] [2018-10-01 01:09:37,761 INFO L423 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:37,761 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:37,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1556611962, now seen corresponding path program 73 times [2018-10-01 01:09:37,762 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:37,762 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:37,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:37,763 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:37,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:37,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:38,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:38,478 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:38,478 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:38,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:38,527 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:38,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:38,684 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:38,685 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-01 01:09:38,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-01 01:09:38,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-01 01:09:38,685 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:38,686 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 76 states. [2018-10-01 01:09:39,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:39,123 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2018-10-01 01:09:39,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-01 01:09:39,123 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 76 [2018-10-01 01:09:39,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:39,124 INFO L225 Difference]: With dead ends: 80 [2018-10-01 01:09:39,124 INFO L226 Difference]: Without dead ends: 78 [2018-10-01 01:09:39,124 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:09:39,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-10-01 01:09:39,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-10-01 01:09:39,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-10-01 01:09:39,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-10-01 01:09:39,126 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 76 [2018-10-01 01:09:39,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:39,126 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-10-01 01:09:39,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-01 01:09:39,127 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-10-01 01:09:39,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-10-01 01:09:39,127 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:39,127 INFO L375 BasicCegarLoop]: trace histogram [74, 1, 1, 1] [2018-10-01 01:09:39,127 INFO L423 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:39,127 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:39,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1010334432, now seen corresponding path program 74 times [2018-10-01 01:09:39,128 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:39,128 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:39,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:39,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:39,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:39,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:39,556 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:39,556 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:39,563 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:09:39,601 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:09:39,601 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:39,604 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:39,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:39,752 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:39,753 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-10-01 01:09:39,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-01 01:09:39,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-01 01:09:39,753 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:39,754 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 77 states. [2018-10-01 01:09:40,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:40,201 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-10-01 01:09:40,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-01 01:09:40,202 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 77 [2018-10-01 01:09:40,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:40,202 INFO L225 Difference]: With dead ends: 81 [2018-10-01 01:09:40,202 INFO L226 Difference]: Without dead ends: 79 [2018-10-01 01:09:40,203 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:09:40,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-01 01:09:40,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-01 01:09:40,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-01 01:09:40,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-10-01 01:09:40,205 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 77 [2018-10-01 01:09:40,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:40,205 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-10-01 01:09:40,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-01 01:09:40,205 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-10-01 01:09:40,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-01 01:09:40,206 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:40,206 INFO L375 BasicCegarLoop]: trace histogram [75, 1, 1, 1] [2018-10-01 01:09:40,206 INFO L423 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:40,206 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:40,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1255600186, now seen corresponding path program 75 times [2018-10-01 01:09:40,207 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:40,207 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:40,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:40,208 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:40,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:40,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:40,611 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:40,611 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:40,618 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:09:40,685 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2018-10-01 01:09:40,685 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:40,688 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:40,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:40,994 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:40,994 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-01 01:09:40,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-01 01:09:40,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-01 01:09:40,995 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:40,995 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 78 states. [2018-10-01 01:09:41,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:41,539 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2018-10-01 01:09:41,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-01 01:09:41,539 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 78 [2018-10-01 01:09:41,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:41,540 INFO L225 Difference]: With dead ends: 82 [2018-10-01 01:09:41,540 INFO L226 Difference]: Without dead ends: 80 [2018-10-01 01:09:41,540 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:09:41,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-10-01 01:09:41,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-10-01 01:09:41,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-10-01 01:09:41,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-10-01 01:09:41,543 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 78 [2018-10-01 01:09:41,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:41,543 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-10-01 01:09:41,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-01 01:09:41,543 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-10-01 01:09:41,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-01 01:09:41,544 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:41,544 INFO L375 BasicCegarLoop]: trace histogram [76, 1, 1, 1] [2018-10-01 01:09:41,544 INFO L423 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:41,545 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:41,545 INFO L82 PathProgramCache]: Analyzing trace with hash -268903968, now seen corresponding path program 76 times [2018-10-01 01:09:41,545 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:41,545 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:41,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:41,546 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:41,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:41,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:41,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:41,943 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:41,943 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:41,951 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:09:41,995 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:09:41,995 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:41,997 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:42,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:42,161 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:42,161 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-10-01 01:09:42,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-01 01:09:42,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-01 01:09:42,162 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:42,162 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 79 states. [2018-10-01 01:09:43,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:43,731 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-10-01 01:09:43,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-01 01:09:43,731 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 79 [2018-10-01 01:09:43,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:43,732 INFO L225 Difference]: With dead ends: 83 [2018-10-01 01:09:43,732 INFO L226 Difference]: Without dead ends: 81 [2018-10-01 01:09:43,732 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:09:43,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-01 01:09:43,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-01 01:09:43,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-01 01:09:43,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-10-01 01:09:43,735 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 79 [2018-10-01 01:09:43,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:43,735 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-10-01 01:09:43,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-01 01:09:43,735 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-10-01 01:09:43,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-01 01:09:43,736 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:43,736 INFO L375 BasicCegarLoop]: trace histogram [77, 1, 1, 1] [2018-10-01 01:09:43,736 INFO L423 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:43,736 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:43,736 INFO L82 PathProgramCache]: Analyzing trace with hash 253907718, now seen corresponding path program 77 times [2018-10-01 01:09:43,736 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:43,736 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:43,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:43,737 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:43,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:44,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:44,122 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:44,122 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:44,129 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:09:44,197 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2018-10-01 01:09:44,197 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:44,201 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:44,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:44,489 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:44,489 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-01 01:09:44,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-01 01:09:44,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-01 01:09:44,490 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:44,490 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 80 states. [2018-10-01 01:09:44,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:44,827 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2018-10-01 01:09:44,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-01 01:09:44,828 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 80 [2018-10-01 01:09:44,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:44,829 INFO L225 Difference]: With dead ends: 84 [2018-10-01 01:09:44,829 INFO L226 Difference]: Without dead ends: 82 [2018-10-01 01:09:44,829 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:09:44,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-10-01 01:09:44,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-10-01 01:09:44,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-10-01 01:09:44,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-10-01 01:09:44,832 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 80 [2018-10-01 01:09:44,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:44,832 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-10-01 01:09:44,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-01 01:09:44,833 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-10-01 01:09:44,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-10-01 01:09:44,833 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:44,833 INFO L375 BasicCegarLoop]: trace histogram [78, 1, 1, 1] [2018-10-01 01:09:44,833 INFO L423 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:44,834 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:44,834 INFO L82 PathProgramCache]: Analyzing trace with hash -718799200, now seen corresponding path program 78 times [2018-10-01 01:09:44,834 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:44,834 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:44,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:44,835 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:44,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:45,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:45,313 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:45,314 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:45,322 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:09:45,388 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2018-10-01 01:09:45,388 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:45,391 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:45,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:45,547 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:45,547 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-10-01 01:09:45,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-01 01:09:45,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-01 01:09:45,548 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:45,548 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 81 states. [2018-10-01 01:09:46,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:46,047 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-10-01 01:09:46,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-01 01:09:46,047 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 81 [2018-10-01 01:09:46,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:46,048 INFO L225 Difference]: With dead ends: 85 [2018-10-01 01:09:46,048 INFO L226 Difference]: Without dead ends: 83 [2018-10-01 01:09:46,048 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:09:46,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-01 01:09:46,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-01 01:09:46,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-01 01:09:46,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-01 01:09:46,051 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 81 [2018-10-01 01:09:46,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:46,051 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-01 01:09:46,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-01 01:09:46,051 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-01 01:09:46,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-01 01:09:46,052 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:46,052 INFO L375 BasicCegarLoop]: trace histogram [79, 1, 1, 1] [2018-10-01 01:09:46,052 INFO L423 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:46,052 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:46,052 INFO L82 PathProgramCache]: Analyzing trace with hash -807942586, now seen corresponding path program 79 times [2018-10-01 01:09:46,052 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:46,053 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:46,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:46,053 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:46,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:46,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:46,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:46,615 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:46,615 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:46,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:46,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:46,668 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:46,881 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:46,901 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:46,901 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-01 01:09:46,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-01 01:09:46,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-01 01:09:46,902 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:46,902 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 82 states. [2018-10-01 01:09:47,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:47,391 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2018-10-01 01:09:47,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-01 01:09:47,392 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 82 [2018-10-01 01:09:47,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:47,393 INFO L225 Difference]: With dead ends: 86 [2018-10-01 01:09:47,393 INFO L226 Difference]: Without dead ends: 84 [2018-10-01 01:09:47,393 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:09:47,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-10-01 01:09:47,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-10-01 01:09:47,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-10-01 01:09:47,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-10-01 01:09:47,395 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 82 [2018-10-01 01:09:47,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:47,395 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-10-01 01:09:47,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-01 01:09:47,395 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-10-01 01:09:47,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-01 01:09:47,396 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:47,396 INFO L375 BasicCegarLoop]: trace histogram [80, 1, 1, 1] [2018-10-01 01:09:47,396 INFO L423 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:47,396 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:47,396 INFO L82 PathProgramCache]: Analyzing trace with hash 723579744, now seen corresponding path program 80 times [2018-10-01 01:09:47,396 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:47,396 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:47,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:47,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:47,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:47,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:47,864 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:47,864 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:47,871 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:09:47,917 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:09:47,918 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:47,920 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:48,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:48,830 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:48,830 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-10-01 01:09:48,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-01 01:09:48,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-01 01:09:48,831 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:48,831 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 83 states. [2018-10-01 01:09:49,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:49,156 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-10-01 01:09:49,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-01 01:09:49,157 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 83 [2018-10-01 01:09:49,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:49,157 INFO L225 Difference]: With dead ends: 87 [2018-10-01 01:09:49,158 INFO L226 Difference]: Without dead ends: 85 [2018-10-01 01:09:49,158 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:09:49,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-01 01:09:49,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-01 01:09:49,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-01 01:09:49,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-10-01 01:09:49,160 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 83 [2018-10-01 01:09:49,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:49,160 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-10-01 01:09:49,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-01 01:09:49,160 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-10-01 01:09:49,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-01 01:09:49,160 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:49,161 INFO L375 BasicCegarLoop]: trace histogram [81, 1, 1, 1] [2018-10-01 01:09:49,161 INFO L423 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:49,161 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:49,161 INFO L82 PathProgramCache]: Analyzing trace with hash 956131718, now seen corresponding path program 81 times [2018-10-01 01:09:49,161 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:49,161 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:49,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:49,162 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:49,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:49,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:49,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:49,854 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:49,854 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:49,861 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:09:49,932 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2018-10-01 01:09:49,932 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:49,935 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:50,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:50,102 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:50,102 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-10-01 01:09:50,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-01 01:09:50,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-01 01:09:50,103 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:50,103 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 84 states. [2018-10-01 01:09:50,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:50,585 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2018-10-01 01:09:50,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-01 01:09:50,586 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 84 [2018-10-01 01:09:50,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:50,587 INFO L225 Difference]: With dead ends: 88 [2018-10-01 01:09:50,587 INFO L226 Difference]: Without dead ends: 86 [2018-10-01 01:09:50,587 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:09:50,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-10-01 01:09:50,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-10-01 01:09:50,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-10-01 01:09:50,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-10-01 01:09:50,589 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 84 [2018-10-01 01:09:50,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:50,589 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-10-01 01:09:50,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-01 01:09:50,590 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-10-01 01:09:50,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-01 01:09:50,590 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:50,590 INFO L375 BasicCegarLoop]: trace histogram [82, 1, 1, 1] [2018-10-01 01:09:50,591 INFO L423 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:50,591 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:50,591 INFO L82 PathProgramCache]: Analyzing trace with hash -424691680, now seen corresponding path program 82 times [2018-10-01 01:09:50,591 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:50,591 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:50,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:50,592 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:50,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:51,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:51,454 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:51,454 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:51,464 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:09:51,515 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:09:51,515 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:51,518 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:51,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:51,963 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:51,963 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-10-01 01:09:51,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-01 01:09:51,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-01 01:09:51,964 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:51,964 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 85 states. [2018-10-01 01:09:52,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:52,741 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-01 01:09:52,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-01 01:09:52,742 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 85 [2018-10-01 01:09:52,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:52,743 INFO L225 Difference]: With dead ends: 89 [2018-10-01 01:09:52,743 INFO L226 Difference]: Without dead ends: 87 [2018-10-01 01:09:52,743 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:09:52,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-01 01:09:52,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-01 01:09:52,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-01 01:09:52,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-10-01 01:09:52,746 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 85 [2018-10-01 01:09:52,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:52,746 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-10-01 01:09:52,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-01 01:09:52,747 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-10-01 01:09:52,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-01 01:09:52,747 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:52,747 INFO L375 BasicCegarLoop]: trace histogram [83, 1, 1, 1] [2018-10-01 01:09:52,748 INFO L423 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:52,748 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:52,748 INFO L82 PathProgramCache]: Analyzing trace with hash -280544058, now seen corresponding path program 83 times [2018-10-01 01:09:52,748 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:52,748 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:52,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:52,749 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:52,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:53,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:53,336 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:53,336 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:53,345 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:09:53,421 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2018-10-01 01:09:53,421 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:53,425 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:53,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:53,597 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:53,598 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-01 01:09:53,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-01 01:09:53,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-01 01:09:53,599 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:53,599 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 86 states. [2018-10-01 01:09:54,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:54,126 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2018-10-01 01:09:54,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-01 01:09:54,126 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 86 [2018-10-01 01:09:54,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:54,127 INFO L225 Difference]: With dead ends: 90 [2018-10-01 01:09:54,127 INFO L226 Difference]: Without dead ends: 88 [2018-10-01 01:09:54,127 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:09:54,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-10-01 01:09:54,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-10-01 01:09:54,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-10-01 01:09:54,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-10-01 01:09:54,129 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 86 [2018-10-01 01:09:54,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:54,129 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-10-01 01:09:54,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-01 01:09:54,129 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-10-01 01:09:54,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-01 01:09:54,130 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:54,130 INFO L375 BasicCegarLoop]: trace histogram [84, 1, 1, 1] [2018-10-01 01:09:54,130 INFO L423 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:54,130 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:54,130 INFO L82 PathProgramCache]: Analyzing trace with hash -106935072, now seen corresponding path program 84 times [2018-10-01 01:09:54,130 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:54,130 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:54,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:54,131 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:54,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:54,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:54,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:54,568 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:54,568 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:54,577 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:09:54,650 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-01 01:09:54,650 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:54,653 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:54,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:54,825 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:54,826 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-10-01 01:09:54,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-01 01:09:54,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-01 01:09:54,827 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:54,827 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 87 states. [2018-10-01 01:09:55,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:55,286 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-01 01:09:55,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-01 01:09:55,286 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 87 [2018-10-01 01:09:55,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:55,287 INFO L225 Difference]: With dead ends: 91 [2018-10-01 01:09:55,287 INFO L226 Difference]: Without dead ends: 89 [2018-10-01 01:09:55,287 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:09:55,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-01 01:09:55,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-10-01 01:09:55,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-01 01:09:55,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-10-01 01:09:55,290 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 87 [2018-10-01 01:09:55,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:55,290 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-10-01 01:09:55,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-01 01:09:55,290 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-10-01 01:09:55,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-01 01:09:55,291 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:55,291 INFO L375 BasicCegarLoop]: trace histogram [85, 1, 1, 1] [2018-10-01 01:09:55,292 INFO L423 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:55,292 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:55,292 INFO L82 PathProgramCache]: Analyzing trace with hash 979976198, now seen corresponding path program 85 times [2018-10-01 01:09:55,292 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:55,292 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:55,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:55,293 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:55,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:55,753 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:55,753 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:55,753 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:55,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:55,811 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:55,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:55,986 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:55,986 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-01 01:09:55,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-01 01:09:55,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-01 01:09:55,987 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:55,988 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 88 states. [2018-10-01 01:09:56,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:56,505 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2018-10-01 01:09:56,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-01 01:09:56,506 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 88 [2018-10-01 01:09:56,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:56,507 INFO L225 Difference]: With dead ends: 92 [2018-10-01 01:09:56,507 INFO L226 Difference]: Without dead ends: 90 [2018-10-01 01:09:56,507 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:09:56,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-10-01 01:09:56,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-10-01 01:09:56,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-10-01 01:09:56,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-10-01 01:09:56,509 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 88 [2018-10-01 01:09:56,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:56,510 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-10-01 01:09:56,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-01 01:09:56,510 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-10-01 01:09:56,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-01 01:09:56,510 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:56,510 INFO L375 BasicCegarLoop]: trace histogram [86, 1, 1, 1] [2018-10-01 01:09:56,510 INFO L423 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:56,511 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:56,511 INFO L82 PathProgramCache]: Analyzing trace with hash 314487200, now seen corresponding path program 86 times [2018-10-01 01:09:56,511 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:56,511 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:56,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:56,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:56,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:56,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:56,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:56,988 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:56,988 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:56,996 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:09:57,045 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:09:57,045 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:57,048 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:57,203 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:57,223 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:57,223 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-10-01 01:09:57,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-01 01:09:57,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-01 01:09:57,225 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:57,225 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 89 states. [2018-10-01 01:09:57,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:57,583 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-10-01 01:09:57,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-01 01:09:57,583 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 89 [2018-10-01 01:09:57,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:57,584 INFO L225 Difference]: With dead ends: 93 [2018-10-01 01:09:57,584 INFO L226 Difference]: Without dead ends: 91 [2018-10-01 01:09:57,584 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:09:57,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-01 01:09:57,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-01 01:09:57,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-01 01:09:57,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-10-01 01:09:57,586 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 89 [2018-10-01 01:09:57,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:57,587 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-10-01 01:09:57,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-01 01:09:57,587 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-10-01 01:09:57,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-01 01:09:57,587 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:57,587 INFO L375 BasicCegarLoop]: trace histogram [87, 1, 1, 1] [2018-10-01 01:09:57,587 INFO L423 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:57,587 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:57,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1159164742, now seen corresponding path program 87 times [2018-10-01 01:09:57,588 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:57,588 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:57,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:57,588 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:57,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:57,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:58,155 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:58,156 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:58,156 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:58,166 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:09:58,251 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2018-10-01 01:09:58,251 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:58,254 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:58,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:58,433 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:58,433 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-10-01 01:09:58,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-01 01:09:58,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-01 01:09:58,434 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:58,434 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 90 states. [2018-10-01 01:09:58,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:58,805 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-10-01 01:09:58,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-01 01:09:58,806 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 90 [2018-10-01 01:09:58,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:58,806 INFO L225 Difference]: With dead ends: 94 [2018-10-01 01:09:58,806 INFO L226 Difference]: Without dead ends: 92 [2018-10-01 01:09:58,807 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:09:58,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-10-01 01:09:58,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-10-01 01:09:58,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-10-01 01:09:58,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-10-01 01:09:58,809 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 90 [2018-10-01 01:09:58,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:58,809 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-10-01 01:09:58,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-01 01:09:58,809 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-10-01 01:09:58,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-01 01:09:58,809 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:58,809 INFO L375 BasicCegarLoop]: trace histogram [88, 1, 1, 1] [2018-10-01 01:09:58,810 INFO L423 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:58,810 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:58,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1574364768, now seen corresponding path program 88 times [2018-10-01 01:09:58,810 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:58,810 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:58,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:58,811 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:58,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:59,281 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:59,282 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:59,282 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:59,289 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:09:59,344 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:09:59,344 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:59,347 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:59,504 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:59,525 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:59,526 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-10-01 01:09:59,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-01 01:09:59,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-01 01:09:59,527 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:59,527 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 91 states. [2018-10-01 01:09:59,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:59,906 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-10-01 01:09:59,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-01 01:09:59,907 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 91 [2018-10-01 01:09:59,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:59,907 INFO L225 Difference]: With dead ends: 95 [2018-10-01 01:09:59,907 INFO L226 Difference]: Without dead ends: 93 [2018-10-01 01:09:59,907 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:09:59,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-01 01:09:59,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-01 01:09:59,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-01 01:09:59,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-10-01 01:09:59,909 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 91 [2018-10-01 01:09:59,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:59,910 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-10-01 01:09:59,910 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-01 01:09:59,910 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-10-01 01:09:59,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-01 01:09:59,910 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:59,910 INFO L375 BasicCegarLoop]: trace histogram [89, 1, 1, 1] [2018-10-01 01:09:59,910 INFO L423 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:59,910 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:59,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1560663686, now seen corresponding path program 89 times [2018-10-01 01:09:59,911 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:59,911 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:59,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:59,911 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:59,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:00,387 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:00,388 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:00,388 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:00,395 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:10:00,539 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2018-10-01 01:10:00,540 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:00,544 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:00,798 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:00,817 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:00,818 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-10-01 01:10:00,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-01 01:10:00,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-01 01:10:00,819 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:00,819 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 92 states. [2018-10-01 01:10:01,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:01,222 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2018-10-01 01:10:01,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-01 01:10:01,222 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 92 [2018-10-01 01:10:01,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:01,223 INFO L225 Difference]: With dead ends: 96 [2018-10-01 01:10:01,223 INFO L226 Difference]: Without dead ends: 94 [2018-10-01 01:10:01,223 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:10:01,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-10-01 01:10:01,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-10-01 01:10:01,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-10-01 01:10:01,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-10-01 01:10:01,226 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 92 [2018-10-01 01:10:01,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:01,226 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-10-01 01:10:01,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-01 01:10:01,226 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-10-01 01:10:01,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-01 01:10:01,227 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:01,227 INFO L375 BasicCegarLoop]: trace histogram [90, 1, 1, 1] [2018-10-01 01:10:01,227 INFO L423 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:01,227 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:01,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1135930144, now seen corresponding path program 90 times [2018-10-01 01:10:01,227 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:01,228 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:01,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:01,228 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:01,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:01,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:01,915 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:01,915 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:01,915 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:01,923 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:10:02,004 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2018-10-01 01:10:02,004 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:02,008 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:02,168 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:02,188 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:02,188 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-10-01 01:10:02,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-01 01:10:02,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-01 01:10:02,189 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:02,189 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 93 states. [2018-10-01 01:10:02,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:02,625 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-10-01 01:10:02,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-01 01:10:02,626 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 93 [2018-10-01 01:10:02,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:02,626 INFO L225 Difference]: With dead ends: 97 [2018-10-01 01:10:02,626 INFO L226 Difference]: Without dead ends: 95 [2018-10-01 01:10:02,627 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:10:02,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-01 01:10:02,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-01 01:10:02,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-01 01:10:02,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-10-01 01:10:02,629 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 93 [2018-10-01 01:10:02,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:02,629 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-10-01 01:10:02,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-01 01:10:02,630 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-10-01 01:10:02,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-01 01:10:02,630 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:02,630 INFO L375 BasicCegarLoop]: trace histogram [91, 1, 1, 1] [2018-10-01 01:10:02,631 INFO L423 AbstractCegarLoop]: === Iteration 92 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:02,631 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:02,631 INFO L82 PathProgramCache]: Analyzing trace with hash 854092230, now seen corresponding path program 91 times [2018-10-01 01:10:02,631 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:02,631 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:02,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:02,632 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:02,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:02,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:03,120 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:03,120 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:03,120 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:03,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:03,180 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:03,348 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:03,368 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:03,368 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-10-01 01:10:03,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-01 01:10:03,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-01 01:10:03,369 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:03,369 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 94 states. [2018-10-01 01:10:03,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:03,938 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2018-10-01 01:10:03,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-01 01:10:03,939 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 94 [2018-10-01 01:10:03,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:03,939 INFO L225 Difference]: With dead ends: 98 [2018-10-01 01:10:03,939 INFO L226 Difference]: Without dead ends: 96 [2018-10-01 01:10:03,940 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:10:03,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-10-01 01:10:03,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-10-01 01:10:03,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-10-01 01:10:03,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-10-01 01:10:03,942 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 94 [2018-10-01 01:10:03,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:03,942 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-10-01 01:10:03,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-01 01:10:03,942 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-10-01 01:10:03,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-01 01:10:03,942 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:03,943 INFO L375 BasicCegarLoop]: trace histogram [92, 1, 1, 1] [2018-10-01 01:10:03,943 INFO L423 AbstractCegarLoop]: === Iteration 93 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:03,943 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:03,943 INFO L82 PathProgramCache]: Analyzing trace with hash 707051488, now seen corresponding path program 92 times [2018-10-01 01:10:03,943 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:03,943 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:03,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:03,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:03,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:04,610 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:04,610 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:04,610 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:04,617 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:10:04,670 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:10:04,671 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:04,674 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:04,898 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:04,920 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:04,920 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-10-01 01:10:04,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-01 01:10:04,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-01 01:10:04,921 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:04,921 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 95 states. [2018-10-01 01:10:05,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:05,558 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-10-01 01:10:05,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-01 01:10:05,558 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 95 [2018-10-01 01:10:05,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:05,559 INFO L225 Difference]: With dead ends: 99 [2018-10-01 01:10:05,559 INFO L226 Difference]: Without dead ends: 97 [2018-10-01 01:10:05,559 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:10:05,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-10-01 01:10:05,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-10-01 01:10:05,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-01 01:10:05,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-10-01 01:10:05,561 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 95 [2018-10-01 01:10:05,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:05,562 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-10-01 01:10:05,562 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-01 01:10:05,562 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-10-01 01:10:05,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-01 01:10:05,562 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:05,562 INFO L375 BasicCegarLoop]: trace histogram [93, 1, 1, 1] [2018-10-01 01:10:05,562 INFO L423 AbstractCegarLoop]: === Iteration 94 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:05,563 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:05,563 INFO L82 PathProgramCache]: Analyzing trace with hash 443755782, now seen corresponding path program 93 times [2018-10-01 01:10:05,563 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:05,563 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:05,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:05,564 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:05,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:05,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:06,072 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:06,072 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:06,072 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:06,080 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:10:06,173 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2018-10-01 01:10:06,173 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:06,176 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:06,500 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:06,520 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:06,521 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-10-01 01:10:06,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-01 01:10:06,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-01 01:10:06,522 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:06,522 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 96 states. [2018-10-01 01:10:07,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:07,067 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2018-10-01 01:10:07,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-01 01:10:07,068 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 96 [2018-10-01 01:10:07,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:07,068 INFO L225 Difference]: With dead ends: 100 [2018-10-01 01:10:07,069 INFO L226 Difference]: Without dead ends: 98 [2018-10-01 01:10:07,069 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:10:07,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-10-01 01:10:07,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-10-01 01:10:07,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-10-01 01:10:07,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-10-01 01:10:07,071 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 96 [2018-10-01 01:10:07,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:07,071 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-10-01 01:10:07,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-01 01:10:07,071 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-10-01 01:10:07,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-01 01:10:07,071 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:07,071 INFO L375 BasicCegarLoop]: trace histogram [94, 1, 1, 1] [2018-10-01 01:10:07,072 INFO L423 AbstractCegarLoop]: === Iteration 95 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:07,072 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:07,072 INFO L82 PathProgramCache]: Analyzing trace with hash 871523488, now seen corresponding path program 94 times [2018-10-01 01:10:07,072 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:07,072 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:07,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:07,073 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:07,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:07,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:07,612 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:07,613 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:07,613 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:07,624 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:10:07,682 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:10:07,683 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:07,686 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:07,858 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:07,879 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:07,880 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-10-01 01:10:07,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-01 01:10:07,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-01 01:10:07,881 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:07,881 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 97 states. [2018-10-01 01:10:08,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:08,538 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-01 01:10:08,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-01 01:10:08,538 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 97 [2018-10-01 01:10:08,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:08,539 INFO L225 Difference]: With dead ends: 101 [2018-10-01 01:10:08,539 INFO L226 Difference]: Without dead ends: 99 [2018-10-01 01:10:08,539 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:10:08,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-01 01:10:08,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-01 01:10:08,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-01 01:10:08,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-10-01 01:10:08,541 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 97 [2018-10-01 01:10:08,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:08,542 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-10-01 01:10:08,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-01 01:10:08,542 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-10-01 01:10:08,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-01 01:10:08,542 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:08,543 INFO L375 BasicCegarLoop]: trace histogram [95, 1, 1, 1] [2018-10-01 01:10:08,543 INFO L423 AbstractCegarLoop]: === Iteration 96 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:08,543 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:08,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1247420486, now seen corresponding path program 95 times [2018-10-01 01:10:08,543 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:08,543 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:08,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:08,544 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:08,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:09,064 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:09,065 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:09,065 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:09,072 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:10:09,163 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2018-10-01 01:10:09,164 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:09,167 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:09,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:09,363 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:09,364 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-10-01 01:10:09,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-01 01:10:09,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-01 01:10:09,365 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:09,365 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 98 states. [2018-10-01 01:10:09,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:09,849 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2018-10-01 01:10:09,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-01 01:10:09,849 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 98 [2018-10-01 01:10:09,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:09,850 INFO L225 Difference]: With dead ends: 102 [2018-10-01 01:10:09,850 INFO L226 Difference]: Without dead ends: 100 [2018-10-01 01:10:09,850 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:10:09,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-10-01 01:10:09,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-10-01 01:10:09,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-10-01 01:10:09,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-10-01 01:10:09,853 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 98 [2018-10-01 01:10:09,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:09,853 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-10-01 01:10:09,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-01 01:10:09,853 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-10-01 01:10:09,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-01 01:10:09,854 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:09,854 INFO L375 BasicCegarLoop]: trace histogram [96, 1, 1, 1] [2018-10-01 01:10:09,854 INFO L423 AbstractCegarLoop]: === Iteration 97 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:09,854 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:09,855 INFO L82 PathProgramCache]: Analyzing trace with hash 15325536, now seen corresponding path program 96 times [2018-10-01 01:10:09,855 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:09,855 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:09,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:09,856 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:09,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:09,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:10,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:10,421 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:10,421 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:10,428 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:10:10,517 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-01 01:10:10,517 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:10,520 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:10,694 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:10,714 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:10,714 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-10-01 01:10:10,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-10-01 01:10:10,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-10-01 01:10:10,716 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:10,716 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 99 states. [2018-10-01 01:10:11,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:11,156 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-10-01 01:10:11,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-01 01:10:11,156 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 99 [2018-10-01 01:10:11,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:11,157 INFO L225 Difference]: With dead ends: 103 [2018-10-01 01:10:11,157 INFO L226 Difference]: Without dead ends: 101 [2018-10-01 01:10:11,157 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:10:11,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-01 01:10:11,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-01 01:10:11,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-01 01:10:11,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-10-01 01:10:11,159 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 99 [2018-10-01 01:10:11,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:11,160 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-10-01 01:10:11,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-10-01 01:10:11,160 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-10-01 01:10:11,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-01 01:10:11,161 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:11,161 INFO L375 BasicCegarLoop]: trace histogram [97, 1, 1, 1] [2018-10-01 01:10:11,161 INFO L423 AbstractCegarLoop]: === Iteration 98 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:11,161 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:11,161 INFO L82 PathProgramCache]: Analyzing trace with hash 475087750, now seen corresponding path program 97 times [2018-10-01 01:10:11,162 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:11,162 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:11,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:11,162 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:11,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:11,969 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:11,969 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:11,969 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:11,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:12,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:12,034 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:12,199 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:12,219 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:12,219 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-10-01 01:10:12,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-01 01:10:12,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-01 01:10:12,221 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:12,221 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 100 states. [2018-10-01 01:10:12,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:12,929 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-10-01 01:10:12,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-01 01:10:12,929 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 100 [2018-10-01 01:10:12,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:12,930 INFO L225 Difference]: With dead ends: 104 [2018-10-01 01:10:12,930 INFO L226 Difference]: Without dead ends: 102 [2018-10-01 01:10:12,930 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:10:12,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-10-01 01:10:12,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-10-01 01:10:12,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-10-01 01:10:12,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-10-01 01:10:12,933 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 100 [2018-10-01 01:10:12,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:12,933 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-10-01 01:10:12,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-01 01:10:12,933 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-10-01 01:10:12,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-01 01:10:12,933 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:12,934 INFO L375 BasicCegarLoop]: trace histogram [98, 1, 1, 1] [2018-10-01 01:10:12,934 INFO L423 AbstractCegarLoop]: === Iteration 99 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:12,934 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:12,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1842814496, now seen corresponding path program 98 times [2018-10-01 01:10:12,934 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:12,934 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:12,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:12,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:12,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:12,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:13,480 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:13,481 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:13,481 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:13,488 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:10:13,542 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:10:13,542 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:13,546 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:13,731 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:13,752 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:13,753 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-10-01 01:10:13,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-01 01:10:13,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-01 01:10:13,754 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:13,754 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 101 states. [2018-10-01 01:10:14,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:14,432 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-01 01:10:14,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-01 01:10:14,432 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 101 [2018-10-01 01:10:14,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:14,433 INFO L225 Difference]: With dead ends: 105 [2018-10-01 01:10:14,433 INFO L226 Difference]: Without dead ends: 103 [2018-10-01 01:10:14,433 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:10:14,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-01 01:10:14,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-01 01:10:14,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-01 01:10:14,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-10-01 01:10:14,436 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 101 [2018-10-01 01:10:14,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:14,436 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-10-01 01:10:14,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-01 01:10:14,436 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-10-01 01:10:14,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-01 01:10:14,437 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:14,437 INFO L375 BasicCegarLoop]: trace histogram [99, 1, 1, 1] [2018-10-01 01:10:14,437 INFO L423 AbstractCegarLoop]: === Iteration 100 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:14,437 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:14,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1292670662, now seen corresponding path program 99 times [2018-10-01 01:10:14,437 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:14,438 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:14,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:14,438 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:14,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:14,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:14,995 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:14,995 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:15,003 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:10:15,101 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2018-10-01 01:10:15,101 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:15,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:15,283 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:15,304 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:15,304 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-10-01 01:10:15,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-01 01:10:15,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-01 01:10:15,305 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:15,305 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 102 states. [2018-10-01 01:10:15,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:15,948 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2018-10-01 01:10:15,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-01 01:10:15,949 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 102 [2018-10-01 01:10:15,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:15,950 INFO L225 Difference]: With dead ends: 106 [2018-10-01 01:10:15,950 INFO L226 Difference]: Without dead ends: 104 [2018-10-01 01:10:15,950 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:10:15,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-10-01 01:10:15,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-10-01 01:10:15,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-10-01 01:10:15,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-10-01 01:10:15,952 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 102 [2018-10-01 01:10:15,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:15,952 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-10-01 01:10:15,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-01 01:10:15,952 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-10-01 01:10:15,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-01 01:10:15,953 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:15,953 INFO L375 BasicCegarLoop]: trace histogram [100, 1, 1, 1] [2018-10-01 01:10:15,953 INFO L423 AbstractCegarLoop]: === Iteration 101 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:15,953 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:15,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1418080992, now seen corresponding path program 100 times [2018-10-01 01:10:15,953 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:15,953 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:15,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:15,954 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:15,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:16,517 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:16,517 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:16,518 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:16,525 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:10:16,589 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:10:16,590 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:16,593 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:16,906 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:16,926 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:16,926 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-10-01 01:10:16,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-01 01:10:16,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-01 01:10:16,927 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:16,927 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 103 states. [2018-10-01 01:10:17,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:17,566 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-10-01 01:10:17,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-01 01:10:17,566 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 103 [2018-10-01 01:10:17,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:17,567 INFO L225 Difference]: With dead ends: 107 [2018-10-01 01:10:17,567 INFO L226 Difference]: Without dead ends: 105 [2018-10-01 01:10:17,567 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:10:17,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-01 01:10:17,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-10-01 01:10:17,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-01 01:10:17,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-10-01 01:10:17,570 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 103 [2018-10-01 01:10:17,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:17,571 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-10-01 01:10:17,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-01 01:10:17,571 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-10-01 01:10:17,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-01 01:10:17,571 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:17,572 INFO L375 BasicCegarLoop]: trace histogram [101, 1, 1, 1] [2018-10-01 01:10:17,572 INFO L423 AbstractCegarLoop]: === Iteration 102 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:17,572 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:17,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1010833926, now seen corresponding path program 101 times [2018-10-01 01:10:17,572 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:17,572 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:17,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:17,573 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:17,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:18,196 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:18,196 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:18,196 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:18,203 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:10:18,306 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2018-10-01 01:10:18,306 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:18,310 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:18,492 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:18,512 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:18,512 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-10-01 01:10:18,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-01 01:10:18,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-01 01:10:18,514 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:18,514 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 104 states. [2018-10-01 01:10:19,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:19,177 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-10-01 01:10:19,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-01 01:10:19,178 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 104 [2018-10-01 01:10:19,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:19,179 INFO L225 Difference]: With dead ends: 108 [2018-10-01 01:10:19,179 INFO L226 Difference]: Without dead ends: 106 [2018-10-01 01:10:19,179 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:10:19,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-10-01 01:10:19,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-10-01 01:10:19,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-10-01 01:10:19,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-10-01 01:10:19,182 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 104 [2018-10-01 01:10:19,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:19,182 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-10-01 01:10:19,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-01 01:10:19,182 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-10-01 01:10:19,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-01 01:10:19,183 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:19,183 INFO L375 BasicCegarLoop]: trace histogram [102, 1, 1, 1] [2018-10-01 01:10:19,183 INFO L423 AbstractCegarLoop]: === Iteration 103 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:19,184 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:19,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1271076768, now seen corresponding path program 102 times [2018-10-01 01:10:19,184 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:19,184 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:19,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:19,185 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:19,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:19,817 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:19,817 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:19,818 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:19,825 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:10:19,918 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2018-10-01 01:10:19,919 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:19,923 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:20,108 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:20,129 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:20,129 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-10-01 01:10:20,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-10-01 01:10:20,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-10-01 01:10:20,131 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:20,131 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 105 states. [2018-10-01 01:10:20,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:20,826 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-01 01:10:20,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-01 01:10:20,826 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 105 [2018-10-01 01:10:20,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:20,827 INFO L225 Difference]: With dead ends: 109 [2018-10-01 01:10:20,827 INFO L226 Difference]: Without dead ends: 107 [2018-10-01 01:10:20,827 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:10:20,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-01 01:10:20,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-01 01:10:20,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-01 01:10:20,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-01 01:10:20,830 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 105 [2018-10-01 01:10:20,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:20,830 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-01 01:10:20,830 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-10-01 01:10:20,830 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-01 01:10:20,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-01 01:10:20,831 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:20,831 INFO L375 BasicCegarLoop]: trace histogram [103, 1, 1, 1] [2018-10-01 01:10:20,831 INFO L423 AbstractCegarLoop]: === Iteration 104 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:20,831 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:20,832 INFO L82 PathProgramCache]: Analyzing trace with hash 748670278, now seen corresponding path program 103 times [2018-10-01 01:10:20,832 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:20,832 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:20,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:20,832 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:20,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:21,443 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:21,443 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:21,443 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:21,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:21,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:21,511 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:21,836 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:21,856 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:21,857 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-10-01 01:10:21,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-01 01:10:21,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-01 01:10:21,858 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:21,858 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 106 states. [2018-10-01 01:10:22,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:22,730 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2018-10-01 01:10:22,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-01 01:10:22,730 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 106 [2018-10-01 01:10:22,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:22,731 INFO L225 Difference]: With dead ends: 110 [2018-10-01 01:10:22,731 INFO L226 Difference]: Without dead ends: 108 [2018-10-01 01:10:22,731 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:10:22,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-10-01 01:10:22,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-10-01 01:10:22,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-10-01 01:10:22,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-10-01 01:10:22,733 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 106 [2018-10-01 01:10:22,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:22,733 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-10-01 01:10:22,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-01 01:10:22,734 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-10-01 01:10:22,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-01 01:10:22,734 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:22,734 INFO L375 BasicCegarLoop]: trace histogram [104, 1, 1, 1] [2018-10-01 01:10:22,734 INFO L423 AbstractCegarLoop]: === Iteration 105 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:22,734 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:22,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1733938272, now seen corresponding path program 104 times [2018-10-01 01:10:22,735 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:22,735 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:22,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:22,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:22,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:23,487 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:23,488 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:23,488 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:23,495 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:10:23,553 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:10:23,554 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:23,557 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:23,837 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:23,858 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:23,859 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-10-01 01:10:23,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-10-01 01:10:23,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-10-01 01:10:23,860 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:23,860 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 107 states. [2018-10-01 01:10:24,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:24,377 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-10-01 01:10:24,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-01 01:10:24,378 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 107 [2018-10-01 01:10:24,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:24,378 INFO L225 Difference]: With dead ends: 111 [2018-10-01 01:10:24,378 INFO L226 Difference]: Without dead ends: 109 [2018-10-01 01:10:24,378 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:10:24,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-01 01:10:24,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-10-01 01:10:24,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-01 01:10:24,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-10-01 01:10:24,381 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 107 [2018-10-01 01:10:24,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:24,382 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-10-01 01:10:24,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-10-01 01:10:24,382 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-10-01 01:10:24,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-01 01:10:24,382 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:24,383 INFO L375 BasicCegarLoop]: trace histogram [105, 1, 1, 1] [2018-10-01 01:10:24,383 INFO L423 AbstractCegarLoop]: === Iteration 106 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:24,383 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:24,383 INFO L82 PathProgramCache]: Analyzing trace with hash -2082492282, now seen corresponding path program 105 times [2018-10-01 01:10:24,383 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:24,383 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:24,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:24,384 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:24,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:24,975 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:24,975 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:24,975 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:24,999 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:10:25,107 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2018-10-01 01:10:25,107 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:25,110 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:25,293 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:25,314 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:25,314 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-10-01 01:10:25,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-01 01:10:25,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-01 01:10:25,315 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:25,315 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 108 states. [2018-10-01 01:10:25,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:25,837 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2018-10-01 01:10:25,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-01 01:10:25,837 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 108 [2018-10-01 01:10:25,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:25,838 INFO L225 Difference]: With dead ends: 112 [2018-10-01 01:10:25,838 INFO L226 Difference]: Without dead ends: 110 [2018-10-01 01:10:25,838 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:10:25,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-10-01 01:10:25,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-10-01 01:10:25,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-10-01 01:10:25,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-10-01 01:10:25,840 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 108 [2018-10-01 01:10:25,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:25,840 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-10-01 01:10:25,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-01 01:10:25,840 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-10-01 01:10:25,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-01 01:10:25,841 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:25,841 INFO L375 BasicCegarLoop]: trace histogram [106, 1, 1, 1] [2018-10-01 01:10:25,841 INFO L423 AbstractCegarLoop]: === Iteration 107 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:25,841 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:25,841 INFO L82 PathProgramCache]: Analyzing trace with hash -132755168, now seen corresponding path program 106 times [2018-10-01 01:10:25,841 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:25,842 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:25,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:25,842 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:25,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:26,429 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:26,429 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:26,430 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:26,437 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:10:26,504 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:10:26,504 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:26,509 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:26,705 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:26,726 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:26,726 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-10-01 01:10:26,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-10-01 01:10:26,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-10-01 01:10:26,727 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:26,727 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 109 states. [2018-10-01 01:10:27,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:27,697 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-10-01 01:10:27,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-01 01:10:27,698 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 109 [2018-10-01 01:10:27,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:27,698 INFO L225 Difference]: With dead ends: 113 [2018-10-01 01:10:27,698 INFO L226 Difference]: Without dead ends: 111 [2018-10-01 01:10:27,699 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:10:27,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-01 01:10:27,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-01 01:10:27,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-01 01:10:27,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-10-01 01:10:27,701 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 109 [2018-10-01 01:10:27,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:27,701 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-10-01 01:10:27,701 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-10-01 01:10:27,701 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-10-01 01:10:27,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-01 01:10:27,702 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:27,702 INFO L375 BasicCegarLoop]: trace histogram [107, 1, 1, 1] [2018-10-01 01:10:27,702 INFO L423 AbstractCegarLoop]: === Iteration 108 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:27,702 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:27,702 INFO L82 PathProgramCache]: Analyzing trace with hash 179553222, now seen corresponding path program 107 times [2018-10-01 01:10:27,702 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:27,702 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:27,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:27,703 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:27,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:27,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:28,312 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:28,312 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:28,313 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:28,329 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:10:28,448 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2018-10-01 01:10:28,448 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:28,453 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:28,642 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:28,663 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:28,663 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-10-01 01:10:28,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-10-01 01:10:28,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-10-01 01:10:28,664 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:28,665 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 110 states. [2018-10-01 01:10:29,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:29,417 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2018-10-01 01:10:29,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-10-01 01:10:29,418 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 110 [2018-10-01 01:10:29,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:29,418 INFO L225 Difference]: With dead ends: 114 [2018-10-01 01:10:29,418 INFO L226 Difference]: Without dead ends: 112 [2018-10-01 01:10:29,419 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:10:29,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-10-01 01:10:29,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-10-01 01:10:29,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-10-01 01:10:29,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2018-10-01 01:10:29,421 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 110 [2018-10-01 01:10:29,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:29,421 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2018-10-01 01:10:29,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-10-01 01:10:29,421 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2018-10-01 01:10:29,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-01 01:10:29,421 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:29,421 INFO L375 BasicCegarLoop]: trace histogram [108, 1, 1, 1] [2018-10-01 01:10:29,422 INFO L423 AbstractCegarLoop]: === Iteration 109 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:29,422 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:29,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1271178720, now seen corresponding path program 108 times [2018-10-01 01:10:29,422 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:29,422 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:29,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:29,423 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:29,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:29,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:30,147 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:30,148 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:30,148 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:30,155 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:10:30,260 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-10-01 01:10:30,260 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:30,264 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:30,458 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:30,478 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:30,479 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2018-10-01 01:10:30,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-10-01 01:10:30,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-10-01 01:10:30,480 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:30,481 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand 111 states. [2018-10-01 01:10:31,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:31,328 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-10-01 01:10:31,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-10-01 01:10:31,329 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 111 [2018-10-01 01:10:31,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:31,329 INFO L225 Difference]: With dead ends: 115 [2018-10-01 01:10:31,329 INFO L226 Difference]: Without dead ends: 113 [2018-10-01 01:10:31,329 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:10:31,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-01 01:10:31,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-10-01 01:10:31,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-01 01:10:31,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-10-01 01:10:31,332 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 111 [2018-10-01 01:10:31,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:31,333 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-10-01 01:10:31,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-10-01 01:10:31,333 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-10-01 01:10:31,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-01 01:10:31,333 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:31,334 INFO L375 BasicCegarLoop]: trace histogram [109, 1, 1, 1] [2018-10-01 01:10:31,334 INFO L423 AbstractCegarLoop]: === Iteration 110 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:31,334 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:31,334 INFO L82 PathProgramCache]: Analyzing trace with hash 751830790, now seen corresponding path program 109 times [2018-10-01 01:10:31,334 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:31,334 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:31,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:31,335 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:31,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:32,004 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:32,004 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:32,004 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:32,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:32,076 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:32,414 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:32,434 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:32,434 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2018-10-01 01:10:32,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-10-01 01:10:32,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-10-01 01:10:32,436 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:32,436 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 112 states. [2018-10-01 01:10:33,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:33,101 INFO L93 Difference]: Finished difference Result 116 states and 116 transitions. [2018-10-01 01:10:33,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-10-01 01:10:33,101 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 112 [2018-10-01 01:10:33,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:33,102 INFO L225 Difference]: With dead ends: 116 [2018-10-01 01:10:33,102 INFO L226 Difference]: Without dead ends: 114 [2018-10-01 01:10:33,102 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:10:33,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-10-01 01:10:33,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-10-01 01:10:33,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-10-01 01:10:33,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2018-10-01 01:10:33,105 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 112 [2018-10-01 01:10:33,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:33,105 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2018-10-01 01:10:33,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-10-01 01:10:33,105 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2018-10-01 01:10:33,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-01 01:10:33,106 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:33,106 INFO L375 BasicCegarLoop]: trace histogram [110, 1, 1, 1] [2018-10-01 01:10:33,106 INFO L423 AbstractCegarLoop]: === Iteration 111 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:33,106 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:33,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1831914144, now seen corresponding path program 110 times [2018-10-01 01:10:33,107 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:33,107 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:33,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:33,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:33,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:33,779 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:33,779 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:33,779 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:33,787 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:10:33,849 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:10:33,849 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:33,853 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:34,050 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:34,070 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:34,070 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 112 [2018-10-01 01:10:34,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-10-01 01:10:34,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-10-01 01:10:34,072 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:34,072 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand 113 states. [2018-10-01 01:10:34,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:34,870 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-10-01 01:10:34,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-10-01 01:10:34,870 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 113 [2018-10-01 01:10:34,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:34,871 INFO L225 Difference]: With dead ends: 117 [2018-10-01 01:10:34,871 INFO L226 Difference]: Without dead ends: 115 [2018-10-01 01:10:34,871 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:10:34,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-10-01 01:10:34,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-10-01 01:10:34,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-01 01:10:34,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-10-01 01:10:34,874 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 113 [2018-10-01 01:10:34,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:34,874 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-10-01 01:10:34,874 INFO L481 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-10-01 01:10:34,874 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-10-01 01:10:34,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-01 01:10:34,875 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:34,875 INFO L375 BasicCegarLoop]: trace histogram [111, 1, 1, 1] [2018-10-01 01:10:34,875 INFO L423 AbstractCegarLoop]: === Iteration 112 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:34,875 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:34,875 INFO L82 PathProgramCache]: Analyzing trace with hash 954759750, now seen corresponding path program 111 times [2018-10-01 01:10:34,875 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:34,876 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:34,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:34,876 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:34,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:34,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:35,667 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:35,668 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:35,668 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:35,675 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:10:35,828 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 57 check-sat command(s) [2018-10-01 01:10:35,829 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:35,832 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:36,030 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:36,052 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:36,052 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2018-10-01 01:10:36,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-10-01 01:10:36,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-10-01 01:10:36,053 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:36,054 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 114 states. [2018-10-01 01:10:36,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:36,608 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2018-10-01 01:10:36,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-10-01 01:10:36,608 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 114 [2018-10-01 01:10:36,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:36,608 INFO L225 Difference]: With dead ends: 118 [2018-10-01 01:10:36,609 INFO L226 Difference]: Without dead ends: 116 [2018-10-01 01:10:36,609 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:10:36,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-10-01 01:10:36,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2018-10-01 01:10:36,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-10-01 01:10:36,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2018-10-01 01:10:36,611 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 114 [2018-10-01 01:10:36,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:36,612 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2018-10-01 01:10:36,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-10-01 01:10:36,612 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2018-10-01 01:10:36,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-01 01:10:36,612 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:36,612 INFO L375 BasicCegarLoop]: trace histogram [112, 1, 1, 1] [2018-10-01 01:10:36,613 INFO L423 AbstractCegarLoop]: === Iteration 113 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:36,613 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:36,613 INFO L82 PathProgramCache]: Analyzing trace with hash -467222688, now seen corresponding path program 112 times [2018-10-01 01:10:36,613 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:36,613 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:36,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:36,614 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:36,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:36,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:37,503 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:37,503 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:37,503 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:37,511 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:10:37,583 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:10:37,583 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:37,587 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:37,836 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:37,856 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:37,856 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 114 [2018-10-01 01:10:37,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-10-01 01:10:37,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-10-01 01:10:37,857 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:37,858 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 115 states. [2018-10-01 01:10:38,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:38,746 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-10-01 01:10:38,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-10-01 01:10:38,746 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 115 [2018-10-01 01:10:38,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:38,746 INFO L225 Difference]: With dead ends: 119 [2018-10-01 01:10:38,747 INFO L226 Difference]: Without dead ends: 117 [2018-10-01 01:10:38,747 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:10:38,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-10-01 01:10:38,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-10-01 01:10:38,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-10-01 01:10:38,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-10-01 01:10:38,749 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 115 [2018-10-01 01:10:38,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:38,749 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-10-01 01:10:38,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-10-01 01:10:38,750 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-10-01 01:10:38,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-01 01:10:38,750 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:38,750 INFO L375 BasicCegarLoop]: trace histogram [113, 1, 1, 1] [2018-10-01 01:10:38,750 INFO L423 AbstractCegarLoop]: === Iteration 114 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:38,751 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:38,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1599005306, now seen corresponding path program 113 times [2018-10-01 01:10:38,751 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:38,751 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:38,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:38,751 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:38,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:38,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:39,469 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:39,469 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:39,469 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:39,476 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:10:39,594 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2018-10-01 01:10:39,594 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:39,598 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:39,958 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:39,979 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:39,979 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 115 [2018-10-01 01:10:39,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-10-01 01:10:39,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-10-01 01:10:39,981 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:39,981 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 116 states. [2018-10-01 01:10:40,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:40,664 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2018-10-01 01:10:40,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-10-01 01:10:40,665 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 116 [2018-10-01 01:10:40,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:40,665 INFO L225 Difference]: With dead ends: 120 [2018-10-01 01:10:40,665 INFO L226 Difference]: Without dead ends: 118 [2018-10-01 01:10:40,666 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:10:40,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-10-01 01:10:40,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-10-01 01:10:40,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-10-01 01:10:40,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2018-10-01 01:10:40,668 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 116 [2018-10-01 01:10:40,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:40,669 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2018-10-01 01:10:40,669 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-10-01 01:10:40,669 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2018-10-01 01:10:40,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-01 01:10:40,669 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:40,669 INFO L375 BasicCegarLoop]: trace histogram [114, 1, 1, 1] [2018-10-01 01:10:40,669 INFO L423 AbstractCegarLoop]: === Iteration 115 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:40,670 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:40,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1970439200, now seen corresponding path program 114 times [2018-10-01 01:10:40,670 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:40,670 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:40,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:40,670 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:40,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:40,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:41,390 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:41,391 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:41,391 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:41,398 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:10:41,520 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) [2018-10-01 01:10:41,521 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:41,526 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:41,760 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:41,781 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:41,782 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116] total 116 [2018-10-01 01:10:41,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-10-01 01:10:41,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-10-01 01:10:41,783 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:41,783 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand 117 states. [2018-10-01 01:10:42,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:42,667 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-10-01 01:10:42,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-10-01 01:10:42,668 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 117 [2018-10-01 01:10:42,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:42,669 INFO L225 Difference]: With dead ends: 121 [2018-10-01 01:10:42,669 INFO L226 Difference]: Without dead ends: 119 [2018-10-01 01:10:42,669 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:10:42,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-10-01 01:10:42,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-10-01 01:10:42,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-01 01:10:42,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-10-01 01:10:42,671 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 117 [2018-10-01 01:10:42,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:42,671 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-10-01 01:10:42,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-10-01 01:10:42,671 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-10-01 01:10:42,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-01 01:10:42,672 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:42,672 INFO L375 BasicCegarLoop]: trace histogram [115, 1, 1, 1] [2018-10-01 01:10:42,672 INFO L423 AbstractCegarLoop]: === Iteration 116 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:42,672 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:42,672 INFO L82 PathProgramCache]: Analyzing trace with hash 954069190, now seen corresponding path program 115 times [2018-10-01 01:10:42,672 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:42,673 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:42,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:42,673 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:42,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:43,387 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:43,388 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:43,388 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:43,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:43,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:43,466 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:43,695 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:43,715 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:43,716 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117] total 117 [2018-10-01 01:10:43,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-10-01 01:10:43,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-10-01 01:10:43,717 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:43,717 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 118 states. [2018-10-01 01:10:44,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:44,319 INFO L93 Difference]: Finished difference Result 122 states and 122 transitions. [2018-10-01 01:10:44,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-10-01 01:10:44,320 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 118 [2018-10-01 01:10:44,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:44,320 INFO L225 Difference]: With dead ends: 122 [2018-10-01 01:10:44,320 INFO L226 Difference]: Without dead ends: 120 [2018-10-01 01:10:44,321 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:10:44,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-10-01 01:10:44,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2018-10-01 01:10:44,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-10-01 01:10:44,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2018-10-01 01:10:44,323 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 118 [2018-10-01 01:10:44,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:44,324 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2018-10-01 01:10:44,324 INFO L481 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-10-01 01:10:44,324 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2018-10-01 01:10:44,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-01 01:10:44,324 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:44,324 INFO L375 BasicCegarLoop]: trace histogram [116, 1, 1, 1] [2018-10-01 01:10:44,324 INFO L423 AbstractCegarLoop]: === Iteration 117 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:44,325 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:44,325 INFO L82 PathProgramCache]: Analyzing trace with hash -488630048, now seen corresponding path program 116 times [2018-10-01 01:10:44,325 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:44,325 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:44,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:44,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:44,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:44,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:45,034 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 0 proven. 6786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:45,035 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:45,035 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:45,043 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:10:45,121 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:10:45,121 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:45,125 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:45,370 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 0 proven. 6786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:45,390 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:45,390 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118] total 118 [2018-10-01 01:10:45,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-10-01 01:10:45,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-10-01 01:10:45,392 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:45,392 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand 119 states. [2018-10-01 01:10:46,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:46,129 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-10-01 01:10:46,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-10-01 01:10:46,129 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 119 [2018-10-01 01:10:46,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:46,130 INFO L225 Difference]: With dead ends: 123 [2018-10-01 01:10:46,130 INFO L226 Difference]: Without dead ends: 121 [2018-10-01 01:10:46,130 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:10:46,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-10-01 01:10:46,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-10-01 01:10:46,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-10-01 01:10:46,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-10-01 01:10:46,132 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 119 [2018-10-01 01:10:46,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:46,132 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-10-01 01:10:46,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-10-01 01:10:46,132 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-10-01 01:10:46,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-01 01:10:46,132 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:46,133 INFO L375 BasicCegarLoop]: trace histogram [117, 1, 1, 1] [2018-10-01 01:10:46,133 INFO L423 AbstractCegarLoop]: === Iteration 118 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:46,133 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:46,133 INFO L82 PathProgramCache]: Analyzing trace with hash 2032333830, now seen corresponding path program 117 times [2018-10-01 01:10:46,133 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:46,133 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:46,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:46,134 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:46,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:46,848 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:46,848 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:46,848 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:46,855 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:10:46,982 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 60 check-sat command(s) [2018-10-01 01:10:46,983 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:46,986 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:47,205 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:47,226 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:47,227 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119] total 119 [2018-10-01 01:10:47,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-10-01 01:10:47,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-10-01 01:10:47,228 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:47,229 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 120 states. [2018-10-01 01:10:48,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:48,183 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2018-10-01 01:10:48,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-10-01 01:10:48,183 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 120 [2018-10-01 01:10:48,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:48,184 INFO L225 Difference]: With dead ends: 124 [2018-10-01 01:10:48,184 INFO L226 Difference]: Without dead ends: 122 [2018-10-01 01:10:48,184 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:10:48,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-10-01 01:10:48,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2018-10-01 01:10:48,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-10-01 01:10:48,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2018-10-01 01:10:48,186 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 120 [2018-10-01 01:10:48,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:48,186 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2018-10-01 01:10:48,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-10-01 01:10:48,186 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2018-10-01 01:10:48,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-01 01:10:48,187 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:48,187 INFO L375 BasicCegarLoop]: trace histogram [118, 1, 1, 1] [2018-10-01 01:10:48,187 INFO L423 AbstractCegarLoop]: === Iteration 119 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:48,187 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:48,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1422164576, now seen corresponding path program 118 times [2018-10-01 01:10:48,187 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:48,187 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:48,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:48,188 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:48,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:48,919 INFO L134 CoverageAnalysis]: Checked inductivity of 7021 backedges. 0 proven. 7021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:48,919 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:48,919 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:48,927 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:10:49,009 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:10:49,009 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:49,034 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:49,250 INFO L134 CoverageAnalysis]: Checked inductivity of 7021 backedges. 0 proven. 7021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:49,271 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:49,272 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 120] total 120 [2018-10-01 01:10:49,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-10-01 01:10:49,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-10-01 01:10:49,273 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:49,273 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 121 states. [2018-10-01 01:10:49,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:49,921 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-10-01 01:10:49,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-10-01 01:10:49,921 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 121 [2018-10-01 01:10:49,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:49,922 INFO L225 Difference]: With dead ends: 125 [2018-10-01 01:10:49,922 INFO L226 Difference]: Without dead ends: 123 [2018-10-01 01:10:49,922 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:10:49,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-10-01 01:10:49,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-10-01 01:10:49,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-10-01 01:10:49,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-10-01 01:10:49,925 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 121 [2018-10-01 01:10:49,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:49,925 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-10-01 01:10:49,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-10-01 01:10:49,926 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-10-01 01:10:49,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-01 01:10:49,926 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:49,927 INFO L375 BasicCegarLoop]: trace histogram [119, 1, 1, 1] [2018-10-01 01:10:49,927 INFO L423 AbstractCegarLoop]: === Iteration 120 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:49,927 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:49,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1137432762, now seen corresponding path program 119 times [2018-10-01 01:10:49,927 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:49,927 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:49,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:49,928 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:49,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:49,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:50,680 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:50,680 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:50,680 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:50,687 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:10:50,818 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2018-10-01 01:10:50,818 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:50,822 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:51,037 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:51,057 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:51,057 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 121] total 121 [2018-10-01 01:10:51,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-10-01 01:10:51,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-10-01 01:10:51,059 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:51,059 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 122 states. [2018-10-01 01:10:51,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:51,887 INFO L93 Difference]: Finished difference Result 126 states and 126 transitions. [2018-10-01 01:10:51,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-10-01 01:10:51,888 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 122 [2018-10-01 01:10:51,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:51,888 INFO L225 Difference]: With dead ends: 126 [2018-10-01 01:10:51,888 INFO L226 Difference]: Without dead ends: 124 [2018-10-01 01:10:51,888 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:10:51,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-10-01 01:10:51,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2018-10-01 01:10:51,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-10-01 01:10:51,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 124 transitions. [2018-10-01 01:10:51,894 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 124 transitions. Word has length 122 [2018-10-01 01:10:51,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:51,894 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 124 transitions. [2018-10-01 01:10:51,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-10-01 01:10:51,894 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 124 transitions. [2018-10-01 01:10:51,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-01 01:10:51,895 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:51,895 INFO L375 BasicCegarLoop]: trace histogram [120, 1, 1, 1] [2018-10-01 01:10:51,895 INFO L423 AbstractCegarLoop]: === Iteration 121 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:51,896 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:51,896 INFO L82 PathProgramCache]: Analyzing trace with hash -900681120, now seen corresponding path program 120 times [2018-10-01 01:10:51,896 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:51,896 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:51,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:51,897 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:51,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:51,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:52,934 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 0 proven. 7260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:52,934 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:52,934 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:52,941 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:10:53,064 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-10-01 01:10:53,065 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:53,069 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:53,291 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 0 proven. 7260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:53,311 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:53,311 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 122] total 122 [2018-10-01 01:10:53,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-10-01 01:10:53,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-10-01 01:10:53,313 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:53,313 INFO L87 Difference]: Start difference. First operand 124 states and 124 transitions. Second operand 123 states. [2018-10-01 01:10:54,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:54,223 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-10-01 01:10:54,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-10-01 01:10:54,223 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 123 [2018-10-01 01:10:54,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:54,223 INFO L225 Difference]: With dead ends: 127 [2018-10-01 01:10:54,223 INFO L226 Difference]: Without dead ends: 125 [2018-10-01 01:10:54,224 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:10:54,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-10-01 01:10:54,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-10-01 01:10:54,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-10-01 01:10:54,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-10-01 01:10:54,226 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 123 [2018-10-01 01:10:54,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:54,226 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-10-01 01:10:54,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-10-01 01:10:54,226 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-10-01 01:10:54,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-01 01:10:54,226 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:54,227 INFO L375 BasicCegarLoop]: trace histogram [121, 1, 1, 1] [2018-10-01 01:10:54,227 INFO L423 AbstractCegarLoop]: === Iteration 122 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:54,227 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:54,227 INFO L82 PathProgramCache]: Analyzing trace with hash 2143652486, now seen corresponding path program 121 times [2018-10-01 01:10:54,227 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:54,227 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:54,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:54,228 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:54,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:54,995 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:54,995 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:54,995 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:55,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:55,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:55,077 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:55,319 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:55,340 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:55,340 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 123] total 123 [2018-10-01 01:10:55,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-10-01 01:10:55,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-10-01 01:10:55,342 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:55,342 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 124 states. [2018-10-01 01:10:56,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:56,137 INFO L93 Difference]: Finished difference Result 128 states and 128 transitions. [2018-10-01 01:10:56,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-10-01 01:10:56,137 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 124 [2018-10-01 01:10:56,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:56,138 INFO L225 Difference]: With dead ends: 128 [2018-10-01 01:10:56,138 INFO L226 Difference]: Without dead ends: 126 [2018-10-01 01:10:56,138 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:10:56,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-10-01 01:10:56,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-10-01 01:10:56,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-10-01 01:10:56,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2018-10-01 01:10:56,140 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 124 [2018-10-01 01:10:56,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:56,140 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2018-10-01 01:10:56,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-10-01 01:10:56,140 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2018-10-01 01:10:56,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-01 01:10:56,141 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:56,141 INFO L375 BasicCegarLoop]: trace histogram [122, 1, 1, 1] [2018-10-01 01:10:56,141 INFO L423 AbstractCegarLoop]: === Iteration 123 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:56,141 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:56,141 INFO L82 PathProgramCache]: Analyzing trace with hash 2028713760, now seen corresponding path program 122 times [2018-10-01 01:10:56,141 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:56,141 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:56,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:56,142 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:56,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:56,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:56,901 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 0 proven. 7503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:56,901 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:56,902 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:56,911 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:10:56,984 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:10:56,984 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:56,988 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:57,224 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 0 proven. 7503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:57,245 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:57,245 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 124] total 124 [2018-10-01 01:10:57,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-10-01 01:10:57,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-10-01 01:10:57,247 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:57,247 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 125 states. [2018-10-01 01:10:58,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:58,054 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-10-01 01:10:58,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-10-01 01:10:58,054 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 125 [2018-10-01 01:10:58,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:58,054 INFO L225 Difference]: With dead ends: 129 [2018-10-01 01:10:58,055 INFO L226 Difference]: Without dead ends: 127 [2018-10-01 01:10:58,055 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:10:58,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-10-01 01:10:58,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-10-01 01:10:58,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-10-01 01:10:58,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-10-01 01:10:58,057 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 125 [2018-10-01 01:10:58,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:58,057 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-10-01 01:10:58,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-10-01 01:10:58,058 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-10-01 01:10:58,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-01 01:10:58,058 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:58,058 INFO L375 BasicCegarLoop]: trace histogram [123, 1, 1, 1] [2018-10-01 01:10:58,058 INFO L423 AbstractCegarLoop]: === Iteration 124 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:58,058 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:58,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1534386746, now seen corresponding path program 123 times [2018-10-01 01:10:58,059 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:58,059 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:58,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:58,059 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:58,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:58,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:58,803 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:58,803 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:58,803 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:58,811 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:10:58,955 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2018-10-01 01:10:58,956 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:58,960 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:59,180 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:59,202 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:59,202 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125, 125] total 125 [2018-10-01 01:10:59,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-10-01 01:10:59,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-10-01 01:10:59,204 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:59,204 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 126 states. [2018-10-01 01:10:59,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:59,930 INFO L93 Difference]: Finished difference Result 130 states and 130 transitions. [2018-10-01 01:10:59,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-10-01 01:10:59,930 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 126 [2018-10-01 01:10:59,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:59,931 INFO L225 Difference]: With dead ends: 130 [2018-10-01 01:10:59,931 INFO L226 Difference]: Without dead ends: 128 [2018-10-01 01:10:59,931 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:10:59,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-10-01 01:10:59,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2018-10-01 01:10:59,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-10-01 01:10:59,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 128 transitions. [2018-10-01 01:10:59,933 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 128 transitions. Word has length 126 [2018-10-01 01:10:59,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:59,933 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 128 transitions. [2018-10-01 01:10:59,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-10-01 01:10:59,933 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 128 transitions. [2018-10-01 01:10:59,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-01 01:10:59,933 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:59,934 INFO L375 BasicCegarLoop]: trace histogram [124, 1, 1, 1] [2018-10-01 01:10:59,934 INFO L423 AbstractCegarLoop]: === Iteration 125 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:59,934 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:59,934 INFO L82 PathProgramCache]: Analyzing trace with hash -321352736, now seen corresponding path program 124 times [2018-10-01 01:10:59,934 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:59,934 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:59,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:59,935 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:59,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:59,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:00,693 INFO L134 CoverageAnalysis]: Checked inductivity of 7750 backedges. 0 proven. 7750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:00,693 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:00,693 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:00,701 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:11:00,787 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:11:00,787 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:00,791 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:01,017 INFO L134 CoverageAnalysis]: Checked inductivity of 7750 backedges. 0 proven. 7750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:01,038 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:01,038 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126, 126] total 126 [2018-10-01 01:11:01,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-10-01 01:11:01,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-10-01 01:11:01,040 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:01,040 INFO L87 Difference]: Start difference. First operand 128 states and 128 transitions. Second operand 127 states. [2018-10-01 01:11:02,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:02,111 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-10-01 01:11:02,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-10-01 01:11:02,111 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 127 [2018-10-01 01:11:02,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:02,112 INFO L225 Difference]: With dead ends: 131 [2018-10-01 01:11:02,112 INFO L226 Difference]: Without dead ends: 129 [2018-10-01 01:11:02,112 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:11:02,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-10-01 01:11:02,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-10-01 01:11:02,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-10-01 01:11:02,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-10-01 01:11:02,115 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 127 [2018-10-01 01:11:02,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:02,115 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-10-01 01:11:02,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-10-01 01:11:02,116 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-10-01 01:11:02,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-01 01:11:02,116 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:02,116 INFO L375 BasicCegarLoop]: trace histogram [125, 1, 1, 1] [2018-10-01 01:11:02,116 INFO L423 AbstractCegarLoop]: === Iteration 126 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:02,116 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:02,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1372004090, now seen corresponding path program 125 times [2018-10-01 01:11:02,116 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:02,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:02,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:02,117 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:02,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:02,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:03,131 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:03,132 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:03,132 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:03,139 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:11:03,279 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 64 check-sat command(s) [2018-10-01 01:11:03,280 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:03,285 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:03,516 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:03,536 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:03,536 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127] total 127 [2018-10-01 01:11:03,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-10-01 01:11:03,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-10-01 01:11:03,538 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:03,538 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 128 states. [2018-10-01 01:11:04,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:04,499 INFO L93 Difference]: Finished difference Result 132 states and 132 transitions. [2018-10-01 01:11:04,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-10-01 01:11:04,500 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 128 [2018-10-01 01:11:04,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:04,501 INFO L225 Difference]: With dead ends: 132 [2018-10-01 01:11:04,501 INFO L226 Difference]: Without dead ends: 130 [2018-10-01 01:11:04,501 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:11:04,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-10-01 01:11:04,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-10-01 01:11:04,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-10-01 01:11:04,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 130 transitions. [2018-10-01 01:11:04,504 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 130 transitions. Word has length 128 [2018-10-01 01:11:04,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:04,505 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 130 transitions. [2018-10-01 01:11:04,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-10-01 01:11:04,505 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 130 transitions. [2018-10-01 01:11:04,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-01 01:11:04,505 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:04,505 INFO L375 BasicCegarLoop]: trace histogram [126, 1, 1, 1] [2018-10-01 01:11:04,506 INFO L423 AbstractCegarLoop]: === Iteration 127 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:04,506 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:04,506 INFO L82 PathProgramCache]: Analyzing trace with hash 417542304, now seen corresponding path program 126 times [2018-10-01 01:11:04,506 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:04,506 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:04,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:04,507 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:04,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:05,332 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 0 proven. 8001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:05,332 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:05,332 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:05,339 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:11:05,478 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 64 check-sat command(s) [2018-10-01 01:11:05,478 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:05,482 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:05,713 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 0 proven. 8001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:05,734 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:05,734 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128] total 128 [2018-10-01 01:11:05,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-10-01 01:11:05,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-10-01 01:11:05,736 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:05,736 INFO L87 Difference]: Start difference. First operand 130 states and 130 transitions. Second operand 129 states. [2018-10-01 01:11:06,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:06,766 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-10-01 01:11:06,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-10-01 01:11:06,766 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 129 [2018-10-01 01:11:06,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:06,767 INFO L225 Difference]: With dead ends: 133 [2018-10-01 01:11:06,767 INFO L226 Difference]: Without dead ends: 131 [2018-10-01 01:11:06,767 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:11:06,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-01 01:11:06,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-10-01 01:11:06,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-10-01 01:11:06,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-10-01 01:11:06,769 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 129 [2018-10-01 01:11:06,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:06,769 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-10-01 01:11:06,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-10-01 01:11:06,769 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-10-01 01:11:06,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-01 01:11:06,770 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:06,770 INFO L375 BasicCegarLoop]: trace histogram [127, 1, 1, 1] [2018-10-01 01:11:06,770 INFO L423 AbstractCegarLoop]: === Iteration 128 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:06,770 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:06,771 INFO L82 PathProgramCache]: Analyzing trace with hash 58905670, now seen corresponding path program 127 times [2018-10-01 01:11:06,771 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:06,771 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:06,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:06,771 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:06,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:07,583 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:07,583 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:07,583 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:07,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:11:07,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:07,671 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:08,054 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:08,074 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:08,074 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129] total 129 [2018-10-01 01:11:08,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-10-01 01:11:08,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-10-01 01:11:08,076 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:08,076 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 130 states. [2018-10-01 01:11:09,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:09,159 INFO L93 Difference]: Finished difference Result 134 states and 134 transitions. [2018-10-01 01:11:09,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-10-01 01:11:09,159 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 130 [2018-10-01 01:11:09,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:09,160 INFO L225 Difference]: With dead ends: 134 [2018-10-01 01:11:09,160 INFO L226 Difference]: Without dead ends: 132 [2018-10-01 01:11:09,160 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:11:09,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-10-01 01:11:09,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2018-10-01 01:11:09,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-10-01 01:11:09,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-10-01 01:11:09,163 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 130 [2018-10-01 01:11:09,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:09,164 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-10-01 01:11:09,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-10-01 01:11:09,164 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-10-01 01:11:09,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-01 01:11:09,164 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:09,165 INFO L375 BasicCegarLoop]: trace histogram [128, 1, 1, 1] [2018-10-01 01:11:09,165 INFO L423 AbstractCegarLoop]: === Iteration 129 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:09,165 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:09,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1826071904, now seen corresponding path program 128 times [2018-10-01 01:11:09,165 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:09,165 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:09,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:09,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:11:09,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:09,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:10,005 INFO L134 CoverageAnalysis]: Checked inductivity of 8256 backedges. 0 proven. 8256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:10,006 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:10,006 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:10,019 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:11:10,095 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:11:10,095 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:10,099 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:10,329 INFO L134 CoverageAnalysis]: Checked inductivity of 8256 backedges. 0 proven. 8256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:10,350 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:10,350 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 130] total 130 [2018-10-01 01:11:10,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-10-01 01:11:10,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-10-01 01:11:10,352 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:10,352 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 131 states. [2018-10-01 01:11:11,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:11,185 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-10-01 01:11:11,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-10-01 01:11:11,185 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 131 [2018-10-01 01:11:11,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:11,186 INFO L225 Difference]: With dead ends: 135 [2018-10-01 01:11:11,186 INFO L226 Difference]: Without dead ends: 133 [2018-10-01 01:11:11,187 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:11:11,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-10-01 01:11:11,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-10-01 01:11:11,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-01 01:11:11,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-10-01 01:11:11,190 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 131 [2018-10-01 01:11:11,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:11,191 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-10-01 01:11:11,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-10-01 01:11:11,191 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-10-01 01:11:11,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-01 01:11:11,191 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:11,192 INFO L375 BasicCegarLoop]: trace histogram [129, 1, 1, 1] [2018-10-01 01:11:11,192 INFO L423 AbstractCegarLoop]: === Iteration 130 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:11,192 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:11,192 INFO L82 PathProgramCache]: Analyzing trace with hash 773650310, now seen corresponding path program 129 times [2018-10-01 01:11:11,192 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:11,192 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:11,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:11,193 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:11,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:11,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:12,029 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:12,029 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:12,029 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:12,037 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:11:12,187 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 66 check-sat command(s) [2018-10-01 01:11:12,188 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:12,192 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:12,426 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:12,449 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:12,449 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131, 131] total 131 [2018-10-01 01:11:12,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-10-01 01:11:12,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-10-01 01:11:12,451 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:12,451 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 132 states. [2018-10-01 01:11:13,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:13,271 INFO L93 Difference]: Finished difference Result 136 states and 136 transitions. [2018-10-01 01:11:13,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-10-01 01:11:13,272 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 132 [2018-10-01 01:11:13,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:13,272 INFO L225 Difference]: With dead ends: 136 [2018-10-01 01:11:13,272 INFO L226 Difference]: Without dead ends: 134 [2018-10-01 01:11:13,272 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:11:13,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-10-01 01:11:13,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2018-10-01 01:11:13,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-10-01 01:11:13,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2018-10-01 01:11:13,275 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 132 [2018-10-01 01:11:13,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:13,276 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2018-10-01 01:11:13,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-10-01 01:11:13,276 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2018-10-01 01:11:13,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-01 01:11:13,276 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:13,276 INFO L375 BasicCegarLoop]: trace histogram [130, 1, 1, 1] [2018-10-01 01:11:13,277 INFO L423 AbstractCegarLoop]: === Iteration 131 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:13,277 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:13,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1786648032, now seen corresponding path program 130 times [2018-10-01 01:11:13,277 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:13,277 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:13,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:13,278 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:13,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:14,141 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 0 proven. 8515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:14,141 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:14,141 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:14,150 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:11:14,239 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:11:14,239 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:14,244 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:14,483 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 0 proven. 8515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:14,503 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:14,504 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132, 132] total 132 [2018-10-01 01:11:14,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-10-01 01:11:14,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-10-01 01:11:14,506 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:14,506 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand 133 states. [2018-10-01 01:11:15,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:15,257 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-10-01 01:11:15,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-10-01 01:11:15,257 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 133 [2018-10-01 01:11:15,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:15,258 INFO L225 Difference]: With dead ends: 137 [2018-10-01 01:11:15,258 INFO L226 Difference]: Without dead ends: 135 [2018-10-01 01:11:15,258 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:11:15,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-10-01 01:11:15,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-10-01 01:11:15,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-01 01:11:15,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-10-01 01:11:15,261 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 133 [2018-10-01 01:11:15,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:15,261 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-10-01 01:11:15,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-10-01 01:11:15,261 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-10-01 01:11:15,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-01 01:11:15,262 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:15,262 INFO L375 BasicCegarLoop]: trace histogram [131, 1, 1, 1] [2018-10-01 01:11:15,263 INFO L423 AbstractCegarLoop]: === Iteration 132 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:15,263 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:15,263 INFO L82 PathProgramCache]: Analyzing trace with hash 448481990, now seen corresponding path program 131 times [2018-10-01 01:11:15,263 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:15,263 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:15,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:15,264 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:15,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:15,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:16,127 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:16,127 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:16,127 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:16,135 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:11:16,286 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 67 check-sat command(s) [2018-10-01 01:11:16,286 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:16,290 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:16,527 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:16,547 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:16,547 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133, 133] total 133 [2018-10-01 01:11:16,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-10-01 01:11:16,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-10-01 01:11:16,549 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:16,549 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 134 states. [2018-10-01 01:11:17,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:17,741 INFO L93 Difference]: Finished difference Result 138 states and 138 transitions. [2018-10-01 01:11:17,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-10-01 01:11:17,742 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 134 [2018-10-01 01:11:17,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:17,742 INFO L225 Difference]: With dead ends: 138 [2018-10-01 01:11:17,742 INFO L226 Difference]: Without dead ends: 136 [2018-10-01 01:11:17,743 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:11:17,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-10-01 01:11:17,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2018-10-01 01:11:17,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-10-01 01:11:17,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2018-10-01 01:11:17,745 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 134 [2018-10-01 01:11:17,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:17,745 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2018-10-01 01:11:17,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-10-01 01:11:17,745 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2018-10-01 01:11:17,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-10-01 01:11:17,745 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:17,745 INFO L375 BasicCegarLoop]: trace histogram [132, 1, 1, 1] [2018-10-01 01:11:17,746 INFO L423 AbstractCegarLoop]: === Iteration 133 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:17,746 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:17,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1018035936, now seen corresponding path program 132 times [2018-10-01 01:11:17,746 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:17,746 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:17,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:17,747 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:17,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:18,837 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 0 proven. 8778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:18,838 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:18,838 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:18,845 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:11:18,990 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-10-01 01:11:18,990 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:18,995 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:19,228 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 0 proven. 8778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:19,248 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:19,248 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134, 134] total 134 [2018-10-01 01:11:19,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-10-01 01:11:19,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-10-01 01:11:19,250 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:19,250 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand 135 states. [2018-10-01 01:11:20,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:20,302 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-10-01 01:11:20,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-10-01 01:11:20,302 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 135 [2018-10-01 01:11:20,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:20,303 INFO L225 Difference]: With dead ends: 139 [2018-10-01 01:11:20,303 INFO L226 Difference]: Without dead ends: 137 [2018-10-01 01:11:20,303 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:11:20,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-10-01 01:11:20,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-10-01 01:11:20,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-10-01 01:11:20,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-10-01 01:11:20,305 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 135 [2018-10-01 01:11:20,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:20,305 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-10-01 01:11:20,305 INFO L481 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-10-01 01:11:20,305 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-10-01 01:11:20,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-01 01:11:20,306 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:20,306 INFO L375 BasicCegarLoop]: trace histogram [133, 1, 1, 1] [2018-10-01 01:11:20,306 INFO L423 AbstractCegarLoop]: === Iteration 134 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:20,306 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:20,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1494339078, now seen corresponding path program 133 times [2018-10-01 01:11:20,306 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:20,306 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:20,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:20,307 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:20,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:20,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:21,136 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:21,136 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:21,136 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:21,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:11:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:21,222 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:21,488 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:21,508 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:21,508 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135, 135] total 135 [2018-10-01 01:11:21,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-10-01 01:11:21,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-10-01 01:11:21,510 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:21,510 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 136 states. [2018-10-01 01:11:22,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:22,665 INFO L93 Difference]: Finished difference Result 140 states and 140 transitions. [2018-10-01 01:11:22,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-10-01 01:11:22,665 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 136 [2018-10-01 01:11:22,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:22,666 INFO L225 Difference]: With dead ends: 140 [2018-10-01 01:11:22,666 INFO L226 Difference]: Without dead ends: 138 [2018-10-01 01:11:22,666 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:11:22,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-10-01 01:11:22,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2018-10-01 01:11:22,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-10-01 01:11:22,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 138 transitions. [2018-10-01 01:11:22,669 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 138 transitions. Word has length 136 [2018-10-01 01:11:22,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:22,669 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 138 transitions. [2018-10-01 01:11:22,669 INFO L481 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-10-01 01:11:22,669 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 138 transitions. [2018-10-01 01:11:22,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-01 01:11:22,670 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:22,670 INFO L375 BasicCegarLoop]: trace histogram [134, 1, 1, 1] [2018-10-01 01:11:22,670 INFO L423 AbstractCegarLoop]: === Iteration 135 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:22,670 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:22,670 INFO L82 PathProgramCache]: Analyzing trace with hash -920132704, now seen corresponding path program 134 times [2018-10-01 01:11:22,670 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:22,670 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:22,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:22,671 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:11:22,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:22,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:23,740 INFO L134 CoverageAnalysis]: Checked inductivity of 9045 backedges. 0 proven. 9045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:23,740 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:23,740 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:23,747 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:11:23,827 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:11:23,827 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:23,831 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:24,087 INFO L134 CoverageAnalysis]: Checked inductivity of 9045 backedges. 0 proven. 9045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:24,108 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:24,108 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136, 136] total 136 [2018-10-01 01:11:24,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-10-01 01:11:24,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-10-01 01:11:24,110 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:24,111 INFO L87 Difference]: Start difference. First operand 138 states and 138 transitions. Second operand 137 states. [2018-10-01 01:11:24,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:24,882 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-10-01 01:11:24,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-10-01 01:11:24,882 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 137 [2018-10-01 01:11:24,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:24,883 INFO L225 Difference]: With dead ends: 141 [2018-10-01 01:11:24,883 INFO L226 Difference]: Without dead ends: 139 [2018-10-01 01:11:24,883 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:11:24,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-01 01:11:24,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-10-01 01:11:24,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-01 01:11:24,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-10-01 01:11:24,886 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 137 [2018-10-01 01:11:24,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:24,886 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-10-01 01:11:24,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-10-01 01:11:24,887 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-10-01 01:11:24,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-01 01:11:24,887 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:24,887 INFO L375 BasicCegarLoop]: trace histogram [135, 1, 1, 1] [2018-10-01 01:11:24,887 INFO L423 AbstractCegarLoop]: === Iteration 136 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:24,888 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:24,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1540653382, now seen corresponding path program 135 times [2018-10-01 01:11:24,888 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:24,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:24,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:24,889 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:24,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:25,746 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:25,746 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:25,746 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:25,755 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:11:25,919 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 69 check-sat command(s) [2018-10-01 01:11:25,919 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:25,924 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:26,182 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:26,204 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:26,204 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137, 137] total 137 [2018-10-01 01:11:26,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-10-01 01:11:26,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-10-01 01:11:26,206 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:26,206 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 138 states. [2018-10-01 01:11:27,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:27,552 INFO L93 Difference]: Finished difference Result 142 states and 142 transitions. [2018-10-01 01:11:27,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-10-01 01:11:27,553 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 138 [2018-10-01 01:11:27,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:27,553 INFO L225 Difference]: With dead ends: 142 [2018-10-01 01:11:27,553 INFO L226 Difference]: Without dead ends: 140 [2018-10-01 01:11:27,553 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:11:27,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-10-01 01:11:27,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-10-01 01:11:27,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-10-01 01:11:27,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions. [2018-10-01 01:11:27,556 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 138 [2018-10-01 01:11:27,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:27,557 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions. [2018-10-01 01:11:27,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-10-01 01:11:27,557 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions. [2018-10-01 01:11:27,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-01 01:11:27,558 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:27,558 INFO L375 BasicCegarLoop]: trace histogram [136, 1, 1, 1] [2018-10-01 01:11:27,558 INFO L423 AbstractCegarLoop]: === Iteration 137 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:27,558 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:27,558 INFO L82 PathProgramCache]: Analyzing trace with hash 515610720, now seen corresponding path program 136 times [2018-10-01 01:11:27,558 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:27,558 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:27,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:27,559 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:27,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:27,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:28,584 INFO L134 CoverageAnalysis]: Checked inductivity of 9316 backedges. 0 proven. 9316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:28,584 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:28,585 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:28,592 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:11:28,685 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:11:28,686 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:28,690 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:28,954 INFO L134 CoverageAnalysis]: Checked inductivity of 9316 backedges. 0 proven. 9316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:28,974 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:28,974 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138, 138] total 138 [2018-10-01 01:11:28,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-10-01 01:11:28,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-10-01 01:11:28,976 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:28,976 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand 139 states. [2018-10-01 01:11:30,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:30,048 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-10-01 01:11:30,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-10-01 01:11:30,048 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 139 [2018-10-01 01:11:30,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:30,048 INFO L225 Difference]: With dead ends: 143 [2018-10-01 01:11:30,048 INFO L226 Difference]: Without dead ends: 141 [2018-10-01 01:11:30,049 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:11:30,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-10-01 01:11:30,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-10-01 01:11:30,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-10-01 01:11:30,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-10-01 01:11:30,051 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 139 [2018-10-01 01:11:30,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:30,051 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-10-01 01:11:30,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-10-01 01:11:30,051 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-10-01 01:11:30,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-01 01:11:30,052 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:30,052 INFO L375 BasicCegarLoop]: trace histogram [137, 1, 1, 1] [2018-10-01 01:11:30,052 INFO L423 AbstractCegarLoop]: === Iteration 138 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:30,052 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:30,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1195940730, now seen corresponding path program 137 times [2018-10-01 01:11:30,053 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:30,053 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:30,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:30,053 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:30,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:30,941 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:30,942 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:30,942 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:30,948 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:11:31,119 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 70 check-sat command(s) [2018-10-01 01:11:31,119 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:31,124 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:31,374 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:31,396 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:31,396 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139, 139] total 139 [2018-10-01 01:11:31,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-10-01 01:11:31,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-10-01 01:11:31,398 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:31,398 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 140 states. [2018-10-01 01:11:32,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:32,686 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2018-10-01 01:11:32,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-10-01 01:11:32,687 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 140 [2018-10-01 01:11:32,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:32,687 INFO L225 Difference]: With dead ends: 144 [2018-10-01 01:11:32,687 INFO L226 Difference]: Without dead ends: 142 [2018-10-01 01:11:32,688 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:11:32,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-10-01 01:11:32,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2018-10-01 01:11:32,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-10-01 01:11:32,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2018-10-01 01:11:32,690 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 140 [2018-10-01 01:11:32,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:32,690 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2018-10-01 01:11:32,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-10-01 01:11:32,690 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2018-10-01 01:11:32,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-01 01:11:32,690 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:32,691 INFO L375 BasicCegarLoop]: trace histogram [138, 1, 1, 1] [2018-10-01 01:11:32,691 INFO L423 AbstractCegarLoop]: === Iteration 139 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:32,691 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:32,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1580539168, now seen corresponding path program 138 times [2018-10-01 01:11:32,691 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:32,691 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:32,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:32,692 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:32,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:32,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:33,773 INFO L134 CoverageAnalysis]: Checked inductivity of 9591 backedges. 0 proven. 9591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:33,774 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:33,774 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:33,780 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:11:33,931 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 70 check-sat command(s) [2018-10-01 01:11:33,931 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:33,935 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:34,196 INFO L134 CoverageAnalysis]: Checked inductivity of 9591 backedges. 0 proven. 9591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:34,216 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:34,216 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140, 140] total 140 [2018-10-01 01:11:34,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-10-01 01:11:34,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-10-01 01:11:34,218 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:34,218 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand 141 states. [2018-10-01 01:11:35,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:35,544 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-10-01 01:11:35,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-10-01 01:11:35,545 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 141 [2018-10-01 01:11:35,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:35,545 INFO L225 Difference]: With dead ends: 145 [2018-10-01 01:11:35,545 INFO L226 Difference]: Without dead ends: 143 [2018-10-01 01:11:35,545 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:11:35,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-01 01:11:35,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-10-01 01:11:35,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-10-01 01:11:35,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-10-01 01:11:35,548 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 141 [2018-10-01 01:11:35,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:35,548 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-10-01 01:11:35,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-10-01 01:11:35,548 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-10-01 01:11:35,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-01 01:11:35,549 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:35,549 INFO L375 BasicCegarLoop]: trace histogram [139, 1, 1, 1] [2018-10-01 01:11:35,549 INFO L423 AbstractCegarLoop]: === Iteration 140 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:35,549 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:35,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1752070086, now seen corresponding path program 139 times [2018-10-01 01:11:35,549 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:35,549 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:35,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:35,550 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:35,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:36,473 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:36,474 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:36,474 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:36,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:11:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:36,565 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:36,821 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:36,841 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:36,841 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141, 141] total 141 [2018-10-01 01:11:36,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-10-01 01:11:36,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-10-01 01:11:36,843 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:36,843 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 142 states. [2018-10-01 01:11:38,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:38,047 INFO L93 Difference]: Finished difference Result 146 states and 146 transitions. [2018-10-01 01:11:38,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-10-01 01:11:38,048 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 142 [2018-10-01 01:11:38,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:38,048 INFO L225 Difference]: With dead ends: 146 [2018-10-01 01:11:38,049 INFO L226 Difference]: Without dead ends: 144 [2018-10-01 01:11:38,049 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:11:38,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-10-01 01:11:38,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2018-10-01 01:11:38,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-10-01 01:11:38,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2018-10-01 01:11:38,051 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 142 [2018-10-01 01:11:38,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:38,051 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2018-10-01 01:11:38,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-10-01 01:11:38,052 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2018-10-01 01:11:38,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-01 01:11:38,052 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:38,052 INFO L375 BasicCegarLoop]: trace histogram [140, 1, 1, 1] [2018-10-01 01:11:38,052 INFO L423 AbstractCegarLoop]: === Iteration 141 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:38,053 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:38,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1520406048, now seen corresponding path program 140 times [2018-10-01 01:11:38,053 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:38,053 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:38,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:38,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:11:38,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:39,153 INFO L134 CoverageAnalysis]: Checked inductivity of 9870 backedges. 0 proven. 9870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:39,153 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:39,153 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:39,160 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:11:39,238 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:11:39,239 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:39,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:39,501 INFO L134 CoverageAnalysis]: Checked inductivity of 9870 backedges. 0 proven. 9870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:39,522 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:39,522 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142, 142] total 142 [2018-10-01 01:11:39,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-10-01 01:11:39,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-10-01 01:11:39,524 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:39,524 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand 143 states. [2018-10-01 01:11:40,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:40,884 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-10-01 01:11:40,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-10-01 01:11:40,885 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 143 [2018-10-01 01:11:40,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:40,885 INFO L225 Difference]: With dead ends: 147 [2018-10-01 01:11:40,886 INFO L226 Difference]: Without dead ends: 145 [2018-10-01 01:11:40,886 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:11:40,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-10-01 01:11:40,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-10-01 01:11:40,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-10-01 01:11:40,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-10-01 01:11:40,888 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 143 [2018-10-01 01:11:40,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:40,888 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-10-01 01:11:40,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-10-01 01:11:40,888 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-10-01 01:11:40,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-01 01:11:40,889 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:40,889 INFO L375 BasicCegarLoop]: trace histogram [141, 1, 1, 1] [2018-10-01 01:11:40,889 INFO L423 AbstractCegarLoop]: === Iteration 142 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:40,889 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:40,889 INFO L82 PathProgramCache]: Analyzing trace with hash 112048902, now seen corresponding path program 141 times [2018-10-01 01:11:40,889 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:40,889 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:40,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:40,890 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:40,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:40,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:41,828 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:41,828 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:41,828 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:41,835 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:11:42,011 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 72 check-sat command(s) [2018-10-01 01:11:42,011 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:42,016 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:42,281 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:42,302 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:42,303 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143, 143] total 143 [2018-10-01 01:11:42,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-10-01 01:11:42,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-10-01 01:11:42,304 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:42,305 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 144 states. [2018-10-01 01:11:43,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:43,808 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2018-10-01 01:11:43,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-10-01 01:11:43,809 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 144 [2018-10-01 01:11:43,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:43,809 INFO L225 Difference]: With dead ends: 148 [2018-10-01 01:11:43,810 INFO L226 Difference]: Without dead ends: 146 [2018-10-01 01:11:43,810 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:11:43,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-10-01 01:11:43,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-10-01 01:11:43,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-10-01 01:11:43,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2018-10-01 01:11:43,813 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 144 [2018-10-01 01:11:43,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:43,813 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2018-10-01 01:11:43,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-10-01 01:11:43,813 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2018-10-01 01:11:43,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-01 01:11:43,814 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:43,814 INFO L375 BasicCegarLoop]: trace histogram [142, 1, 1, 1] [2018-10-01 01:11:43,814 INFO L423 AbstractCegarLoop]: === Iteration 143 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:43,814 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:43,814 INFO L82 PathProgramCache]: Analyzing trace with hash -821455200, now seen corresponding path program 142 times [2018-10-01 01:11:43,814 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:43,814 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:43,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:43,815 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:43,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:44,799 INFO L134 CoverageAnalysis]: Checked inductivity of 10153 backedges. 0 proven. 10153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:44,799 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:44,799 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:44,807 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:11:44,917 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:11:44,918 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:44,924 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:45,220 INFO L134 CoverageAnalysis]: Checked inductivity of 10153 backedges. 0 proven. 10153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:45,240 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:45,240 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144, 144] total 144 [2018-10-01 01:11:45,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-10-01 01:11:45,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-10-01 01:11:45,242 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:45,242 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 145 states. [2018-10-01 01:11:46,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:46,071 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-10-01 01:11:46,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-10-01 01:11:46,071 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 145 [2018-10-01 01:11:46,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:46,072 INFO L225 Difference]: With dead ends: 149 [2018-10-01 01:11:46,072 INFO L226 Difference]: Without dead ends: 147 [2018-10-01 01:11:46,072 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:11:46,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-10-01 01:11:46,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-10-01 01:11:46,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-10-01 01:11:46,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-10-01 01:11:46,074 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 145 [2018-10-01 01:11:46,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:46,075 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-10-01 01:11:46,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-10-01 01:11:46,075 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-10-01 01:11:46,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-01 01:11:46,075 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:46,075 INFO L375 BasicCegarLoop]: trace histogram [143, 1, 1, 1] [2018-10-01 01:11:46,076 INFO L423 AbstractCegarLoop]: === Iteration 144 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:46,076 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:46,076 INFO L82 PathProgramCache]: Analyzing trace with hash 304688710, now seen corresponding path program 143 times [2018-10-01 01:11:46,076 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:46,076 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:46,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:46,077 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:46,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:47,047 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:47,047 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:47,047 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:47,054 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:11:47,228 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 73 check-sat command(s) [2018-10-01 01:11:47,229 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:47,234 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:47,536 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:47,558 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:47,558 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145, 145] total 145 [2018-10-01 01:11:47,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-10-01 01:11:47,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-10-01 01:11:47,560 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:47,560 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 146 states. [2018-10-01 01:11:49,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:49,178 INFO L93 Difference]: Finished difference Result 150 states and 150 transitions. [2018-10-01 01:11:49,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-10-01 01:11:49,178 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 146 [2018-10-01 01:11:49,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:49,179 INFO L225 Difference]: With dead ends: 150 [2018-10-01 01:11:49,179 INFO L226 Difference]: Without dead ends: 148 [2018-10-01 01:11:49,179 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:11:49,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-10-01 01:11:49,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2018-10-01 01:11:49,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-10-01 01:11:49,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2018-10-01 01:11:49,181 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 146 [2018-10-01 01:11:49,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:49,181 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2018-10-01 01:11:49,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-10-01 01:11:49,181 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2018-10-01 01:11:49,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-01 01:11:49,182 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:49,182 INFO L375 BasicCegarLoop]: trace histogram [144, 1, 1, 1] [2018-10-01 01:11:49,182 INFO L423 AbstractCegarLoop]: === Iteration 145 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:49,182 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:49,182 INFO L82 PathProgramCache]: Analyzing trace with hash 855411552, now seen corresponding path program 144 times [2018-10-01 01:11:49,182 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:49,182 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:49,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:49,183 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:49,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:50,180 INFO L134 CoverageAnalysis]: Checked inductivity of 10440 backedges. 0 proven. 10440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:50,180 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:50,180 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:50,187 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:11:50,351 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-10-01 01:11:50,351 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:50,356 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:50,625 INFO L134 CoverageAnalysis]: Checked inductivity of 10440 backedges. 0 proven. 10440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:50,646 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:50,646 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146, 146] total 146 [2018-10-01 01:11:50,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 147 states [2018-10-01 01:11:50,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2018-10-01 01:11:50,648 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:50,648 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand 147 states. [2018-10-01 01:11:51,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:51,945 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-10-01 01:11:51,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-10-01 01:11:51,945 INFO L78 Accepts]: Start accepts. Automaton has 147 states. Word has length 147 [2018-10-01 01:11:51,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:51,945 INFO L225 Difference]: With dead ends: 151 [2018-10-01 01:11:51,946 INFO L226 Difference]: Without dead ends: 149 [2018-10-01 01:11:51,946 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:11:51,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-10-01 01:11:51,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-10-01 01:11:51,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-10-01 01:11:51,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-10-01 01:11:51,948 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 147 [2018-10-01 01:11:51,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:51,948 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-10-01 01:11:51,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has 147 states. [2018-10-01 01:11:51,948 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-10-01 01:11:51,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-01 01:11:51,949 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:51,949 INFO L375 BasicCegarLoop]: trace histogram [145, 1, 1, 1] [2018-10-01 01:11:51,949 INFO L423 AbstractCegarLoop]: === Iteration 146 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:51,949 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:51,949 INFO L82 PathProgramCache]: Analyzing trace with hash 747950470, now seen corresponding path program 145 times [2018-10-01 01:11:51,949 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:51,949 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:51,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:51,950 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:51,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:52,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:52,908 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:52,908 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:52,908 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:52,915 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:11:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:53,001 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:53,277 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:53,297 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:53,297 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147, 147] total 147 [2018-10-01 01:11:53,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-10-01 01:11:53,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-10-01 01:11:53,299 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:53,300 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 148 states. [2018-10-01 01:11:54,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:54,309 INFO L93 Difference]: Finished difference Result 152 states and 152 transitions. [2018-10-01 01:11:54,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-10-01 01:11:54,309 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 148 [2018-10-01 01:11:54,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:54,310 INFO L225 Difference]: With dead ends: 152 [2018-10-01 01:11:54,310 INFO L226 Difference]: Without dead ends: 150 [2018-10-01 01:11:54,310 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:11:54,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-10-01 01:11:54,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2018-10-01 01:11:54,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-10-01 01:11:54,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2018-10-01 01:11:54,312 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 148 [2018-10-01 01:11:54,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:54,312 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2018-10-01 01:11:54,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-10-01 01:11:54,313 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2018-10-01 01:11:54,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-01 01:11:54,313 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:54,313 INFO L375 BasicCegarLoop]: trace histogram [146, 1, 1, 1] [2018-10-01 01:11:54,313 INFO L423 AbstractCegarLoop]: === Iteration 147 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:54,313 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:54,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1711624224, now seen corresponding path program 146 times [2018-10-01 01:11:54,313 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:54,314 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:54,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:54,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:11:54,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:55,283 INFO L134 CoverageAnalysis]: Checked inductivity of 10731 backedges. 0 proven. 10731 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:55,284 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:55,284 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:55,293 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:11:55,378 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:11:55,378 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:55,382 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:55,655 INFO L134 CoverageAnalysis]: Checked inductivity of 10731 backedges. 0 proven. 10731 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:55,675 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:55,675 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148, 148] total 148 [2018-10-01 01:11:55,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-10-01 01:11:55,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-10-01 01:11:55,677 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:55,677 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand 149 states. [2018-10-01 01:11:56,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:56,994 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-10-01 01:11:56,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-10-01 01:11:56,995 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 149 [2018-10-01 01:11:56,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:56,995 INFO L225 Difference]: With dead ends: 153 [2018-10-01 01:11:56,995 INFO L226 Difference]: Without dead ends: 151 [2018-10-01 01:11:56,995 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:11:56,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-10-01 01:11:56,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-10-01 01:11:56,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-01 01:11:56,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-10-01 01:11:56,998 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 149 [2018-10-01 01:11:56,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:56,998 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-10-01 01:11:56,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 149 states. [2018-10-01 01:11:56,998 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-10-01 01:11:56,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-01 01:11:56,998 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:56,998 INFO L375 BasicCegarLoop]: trace histogram [147, 1, 1, 1] [2018-10-01 01:11:56,999 INFO L423 AbstractCegarLoop]: === Iteration 148 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:56,999 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:56,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1520739526, now seen corresponding path program 147 times [2018-10-01 01:11:56,999 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:56,999 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:56,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:56,999 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:56,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:57,988 INFO L134 CoverageAnalysis]: Checked inductivity of 10878 backedges. 0 proven. 10878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:57,988 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:57,988 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:57,996 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:11:58,184 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 75 check-sat command(s) [2018-10-01 01:11:58,184 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:58,189 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:58,455 INFO L134 CoverageAnalysis]: Checked inductivity of 10878 backedges. 0 proven. 10878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:58,476 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:58,476 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149, 149] total 149 [2018-10-01 01:11:58,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-10-01 01:11:58,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-10-01 01:11:58,478 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:58,479 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 150 states. [2018-10-01 01:11:59,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:59,909 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2018-10-01 01:11:59,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-10-01 01:11:59,910 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 150 [2018-10-01 01:11:59,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:59,910 INFO L225 Difference]: With dead ends: 154 [2018-10-01 01:11:59,910 INFO L226 Difference]: Without dead ends: 152 [2018-10-01 01:11:59,910 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:11:59,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-10-01 01:11:59,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2018-10-01 01:11:59,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-10-01 01:11:59,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 152 transitions. [2018-10-01 01:11:59,913 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 152 transitions. Word has length 150 [2018-10-01 01:11:59,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:59,914 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 152 transitions. [2018-10-01 01:11:59,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-10-01 01:11:59,914 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 152 transitions. [2018-10-01 01:11:59,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-01 01:11:59,914 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:59,915 INFO L375 BasicCegarLoop]: trace histogram [148, 1, 1, 1] [2018-10-01 01:11:59,915 INFO L423 AbstractCegarLoop]: === Iteration 149 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:59,915 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:59,915 INFO L82 PathProgramCache]: Analyzing trace with hash -101718816, now seen corresponding path program 148 times [2018-10-01 01:11:59,915 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:59,915 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:59,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:59,916 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:59,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:00,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:00,929 INFO L134 CoverageAnalysis]: Checked inductivity of 11026 backedges. 0 proven. 11026 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:00,929 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:00,929 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:00,936 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:12:01,037 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:12:01,037 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:01,042 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:01,317 INFO L134 CoverageAnalysis]: Checked inductivity of 11026 backedges. 0 proven. 11026 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:01,337 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:01,338 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150, 150] total 150 [2018-10-01 01:12:01,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 151 states [2018-10-01 01:12:01,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2018-10-01 01:12:01,340 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:01,340 INFO L87 Difference]: Start difference. First operand 152 states and 152 transitions. Second operand 151 states. [2018-10-01 01:12:03,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:03,009 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-10-01 01:12:03,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-10-01 01:12:03,010 INFO L78 Accepts]: Start accepts. Automaton has 151 states. Word has length 151 [2018-10-01 01:12:03,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:03,010 INFO L225 Difference]: With dead ends: 155 [2018-10-01 01:12:03,010 INFO L226 Difference]: Without dead ends: 153 [2018-10-01 01:12:03,010 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:12:03,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-10-01 01:12:03,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-10-01 01:12:03,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-10-01 01:12:03,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2018-10-01 01:12:03,013 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 151 [2018-10-01 01:12:03,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:03,013 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2018-10-01 01:12:03,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has 151 states. [2018-10-01 01:12:03,013 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2018-10-01 01:12:03,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-01 01:12:03,013 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:03,013 INFO L375 BasicCegarLoop]: trace histogram [149, 1, 1, 1] [2018-10-01 01:12:03,013 INFO L423 AbstractCegarLoop]: === Iteration 150 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:03,014 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:03,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1141680134, now seen corresponding path program 149 times [2018-10-01 01:12:03,014 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:03,014 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:03,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:03,014 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:03,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:03,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:04,029 INFO L134 CoverageAnalysis]: Checked inductivity of 11175 backedges. 0 proven. 11175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:04,029 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:04,030 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:04,037 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:12:04,241 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 76 check-sat command(s) [2018-10-01 01:12:04,241 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:04,248 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:04,632 INFO L134 CoverageAnalysis]: Checked inductivity of 11175 backedges. 0 proven. 11175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:04,652 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:04,652 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151, 151] total 151 [2018-10-01 01:12:04,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-10-01 01:12:04,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-10-01 01:12:04,655 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:04,655 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 152 states. [2018-10-01 01:12:06,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:06,386 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2018-10-01 01:12:06,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-10-01 01:12:06,386 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 152 [2018-10-01 01:12:06,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:06,386 INFO L225 Difference]: With dead ends: 156 [2018-10-01 01:12:06,387 INFO L226 Difference]: Without dead ends: 154 [2018-10-01 01:12:06,387 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:12:06,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-10-01 01:12:06,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2018-10-01 01:12:06,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-10-01 01:12:06,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 154 transitions. [2018-10-01 01:12:06,390 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 154 transitions. Word has length 152 [2018-10-01 01:12:06,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:06,390 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 154 transitions. [2018-10-01 01:12:06,390 INFO L481 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-10-01 01:12:06,390 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 154 transitions. [2018-10-01 01:12:06,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-01 01:12:06,391 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:06,391 INFO L375 BasicCegarLoop]: trace histogram [150, 1, 1, 1] [2018-10-01 01:12:06,391 INFO L423 AbstractCegarLoop]: === Iteration 151 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:06,391 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:06,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1032341920, now seen corresponding path program 150 times [2018-10-01 01:12:06,391 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:06,391 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:06,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:06,392 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:06,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:06,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:07,437 INFO L134 CoverageAnalysis]: Checked inductivity of 11325 backedges. 0 proven. 11325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:07,437 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:07,437 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:07,445 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:12:07,619 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 76 check-sat command(s) [2018-10-01 01:12:07,619 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:07,625 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:07,897 INFO L134 CoverageAnalysis]: Checked inductivity of 11325 backedges. 0 proven. 11325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:07,918 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:07,918 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152, 152] total 152 [2018-10-01 01:12:07,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 153 states [2018-10-01 01:12:07,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2018-10-01 01:12:07,920 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:07,920 INFO L87 Difference]: Start difference. First operand 154 states and 154 transitions. Second operand 153 states. [2018-10-01 01:12:09,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:09,710 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-10-01 01:12:09,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-10-01 01:12:09,710 INFO L78 Accepts]: Start accepts. Automaton has 153 states. Word has length 153 [2018-10-01 01:12:09,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:09,710 INFO L225 Difference]: With dead ends: 157 [2018-10-01 01:12:09,710 INFO L226 Difference]: Without dead ends: 155 [2018-10-01 01:12:09,711 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:12:09,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-10-01 01:12:09,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-10-01 01:12:09,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-10-01 01:12:09,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-10-01 01:12:09,713 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 153 [2018-10-01 01:12:09,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:09,713 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-10-01 01:12:09,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has 153 states. [2018-10-01 01:12:09,713 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-10-01 01:12:09,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-01 01:12:09,714 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:09,714 INFO L375 BasicCegarLoop]: trace histogram [151, 1, 1, 1] [2018-10-01 01:12:09,714 INFO L423 AbstractCegarLoop]: === Iteration 152 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:09,714 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:09,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1937824582, now seen corresponding path program 151 times [2018-10-01 01:12:09,714 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:09,714 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:09,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:09,715 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:09,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:09,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:10,765 INFO L134 CoverageAnalysis]: Checked inductivity of 11476 backedges. 0 proven. 11476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:10,766 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:10,766 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:10,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:12:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:10,860 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:11,138 INFO L134 CoverageAnalysis]: Checked inductivity of 11476 backedges. 0 proven. 11476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:11,158 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:11,158 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153, 153] total 153 [2018-10-01 01:12:11,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-10-01 01:12:11,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-10-01 01:12:11,161 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:11,161 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 154 states. [2018-10-01 01:12:12,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:12,788 INFO L93 Difference]: Finished difference Result 158 states and 158 transitions. [2018-10-01 01:12:12,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-10-01 01:12:12,788 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 154 [2018-10-01 01:12:12,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:12,788 INFO L225 Difference]: With dead ends: 158 [2018-10-01 01:12:12,788 INFO L226 Difference]: Without dead ends: 156 [2018-10-01 01:12:12,789 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:12:12,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-10-01 01:12:12,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2018-10-01 01:12:12,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-10-01 01:12:12,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2018-10-01 01:12:12,791 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 154 [2018-10-01 01:12:12,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:12,791 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2018-10-01 01:12:12,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-10-01 01:12:12,791 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2018-10-01 01:12:12,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-01 01:12:12,792 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:12,792 INFO L375 BasicCegarLoop]: trace histogram [152, 1, 1, 1] [2018-10-01 01:12:12,792 INFO L423 AbstractCegarLoop]: === Iteration 153 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:12,792 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:12,792 INFO L82 PathProgramCache]: Analyzing trace with hash -56983968, now seen corresponding path program 152 times [2018-10-01 01:12:12,792 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:12,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:12,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:12,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:12:12,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:12,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:13,820 INFO L134 CoverageAnalysis]: Checked inductivity of 11628 backedges. 0 proven. 11628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:13,820 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:13,820 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:13,856 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:12:13,942 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:12:13,942 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:13,946 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:14,218 INFO L134 CoverageAnalysis]: Checked inductivity of 11628 backedges. 0 proven. 11628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:14,238 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:14,238 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154, 154] total 154 [2018-10-01 01:12:14,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 155 states [2018-10-01 01:12:14,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2018-10-01 01:12:14,240 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:14,240 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 155 states. [2018-10-01 01:12:15,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:15,980 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-10-01 01:12:15,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-10-01 01:12:15,981 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 155 [2018-10-01 01:12:15,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:15,981 INFO L225 Difference]: With dead ends: 159 [2018-10-01 01:12:15,981 INFO L226 Difference]: Without dead ends: 157 [2018-10-01 01:12:15,981 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:12:15,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-10-01 01:12:15,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-10-01 01:12:15,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-10-01 01:12:15,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-10-01 01:12:15,983 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 155 [2018-10-01 01:12:15,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:15,984 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-10-01 01:12:15,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has 155 states. [2018-10-01 01:12:15,984 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-10-01 01:12:15,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-01 01:12:15,984 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:15,984 INFO L375 BasicCegarLoop]: trace histogram [153, 1, 1, 1] [2018-10-01 01:12:15,984 INFO L423 AbstractCegarLoop]: === Iteration 154 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:15,985 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:15,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1766506874, now seen corresponding path program 153 times [2018-10-01 01:12:15,985 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:15,985 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:15,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:15,985 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:15,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:17,012 INFO L134 CoverageAnalysis]: Checked inductivity of 11781 backedges. 0 proven. 11781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:17,013 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:17,013 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:17,020 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:12:17,222 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 78 check-sat command(s) [2018-10-01 01:12:17,222 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:17,227 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:17,509 INFO L134 CoverageAnalysis]: Checked inductivity of 11781 backedges. 0 proven. 11781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:17,531 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:17,531 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155, 155] total 155 [2018-10-01 01:12:17,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-10-01 01:12:17,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-10-01 01:12:17,533 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:17,533 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 156 states. [2018-10-01 01:12:19,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:19,302 INFO L93 Difference]: Finished difference Result 160 states and 160 transitions. [2018-10-01 01:12:19,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-10-01 01:12:19,302 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 156 [2018-10-01 01:12:19,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:19,303 INFO L225 Difference]: With dead ends: 160 [2018-10-01 01:12:19,303 INFO L226 Difference]: Without dead ends: 158 [2018-10-01 01:12:19,303 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:12:19,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-10-01 01:12:19,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2018-10-01 01:12:19,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-10-01 01:12:19,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2018-10-01 01:12:19,306 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 156 [2018-10-01 01:12:19,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:19,306 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2018-10-01 01:12:19,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-10-01 01:12:19,306 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2018-10-01 01:12:19,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-10-01 01:12:19,307 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:19,307 INFO L375 BasicCegarLoop]: trace histogram [154, 1, 1, 1] [2018-10-01 01:12:19,308 INFO L423 AbstractCegarLoop]: === Iteration 155 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:19,308 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:19,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1072857888, now seen corresponding path program 154 times [2018-10-01 01:12:19,308 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:19,308 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:19,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:19,309 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:19,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:20,573 INFO L134 CoverageAnalysis]: Checked inductivity of 11935 backedges. 0 proven. 11935 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:20,573 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:20,573 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:20,581 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:12:20,688 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:12:20,688 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:20,693 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:20,977 INFO L134 CoverageAnalysis]: Checked inductivity of 11935 backedges. 0 proven. 11935 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:20,997 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:20,998 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156, 156] total 156 [2018-10-01 01:12:20,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 157 states [2018-10-01 01:12:21,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2018-10-01 01:12:21,000 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:21,000 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 157 states. [2018-10-01 01:12:22,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:22,822 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-10-01 01:12:22,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-10-01 01:12:22,822 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 157 [2018-10-01 01:12:22,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:22,823 INFO L225 Difference]: With dead ends: 161 [2018-10-01 01:12:22,823 INFO L226 Difference]: Without dead ends: 159 [2018-10-01 01:12:22,823 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:12:22,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-01 01:12:22,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-10-01 01:12:22,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-10-01 01:12:22,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-10-01 01:12:22,825 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 157 [2018-10-01 01:12:22,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:22,825 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-10-01 01:12:22,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has 157 states. [2018-10-01 01:12:22,825 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-10-01 01:12:22,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-01 01:12:22,826 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:22,826 INFO L375 BasicCegarLoop]: trace histogram [155, 1, 1, 1] [2018-10-01 01:12:22,826 INFO L423 AbstractCegarLoop]: === Iteration 156 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:22,826 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:22,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1101147706, now seen corresponding path program 155 times [2018-10-01 01:12:22,826 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:22,826 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:22,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:22,827 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:22,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:22,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:23,882 INFO L134 CoverageAnalysis]: Checked inductivity of 12090 backedges. 0 proven. 12090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:23,883 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:23,883 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:23,889 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:12:24,087 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 79 check-sat command(s) [2018-10-01 01:12:24,087 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:24,092 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:24,383 INFO L134 CoverageAnalysis]: Checked inductivity of 12090 backedges. 0 proven. 12090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:24,404 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:24,404 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157, 157] total 157 [2018-10-01 01:12:24,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-10-01 01:12:24,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-10-01 01:12:24,407 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:24,407 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 158 states. [2018-10-01 01:12:26,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:26,325 INFO L93 Difference]: Finished difference Result 162 states and 162 transitions. [2018-10-01 01:12:26,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-10-01 01:12:26,325 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 158 [2018-10-01 01:12:26,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:26,326 INFO L225 Difference]: With dead ends: 162 [2018-10-01 01:12:26,326 INFO L226 Difference]: Without dead ends: 160 [2018-10-01 01:12:26,326 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:12:26,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-10-01 01:12:26,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2018-10-01 01:12:26,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-10-01 01:12:26,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 160 transitions. [2018-10-01 01:12:26,329 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 160 transitions. Word has length 158 [2018-10-01 01:12:26,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:26,329 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 160 transitions. [2018-10-01 01:12:26,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-10-01 01:12:26,329 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 160 transitions. [2018-10-01 01:12:26,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-10-01 01:12:26,330 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:26,330 INFO L375 BasicCegarLoop]: trace histogram [156, 1, 1, 1] [2018-10-01 01:12:26,330 INFO L423 AbstractCegarLoop]: === Iteration 157 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:26,330 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:26,330 INFO L82 PathProgramCache]: Analyzing trace with hash 224155616, now seen corresponding path program 156 times [2018-10-01 01:12:26,330 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:26,330 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:26,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:26,331 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:26,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:27,447 INFO L134 CoverageAnalysis]: Checked inductivity of 12246 backedges. 0 proven. 12246 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:27,448 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:27,448 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:27,456 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:12:27,644 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2018-10-01 01:12:27,644 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:27,651 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:27,938 INFO L134 CoverageAnalysis]: Checked inductivity of 12246 backedges. 0 proven. 12246 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:27,958 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:27,959 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [158, 158] total 158 [2018-10-01 01:12:27,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 159 states [2018-10-01 01:12:27,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2018-10-01 01:12:27,961 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:27,961 INFO L87 Difference]: Start difference. First operand 160 states and 160 transitions. Second operand 159 states. [2018-10-01 01:12:29,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:29,909 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-10-01 01:12:29,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-10-01 01:12:29,909 INFO L78 Accepts]: Start accepts. Automaton has 159 states. Word has length 159 [2018-10-01 01:12:29,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:29,910 INFO L225 Difference]: With dead ends: 163 [2018-10-01 01:12:29,910 INFO L226 Difference]: Without dead ends: 161 [2018-10-01 01:12:29,910 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:12:29,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-10-01 01:12:29,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-10-01 01:12:29,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-10-01 01:12:29,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-10-01 01:12:29,912 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 159 [2018-10-01 01:12:29,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:29,913 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-10-01 01:12:29,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has 159 states. [2018-10-01 01:12:29,913 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-10-01 01:12:29,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-01 01:12:29,913 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:29,913 INFO L375 BasicCegarLoop]: trace histogram [157, 1, 1, 1] [2018-10-01 01:12:29,913 INFO L423 AbstractCegarLoop]: === Iteration 158 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:29,913 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:29,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1641114362, now seen corresponding path program 157 times [2018-10-01 01:12:29,914 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:29,914 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:29,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:29,914 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:29,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:31,044 INFO L134 CoverageAnalysis]: Checked inductivity of 12403 backedges. 0 proven. 12403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:31,044 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:31,044 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:31,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:12:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:31,146 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:31,432 INFO L134 CoverageAnalysis]: Checked inductivity of 12403 backedges. 0 proven. 12403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:31,452 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:31,453 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159, 159] total 159 [2018-10-01 01:12:31,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-10-01 01:12:31,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-10-01 01:12:31,455 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:31,455 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 160 states. [2018-10-01 01:12:32,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:32,507 INFO L93 Difference]: Finished difference Result 164 states and 164 transitions. [2018-10-01 01:12:32,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-10-01 01:12:32,507 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 160 [2018-10-01 01:12:32,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:32,508 INFO L225 Difference]: With dead ends: 164 [2018-10-01 01:12:32,508 INFO L226 Difference]: Without dead ends: 162 [2018-10-01 01:12:32,508 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:12:32,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-10-01 01:12:32,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2018-10-01 01:12:32,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-10-01 01:12:32,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2018-10-01 01:12:32,510 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 160 [2018-10-01 01:12:32,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:32,510 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2018-10-01 01:12:32,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-10-01 01:12:32,511 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2018-10-01 01:12:32,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-01 01:12:32,511 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:32,511 INFO L375 BasicCegarLoop]: trace histogram [158, 1, 1, 1] [2018-10-01 01:12:32,511 INFO L423 AbstractCegarLoop]: === Iteration 159 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:32,511 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:32,511 INFO L82 PathProgramCache]: Analyzing trace with hash 665058464, now seen corresponding path program 158 times [2018-10-01 01:12:32,512 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:32,512 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:32,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:32,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:12:32,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:33,617 INFO L134 CoverageAnalysis]: Checked inductivity of 12561 backedges. 0 proven. 12561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:33,617 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:33,617 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:33,627 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:12:33,716 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:12:33,717 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:33,721 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:34,060 INFO L134 CoverageAnalysis]: Checked inductivity of 12561 backedges. 0 proven. 12561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:34,080 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:34,081 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160, 160] total 160 [2018-10-01 01:12:34,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 161 states [2018-10-01 01:12:34,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2018-10-01 01:12:34,083 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:34,083 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand 161 states. [2018-10-01 01:12:35,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:35,367 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-10-01 01:12:35,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-10-01 01:12:35,368 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 161 [2018-10-01 01:12:35,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:35,368 INFO L225 Difference]: With dead ends: 165 [2018-10-01 01:12:35,368 INFO L226 Difference]: Without dead ends: 163 [2018-10-01 01:12:35,368 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:12:35,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-10-01 01:12:35,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-10-01 01:12:35,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-10-01 01:12:35,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-10-01 01:12:35,371 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 161 [2018-10-01 01:12:35,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:35,371 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-10-01 01:12:35,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has 161 states. [2018-10-01 01:12:35,371 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-10-01 01:12:35,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-01 01:12:35,371 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:35,372 INFO L375 BasicCegarLoop]: trace histogram [159, 1, 1, 1] [2018-10-01 01:12:35,372 INFO L423 AbstractCegarLoop]: === Iteration 160 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:35,372 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:35,372 INFO L82 PathProgramCache]: Analyzing trace with hash -858027962, now seen corresponding path program 159 times [2018-10-01 01:12:35,372 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:35,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:35,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:35,373 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:35,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:35,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:36,482 INFO L134 CoverageAnalysis]: Checked inductivity of 12720 backedges. 0 proven. 12720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:36,482 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:36,482 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:36,490 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:12:36,763 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 81 check-sat command(s) [2018-10-01 01:12:36,763 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:36,768 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:37,058 INFO L134 CoverageAnalysis]: Checked inductivity of 12720 backedges. 0 proven. 12720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:37,079 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:37,080 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161, 161] total 161 [2018-10-01 01:12:37,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-10-01 01:12:37,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-10-01 01:12:37,082 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:37,082 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 162 states. [2018-10-01 01:12:38,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:38,791 INFO L93 Difference]: Finished difference Result 166 states and 166 transitions. [2018-10-01 01:12:38,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-10-01 01:12:38,792 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 162 [2018-10-01 01:12:38,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:38,792 INFO L225 Difference]: With dead ends: 166 [2018-10-01 01:12:38,792 INFO L226 Difference]: Without dead ends: 164 [2018-10-01 01:12:38,793 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:12:38,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-10-01 01:12:38,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2018-10-01 01:12:38,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-10-01 01:12:38,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 164 transitions. [2018-10-01 01:12:38,795 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 164 transitions. Word has length 162 [2018-10-01 01:12:38,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:38,795 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 164 transitions. [2018-10-01 01:12:38,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-10-01 01:12:38,795 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 164 transitions. [2018-10-01 01:12:38,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-10-01 01:12:38,796 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:38,796 INFO L375 BasicCegarLoop]: trace histogram [160, 1, 1, 1] [2018-10-01 01:12:38,796 INFO L423 AbstractCegarLoop]: === Iteration 161 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:38,796 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:38,796 INFO L82 PathProgramCache]: Analyzing trace with hash -829066912, now seen corresponding path program 160 times [2018-10-01 01:12:38,796 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:38,797 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:38,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:38,797 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:38,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:39,923 INFO L134 CoverageAnalysis]: Checked inductivity of 12880 backedges. 0 proven. 12880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:39,924 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:39,924 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:39,932 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:12:40,046 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:12:40,046 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:40,051 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:40,440 INFO L134 CoverageAnalysis]: Checked inductivity of 12880 backedges. 0 proven. 12880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:40,461 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:40,461 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [162, 162] total 162 [2018-10-01 01:12:40,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 163 states [2018-10-01 01:12:40,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2018-10-01 01:12:40,464 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:40,464 INFO L87 Difference]: Start difference. First operand 164 states and 164 transitions. Second operand 163 states. [2018-10-01 01:12:41,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:41,876 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-10-01 01:12:41,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-10-01 01:12:41,876 INFO L78 Accepts]: Start accepts. Automaton has 163 states. Word has length 163 [2018-10-01 01:12:41,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:41,877 INFO L225 Difference]: With dead ends: 167 [2018-10-01 01:12:41,877 INFO L226 Difference]: Without dead ends: 165 [2018-10-01 01:12:41,877 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:12:41,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-10-01 01:12:41,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-10-01 01:12:41,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-10-01 01:12:41,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2018-10-01 01:12:41,879 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 163 [2018-10-01 01:12:41,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:41,879 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2018-10-01 01:12:41,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has 163 states. [2018-10-01 01:12:41,879 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2018-10-01 01:12:41,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-01 01:12:41,880 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:41,880 INFO L375 BasicCegarLoop]: trace histogram [161, 1, 1, 1] [2018-10-01 01:12:41,880 INFO L423 AbstractCegarLoop]: === Iteration 162 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:41,880 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:41,880 INFO L82 PathProgramCache]: Analyzing trace with hash 68725638, now seen corresponding path program 161 times [2018-10-01 01:12:41,880 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:41,880 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:41,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:41,881 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:41,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:41,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:43,017 INFO L134 CoverageAnalysis]: Checked inductivity of 13041 backedges. 0 proven. 13041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:43,017 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:43,017 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:43,024 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:12:43,233 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 82 check-sat command(s) [2018-10-01 01:12:43,233 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:43,239 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:43,544 INFO L134 CoverageAnalysis]: Checked inductivity of 13041 backedges. 0 proven. 13041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:43,565 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:43,565 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163, 163] total 163 [2018-10-01 01:12:43,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-10-01 01:12:43,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-10-01 01:12:43,567 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:43,567 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand 164 states. [2018-10-01 01:12:44,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:44,914 INFO L93 Difference]: Finished difference Result 168 states and 168 transitions. [2018-10-01 01:12:44,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-10-01 01:12:44,914 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 164 [2018-10-01 01:12:44,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:44,915 INFO L225 Difference]: With dead ends: 168 [2018-10-01 01:12:44,915 INFO L226 Difference]: Without dead ends: 166 [2018-10-01 01:12:44,915 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:12:44,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-10-01 01:12:44,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-10-01 01:12:44,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-10-01 01:12:44,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2018-10-01 01:12:44,918 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 164 [2018-10-01 01:12:44,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:44,919 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2018-10-01 01:12:44,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-10-01 01:12:44,919 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2018-10-01 01:12:44,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-10-01 01:12:44,919 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:44,919 INFO L375 BasicCegarLoop]: trace histogram [162, 1, 1, 1] [2018-10-01 01:12:44,920 INFO L423 AbstractCegarLoop]: === Iteration 163 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:44,920 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:44,920 INFO L82 PathProgramCache]: Analyzing trace with hash 2130490912, now seen corresponding path program 162 times [2018-10-01 01:12:44,920 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:44,920 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:44,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:44,921 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:44,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:45,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:46,220 INFO L134 CoverageAnalysis]: Checked inductivity of 13203 backedges. 0 proven. 13203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:46,220 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:46,220 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:46,227 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:12:46,424 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 82 check-sat command(s) [2018-10-01 01:12:46,424 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:46,430 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:46,732 INFO L134 CoverageAnalysis]: Checked inductivity of 13203 backedges. 0 proven. 13203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:46,752 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:46,752 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164, 164] total 164 [2018-10-01 01:12:46,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 165 states [2018-10-01 01:12:46,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2018-10-01 01:12:46,755 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:46,755 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand 165 states. [2018-10-01 01:12:48,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:48,771 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-10-01 01:12:48,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-10-01 01:12:48,772 INFO L78 Accepts]: Start accepts. Automaton has 165 states. Word has length 165 [2018-10-01 01:12:48,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:48,772 INFO L225 Difference]: With dead ends: 169 [2018-10-01 01:12:48,772 INFO L226 Difference]: Without dead ends: 167 [2018-10-01 01:12:48,773 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:12:48,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-10-01 01:12:48,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-10-01 01:12:48,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-10-01 01:12:48,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-10-01 01:12:48,775 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 165 [2018-10-01 01:12:48,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:48,775 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-10-01 01:12:48,775 INFO L481 AbstractCegarLoop]: Interpolant automaton has 165 states. [2018-10-01 01:12:48,775 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-10-01 01:12:48,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-01 01:12:48,776 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:48,776 INFO L375 BasicCegarLoop]: trace histogram [163, 1, 1, 1] [2018-10-01 01:12:48,776 INFO L423 AbstractCegarLoop]: === Iteration 164 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:48,776 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:48,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1620704966, now seen corresponding path program 163 times [2018-10-01 01:12:48,776 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:48,776 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:48,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:48,777 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:48,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:49,922 INFO L134 CoverageAnalysis]: Checked inductivity of 13366 backedges. 0 proven. 13366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:49,922 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:49,922 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:49,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:12:50,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:50,029 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:50,408 INFO L134 CoverageAnalysis]: Checked inductivity of 13366 backedges. 0 proven. 13366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:50,429 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:50,429 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165, 165] total 165 [2018-10-01 01:12:50,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-10-01 01:12:50,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-10-01 01:12:50,432 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:50,432 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 166 states. [2018-10-01 01:12:51,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:51,592 INFO L93 Difference]: Finished difference Result 170 states and 170 transitions. [2018-10-01 01:12:51,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-10-01 01:12:51,592 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 166 [2018-10-01 01:12:51,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:51,592 INFO L225 Difference]: With dead ends: 170 [2018-10-01 01:12:51,592 INFO L226 Difference]: Without dead ends: 168 [2018-10-01 01:12:51,593 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:12:51,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-10-01 01:12:51,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2018-10-01 01:12:51,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-10-01 01:12:51,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 168 transitions. [2018-10-01 01:12:51,595 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 168 transitions. Word has length 166 [2018-10-01 01:12:51,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:51,595 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 168 transitions. [2018-10-01 01:12:51,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-10-01 01:12:51,595 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 168 transitions. [2018-10-01 01:12:51,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-10-01 01:12:51,596 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:51,596 INFO L375 BasicCegarLoop]: trace histogram [164, 1, 1, 1] [2018-10-01 01:12:51,596 INFO L423 AbstractCegarLoop]: === Iteration 165 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:51,596 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:51,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1297757472, now seen corresponding path program 164 times [2018-10-01 01:12:51,596 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:51,596 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:51,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:51,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:12:51,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:51,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:52,764 INFO L134 CoverageAnalysis]: Checked inductivity of 13530 backedges. 0 proven. 13530 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:52,764 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:52,764 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:52,772 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:12:52,865 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:12:52,865 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:52,870 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:53,182 INFO L134 CoverageAnalysis]: Checked inductivity of 13530 backedges. 0 proven. 13530 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:53,202 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:53,202 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [166, 166] total 166 [2018-10-01 01:12:53,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 167 states [2018-10-01 01:12:53,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2018-10-01 01:12:53,205 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:53,205 INFO L87 Difference]: Start difference. First operand 168 states and 168 transitions. Second operand 167 states. [2018-10-01 01:12:55,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:55,300 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-10-01 01:12:55,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-10-01 01:12:55,301 INFO L78 Accepts]: Start accepts. Automaton has 167 states. Word has length 167 [2018-10-01 01:12:55,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:55,302 INFO L225 Difference]: With dead ends: 171 [2018-10-01 01:12:55,302 INFO L226 Difference]: Without dead ends: 169 [2018-10-01 01:12:55,302 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:12:55,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-10-01 01:12:55,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-10-01 01:12:55,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-10-01 01:12:55,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-10-01 01:12:55,304 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 167 [2018-10-01 01:12:55,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:55,304 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-10-01 01:12:55,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has 167 states. [2018-10-01 01:12:55,304 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-10-01 01:12:55,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-01 01:12:55,305 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:55,305 INFO L375 BasicCegarLoop]: trace histogram [165, 1, 1, 1] [2018-10-01 01:12:55,305 INFO L423 AbstractCegarLoop]: === Iteration 166 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:55,305 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:55,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1575779834, now seen corresponding path program 165 times [2018-10-01 01:12:55,305 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:55,305 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:55,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:55,306 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:55,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:56,594 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:56,594 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:56,594 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:56,602 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:12:56,837 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 84 check-sat command(s) [2018-10-01 01:12:56,838 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:56,843 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:57,154 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:57,174 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:57,175 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167, 167] total 167 [2018-10-01 01:12:57,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-10-01 01:12:57,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-10-01 01:12:57,178 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:57,178 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 168 states. [2018-10-01 01:12:58,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:58,393 INFO L93 Difference]: Finished difference Result 172 states and 172 transitions. [2018-10-01 01:12:58,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-10-01 01:12:58,393 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 168 [2018-10-01 01:12:58,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:58,394 INFO L225 Difference]: With dead ends: 172 [2018-10-01 01:12:58,394 INFO L226 Difference]: Without dead ends: 170 [2018-10-01 01:12:58,394 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:12:58,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-10-01 01:12:58,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2018-10-01 01:12:58,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-10-01 01:12:58,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 170 transitions. [2018-10-01 01:12:58,396 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 170 transitions. Word has length 168 [2018-10-01 01:12:58,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:58,396 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 170 transitions. [2018-10-01 01:12:58,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-10-01 01:12:58,396 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 170 transitions. [2018-10-01 01:12:58,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-10-01 01:12:58,397 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:58,397 INFO L375 BasicCegarLoop]: trace histogram [166, 1, 1, 1] [2018-10-01 01:12:58,397 INFO L423 AbstractCegarLoop]: === Iteration 167 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:58,397 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:58,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1604538464, now seen corresponding path program 166 times [2018-10-01 01:12:58,397 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:58,398 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:58,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:58,398 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:58,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:58,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:59,587 INFO L134 CoverageAnalysis]: Checked inductivity of 13861 backedges. 0 proven. 13861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:59,587 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:59,587 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:59,594 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:12:59,708 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:12:59,708 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:59,713 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:00,025 INFO L134 CoverageAnalysis]: Checked inductivity of 13861 backedges. 0 proven. 13861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:00,046 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:00,047 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [168, 168] total 168 [2018-10-01 01:13:00,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 169 states [2018-10-01 01:13:00,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2018-10-01 01:13:00,049 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:00,049 INFO L87 Difference]: Start difference. First operand 170 states and 170 transitions. Second operand 169 states. [2018-10-01 01:13:02,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:02,295 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-10-01 01:13:02,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-10-01 01:13:02,295 INFO L78 Accepts]: Start accepts. Automaton has 169 states. Word has length 169 [2018-10-01 01:13:02,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:02,295 INFO L225 Difference]: With dead ends: 173 [2018-10-01 01:13:02,296 INFO L226 Difference]: Without dead ends: 171 [2018-10-01 01:13:02,296 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:13:02,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-10-01 01:13:02,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-10-01 01:13:02,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-10-01 01:13:02,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-10-01 01:13:02,298 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 169 [2018-10-01 01:13:02,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:02,298 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-10-01 01:13:02,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has 169 states. [2018-10-01 01:13:02,298 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-10-01 01:13:02,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-01 01:13:02,299 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:02,299 INFO L375 BasicCegarLoop]: trace histogram [167, 1, 1, 1] [2018-10-01 01:13:02,299 INFO L423 AbstractCegarLoop]: === Iteration 168 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:02,299 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:02,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1798911302, now seen corresponding path program 167 times [2018-10-01 01:13:02,299 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:02,299 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:02,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:02,300 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:02,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:03,543 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 14028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:03,543 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:03,543 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:03,551 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:13:03,778 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 85 check-sat command(s) [2018-10-01 01:13:03,778 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:03,784 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:04,097 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 14028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:04,118 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:04,118 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169, 169] total 169 [2018-10-01 01:13:04,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-10-01 01:13:04,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-10-01 01:13:04,121 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:04,121 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 170 states. [2018-10-01 01:13:05,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:05,598 INFO L93 Difference]: Finished difference Result 174 states and 174 transitions. [2018-10-01 01:13:05,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-10-01 01:13:05,599 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 170 [2018-10-01 01:13:05,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:05,599 INFO L225 Difference]: With dead ends: 174 [2018-10-01 01:13:05,599 INFO L226 Difference]: Without dead ends: 172 [2018-10-01 01:13:05,600 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:13:05,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-10-01 01:13:05,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2018-10-01 01:13:05,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-10-01 01:13:05,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2018-10-01 01:13:05,602 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 170 [2018-10-01 01:13:05,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:05,602 INFO L480 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2018-10-01 01:13:05,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-10-01 01:13:05,602 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2018-10-01 01:13:05,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-01 01:13:05,603 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:05,603 INFO L375 BasicCegarLoop]: trace histogram [168, 1, 1, 1] [2018-10-01 01:13:05,603 INFO L423 AbstractCegarLoop]: === Iteration 169 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:05,603 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:05,603 INFO L82 PathProgramCache]: Analyzing trace with hash -68328352, now seen corresponding path program 168 times [2018-10-01 01:13:05,603 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:05,603 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:05,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:05,604 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:05,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:06,867 INFO L134 CoverageAnalysis]: Checked inductivity of 14196 backedges. 0 proven. 14196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:06,867 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:06,868 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:06,874 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:13:07,086 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2018-10-01 01:13:07,087 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:07,092 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:07,407 INFO L134 CoverageAnalysis]: Checked inductivity of 14196 backedges. 0 proven. 14196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:07,428 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:07,428 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [170, 170] total 170 [2018-10-01 01:13:07,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 171 states [2018-10-01 01:13:07,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2018-10-01 01:13:07,432 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:07,432 INFO L87 Difference]: Start difference. First operand 172 states and 172 transitions. Second operand 171 states. [2018-10-01 01:13:09,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:09,331 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-10-01 01:13:09,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-10-01 01:13:09,331 INFO L78 Accepts]: Start accepts. Automaton has 171 states. Word has length 171 [2018-10-01 01:13:09,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:09,332 INFO L225 Difference]: With dead ends: 175 [2018-10-01 01:13:09,332 INFO L226 Difference]: Without dead ends: 173 [2018-10-01 01:13:09,332 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:13:09,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-10-01 01:13:09,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-10-01 01:13:09,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-10-01 01:13:09,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2018-10-01 01:13:09,334 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 171 [2018-10-01 01:13:09,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:09,334 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2018-10-01 01:13:09,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has 171 states. [2018-10-01 01:13:09,335 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2018-10-01 01:13:09,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-01 01:13:09,335 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:09,335 INFO L375 BasicCegarLoop]: trace histogram [169, 1, 1, 1] [2018-10-01 01:13:09,335 INFO L423 AbstractCegarLoop]: === Iteration 170 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:09,335 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:09,335 INFO L82 PathProgramCache]: Analyzing trace with hash -2118182778, now seen corresponding path program 169 times [2018-10-01 01:13:09,336 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:09,336 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:09,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:09,336 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:09,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:09,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:10,580 INFO L134 CoverageAnalysis]: Checked inductivity of 14365 backedges. 0 proven. 14365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:10,580 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:10,580 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:10,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:13:10,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:10,686 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:11,122 INFO L134 CoverageAnalysis]: Checked inductivity of 14365 backedges. 0 proven. 14365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:11,142 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:11,143 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171, 171] total 171 [2018-10-01 01:13:11,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-10-01 01:13:11,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-10-01 01:13:11,145 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:11,146 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 172 states. [2018-10-01 01:13:13,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:13,509 INFO L93 Difference]: Finished difference Result 176 states and 176 transitions. [2018-10-01 01:13:13,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-10-01 01:13:13,509 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 172 [2018-10-01 01:13:13,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:13,510 INFO L225 Difference]: With dead ends: 176 [2018-10-01 01:13:13,510 INFO L226 Difference]: Without dead ends: 174 [2018-10-01 01:13:13,510 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 01:13:13,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-10-01 01:13:13,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2018-10-01 01:13:13,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-10-01 01:13:13,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 174 transitions. [2018-10-01 01:13:13,513 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 174 transitions. Word has length 172 [2018-10-01 01:13:13,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:13,513 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 174 transitions. [2018-10-01 01:13:13,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-10-01 01:13:13,514 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 174 transitions. [2018-10-01 01:13:13,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-01 01:13:13,514 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:13,514 INFO L375 BasicCegarLoop]: trace histogram [170, 1, 1, 1] [2018-10-01 01:13:13,514 INFO L423 AbstractCegarLoop]: === Iteration 171 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:13,514 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:13,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1239160544, now seen corresponding path program 170 times [2018-10-01 01:13:13,514 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:13,515 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:13,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:13,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:13:13,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:14,768 INFO L134 CoverageAnalysis]: Checked inductivity of 14535 backedges. 0 proven. 14535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:14,768 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:14,768 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:14,777 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:13:14,878 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:13:14,878 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:14,883 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:15,198 INFO L134 CoverageAnalysis]: Checked inductivity of 14535 backedges. 0 proven. 14535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:15,218 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:15,218 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [172, 172] total 172 [2018-10-01 01:13:15,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 173 states [2018-10-01 01:13:15,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2018-10-01 01:13:15,222 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:15,222 INFO L87 Difference]: Start difference. First operand 174 states and 174 transitions. Second operand 173 states. [2018-10-01 01:13:16,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:16,736 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-10-01 01:13:16,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-10-01 01:13:16,736 INFO L78 Accepts]: Start accepts. Automaton has 173 states. Word has length 173 [2018-10-01 01:13:16,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:16,737 INFO L225 Difference]: With dead ends: 177 [2018-10-01 01:13:16,737 INFO L226 Difference]: Without dead ends: 175 [2018-10-01 01:13:16,737 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:13:16,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-10-01 01:13:16,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-10-01 01:13:16,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-10-01 01:13:16,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-10-01 01:13:16,741 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 173 [2018-10-01 01:13:16,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:16,741 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-10-01 01:13:16,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has 173 states. [2018-10-01 01:13:16,741 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-10-01 01:13:16,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-01 01:13:16,742 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:16,742 INFO L375 BasicCegarLoop]: trace histogram [171, 1, 1, 1] [2018-10-01 01:13:16,742 INFO L423 AbstractCegarLoop]: === Iteration 172 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:16,742 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:16,742 INFO L82 PathProgramCache]: Analyzing trace with hash 240724934, now seen corresponding path program 171 times [2018-10-01 01:13:16,742 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:16,742 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:16,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:16,743 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:16,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:18,046 INFO L134 CoverageAnalysis]: Checked inductivity of 14706 backedges. 0 proven. 14706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:18,046 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:18,046 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:18,055 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:13:18,305 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 87 check-sat command(s) [2018-10-01 01:13:18,306 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:18,311 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:18,636 INFO L134 CoverageAnalysis]: Checked inductivity of 14706 backedges. 0 proven. 14706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:18,656 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:18,657 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173, 173] total 173 [2018-10-01 01:13:18,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-10-01 01:13:18,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-10-01 01:13:18,659 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:18,660 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 174 states. [2018-10-01 01:13:20,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:20,153 INFO L93 Difference]: Finished difference Result 178 states and 178 transitions. [2018-10-01 01:13:20,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-10-01 01:13:20,153 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 174 [2018-10-01 01:13:20,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:20,154 INFO L225 Difference]: With dead ends: 178 [2018-10-01 01:13:20,154 INFO L226 Difference]: Without dead ends: 176 [2018-10-01 01:13:20,154 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:13:20,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-10-01 01:13:20,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2018-10-01 01:13:20,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-10-01 01:13:20,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2018-10-01 01:13:20,157 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 174 [2018-10-01 01:13:20,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:20,157 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2018-10-01 01:13:20,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-10-01 01:13:20,158 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2018-10-01 01:13:20,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-10-01 01:13:20,158 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:20,158 INFO L375 BasicCegarLoop]: trace histogram [172, 1, 1, 1] [2018-10-01 01:13:20,158 INFO L423 AbstractCegarLoop]: === Iteration 173 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:20,158 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:20,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1127465504, now seen corresponding path program 172 times [2018-10-01 01:13:20,159 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:20,159 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:20,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:20,159 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:20,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:21,637 INFO L134 CoverageAnalysis]: Checked inductivity of 14878 backedges. 0 proven. 14878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:21,637 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:21,637 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:21,644 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:13:21,762 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:13:21,763 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:21,769 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:22,089 INFO L134 CoverageAnalysis]: Checked inductivity of 14878 backedges. 0 proven. 14878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:22,110 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:22,110 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [174, 174] total 174 [2018-10-01 01:13:22,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 175 states [2018-10-01 01:13:22,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2018-10-01 01:13:22,113 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:22,114 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand 175 states. [2018-10-01 01:13:24,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:24,474 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-10-01 01:13:24,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-10-01 01:13:24,474 INFO L78 Accepts]: Start accepts. Automaton has 175 states. Word has length 175 [2018-10-01 01:13:24,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:24,475 INFO L225 Difference]: With dead ends: 179 [2018-10-01 01:13:24,475 INFO L226 Difference]: Without dead ends: 177 [2018-10-01 01:13:24,475 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:13:24,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-10-01 01:13:24,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-10-01 01:13:24,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-10-01 01:13:24,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2018-10-01 01:13:24,478 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 175 [2018-10-01 01:13:24,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:24,478 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2018-10-01 01:13:24,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has 175 states. [2018-10-01 01:13:24,478 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2018-10-01 01:13:24,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-01 01:13:24,478 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:24,478 INFO L375 BasicCegarLoop]: trace histogram [173, 1, 1, 1] [2018-10-01 01:13:24,479 INFO L423 AbstractCegarLoop]: === Iteration 174 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:24,479 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:24,479 INFO L82 PathProgramCache]: Analyzing trace with hash -591696122, now seen corresponding path program 173 times [2018-10-01 01:13:24,479 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:24,479 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:24,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:24,480 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:24,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:25,816 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 15051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:25,816 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:25,816 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:25,824 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:13:26,062 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 88 check-sat command(s) [2018-10-01 01:13:26,062 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:26,069 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:26,522 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 15051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:26,543 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:26,543 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175, 175] total 175 [2018-10-01 01:13:26,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-10-01 01:13:26,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-10-01 01:13:26,546 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:26,546 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 176 states. [2018-10-01 01:13:29,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:29,063 INFO L93 Difference]: Finished difference Result 180 states and 180 transitions. [2018-10-01 01:13:29,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-10-01 01:13:29,064 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 176 [2018-10-01 01:13:29,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:29,064 INFO L225 Difference]: With dead ends: 180 [2018-10-01 01:13:29,064 INFO L226 Difference]: Without dead ends: 178 [2018-10-01 01:13:29,065 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 01:13:29,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-10-01 01:13:29,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2018-10-01 01:13:29,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-10-01 01:13:29,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 178 transitions. [2018-10-01 01:13:29,067 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 178 transitions. Word has length 176 [2018-10-01 01:13:29,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:29,067 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 178 transitions. [2018-10-01 01:13:29,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-10-01 01:13:29,067 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 178 transitions. [2018-10-01 01:13:29,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-01 01:13:29,068 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:29,068 INFO L375 BasicCegarLoop]: trace histogram [174, 1, 1, 1] [2018-10-01 01:13:29,068 INFO L423 AbstractCegarLoop]: === Iteration 175 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:29,068 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:29,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1162714464, now seen corresponding path program 174 times [2018-10-01 01:13:29,068 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:29,069 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:29,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:29,069 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:29,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:30,425 INFO L134 CoverageAnalysis]: Checked inductivity of 15225 backedges. 0 proven. 15225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:30,425 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:30,425 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:30,440 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:13:30,665 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 88 check-sat command(s) [2018-10-01 01:13:30,665 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:30,673 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:31,004 INFO L134 CoverageAnalysis]: Checked inductivity of 15225 backedges. 0 proven. 15225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:31,024 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:31,025 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [176, 176] total 176 [2018-10-01 01:13:31,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 177 states [2018-10-01 01:13:31,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2018-10-01 01:13:31,028 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:31,028 INFO L87 Difference]: Start difference. First operand 178 states and 178 transitions. Second operand 177 states. [2018-10-01 01:13:33,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:33,733 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-10-01 01:13:33,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-10-01 01:13:33,734 INFO L78 Accepts]: Start accepts. Automaton has 177 states. Word has length 177 [2018-10-01 01:13:33,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:33,734 INFO L225 Difference]: With dead ends: 181 [2018-10-01 01:13:33,734 INFO L226 Difference]: Without dead ends: 179 [2018-10-01 01:13:33,735 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 01:13:33,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-10-01 01:13:33,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-10-01 01:13:33,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-01 01:13:33,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-10-01 01:13:33,737 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 177 [2018-10-01 01:13:33,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:33,737 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-10-01 01:13:33,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has 177 states. [2018-10-01 01:13:33,737 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-10-01 01:13:33,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-01 01:13:33,738 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:33,738 INFO L375 BasicCegarLoop]: trace histogram [175, 1, 1, 1] [2018-10-01 01:13:33,738 INFO L423 AbstractCegarLoop]: === Iteration 176 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:33,738 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:33,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1684413882, now seen corresponding path program 175 times [2018-10-01 01:13:33,738 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:33,738 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:33,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:33,739 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:33,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:33,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:35,102 INFO L134 CoverageAnalysis]: Checked inductivity of 15400 backedges. 0 proven. 15400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:35,103 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:35,103 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:35,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:13:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:35,221 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:35,555 INFO L134 CoverageAnalysis]: Checked inductivity of 15400 backedges. 0 proven. 15400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:35,576 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:35,576 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177, 177] total 177 [2018-10-01 01:13:35,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-10-01 01:13:35,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-10-01 01:13:35,579 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:35,579 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 178 states. [2018-10-01 01:13:37,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:37,939 INFO L93 Difference]: Finished difference Result 182 states and 182 transitions. [2018-10-01 01:13:37,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-10-01 01:13:37,940 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 178 [2018-10-01 01:13:37,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:37,940 INFO L225 Difference]: With dead ends: 182 [2018-10-01 01:13:37,940 INFO L226 Difference]: Without dead ends: 180 [2018-10-01 01:13:37,940 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:13:37,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-10-01 01:13:37,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2018-10-01 01:13:37,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-10-01 01:13:37,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 180 transitions. [2018-10-01 01:13:37,944 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 180 transitions. Word has length 178 [2018-10-01 01:13:37,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:37,944 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 180 transitions. [2018-10-01 01:13:37,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-10-01 01:13:37,944 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 180 transitions. [2018-10-01 01:13:37,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-10-01 01:13:37,944 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:37,944 INFO L375 BasicCegarLoop]: trace histogram [176, 1, 1, 1] [2018-10-01 01:13:37,945 INFO L423 AbstractCegarLoop]: === Iteration 177 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:37,945 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:37,945 INFO L82 PathProgramCache]: Analyzing trace with hash -677226656, now seen corresponding path program 176 times [2018-10-01 01:13:37,945 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:37,945 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:37,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:37,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:13:37,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:39,321 INFO L134 CoverageAnalysis]: Checked inductivity of 15576 backedges. 0 proven. 15576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:39,321 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:39,321 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:39,328 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:13:39,428 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:13:39,428 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:39,433 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:39,763 INFO L134 CoverageAnalysis]: Checked inductivity of 15576 backedges. 0 proven. 15576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:39,783 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:39,783 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [178, 178] total 178 [2018-10-01 01:13:39,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 179 states [2018-10-01 01:13:39,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2018-10-01 01:13:39,786 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:39,786 INFO L87 Difference]: Start difference. First operand 180 states and 180 transitions. Second operand 179 states. [2018-10-01 01:13:41,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:41,913 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-10-01 01:13:41,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-10-01 01:13:41,914 INFO L78 Accepts]: Start accepts. Automaton has 179 states. Word has length 179 [2018-10-01 01:13:41,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:41,914 INFO L225 Difference]: With dead ends: 183 [2018-10-01 01:13:41,914 INFO L226 Difference]: Without dead ends: 181 [2018-10-01 01:13:41,915 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 01:13:41,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-10-01 01:13:41,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-10-01 01:13:41,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-10-01 01:13:41,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2018-10-01 01:13:41,917 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 179 [2018-10-01 01:13:41,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:41,917 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2018-10-01 01:13:41,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has 179 states. [2018-10-01 01:13:41,917 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2018-10-01 01:13:41,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-01 01:13:41,918 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:41,918 INFO L375 BasicCegarLoop]: trace histogram [177, 1, 1, 1] [2018-10-01 01:13:41,918 INFO L423 AbstractCegarLoop]: === Iteration 178 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:41,918 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:41,918 INFO L82 PathProgramCache]: Analyzing trace with hash 480806278, now seen corresponding path program 177 times [2018-10-01 01:13:41,918 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:41,918 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:41,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:41,919 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:41,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:42,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:43,307 INFO L134 CoverageAnalysis]: Checked inductivity of 15753 backedges. 0 proven. 15753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:43,307 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:43,307 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-01 01:13:43,316 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:43,579 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 90 check-sat command(s) [2018-10-01 01:13:43,579 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:43,585 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:43,920 INFO L134 CoverageAnalysis]: Checked inductivity of 15753 backedges. 0 proven. 15753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:43,941 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:43,941 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179, 179] total 179 [2018-10-01 01:13:43,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-10-01 01:13:43,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-10-01 01:13:43,944 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:43,944 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 180 states. [2018-10-01 01:13:46,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:46,015 INFO L93 Difference]: Finished difference Result 184 states and 184 transitions. [2018-10-01 01:13:46,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-10-01 01:13:46,016 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 180 [2018-10-01 01:13:46,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:46,016 INFO L225 Difference]: With dead ends: 184 [2018-10-01 01:13:46,016 INFO L226 Difference]: Without dead ends: 182 [2018-10-01 01:13:46,016 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 01:13:46,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-10-01 01:13:46,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2018-10-01 01:13:46,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-10-01 01:13:46,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 182 transitions. [2018-10-01 01:13:46,019 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 182 transitions. Word has length 180 [2018-10-01 01:13:46,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:46,019 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 182 transitions. [2018-10-01 01:13:46,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-10-01 01:13:46,019 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 182 transitions. [2018-10-01 01:13:46,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-01 01:13:46,020 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:46,020 INFO L375 BasicCegarLoop]: trace histogram [178, 1, 1, 1] [2018-10-01 01:13:46,020 INFO L423 AbstractCegarLoop]: === Iteration 179 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:46,020 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:46,020 INFO L82 PathProgramCache]: Analyzing trace with hash 2020088864, now seen corresponding path program 178 times [2018-10-01 01:13:46,020 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:46,020 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:46,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:46,021 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:46,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:47,602 INFO L134 CoverageAnalysis]: Checked inductivity of 15931 backedges. 0 proven. 15931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:47,602 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:47,602 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:47,610 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:13:47,734 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:13:47,734 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:47,741 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:48,078 INFO L134 CoverageAnalysis]: Checked inductivity of 15931 backedges. 0 proven. 15931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:48,098 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:48,099 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [180, 180] total 180 [2018-10-01 01:13:48,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 181 states [2018-10-01 01:13:48,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2018-10-01 01:13:48,101 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:48,101 INFO L87 Difference]: Start difference. First operand 182 states and 182 transitions. Second operand 181 states. [2018-10-01 01:13:50,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:50,286 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-10-01 01:13:50,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-10-01 01:13:50,286 INFO L78 Accepts]: Start accepts. Automaton has 181 states. Word has length 181 [2018-10-01 01:13:50,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:50,287 INFO L225 Difference]: With dead ends: 185 [2018-10-01 01:13:50,287 INFO L226 Difference]: Without dead ends: 183 [2018-10-01 01:13:50,287 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 01:13:50,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-01 01:13:50,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-10-01 01:13:50,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-10-01 01:13:50,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-10-01 01:13:50,290 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 181 [2018-10-01 01:13:50,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:50,290 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-10-01 01:13:50,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has 181 states. [2018-10-01 01:13:50,290 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-10-01 01:13:50,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-01 01:13:50,291 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:50,291 INFO L375 BasicCegarLoop]: trace histogram [179, 1, 1, 1] [2018-10-01 01:13:50,291 INFO L423 AbstractCegarLoop]: === Iteration 180 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:50,291 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:50,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1801758522, now seen corresponding path program 179 times [2018-10-01 01:13:50,291 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:50,291 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:50,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:50,292 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:50,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:50,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:51,830 INFO L134 CoverageAnalysis]: Checked inductivity of 16110 backedges. 0 proven. 16110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:51,830 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:51,830 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:51,837 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:13:52,129 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 91 check-sat command(s) [2018-10-01 01:13:52,130 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:52,138 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:52,464 INFO L134 CoverageAnalysis]: Checked inductivity of 16110 backedges. 0 proven. 16110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:52,486 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:52,486 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181, 181] total 181 [2018-10-01 01:13:52,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-10-01 01:13:52,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-10-01 01:13:52,488 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:52,488 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 182 states. [2018-10-01 01:13:54,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:54,941 INFO L93 Difference]: Finished difference Result 186 states and 186 transitions. [2018-10-01 01:13:54,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-10-01 01:13:54,941 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 182 [2018-10-01 01:13:54,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:54,942 INFO L225 Difference]: With dead ends: 186 [2018-10-01 01:13:54,942 INFO L226 Difference]: Without dead ends: 184 [2018-10-01 01:13:54,942 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:13:54,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-10-01 01:13:54,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2018-10-01 01:13:54,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-10-01 01:13:54,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2018-10-01 01:13:54,945 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 182 [2018-10-01 01:13:54,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:54,945 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2018-10-01 01:13:54,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-10-01 01:13:54,946 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2018-10-01 01:13:54,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-01 01:13:54,946 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:54,946 INFO L375 BasicCegarLoop]: trace histogram [180, 1, 1, 1] [2018-10-01 01:13:54,946 INFO L423 AbstractCegarLoop]: === Iteration 181 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:54,946 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:54,946 INFO L82 PathProgramCache]: Analyzing trace with hash -19943200, now seen corresponding path program 180 times [2018-10-01 01:13:54,947 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:54,947 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:54,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:54,947 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:54,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:56,305 INFO L134 CoverageAnalysis]: Checked inductivity of 16290 backedges. 0 proven. 16290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:56,305 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:56,305 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:56,313 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:13:56,549 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2018-10-01 01:13:56,549 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:56,558 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:57,021 INFO L134 CoverageAnalysis]: Checked inductivity of 16290 backedges. 0 proven. 16290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:57,042 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:57,042 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [182, 182] total 182 [2018-10-01 01:13:57,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 183 states [2018-10-01 01:13:57,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 183 interpolants. [2018-10-01 01:13:57,045 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:57,045 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand 183 states. [2018-10-01 01:13:59,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:59,717 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-10-01 01:13:59,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-10-01 01:13:59,717 INFO L78 Accepts]: Start accepts. Automaton has 183 states. Word has length 183 [2018-10-01 01:13:59,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:59,718 INFO L225 Difference]: With dead ends: 187 [2018-10-01 01:13:59,718 INFO L226 Difference]: Without dead ends: 185 [2018-10-01 01:13:59,718 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:13:59,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-10-01 01:13:59,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-10-01 01:13:59,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-01 01:13:59,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-10-01 01:13:59,722 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 183 [2018-10-01 01:13:59,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:59,722 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-10-01 01:13:59,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has 183 states. [2018-10-01 01:13:59,722 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-10-01 01:13:59,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-01 01:13:59,723 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:59,723 INFO L375 BasicCegarLoop]: trace histogram [181, 1, 1, 1] [2018-10-01 01:13:59,723 INFO L423 AbstractCegarLoop]: === Iteration 182 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:59,723 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:59,723 INFO L82 PathProgramCache]: Analyzing trace with hash -618243066, now seen corresponding path program 181 times [2018-10-01 01:13:59,724 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:59,724 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:59,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:59,724 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:59,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:01,196 INFO L134 CoverageAnalysis]: Checked inductivity of 16471 backedges. 0 proven. 16471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:01,196 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:01,196 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:01,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:14:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:01,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:01,713 INFO L134 CoverageAnalysis]: Checked inductivity of 16471 backedges. 0 proven. 16471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:01,733 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:01,733 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183, 183] total 183 [2018-10-01 01:14:01,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-10-01 01:14:01,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-10-01 01:14:01,736 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:01,736 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 184 states. [2018-10-01 01:14:04,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:04,472 INFO L93 Difference]: Finished difference Result 188 states and 188 transitions. [2018-10-01 01:14:04,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-10-01 01:14:04,472 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 184 [2018-10-01 01:14:04,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:04,473 INFO L225 Difference]: With dead ends: 188 [2018-10-01 01:14:04,473 INFO L226 Difference]: Without dead ends: 186 [2018-10-01 01:14:04,473 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 01:14:04,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-10-01 01:14:04,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2018-10-01 01:14:04,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-10-01 01:14:04,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 186 transitions. [2018-10-01 01:14:04,476 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 186 transitions. Word has length 184 [2018-10-01 01:14:04,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:04,477 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 186 transitions. [2018-10-01 01:14:04,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-10-01 01:14:04,477 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 186 transitions. [2018-10-01 01:14:04,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-10-01 01:14:04,477 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:04,477 INFO L375 BasicCegarLoop]: trace histogram [182, 1, 1, 1] [2018-10-01 01:14:04,477 INFO L423 AbstractCegarLoop]: === Iteration 183 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:04,477 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:04,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1985669728, now seen corresponding path program 182 times [2018-10-01 01:14:04,478 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:04,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:04,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:04,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:14:04,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:05,894 INFO L134 CoverageAnalysis]: Checked inductivity of 16653 backedges. 0 proven. 16653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:05,894 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:05,894 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:05,901 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:14:06,004 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:14:06,005 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:06,010 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:06,396 INFO L134 CoverageAnalysis]: Checked inductivity of 16653 backedges. 0 proven. 16653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:06,417 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:06,417 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [184, 184] total 184 [2018-10-01 01:14:06,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 185 states [2018-10-01 01:14:06,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2018-10-01 01:14:06,420 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:06,420 INFO L87 Difference]: Start difference. First operand 186 states and 186 transitions. Second operand 185 states. [2018-10-01 01:14:08,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:08,527 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-10-01 01:14:08,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-10-01 01:14:08,528 INFO L78 Accepts]: Start accepts. Automaton has 185 states. Word has length 185 [2018-10-01 01:14:08,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:08,528 INFO L225 Difference]: With dead ends: 189 [2018-10-01 01:14:08,528 INFO L226 Difference]: Without dead ends: 187 [2018-10-01 01:14:08,528 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 01:14:08,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-10-01 01:14:08,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-10-01 01:14:08,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-10-01 01:14:08,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-10-01 01:14:08,531 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 185 [2018-10-01 01:14:08,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:08,531 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-10-01 01:14:08,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has 185 states. [2018-10-01 01:14:08,531 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-10-01 01:14:08,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-01 01:14:08,532 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:08,532 INFO L375 BasicCegarLoop]: trace histogram [183, 1, 1, 1] [2018-10-01 01:14:08,532 INFO L423 AbstractCegarLoop]: === Iteration 184 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:08,532 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:08,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1426223290, now seen corresponding path program 183 times [2018-10-01 01:14:08,532 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:08,532 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:08,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:08,533 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:08,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:09,964 INFO L134 CoverageAnalysis]: Checked inductivity of 16836 backedges. 0 proven. 16836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:09,964 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:09,964 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:09,970 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:14:10,258 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 93 check-sat command(s) [2018-10-01 01:14:10,258 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:10,264 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:10,650 INFO L134 CoverageAnalysis]: Checked inductivity of 16836 backedges. 0 proven. 16836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:10,671 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:10,671 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185, 185] total 185 [2018-10-01 01:14:10,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-10-01 01:14:10,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-10-01 01:14:10,674 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:10,674 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 186 states. [2018-10-01 01:14:12,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:12,039 INFO L93 Difference]: Finished difference Result 190 states and 190 transitions. [2018-10-01 01:14:12,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-10-01 01:14:12,039 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 186 [2018-10-01 01:14:12,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:12,040 INFO L225 Difference]: With dead ends: 190 [2018-10-01 01:14:12,040 INFO L226 Difference]: Without dead ends: 188 [2018-10-01 01:14:12,040 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 01:14:12,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-10-01 01:14:12,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2018-10-01 01:14:12,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-10-01 01:14:12,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 188 transitions. [2018-10-01 01:14:12,043 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 188 transitions. Word has length 186 [2018-10-01 01:14:12,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:12,043 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 188 transitions. [2018-10-01 01:14:12,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-10-01 01:14:12,043 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 188 transitions. [2018-10-01 01:14:12,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-10-01 01:14:12,043 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:12,044 INFO L375 BasicCegarLoop]: trace histogram [184, 1, 1, 1] [2018-10-01 01:14:12,044 INFO L423 AbstractCegarLoop]: === Iteration 185 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:12,044 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:12,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1263252896, now seen corresponding path program 184 times [2018-10-01 01:14:12,044 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:12,044 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:12,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:12,045 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:12,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:12,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:13,575 INFO L134 CoverageAnalysis]: Checked inductivity of 17020 backedges. 0 proven. 17020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:13,575 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:13,575 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:13,583 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:14:13,717 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:14:13,717 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:13,725 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:14,079 INFO L134 CoverageAnalysis]: Checked inductivity of 17020 backedges. 0 proven. 17020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:14,100 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:14,100 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [186, 186] total 186 [2018-10-01 01:14:14,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 187 states [2018-10-01 01:14:14,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2018-10-01 01:14:14,104 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:14,104 INFO L87 Difference]: Start difference. First operand 188 states and 188 transitions. Second operand 187 states. [2018-10-01 01:14:16,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:16,032 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-10-01 01:14:16,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-10-01 01:14:16,032 INFO L78 Accepts]: Start accepts. Automaton has 187 states. Word has length 187 [2018-10-01 01:14:16,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:16,033 INFO L225 Difference]: With dead ends: 191 [2018-10-01 01:14:16,033 INFO L226 Difference]: Without dead ends: 189 [2018-10-01 01:14:16,033 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:14:16,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-10-01 01:14:16,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-10-01 01:14:16,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-10-01 01:14:16,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2018-10-01 01:14:16,036 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 187 [2018-10-01 01:14:16,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:16,036 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2018-10-01 01:14:16,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has 187 states. [2018-10-01 01:14:16,036 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2018-10-01 01:14:16,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-01 01:14:16,036 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:16,037 INFO L375 BasicCegarLoop]: trace histogram [185, 1, 1, 1] [2018-10-01 01:14:16,037 INFO L423 AbstractCegarLoop]: === Iteration 186 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:16,037 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:16,037 INFO L82 PathProgramCache]: Analyzing trace with hash -506137978, now seen corresponding path program 185 times [2018-10-01 01:14:16,037 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:16,037 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:16,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:16,038 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:16,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:16,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:17,656 INFO L134 CoverageAnalysis]: Checked inductivity of 17205 backedges. 0 proven. 17205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:17,657 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:17,657 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:17,664 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:14:17,934 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 94 check-sat command(s) [2018-10-01 01:14:17,934 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:17,941 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:18,291 INFO L134 CoverageAnalysis]: Checked inductivity of 17205 backedges. 0 proven. 17205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:18,312 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:18,313 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187, 187] total 187 [2018-10-01 01:14:18,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-10-01 01:14:18,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-10-01 01:14:18,316 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:18,316 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand 188 states. [2018-10-01 01:14:20,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:20,824 INFO L93 Difference]: Finished difference Result 192 states and 192 transitions. [2018-10-01 01:14:20,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-10-01 01:14:20,824 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 188 [2018-10-01 01:14:20,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:20,824 INFO L225 Difference]: With dead ends: 192 [2018-10-01 01:14:20,824 INFO L226 Difference]: Without dead ends: 190 [2018-10-01 01:14:20,825 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 01:14:20,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-10-01 01:14:20,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2018-10-01 01:14:20,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-10-01 01:14:20,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 190 transitions. [2018-10-01 01:14:20,827 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 190 transitions. Word has length 188 [2018-10-01 01:14:20,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:20,827 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 190 transitions. [2018-10-01 01:14:20,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-10-01 01:14:20,827 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 190 transitions. [2018-10-01 01:14:20,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-10-01 01:14:20,828 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:20,828 INFO L375 BasicCegarLoop]: trace histogram [186, 1, 1, 1] [2018-10-01 01:14:20,828 INFO L423 AbstractCegarLoop]: === Iteration 187 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:20,828 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:20,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1489588000, now seen corresponding path program 186 times [2018-10-01 01:14:20,828 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:20,828 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:20,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:20,829 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:20,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:22,309 INFO L134 CoverageAnalysis]: Checked inductivity of 17391 backedges. 0 proven. 17391 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:22,310 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:22,310 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:22,316 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:14:22,582 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 94 check-sat command(s) [2018-10-01 01:14:22,582 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:22,591 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:22,993 INFO L134 CoverageAnalysis]: Checked inductivity of 17391 backedges. 0 proven. 17391 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:23,012 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:23,013 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [188, 188] total 188 [2018-10-01 01:14:23,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 189 states [2018-10-01 01:14:23,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2018-10-01 01:14:23,016 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:23,016 INFO L87 Difference]: Start difference. First operand 190 states and 190 transitions. Second operand 189 states. [2018-10-01 01:14:24,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:24,754 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-10-01 01:14:24,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-10-01 01:14:24,755 INFO L78 Accepts]: Start accepts. Automaton has 189 states. Word has length 189 [2018-10-01 01:14:24,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:24,755 INFO L225 Difference]: With dead ends: 193 [2018-10-01 01:14:24,755 INFO L226 Difference]: Without dead ends: 191 [2018-10-01 01:14:24,756 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:14:24,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-10-01 01:14:24,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-10-01 01:14:24,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-10-01 01:14:24,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-10-01 01:14:24,759 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 189 [2018-10-01 01:14:24,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:24,759 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-10-01 01:14:24,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has 189 states. [2018-10-01 01:14:24,760 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-10-01 01:14:24,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-01 01:14:24,760 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:24,760 INFO L375 BasicCegarLoop]: trace histogram [187, 1, 1, 1] [2018-10-01 01:14:24,761 INFO L423 AbstractCegarLoop]: === Iteration 188 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:24,761 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:24,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1067416122, now seen corresponding path program 187 times [2018-10-01 01:14:24,761 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:24,761 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:24,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:24,761 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:24,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:26,247 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:26,247 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:26,248 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:26,255 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:14:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:26,372 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:26,735 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:26,758 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:26,758 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189, 189] total 189 [2018-10-01 01:14:26,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-10-01 01:14:26,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-10-01 01:14:26,761 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:26,761 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 190 states. [2018-10-01 01:14:28,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:28,893 INFO L93 Difference]: Finished difference Result 194 states and 194 transitions. [2018-10-01 01:14:28,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-10-01 01:14:28,893 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 190 [2018-10-01 01:14:28,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:28,894 INFO L225 Difference]: With dead ends: 194 [2018-10-01 01:14:28,894 INFO L226 Difference]: Without dead ends: 192 [2018-10-01 01:14:28,894 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:14:28,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-10-01 01:14:28,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2018-10-01 01:14:28,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-10-01 01:14:28,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 192 transitions. [2018-10-01 01:14:28,896 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 192 transitions. Word has length 190 [2018-10-01 01:14:28,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:28,897 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 192 transitions. [2018-10-01 01:14:28,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-10-01 01:14:28,897 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 192 transitions. [2018-10-01 01:14:28,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-10-01 01:14:28,897 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:28,897 INFO L375 BasicCegarLoop]: trace histogram [188, 1, 1, 1] [2018-10-01 01:14:28,897 INFO L423 AbstractCegarLoop]: === Iteration 189 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:28,897 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:28,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1269834720, now seen corresponding path program 188 times [2018-10-01 01:14:28,898 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:28,898 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:28,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:28,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:14:28,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:30,430 INFO L134 CoverageAnalysis]: Checked inductivity of 17766 backedges. 0 proven. 17766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:30,430 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:30,430 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:30,437 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:14:30,562 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:14:30,562 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:30,568 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:30,930 INFO L134 CoverageAnalysis]: Checked inductivity of 17766 backedges. 0 proven. 17766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:30,950 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:30,951 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [190, 190] total 190 [2018-10-01 01:14:30,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 191 states [2018-10-01 01:14:30,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2018-10-01 01:14:30,954 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:30,954 INFO L87 Difference]: Start difference. First operand 192 states and 192 transitions. Second operand 191 states. [2018-10-01 01:14:33,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:33,276 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-10-01 01:14:33,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-10-01 01:14:33,276 INFO L78 Accepts]: Start accepts. Automaton has 191 states. Word has length 191 [2018-10-01 01:14:33,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:33,277 INFO L225 Difference]: With dead ends: 195 [2018-10-01 01:14:33,277 INFO L226 Difference]: Without dead ends: 193 [2018-10-01 01:14:33,277 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:14:33,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-10-01 01:14:33,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-10-01 01:14:33,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-10-01 01:14:33,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2018-10-01 01:14:33,281 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 191 [2018-10-01 01:14:33,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:33,281 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2018-10-01 01:14:33,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has 191 states. [2018-10-01 01:14:33,281 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2018-10-01 01:14:33,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-01 01:14:33,282 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:33,282 INFO L375 BasicCegarLoop]: trace histogram [189, 1, 1, 1] [2018-10-01 01:14:33,282 INFO L423 AbstractCegarLoop]: === Iteration 190 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:33,282 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:33,283 INFO L82 PathProgramCache]: Analyzing trace with hash 710166790, now seen corresponding path program 189 times [2018-10-01 01:14:33,283 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:33,283 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:33,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:33,283 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:33,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:34,992 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:34,993 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:34,993 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:35,002 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:14:35,295 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 96 check-sat command(s) [2018-10-01 01:14:35,295 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:35,301 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:35,696 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:35,744 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:35,745 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191] total 191 [2018-10-01 01:14:35,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-10-01 01:14:35,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-10-01 01:14:35,748 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:35,748 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 192 states. [2018-10-01 01:14:37,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:37,348 INFO L93 Difference]: Finished difference Result 196 states and 196 transitions. [2018-10-01 01:14:37,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-10-01 01:14:37,349 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 192 [2018-10-01 01:14:37,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:37,349 INFO L225 Difference]: With dead ends: 196 [2018-10-01 01:14:37,350 INFO L226 Difference]: Without dead ends: 194 [2018-10-01 01:14:37,350 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 01:14:37,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-10-01 01:14:37,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2018-10-01 01:14:37,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-10-01 01:14:37,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2018-10-01 01:14:37,352 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 192 [2018-10-01 01:14:37,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:37,352 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2018-10-01 01:14:37,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-10-01 01:14:37,353 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2018-10-01 01:14:37,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-10-01 01:14:37,353 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:37,353 INFO L375 BasicCegarLoop]: trace histogram [190, 1, 1, 1] [2018-10-01 01:14:37,353 INFO L423 AbstractCegarLoop]: === Iteration 191 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:37,353 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:37,354 INFO L82 PathProgramCache]: Analyzing trace with hash 540330144, now seen corresponding path program 190 times [2018-10-01 01:14:37,354 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:37,354 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:37,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:37,355 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:37,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:39,070 INFO L134 CoverageAnalysis]: Checked inductivity of 18145 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:39,070 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:39,070 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:39,078 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:14:39,218 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:14:39,218 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:39,225 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:39,626 INFO L134 CoverageAnalysis]: Checked inductivity of 18145 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:39,647 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:39,648 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192] total 192 [2018-10-01 01:14:39,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 193 states [2018-10-01 01:14:39,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2018-10-01 01:14:39,650 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:39,650 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand 193 states. [2018-10-01 01:14:42,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:42,535 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-10-01 01:14:42,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-10-01 01:14:42,536 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 193 [2018-10-01 01:14:42,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:42,536 INFO L225 Difference]: With dead ends: 197 [2018-10-01 01:14:42,536 INFO L226 Difference]: Without dead ends: 195 [2018-10-01 01:14:42,536 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 01:14:42,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-01 01:14:42,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-10-01 01:14:42,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-10-01 01:14:42,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-10-01 01:14:42,539 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 193 [2018-10-01 01:14:42,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:42,539 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-10-01 01:14:42,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has 193 states. [2018-10-01 01:14:42,539 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-10-01 01:14:42,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-01 01:14:42,540 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:42,540 INFO L375 BasicCegarLoop]: trace histogram [191, 1, 1, 1] [2018-10-01 01:14:42,540 INFO L423 AbstractCegarLoop]: === Iteration 192 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:42,540 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:42,540 INFO L82 PathProgramCache]: Analyzing trace with hash -429638586, now seen corresponding path program 191 times [2018-10-01 01:14:42,540 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:42,541 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:42,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:42,541 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:42,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:44,276 INFO L134 CoverageAnalysis]: Checked inductivity of 18336 backedges. 0 proven. 18336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:44,276 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:44,276 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:44,286 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:14:44,572 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 97 check-sat command(s) [2018-10-01 01:14:44,572 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:44,579 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:44,944 INFO L134 CoverageAnalysis]: Checked inductivity of 18336 backedges. 0 proven. 18336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:44,967 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:44,967 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193, 193] total 193 [2018-10-01 01:14:44,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-10-01 01:14:44,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-10-01 01:14:44,971 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:44,971 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 194 states. [2018-10-01 01:14:46,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:46,784 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions. [2018-10-01 01:14:46,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-10-01 01:14:46,785 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 194 [2018-10-01 01:14:46,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:46,785 INFO L225 Difference]: With dead ends: 198 [2018-10-01 01:14:46,785 INFO L226 Difference]: Without dead ends: 196 [2018-10-01 01:14:46,785 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 01:14:46,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-10-01 01:14:46,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2018-10-01 01:14:46,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-10-01 01:14:46,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 196 transitions. [2018-10-01 01:14:46,789 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 196 transitions. Word has length 194 [2018-10-01 01:14:46,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:46,789 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 196 transitions. [2018-10-01 01:14:46,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-10-01 01:14:46,789 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 196 transitions. [2018-10-01 01:14:46,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-10-01 01:14:46,790 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:46,790 INFO L375 BasicCegarLoop]: trace histogram [192, 1, 1, 1] [2018-10-01 01:14:46,790 INFO L423 AbstractCegarLoop]: === Iteration 193 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:46,791 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:46,791 INFO L82 PathProgramCache]: Analyzing trace with hash -433898144, now seen corresponding path program 192 times [2018-10-01 01:14:46,791 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:46,791 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:46,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:46,792 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:46,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:47,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:48,697 INFO L134 CoverageAnalysis]: Checked inductivity of 18528 backedges. 0 proven. 18528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:48,698 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:48,698 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:48,709 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:14:48,979 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 97 check-sat command(s) [2018-10-01 01:14:48,979 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:48,987 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:49,358 INFO L134 CoverageAnalysis]: Checked inductivity of 18528 backedges. 0 proven. 18528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:49,378 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:49,379 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [194, 194] total 194 [2018-10-01 01:14:49,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 195 states [2018-10-01 01:14:49,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2018-10-01 01:14:49,383 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:49,383 INFO L87 Difference]: Start difference. First operand 196 states and 196 transitions. Second operand 195 states. [2018-10-01 01:14:52,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:52,088 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-10-01 01:14:52,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-10-01 01:14:52,089 INFO L78 Accepts]: Start accepts. Automaton has 195 states. Word has length 195 [2018-10-01 01:14:52,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:52,089 INFO L225 Difference]: With dead ends: 199 [2018-10-01 01:14:52,089 INFO L226 Difference]: Without dead ends: 197 [2018-10-01 01:14:52,090 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 01:14:52,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-10-01 01:14:52,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-10-01 01:14:52,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-10-01 01:14:52,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-10-01 01:14:52,092 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 195 [2018-10-01 01:14:52,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:52,093 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-10-01 01:14:52,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has 195 states. [2018-10-01 01:14:52,093 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-10-01 01:14:52,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-01 01:14:52,093 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:52,093 INFO L375 BasicCegarLoop]: trace histogram [193, 1, 1, 1] [2018-10-01 01:14:52,093 INFO L423 AbstractCegarLoop]: === Iteration 194 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:52,094 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:52,094 INFO L82 PathProgramCache]: Analyzing trace with hash -565944442, now seen corresponding path program 193 times [2018-10-01 01:14:52,094 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:52,094 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:52,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:52,094 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:52,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:53,821 INFO L134 CoverageAnalysis]: Checked inductivity of 18721 backedges. 0 proven. 18721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:53,821 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:53,821 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:53,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:14:53,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:53,949 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:54,331 INFO L134 CoverageAnalysis]: Checked inductivity of 18721 backedges. 0 proven. 18721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:54,353 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:54,353 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195, 195] total 195 [2018-10-01 01:14:54,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-10-01 01:14:54,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-10-01 01:14:54,357 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:54,357 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 196 states. [2018-10-01 01:14:56,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:56,951 INFO L93 Difference]: Finished difference Result 200 states and 200 transitions. [2018-10-01 01:14:56,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-10-01 01:14:56,951 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 196 [2018-10-01 01:14:56,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:56,951 INFO L225 Difference]: With dead ends: 200 [2018-10-01 01:14:56,951 INFO L226 Difference]: Without dead ends: 198 [2018-10-01 01:14:56,952 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 01:14:56,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-10-01 01:14:56,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2018-10-01 01:14:56,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-10-01 01:14:56,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 198 transitions. [2018-10-01 01:14:56,954 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 198 transitions. Word has length 196 [2018-10-01 01:14:56,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:56,954 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 198 transitions. [2018-10-01 01:14:56,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-10-01 01:14:56,954 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 198 transitions. [2018-10-01 01:14:56,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-01 01:14:56,955 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:56,955 INFO L375 BasicCegarLoop]: trace histogram [194, 1, 1, 1] [2018-10-01 01:14:56,955 INFO L423 AbstractCegarLoop]: === Iteration 195 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:56,955 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:56,955 INFO L82 PathProgramCache]: Analyzing trace with hash -364412384, now seen corresponding path program 194 times [2018-10-01 01:14:56,955 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:56,955 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:56,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:56,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:14:56,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:58,746 INFO L134 CoverageAnalysis]: Checked inductivity of 18915 backedges. 0 proven. 18915 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:58,746 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:58,746 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:58,754 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:14:58,864 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:14:58,864 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:58,870 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:59,261 INFO L134 CoverageAnalysis]: Checked inductivity of 18915 backedges. 0 proven. 18915 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:59,282 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:59,282 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [196, 196] total 196 [2018-10-01 01:14:59,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 197 states [2018-10-01 01:14:59,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2018-10-01 01:14:59,285 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:59,285 INFO L87 Difference]: Start difference. First operand 198 states and 198 transitions. Second operand 197 states. [2018-10-01 01:15:01,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:01,136 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-10-01 01:15:01,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-10-01 01:15:01,136 INFO L78 Accepts]: Start accepts. Automaton has 197 states. Word has length 197 [2018-10-01 01:15:01,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:01,137 INFO L225 Difference]: With dead ends: 201 [2018-10-01 01:15:01,137 INFO L226 Difference]: Without dead ends: 199 [2018-10-01 01:15:01,137 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 01:15:01,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-10-01 01:15:01,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-10-01 01:15:01,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-01 01:15:01,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-10-01 01:15:01,140 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 197 [2018-10-01 01:15:01,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:01,140 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-10-01 01:15:01,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has 197 states. [2018-10-01 01:15:01,140 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-10-01 01:15:01,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-01 01:15:01,141 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:01,141 INFO L375 BasicCegarLoop]: trace histogram [195, 1, 1, 1] [2018-10-01 01:15:01,141 INFO L423 AbstractCegarLoop]: === Iteration 196 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:01,141 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:01,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1588114118, now seen corresponding path program 195 times [2018-10-01 01:15:01,141 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:01,141 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:01,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:01,142 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:15:01,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:02,788 INFO L134 CoverageAnalysis]: Checked inductivity of 19110 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:02,789 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:02,789 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:02,796 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:15:03,116 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 99 check-sat command(s) [2018-10-01 01:15:03,116 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:15:03,123 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:03,547 INFO L134 CoverageAnalysis]: Checked inductivity of 19110 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:03,568 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:03,568 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197, 197] total 197 [2018-10-01 01:15:03,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-10-01 01:15:03,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-10-01 01:15:03,571 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:03,572 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 198 states. [2018-10-01 01:15:06,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:06,727 INFO L93 Difference]: Finished difference Result 202 states and 202 transitions. [2018-10-01 01:15:06,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-10-01 01:15:06,727 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 198 [2018-10-01 01:15:06,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:06,728 INFO L225 Difference]: With dead ends: 202 [2018-10-01 01:15:06,728 INFO L226 Difference]: Without dead ends: 200 [2018-10-01 01:15:06,728 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 01:15:06,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-10-01 01:15:06,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2018-10-01 01:15:06,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-10-01 01:15:06,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 200 transitions. [2018-10-01 01:15:06,730 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 200 transitions. Word has length 198 [2018-10-01 01:15:06,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:06,731 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 200 transitions. [2018-10-01 01:15:06,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-10-01 01:15:06,731 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 200 transitions. [2018-10-01 01:15:06,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-10-01 01:15:06,731 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:06,731 INFO L375 BasicCegarLoop]: trace histogram [196, 1, 1, 1] [2018-10-01 01:15:06,731 INFO L423 AbstractCegarLoop]: === Iteration 197 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:06,732 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:06,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1986893536, now seen corresponding path program 196 times [2018-10-01 01:15:06,732 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:06,732 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:06,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:06,732 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:15:06,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:06,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:08,412 INFO L134 CoverageAnalysis]: Checked inductivity of 19306 backedges. 0 proven. 19306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:08,412 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:08,412 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:08,419 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:15:08,563 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:15:08,563 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:15:08,570 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:09,008 INFO L134 CoverageAnalysis]: Checked inductivity of 19306 backedges. 0 proven. 19306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:09,029 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:09,030 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [198, 198] total 198 [2018-10-01 01:15:09,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 199 states [2018-10-01 01:15:09,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2018-10-01 01:15:09,033 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:09,033 INFO L87 Difference]: Start difference. First operand 200 states and 200 transitions. Second operand 199 states. [2018-10-01 01:15:12,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:12,117 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-10-01 01:15:12,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-10-01 01:15:12,117 INFO L78 Accepts]: Start accepts. Automaton has 199 states. Word has length 199 [2018-10-01 01:15:12,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:12,118 INFO L225 Difference]: With dead ends: 203 [2018-10-01 01:15:12,118 INFO L226 Difference]: Without dead ends: 201 [2018-10-01 01:15:12,118 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 01:15:12,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-10-01 01:15:12,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-10-01 01:15:12,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-10-01 01:15:12,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2018-10-01 01:15:12,122 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 199 [2018-10-01 01:15:12,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:12,122 INFO L480 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2018-10-01 01:15:12,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has 199 states. [2018-10-01 01:15:12,123 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2018-10-01 01:15:12,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-01 01:15:12,123 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:12,123 INFO L375 BasicCegarLoop]: trace histogram [197, 1, 1, 1] [2018-10-01 01:15:12,124 INFO L423 AbstractCegarLoop]: === Iteration 198 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:12,124 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:12,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1464153606, now seen corresponding path program 197 times [2018-10-01 01:15:12,124 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:12,124 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:12,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:12,125 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:15:12,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:13,978 INFO L134 CoverageAnalysis]: Checked inductivity of 19503 backedges. 0 proven. 19503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:13,979 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:13,979 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:13,986 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:15:14,288 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 100 check-sat command(s) [2018-10-01 01:15:14,289 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:15:14,296 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:14,675 INFO L134 CoverageAnalysis]: Checked inductivity of 19503 backedges. 0 proven. 19503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:14,696 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:14,696 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199, 199] total 199 [2018-10-01 01:15:14,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-10-01 01:15:14,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-10-01 01:15:14,700 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:14,700 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand 200 states. [2018-10-01 01:15:16,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:16,657 INFO L93 Difference]: Finished difference Result 204 states and 204 transitions. [2018-10-01 01:15:16,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-10-01 01:15:16,658 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 200 [2018-10-01 01:15:16,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:16,658 INFO L225 Difference]: With dead ends: 204 [2018-10-01 01:15:16,658 INFO L226 Difference]: Without dead ends: 202 [2018-10-01 01:15:16,658 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 01:15:16,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-10-01 01:15:16,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2018-10-01 01:15:16,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-10-01 01:15:16,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2018-10-01 01:15:16,661 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 200 [2018-10-01 01:15:16,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:16,661 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2018-10-01 01:15:16,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-10-01 01:15:16,661 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2018-10-01 01:15:16,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-10-01 01:15:16,662 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:16,662 INFO L375 BasicCegarLoop]: trace histogram [198, 1, 1, 1] [2018-10-01 01:15:16,662 INFO L423 AbstractCegarLoop]: === Iteration 199 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:16,662 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:16,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1855882336, now seen corresponding path program 198 times [2018-10-01 01:15:16,662 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:16,662 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:16,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:16,663 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:15:16,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:18,375 INFO L134 CoverageAnalysis]: Checked inductivity of 19701 backedges. 0 proven. 19701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:18,375 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:18,375 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:18,403 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:15:18,683 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 100 check-sat command(s) [2018-10-01 01:15:18,683 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:15:18,691 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:19,162 INFO L134 CoverageAnalysis]: Checked inductivity of 19701 backedges. 0 proven. 19701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:19,183 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:19,184 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [200, 200] total 200 [2018-10-01 01:15:19,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 201 states [2018-10-01 01:15:19,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2018-10-01 01:15:19,187 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:19,187 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand 201 states. [2018-10-01 01:15:20,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:20,879 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-10-01 01:15:20,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-10-01 01:15:20,879 INFO L78 Accepts]: Start accepts. Automaton has 201 states. Word has length 201 [2018-10-01 01:15:20,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:20,880 INFO L225 Difference]: With dead ends: 205 [2018-10-01 01:15:20,880 INFO L226 Difference]: Without dead ends: 203 [2018-10-01 01:15:20,880 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 01:15:20,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-10-01 01:15:20,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-10-01 01:15:20,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-10-01 01:15:20,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-10-01 01:15:20,883 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 201 [2018-10-01 01:15:20,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:20,883 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-10-01 01:15:20,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 201 states. [2018-10-01 01:15:20,883 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-10-01 01:15:20,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-01 01:15:20,883 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:20,884 INFO L375 BasicCegarLoop]: trace histogram [199, 1, 1, 1] [2018-10-01 01:15:20,884 INFO L423 AbstractCegarLoop]: === Iteration 200 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:20,884 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:20,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1697781434, now seen corresponding path program 199 times [2018-10-01 01:15:20,884 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:20,884 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:20,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:20,885 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:15:20,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:21,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:22,568 INFO L134 CoverageAnalysis]: Checked inductivity of 19900 backedges. 0 proven. 19900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:22,568 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:22,568 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:22,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:15:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:22,692 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:23,072 INFO L134 CoverageAnalysis]: Checked inductivity of 19900 backedges. 0 proven. 19900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:23,093 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:23,093 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201, 201] total 201 [2018-10-01 01:15:23,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-10-01 01:15:23,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-10-01 01:15:23,097 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:23,097 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 202 states. [2018-10-01 01:15:25,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:25,113 INFO L93 Difference]: Finished difference Result 206 states and 206 transitions. [2018-10-01 01:15:25,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-10-01 01:15:25,113 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 202 [2018-10-01 01:15:25,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:25,114 INFO L225 Difference]: With dead ends: 206 [2018-10-01 01:15:25,114 INFO L226 Difference]: Without dead ends: 204 [2018-10-01 01:15:25,114 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 01:15:25,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-10-01 01:15:25,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2018-10-01 01:15:25,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-10-01 01:15:25,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 204 transitions. [2018-10-01 01:15:25,116 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 204 transitions. Word has length 202 [2018-10-01 01:15:25,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:25,117 INFO L480 AbstractCegarLoop]: Abstraction has 204 states and 204 transitions. [2018-10-01 01:15:25,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-10-01 01:15:25,117 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 204 transitions. [2018-10-01 01:15:25,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-10-01 01:15:25,117 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:25,117 INFO L375 BasicCegarLoop]: trace histogram [200, 1, 1, 1] [2018-10-01 01:15:25,118 INFO L423 AbstractCegarLoop]: === Iteration 201 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:25,118 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:25,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1091620768, now seen corresponding path program 200 times [2018-10-01 01:15:25,118 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:25,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:25,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:25,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:15:25,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:26,810 INFO L134 CoverageAnalysis]: Checked inductivity of 20100 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:26,810 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:26,810 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:26,817 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:15:26,931 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:15:26,931 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:15:26,937 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:27,320 INFO L134 CoverageAnalysis]: Checked inductivity of 20100 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:27,342 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:27,342 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [202, 202] total 202 [2018-10-01 01:15:27,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 203 states [2018-10-01 01:15:27,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2018-10-01 01:15:27,347 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:27,347 INFO L87 Difference]: Start difference. First operand 204 states and 204 transitions. Second operand 203 states. [2018-10-01 01:15:29,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:29,835 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-10-01 01:15:29,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-10-01 01:15:29,836 INFO L78 Accepts]: Start accepts. Automaton has 203 states. Word has length 203 [2018-10-01 01:15:29,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:29,836 INFO L225 Difference]: With dead ends: 207 [2018-10-01 01:15:29,836 INFO L226 Difference]: Without dead ends: 205 [2018-10-01 01:15:29,836 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 01:15:29,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-10-01 01:15:29,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-10-01 01:15:29,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-10-01 01:15:29,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 205 transitions. [2018-10-01 01:15:29,839 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 205 transitions. Word has length 203 [2018-10-01 01:15:29,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:29,839 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 205 transitions. [2018-10-01 01:15:29,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has 203 states. [2018-10-01 01:15:29,839 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 205 transitions. [2018-10-01 01:15:29,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-10-01 01:15:29,840 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:29,840 INFO L375 BasicCegarLoop]: trace histogram [201, 1, 1, 1] [2018-10-01 01:15:29,840 INFO L423 AbstractCegarLoop]: === Iteration 202 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:29,840 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:29,840 INFO L82 PathProgramCache]: Analyzing trace with hash 519490694, now seen corresponding path program 201 times [2018-10-01 01:15:29,840 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:29,840 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:29,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:29,841 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:15:29,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:30,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:31,584 INFO L134 CoverageAnalysis]: Checked inductivity of 20301 backedges. 0 proven. 20301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:31,584 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:31,585 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:31,592 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:15:31,931 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 102 check-sat command(s) [2018-10-01 01:15:31,932 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:15:31,938 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:32,322 INFO L134 CoverageAnalysis]: Checked inductivity of 20301 backedges. 0 proven. 20301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:32,344 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:32,344 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203, 203] total 203 [2018-10-01 01:15:32,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-10-01 01:15:32,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-10-01 01:15:32,348 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:32,348 INFO L87 Difference]: Start difference. First operand 205 states and 205 transitions. Second operand 204 states. [2018-10-01 01:15:35,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:35,332 INFO L93 Difference]: Finished difference Result 208 states and 208 transitions. [2018-10-01 01:15:35,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-10-01 01:15:35,334 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 204 [2018-10-01 01:15:35,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:35,334 INFO L225 Difference]: With dead ends: 208 [2018-10-01 01:15:35,334 INFO L226 Difference]: Without dead ends: 206 [2018-10-01 01:15:35,335 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 01:15:35,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-10-01 01:15:35,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2018-10-01 01:15:35,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-10-01 01:15:35,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 206 transitions. [2018-10-01 01:15:35,338 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 206 transitions. Word has length 204 [2018-10-01 01:15:35,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:35,338 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 206 transitions. [2018-10-01 01:15:35,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-10-01 01:15:35,338 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 206 transitions. [2018-10-01 01:15:35,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-10-01 01:15:35,339 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:35,339 INFO L375 BasicCegarLoop]: trace histogram [202, 1, 1, 1] [2018-10-01 01:15:35,339 INFO L423 AbstractCegarLoop]: === Iteration 203 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:35,339 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:35,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1075661536, now seen corresponding path program 202 times [2018-10-01 01:15:35,339 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:35,340 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:35,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:35,340 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:15:35,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:37,120 INFO L134 CoverageAnalysis]: Checked inductivity of 20503 backedges. 0 proven. 20503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:37,121 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:37,121 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:37,129 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:15:37,280 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:15:37,281 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:15:37,288 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:37,674 INFO L134 CoverageAnalysis]: Checked inductivity of 20503 backedges. 0 proven. 20503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:37,695 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:37,695 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [204, 204] total 204 [2018-10-01 01:15:37,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 205 states [2018-10-01 01:15:37,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2018-10-01 01:15:37,699 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:37,699 INFO L87 Difference]: Start difference. First operand 206 states and 206 transitions. Second operand 205 states. [2018-10-01 01:15:40,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:40,743 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-10-01 01:15:40,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-10-01 01:15:40,743 INFO L78 Accepts]: Start accepts. Automaton has 205 states. Word has length 205 [2018-10-01 01:15:40,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:40,744 INFO L225 Difference]: With dead ends: 209 [2018-10-01 01:15:40,744 INFO L226 Difference]: Without dead ends: 207 [2018-10-01 01:15:40,744 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 01:15:40,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-10-01 01:15:40,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-10-01 01:15:40,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-10-01 01:15:40,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-10-01 01:15:40,747 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 205 [2018-10-01 01:15:40,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:40,747 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-10-01 01:15:40,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has 205 states. [2018-10-01 01:15:40,747 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-10-01 01:15:40,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-01 01:15:40,748 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:40,748 INFO L375 BasicCegarLoop]: trace histogram [203, 1, 1, 1] [2018-10-01 01:15:40,748 INFO L423 AbstractCegarLoop]: === Iteration 204 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:40,749 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:40,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1014226886, now seen corresponding path program 203 times [2018-10-01 01:15:40,749 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:40,749 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:40,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:40,749 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:15:40,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:41,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:42,539 INFO L134 CoverageAnalysis]: Checked inductivity of 20706 backedges. 0 proven. 20706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:42,539 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:42,539 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:42,547 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:15:42,883 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 103 check-sat command(s) [2018-10-01 01:15:42,883 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:15:42,892 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:43,273 INFO L134 CoverageAnalysis]: Checked inductivity of 20706 backedges. 0 proven. 20706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:43,294 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:43,294 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205, 205] total 205 [2018-10-01 01:15:43,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-10-01 01:15:43,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-10-01 01:15:43,298 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:43,298 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 206 states. [2018-10-01 01:15:46,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:46,134 INFO L93 Difference]: Finished difference Result 210 states and 210 transitions. [2018-10-01 01:15:46,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-10-01 01:15:46,135 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 206 [2018-10-01 01:15:46,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:46,135 INFO L225 Difference]: With dead ends: 210 [2018-10-01 01:15:46,135 INFO L226 Difference]: Without dead ends: 208 [2018-10-01 01:15:46,135 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 01:15:46,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-10-01 01:15:46,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2018-10-01 01:15:46,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-10-01 01:15:46,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 208 transitions. [2018-10-01 01:15:46,138 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 208 transitions. Word has length 206 [2018-10-01 01:15:46,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:46,138 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 208 transitions. [2018-10-01 01:15:46,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-10-01 01:15:46,138 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 208 transitions. [2018-10-01 01:15:46,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-10-01 01:15:46,139 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:46,139 INFO L375 BasicCegarLoop]: trace histogram [204, 1, 1, 1] [2018-10-01 01:15:46,139 INFO L423 AbstractCegarLoop]: === Iteration 205 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:46,139 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:46,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1376258528, now seen corresponding path program 204 times [2018-10-01 01:15:46,139 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:46,140 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:46,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:46,140 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:15:46,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:46,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:47,899 INFO L134 CoverageAnalysis]: Checked inductivity of 20910 backedges. 0 proven. 20910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:47,899 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:47,899 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:47,908 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:15:48,202 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2018-10-01 01:15:48,203 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:15:48,210 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:48,596 INFO L134 CoverageAnalysis]: Checked inductivity of 20910 backedges. 0 proven. 20910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:48,618 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:48,618 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [206, 206] total 206 [2018-10-01 01:15:48,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 207 states [2018-10-01 01:15:48,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2018-10-01 01:15:48,622 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:48,622 INFO L87 Difference]: Start difference. First operand 208 states and 208 transitions. Second operand 207 states. [2018-10-01 01:15:51,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:51,996 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-10-01 01:15:51,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-10-01 01:15:51,996 INFO L78 Accepts]: Start accepts. Automaton has 207 states. Word has length 207 [2018-10-01 01:15:51,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:51,997 INFO L225 Difference]: With dead ends: 211 [2018-10-01 01:15:51,997 INFO L226 Difference]: Without dead ends: 209 [2018-10-01 01:15:51,997 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 01:15:51,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-10-01 01:15:51,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-10-01 01:15:51,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-10-01 01:15:52,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2018-10-01 01:15:52,000 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 207 [2018-10-01 01:15:52,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:52,000 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2018-10-01 01:15:52,000 INFO L481 AbstractCegarLoop]: Interpolant automaton has 207 states. [2018-10-01 01:15:52,000 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2018-10-01 01:15:52,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-01 01:15:52,001 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:52,001 INFO L375 BasicCegarLoop]: trace histogram [205, 1, 1, 1] [2018-10-01 01:15:52,001 INFO L423 AbstractCegarLoop]: === Iteration 206 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:52,001 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:52,001 INFO L82 PathProgramCache]: Analyzing trace with hash -285662458, now seen corresponding path program 205 times [2018-10-01 01:15:52,001 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:52,001 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:52,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:52,002 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:15:52,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:53,751 INFO L134 CoverageAnalysis]: Checked inductivity of 21115 backedges. 0 proven. 21115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:53,751 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:53,751 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:53,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:15:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:53,920 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:54,352 INFO L134 CoverageAnalysis]: Checked inductivity of 21115 backedges. 0 proven. 21115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:54,373 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:54,374 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207, 207] total 207 [2018-10-01 01:15:54,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-10-01 01:15:54,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-10-01 01:15:54,377 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:54,377 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand 208 states. [2018-10-01 01:15:57,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:57,457 INFO L93 Difference]: Finished difference Result 212 states and 212 transitions. [2018-10-01 01:15:57,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-10-01 01:15:57,457 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 208 [2018-10-01 01:15:57,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:57,458 INFO L225 Difference]: With dead ends: 212 [2018-10-01 01:15:57,458 INFO L226 Difference]: Without dead ends: 210 [2018-10-01 01:15:57,458 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 01:15:57,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-10-01 01:15:57,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2018-10-01 01:15:57,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-10-01 01:15:57,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 210 transitions. [2018-10-01 01:15:57,463 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 210 transitions. Word has length 208 [2018-10-01 01:15:57,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:57,463 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 210 transitions. [2018-10-01 01:15:57,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-10-01 01:15:57,464 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 210 transitions. [2018-10-01 01:15:57,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-10-01 01:15:57,464 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:57,465 INFO L375 BasicCegarLoop]: trace histogram [206, 1, 1, 1] [2018-10-01 01:15:57,465 INFO L423 AbstractCegarLoop]: === Iteration 207 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:57,465 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:57,465 INFO L82 PathProgramCache]: Analyzing trace with hash -265605472, now seen corresponding path program 206 times [2018-10-01 01:15:57,465 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:57,465 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:57,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:57,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:15:57,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:59,889 INFO L134 CoverageAnalysis]: Checked inductivity of 21321 backedges. 0 proven. 21321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:59,890 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:59,890 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:59,897 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:16:00,019 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:16:00,019 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:16:00,025 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:00,425 INFO L134 CoverageAnalysis]: Checked inductivity of 21321 backedges. 0 proven. 21321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:00,447 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:00,447 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [208, 208] total 208 [2018-10-01 01:16:00,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 209 states [2018-10-01 01:16:00,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2018-10-01 01:16:00,450 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:00,450 INFO L87 Difference]: Start difference. First operand 210 states and 210 transitions. Second operand 209 states. [2018-10-01 01:16:02,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:02,727 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-10-01 01:16:02,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-10-01 01:16:02,727 INFO L78 Accepts]: Start accepts. Automaton has 209 states. Word has length 209 [2018-10-01 01:16:02,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:02,727 INFO L225 Difference]: With dead ends: 213 [2018-10-01 01:16:02,727 INFO L226 Difference]: Without dead ends: 211 [2018-10-01 01:16:02,728 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 01:16:02,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-10-01 01:16:02,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-10-01 01:16:02,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-10-01 01:16:02,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-10-01 01:16:02,730 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 209 [2018-10-01 01:16:02,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:02,730 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-10-01 01:16:02,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has 209 states. [2018-10-01 01:16:02,731 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-10-01 01:16:02,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-01 01:16:02,731 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:02,731 INFO L375 BasicCegarLoop]: trace histogram [207, 1, 1, 1] [2018-10-01 01:16:02,731 INFO L423 AbstractCegarLoop]: === Iteration 208 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:02,732 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:02,732 INFO L82 PathProgramCache]: Analyzing trace with hash 356161094, now seen corresponding path program 207 times [2018-10-01 01:16:02,732 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:02,732 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:02,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:02,732 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:16:02,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:03,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:04,616 INFO L134 CoverageAnalysis]: Checked inductivity of 21528 backedges. 0 proven. 21528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:04,616 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:04,616 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:04,624 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:16:04,983 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 105 check-sat command(s) [2018-10-01 01:16:04,983 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:16:04,990 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:05,392 INFO L134 CoverageAnalysis]: Checked inductivity of 21528 backedges. 0 proven. 21528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:05,413 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:05,413 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [209, 209] total 209 [2018-10-01 01:16:05,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-10-01 01:16:05,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-10-01 01:16:05,417 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:05,417 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 210 states. [2018-10-01 01:16:07,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:07,276 INFO L93 Difference]: Finished difference Result 214 states and 214 transitions. [2018-10-01 01:16:07,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-10-01 01:16:07,276 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 210 [2018-10-01 01:16:07,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:07,277 INFO L225 Difference]: With dead ends: 214 [2018-10-01 01:16:07,277 INFO L226 Difference]: Without dead ends: 212 [2018-10-01 01:16:07,277 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 01:16:07,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-10-01 01:16:07,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2018-10-01 01:16:07,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-10-01 01:16:07,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 212 transitions. [2018-10-01 01:16:07,281 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 212 transitions. Word has length 210 [2018-10-01 01:16:07,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:07,281 INFO L480 AbstractCegarLoop]: Abstraction has 212 states and 212 transitions. [2018-10-01 01:16:07,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-10-01 01:16:07,281 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 212 transitions. [2018-10-01 01:16:07,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-10-01 01:16:07,281 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:07,282 INFO L375 BasicCegarLoop]: trace histogram [208, 1, 1, 1] [2018-10-01 01:16:07,282 INFO L423 AbstractCegarLoop]: === Iteration 209 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:07,282 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:07,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1843911840, now seen corresponding path program 208 times [2018-10-01 01:16:07,282 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:07,282 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:07,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:07,283 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:16:07,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:09,184 INFO L134 CoverageAnalysis]: Checked inductivity of 21736 backedges. 0 proven. 21736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:09,184 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:09,184 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:09,191 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:16:09,345 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:16:09,345 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:16:09,353 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:09,752 INFO L134 CoverageAnalysis]: Checked inductivity of 21736 backedges. 0 proven. 21736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:09,774 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:09,774 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [210, 210] total 210 [2018-10-01 01:16:09,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 211 states [2018-10-01 01:16:09,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 211 interpolants. [2018-10-01 01:16:09,778 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:09,778 INFO L87 Difference]: Start difference. First operand 212 states and 212 transitions. Second operand 211 states. [2018-10-01 01:16:12,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:12,165 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2018-10-01 01:16:12,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2018-10-01 01:16:12,165 INFO L78 Accepts]: Start accepts. Automaton has 211 states. Word has length 211 [2018-10-01 01:16:12,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:12,165 INFO L225 Difference]: With dead ends: 215 [2018-10-01 01:16:12,165 INFO L226 Difference]: Without dead ends: 213 [2018-10-01 01:16:12,166 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 01:16:12,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-10-01 01:16:12,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-10-01 01:16:12,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-10-01 01:16:12,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2018-10-01 01:16:12,168 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 211 [2018-10-01 01:16:12,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:12,169 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2018-10-01 01:16:12,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has 211 states. [2018-10-01 01:16:12,169 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2018-10-01 01:16:12,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-01 01:16:12,169 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:12,169 INFO L375 BasicCegarLoop]: trace histogram [209, 1, 1, 1] [2018-10-01 01:16:12,169 INFO L423 AbstractCegarLoop]: === Iteration 210 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:12,170 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:12,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1326696058, now seen corresponding path program 209 times [2018-10-01 01:16:12,170 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:12,170 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:12,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:12,170 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:16:12,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:12,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:14,080 INFO L134 CoverageAnalysis]: Checked inductivity of 21945 backedges. 0 proven. 21945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:14,080 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:14,080 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:14,087 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:16:14,429 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 106 check-sat command(s) [2018-10-01 01:16:14,430 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:16:14,438 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:14,840 INFO L134 CoverageAnalysis]: Checked inductivity of 21945 backedges. 0 proven. 21945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:14,861 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:14,861 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211, 211] total 211 [2018-10-01 01:16:14,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-10-01 01:16:14,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-10-01 01:16:14,864 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:14,865 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand 212 states. [2018-10-01 01:16:18,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:18,524 INFO L93 Difference]: Finished difference Result 216 states and 216 transitions. [2018-10-01 01:16:18,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-10-01 01:16:18,525 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 212 [2018-10-01 01:16:18,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:18,525 INFO L225 Difference]: With dead ends: 216 [2018-10-01 01:16:18,525 INFO L226 Difference]: Without dead ends: 214 [2018-10-01 01:16:18,525 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 01:16:18,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-10-01 01:16:18,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2018-10-01 01:16:18,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-10-01 01:16:18,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 214 transitions. [2018-10-01 01:16:18,528 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 214 transitions. Word has length 212 [2018-10-01 01:16:18,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:18,528 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 214 transitions. [2018-10-01 01:16:18,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-10-01 01:16:18,528 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 214 transitions. [2018-10-01 01:16:18,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-10-01 01:16:18,529 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:18,529 INFO L375 BasicCegarLoop]: trace histogram [210, 1, 1, 1] [2018-10-01 01:16:18,529 INFO L423 AbstractCegarLoop]: === Iteration 211 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:18,529 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:18,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1822091296, now seen corresponding path program 210 times [2018-10-01 01:16:18,530 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:18,530 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:18,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:18,530 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:16:18,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:20,578 INFO L134 CoverageAnalysis]: Checked inductivity of 22155 backedges. 0 proven. 22155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:20,579 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:20,579 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:20,586 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:16:20,904 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 106 check-sat command(s) [2018-10-01 01:16:20,904 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:16:20,913 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:21,312 INFO L134 CoverageAnalysis]: Checked inductivity of 22155 backedges. 0 proven. 22155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:21,333 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:21,334 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [212, 212] total 212 [2018-10-01 01:16:21,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 213 states [2018-10-01 01:16:21,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2018-10-01 01:16:21,337 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:21,337 INFO L87 Difference]: Start difference. First operand 214 states and 214 transitions. Second operand 213 states. [2018-10-01 01:16:24,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:24,877 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-10-01 01:16:24,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-10-01 01:16:24,878 INFO L78 Accepts]: Start accepts. Automaton has 213 states. Word has length 213 [2018-10-01 01:16:24,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:24,878 INFO L225 Difference]: With dead ends: 217 [2018-10-01 01:16:24,878 INFO L226 Difference]: Without dead ends: 215 [2018-10-01 01:16:24,879 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 01:16:24,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-10-01 01:16:24,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-10-01 01:16:24,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-10-01 01:16:24,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-10-01 01:16:24,882 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 213 [2018-10-01 01:16:24,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:24,882 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-10-01 01:16:24,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has 213 states. [2018-10-01 01:16:24,882 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-10-01 01:16:24,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-01 01:16:24,883 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:24,883 INFO L375 BasicCegarLoop]: trace histogram [211, 1, 1, 1] [2018-10-01 01:16:24,883 INFO L423 AbstractCegarLoop]: === Iteration 212 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:24,883 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:24,884 INFO L82 PathProgramCache]: Analyzing trace with hash 650251462, now seen corresponding path program 211 times [2018-10-01 01:16:24,884 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:24,884 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:24,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:24,884 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:16:24,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:25,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:26,916 INFO L134 CoverageAnalysis]: Checked inductivity of 22366 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:26,916 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:26,916 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:26,924 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:16:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:27,052 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:27,463 INFO L134 CoverageAnalysis]: Checked inductivity of 22366 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:27,484 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:27,484 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [213, 213] total 213 [2018-10-01 01:16:27,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 214 states [2018-10-01 01:16:27,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2018-10-01 01:16:27,487 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:27,488 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 214 states. [2018-10-01 01:16:29,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:29,773 INFO L93 Difference]: Finished difference Result 218 states and 218 transitions. [2018-10-01 01:16:29,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2018-10-01 01:16:29,774 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 214 [2018-10-01 01:16:29,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:29,774 INFO L225 Difference]: With dead ends: 218 [2018-10-01 01:16:29,774 INFO L226 Difference]: Without dead ends: 216 [2018-10-01 01:16:29,774 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 01:16:29,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-10-01 01:16:29,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2018-10-01 01:16:29,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-10-01 01:16:29,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 216 transitions. [2018-10-01 01:16:29,777 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 216 transitions. Word has length 214 [2018-10-01 01:16:29,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:29,777 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 216 transitions. [2018-10-01 01:16:29,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 214 states. [2018-10-01 01:16:29,777 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 216 transitions. [2018-10-01 01:16:29,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-10-01 01:16:29,777 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:29,778 INFO L375 BasicCegarLoop]: trace histogram [212, 1, 1, 1] [2018-10-01 01:16:29,778 INFO L423 AbstractCegarLoop]: === Iteration 213 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:29,778 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:29,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1317045024, now seen corresponding path program 212 times [2018-10-01 01:16:29,778 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:29,778 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:29,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:29,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:16:29,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:30,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:31,874 INFO L134 CoverageAnalysis]: Checked inductivity of 22578 backedges. 0 proven. 22578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:31,874 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:31,874 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:31,882 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:16:32,004 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:16:32,004 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:16:32,010 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:32,426 INFO L134 CoverageAnalysis]: Checked inductivity of 22578 backedges. 0 proven. 22578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:32,447 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:32,447 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [214, 214] total 214 [2018-10-01 01:16:32,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 215 states [2018-10-01 01:16:32,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2018-10-01 01:16:32,451 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:32,451 INFO L87 Difference]: Start difference. First operand 216 states and 216 transitions. Second operand 215 states. [2018-10-01 01:16:35,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:35,901 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-10-01 01:16:35,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2018-10-01 01:16:35,901 INFO L78 Accepts]: Start accepts. Automaton has 215 states. Word has length 215 [2018-10-01 01:16:35,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:35,902 INFO L225 Difference]: With dead ends: 219 [2018-10-01 01:16:35,902 INFO L226 Difference]: Without dead ends: 217 [2018-10-01 01:16:35,902 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 01:16:35,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-10-01 01:16:35,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-10-01 01:16:35,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-10-01 01:16:35,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 217 transitions. [2018-10-01 01:16:35,905 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 217 transitions. Word has length 215 [2018-10-01 01:16:35,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:35,905 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 217 transitions. [2018-10-01 01:16:35,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has 215 states. [2018-10-01 01:16:35,905 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 217 transitions. [2018-10-01 01:16:35,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-01 01:16:35,905 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:35,906 INFO L375 BasicCegarLoop]: trace histogram [213, 1, 1, 1] [2018-10-01 01:16:35,906 INFO L423 AbstractCegarLoop]: === Iteration 214 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:35,906 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:35,906 INFO L82 PathProgramCache]: Analyzing trace with hash 2121273350, now seen corresponding path program 213 times [2018-10-01 01:16:35,906 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:35,906 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:35,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:35,906 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:16:35,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:36,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:37,894 INFO L134 CoverageAnalysis]: Checked inductivity of 22791 backedges. 0 proven. 22791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:37,894 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:37,895 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:37,902 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:16:38,286 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 108 check-sat command(s) [2018-10-01 01:16:38,287 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:16:38,294 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:38,695 INFO L134 CoverageAnalysis]: Checked inductivity of 22791 backedges. 0 proven. 22791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:38,716 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:38,717 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [215, 215] total 215 [2018-10-01 01:16:38,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-10-01 01:16:38,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-10-01 01:16:38,721 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:38,721 INFO L87 Difference]: Start difference. First operand 217 states and 217 transitions. Second operand 216 states. [2018-10-01 01:16:41,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:41,535 INFO L93 Difference]: Finished difference Result 220 states and 220 transitions. [2018-10-01 01:16:41,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2018-10-01 01:16:41,535 INFO L78 Accepts]: Start accepts. Automaton has 216 states. Word has length 216 [2018-10-01 01:16:41,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:41,536 INFO L225 Difference]: With dead ends: 220 [2018-10-01 01:16:41,536 INFO L226 Difference]: Without dead ends: 218 [2018-10-01 01:16:41,536 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 01:16:41,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-10-01 01:16:41,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2018-10-01 01:16:41,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-10-01 01:16:41,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 218 transitions. [2018-10-01 01:16:41,565 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 218 transitions. Word has length 216 [2018-10-01 01:16:41,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:41,566 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 218 transitions. [2018-10-01 01:16:41,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has 216 states. [2018-10-01 01:16:41,566 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 218 transitions. [2018-10-01 01:16:41,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-10-01 01:16:41,567 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:41,567 INFO L375 BasicCegarLoop]: trace histogram [214, 1, 1, 1] [2018-10-01 01:16:41,567 INFO L423 AbstractCegarLoop]: === Iteration 215 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:41,568 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:41,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1334960544, now seen corresponding path program 214 times [2018-10-01 01:16:41,568 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:41,568 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:41,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:41,569 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:16:41,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:43,535 INFO L134 CoverageAnalysis]: Checked inductivity of 23005 backedges. 0 proven. 23005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:43,535 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:43,535 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:43,543 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:16:43,712 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:16:43,712 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:16:43,719 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:44,167 INFO L134 CoverageAnalysis]: Checked inductivity of 23005 backedges. 0 proven. 23005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:44,189 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:44,189 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [216, 216] total 216 [2018-10-01 01:16:44,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 217 states [2018-10-01 01:16:44,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 217 interpolants. [2018-10-01 01:16:44,192 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:44,192 INFO L87 Difference]: Start difference. First operand 218 states and 218 transitions. Second operand 217 states. [2018-10-01 01:16:46,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:46,585 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-10-01 01:16:46,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2018-10-01 01:16:46,585 INFO L78 Accepts]: Start accepts. Automaton has 217 states. Word has length 217 [2018-10-01 01:16:46,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:46,585 INFO L225 Difference]: With dead ends: 221 [2018-10-01 01:16:46,585 INFO L226 Difference]: Without dead ends: 219 [2018-10-01 01:16:46,586 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 01:16:46,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-10-01 01:16:46,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-10-01 01:16:46,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-10-01 01:16:46,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-10-01 01:16:46,589 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 217 [2018-10-01 01:16:46,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:46,590 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-10-01 01:16:46,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has 217 states. [2018-10-01 01:16:46,590 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-10-01 01:16:46,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-01 01:16:46,591 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:46,591 INFO L375 BasicCegarLoop]: trace histogram [215, 1, 1, 1] [2018-10-01 01:16:46,591 INFO L423 AbstractCegarLoop]: === Iteration 216 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:46,591 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:46,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1565899962, now seen corresponding path program 215 times [2018-10-01 01:16:46,591 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:46,591 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:46,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:46,592 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:16:46,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:46,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:48,613 INFO L134 CoverageAnalysis]: Checked inductivity of 23220 backedges. 0 proven. 23220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:48,614 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:48,614 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:48,622 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:16:48,976 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 109 check-sat command(s) [2018-10-01 01:16:48,976 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:16:48,985 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:49,413 INFO L134 CoverageAnalysis]: Checked inductivity of 23220 backedges. 0 proven. 23220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:49,434 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:49,434 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [217, 217] total 217 [2018-10-01 01:16:49,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 218 states [2018-10-01 01:16:49,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 218 interpolants. [2018-10-01 01:16:49,438 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:49,438 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 218 states. [2018-10-01 01:16:52,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:52,601 INFO L93 Difference]: Finished difference Result 222 states and 222 transitions. [2018-10-01 01:16:52,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2018-10-01 01:16:52,602 INFO L78 Accepts]: Start accepts. Automaton has 218 states. Word has length 218 [2018-10-01 01:16:52,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:52,602 INFO L225 Difference]: With dead ends: 222 [2018-10-01 01:16:52,602 INFO L226 Difference]: Without dead ends: 220 [2018-10-01 01:16:52,602 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 01:16:52,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-10-01 01:16:52,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2018-10-01 01:16:52,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-10-01 01:16:52,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 220 transitions. [2018-10-01 01:16:52,605 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 220 transitions. Word has length 218 [2018-10-01 01:16:52,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:52,605 INFO L480 AbstractCegarLoop]: Abstraction has 220 states and 220 transitions. [2018-10-01 01:16:52,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has 218 states. [2018-10-01 01:16:52,605 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 220 transitions. [2018-10-01 01:16:52,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-10-01 01:16:52,606 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:52,606 INFO L375 BasicCegarLoop]: trace histogram [216, 1, 1, 1] [2018-10-01 01:16:52,606 INFO L423 AbstractCegarLoop]: === Iteration 217 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:52,606 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:52,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1298262432, now seen corresponding path program 216 times [2018-10-01 01:16:52,606 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:52,606 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:52,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:52,607 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:16:52,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:54,670 INFO L134 CoverageAnalysis]: Checked inductivity of 23436 backedges. 0 proven. 23436 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:54,670 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:54,670 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:54,678 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:16:55,003 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 109 check-sat command(s) [2018-10-01 01:16:55,004 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:16:55,013 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:55,428 INFO L134 CoverageAnalysis]: Checked inductivity of 23436 backedges. 0 proven. 23436 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:55,449 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:55,449 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [218, 218] total 218 [2018-10-01 01:16:55,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 219 states [2018-10-01 01:16:55,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 219 interpolants. [2018-10-01 01:16:55,453 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:55,454 INFO L87 Difference]: Start difference. First operand 220 states and 220 transitions. Second operand 219 states. [2018-10-01 01:16:58,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:58,401 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-10-01 01:16:58,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2018-10-01 01:16:58,402 INFO L78 Accepts]: Start accepts. Automaton has 219 states. Word has length 219 [2018-10-01 01:16:58,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:58,402 INFO L225 Difference]: With dead ends: 223 [2018-10-01 01:16:58,402 INFO L226 Difference]: Without dead ends: 221 [2018-10-01 01:16:58,402 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 01:16:58,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-10-01 01:16:58,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-10-01 01:16:58,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-10-01 01:16:58,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2018-10-01 01:16:58,405 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 219 [2018-10-01 01:16:58,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:58,405 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2018-10-01 01:16:58,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has 219 states. [2018-10-01 01:16:58,405 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2018-10-01 01:16:58,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-01 01:16:58,406 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:58,406 INFO L375 BasicCegarLoop]: trace histogram [217, 1, 1, 1] [2018-10-01 01:16:58,406 INFO L423 AbstractCegarLoop]: === Iteration 218 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:58,406 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:58,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1591433594, now seen corresponding path program 217 times [2018-10-01 01:16:58,406 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:58,406 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:58,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:58,407 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:16:58,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:17:00,464 INFO L134 CoverageAnalysis]: Checked inductivity of 23653 backedges. 0 proven. 23653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:00,464 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:17:00,464 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:17:00,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:17:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:17:00,605 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:17:01,081 INFO L134 CoverageAnalysis]: Checked inductivity of 23653 backedges. 0 proven. 23653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:01,102 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:17:01,102 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [219, 219] total 219 [2018-10-01 01:17:01,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 220 states [2018-10-01 01:17:01,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2018-10-01 01:17:01,105 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:17:01,106 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 220 states. [2018-10-01 01:17:04,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:17:04,398 INFO L93 Difference]: Finished difference Result 224 states and 224 transitions. [2018-10-01 01:17:04,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2018-10-01 01:17:04,398 INFO L78 Accepts]: Start accepts. Automaton has 220 states. Word has length 220 [2018-10-01 01:17:04,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:17:04,399 INFO L225 Difference]: With dead ends: 224 [2018-10-01 01:17:04,399 INFO L226 Difference]: Without dead ends: 222 [2018-10-01 01:17:04,399 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 01:17:04,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-10-01 01:17:04,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2018-10-01 01:17:04,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-10-01 01:17:04,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 222 transitions. [2018-10-01 01:17:04,403 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 222 transitions. Word has length 220 [2018-10-01 01:17:04,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:17:04,403 INFO L480 AbstractCegarLoop]: Abstraction has 222 states and 222 transitions. [2018-10-01 01:17:04,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has 220 states. [2018-10-01 01:17:04,403 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 222 transitions. [2018-10-01 01:17:04,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-10-01 01:17:04,404 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:17:04,404 INFO L375 BasicCegarLoop]: trace histogram [218, 1, 1, 1] [2018-10-01 01:17:04,404 INFO L423 AbstractCegarLoop]: === Iteration 219 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:17:04,405 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:17:04,405 INFO L82 PathProgramCache]: Analyzing trace with hash -2089805024, now seen corresponding path program 218 times [2018-10-01 01:17:04,405 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:17:04,405 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:17:04,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:04,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:17:04,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:17:06,660 INFO L134 CoverageAnalysis]: Checked inductivity of 23871 backedges. 0 proven. 23871 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:06,661 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:17:06,661 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:17:06,668 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:17:06,791 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:17:06,791 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:17:06,798 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:17:07,223 INFO L134 CoverageAnalysis]: Checked inductivity of 23871 backedges. 0 proven. 23871 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:07,245 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:17:07,245 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [220, 220] total 220 [2018-10-01 01:17:07,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 221 states [2018-10-01 01:17:07,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 221 interpolants. [2018-10-01 01:17:07,250 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:17:07,250 INFO L87 Difference]: Start difference. First operand 222 states and 222 transitions. Second operand 221 states. [2018-10-01 01:17:10,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:17:10,607 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-10-01 01:17:10,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2018-10-01 01:17:10,607 INFO L78 Accepts]: Start accepts. Automaton has 221 states. Word has length 221 [2018-10-01 01:17:10,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:17:10,607 INFO L225 Difference]: With dead ends: 225 [2018-10-01 01:17:10,607 INFO L226 Difference]: Without dead ends: 223 [2018-10-01 01:17:10,608 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 01:17:10,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-01 01:17:10,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-10-01 01:17:10,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-10-01 01:17:10,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-10-01 01:17:10,610 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 221 [2018-10-01 01:17:10,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:17:10,610 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-10-01 01:17:10,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has 221 states. [2018-10-01 01:17:10,610 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-10-01 01:17:10,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-01 01:17:10,611 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:17:10,611 INFO L375 BasicCegarLoop]: trace histogram [219, 1, 1, 1] [2018-10-01 01:17:10,611 INFO L423 AbstractCegarLoop]: === Iteration 220 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:17:10,611 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:17:10,611 INFO L82 PathProgramCache]: Analyzing trace with hash -359450170, now seen corresponding path program 219 times [2018-10-01 01:17:10,611 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:17:10,611 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:17:10,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:10,612 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:17:10,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:17:12,699 INFO L134 CoverageAnalysis]: Checked inductivity of 24090 backedges. 0 proven. 24090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:12,700 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:17:12,700 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:17:12,707 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:17:13,110 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 111 check-sat command(s) [2018-10-01 01:17:13,110 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:17:13,118 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:17:13,578 INFO L134 CoverageAnalysis]: Checked inductivity of 24090 backedges. 0 proven. 24090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:13,599 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:17:13,600 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [221, 221] total 221 [2018-10-01 01:17:13,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 222 states [2018-10-01 01:17:13,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 222 interpolants. [2018-10-01 01:17:13,603 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:17:13,603 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 222 states. [2018-10-01 01:17:16,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:17:16,741 INFO L93 Difference]: Finished difference Result 226 states and 226 transitions. [2018-10-01 01:17:16,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2018-10-01 01:17:16,741 INFO L78 Accepts]: Start accepts. Automaton has 222 states. Word has length 222 [2018-10-01 01:17:16,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:17:16,742 INFO L225 Difference]: With dead ends: 226 [2018-10-01 01:17:16,742 INFO L226 Difference]: Without dead ends: 224 [2018-10-01 01:17:16,742 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 01:17:16,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-10-01 01:17:16,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2018-10-01 01:17:16,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-10-01 01:17:16,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 224 transitions. [2018-10-01 01:17:16,745 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 224 transitions. Word has length 222 [2018-10-01 01:17:16,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:17:16,745 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 224 transitions. [2018-10-01 01:17:16,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has 222 states. [2018-10-01 01:17:16,745 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 224 transitions. [2018-10-01 01:17:16,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-01 01:17:16,746 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:17:16,746 INFO L375 BasicCegarLoop]: trace histogram [220, 1, 1, 1] [2018-10-01 01:17:16,746 INFO L423 AbstractCegarLoop]: === Iteration 221 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:17:16,746 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:17:16,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1741942752, now seen corresponding path program 220 times [2018-10-01 01:17:16,746 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:17:16,746 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:17:16,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:16,747 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:17:16,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:17,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:17:18,895 INFO L134 CoverageAnalysis]: Checked inductivity of 24310 backedges. 0 proven. 24310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:18,896 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:17:18,896 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:17:18,903 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:17:19,070 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:17:19,070 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:17:19,078 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:17:19,519 INFO L134 CoverageAnalysis]: Checked inductivity of 24310 backedges. 0 proven. 24310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:19,541 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:17:19,541 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [222, 222] total 222 [2018-10-01 01:17:19,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 223 states [2018-10-01 01:17:19,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 223 interpolants. [2018-10-01 01:17:19,545 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:17:19,546 INFO L87 Difference]: Start difference. First operand 224 states and 224 transitions. Second operand 223 states. [2018-10-01 01:17:23,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:17:23,678 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2018-10-01 01:17:23,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2018-10-01 01:17:23,678 INFO L78 Accepts]: Start accepts. Automaton has 223 states. Word has length 223 [2018-10-01 01:17:23,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:17:23,678 INFO L225 Difference]: With dead ends: 227 [2018-10-01 01:17:23,678 INFO L226 Difference]: Without dead ends: 225 [2018-10-01 01:17:23,679 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 01:17:23,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-10-01 01:17:23,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-10-01 01:17:23,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-10-01 01:17:23,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-10-01 01:17:23,681 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 223 [2018-10-01 01:17:23,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:17:23,681 INFO L480 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-10-01 01:17:23,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has 223 states. [2018-10-01 01:17:23,682 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-10-01 01:17:23,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-01 01:17:23,682 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:17:23,682 INFO L375 BasicCegarLoop]: trace histogram [221, 1, 1, 1] [2018-10-01 01:17:23,682 INFO L423 AbstractCegarLoop]: === Iteration 222 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:17:23,682 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:17:23,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1834353402, now seen corresponding path program 221 times [2018-10-01 01:17:23,683 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:17:23,683 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:17:23,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:23,683 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:17:23,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:17:25,816 INFO L134 CoverageAnalysis]: Checked inductivity of 24531 backedges. 0 proven. 24531 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:25,816 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:17:25,816 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:17:25,823 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:17:26,201 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 112 check-sat command(s) [2018-10-01 01:17:26,202 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:17:26,211 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:17:26,714 INFO L134 CoverageAnalysis]: Checked inductivity of 24531 backedges. 0 proven. 24531 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:26,736 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:17:26,736 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [223, 223] total 223 [2018-10-01 01:17:26,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 224 states [2018-10-01 01:17:26,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2018-10-01 01:17:26,740 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:17:26,740 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 224 states. [2018-10-01 01:17:30,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:17:30,236 INFO L93 Difference]: Finished difference Result 228 states and 228 transitions. [2018-10-01 01:17:30,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2018-10-01 01:17:30,236 INFO L78 Accepts]: Start accepts. Automaton has 224 states. Word has length 224 [2018-10-01 01:17:30,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:17:30,237 INFO L225 Difference]: With dead ends: 228 [2018-10-01 01:17:30,237 INFO L226 Difference]: Without dead ends: 226 [2018-10-01 01:17:30,237 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 01:17:30,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-10-01 01:17:30,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2018-10-01 01:17:30,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-10-01 01:17:30,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 226 transitions. [2018-10-01 01:17:30,240 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 226 transitions. Word has length 224 [2018-10-01 01:17:30,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:17:30,240 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 226 transitions. [2018-10-01 01:17:30,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has 224 states. [2018-10-01 01:17:30,240 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 226 transitions. [2018-10-01 01:17:30,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-10-01 01:17:30,241 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:17:30,241 INFO L375 BasicCegarLoop]: trace histogram [222, 1, 1, 1] [2018-10-01 01:17:30,241 INFO L423 AbstractCegarLoop]: === Iteration 223 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:17:30,241 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:17:30,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1030384480, now seen corresponding path program 222 times [2018-10-01 01:17:30,241 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:17:30,241 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:17:30,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:30,242 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:17:30,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:17:32,493 INFO L134 CoverageAnalysis]: Checked inductivity of 24753 backedges. 0 proven. 24753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:32,493 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:17:32,493 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:17:32,501 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:17:32,849 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 112 check-sat command(s) [2018-10-01 01:17:32,849 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:17:32,859 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:17:33,298 INFO L134 CoverageAnalysis]: Checked inductivity of 24753 backedges. 0 proven. 24753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:33,319 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:17:33,319 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [224, 224] total 224 [2018-10-01 01:17:33,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 225 states [2018-10-01 01:17:33,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 225 interpolants. [2018-10-01 01:17:33,323 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:17:33,323 INFO L87 Difference]: Start difference. First operand 226 states and 226 transitions. Second operand 225 states. [2018-10-01 01:17:36,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:17:36,583 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-10-01 01:17:36,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 225 states. [2018-10-01 01:17:36,584 INFO L78 Accepts]: Start accepts. Automaton has 225 states. Word has length 225 [2018-10-01 01:17:36,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:17:36,584 INFO L225 Difference]: With dead ends: 229 [2018-10-01 01:17:36,584 INFO L226 Difference]: Without dead ends: 227 [2018-10-01 01:17:36,584 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 01:17:36,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-10-01 01:17:36,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-10-01 01:17:36,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-10-01 01:17:36,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-10-01 01:17:36,587 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 225 [2018-10-01 01:17:36,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:17:36,587 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-10-01 01:17:36,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has 225 states. [2018-10-01 01:17:36,588 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-10-01 01:17:36,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-01 01:17:36,588 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:17:36,588 INFO L375 BasicCegarLoop]: trace histogram [223, 1, 1, 1] [2018-10-01 01:17:36,588 INFO L423 AbstractCegarLoop]: === Iteration 224 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:17:36,588 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:17:36,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1877151674, now seen corresponding path program 223 times [2018-10-01 01:17:36,589 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:17:36,589 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:17:36,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:36,589 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:17:36,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:17:38,803 INFO L134 CoverageAnalysis]: Checked inductivity of 24976 backedges. 0 proven. 24976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:38,804 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:17:38,804 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:17:38,811 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:17:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:17:38,946 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:17:39,390 INFO L134 CoverageAnalysis]: Checked inductivity of 24976 backedges. 0 proven. 24976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:39,410 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:17:39,410 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [225, 225] total 225 [2018-10-01 01:17:39,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 226 states [2018-10-01 01:17:39,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 226 interpolants. [2018-10-01 01:17:39,415 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:17:39,415 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand 226 states. [2018-10-01 01:17:41,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:17:41,893 INFO L93 Difference]: Finished difference Result 230 states and 230 transitions. [2018-10-01 01:17:41,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2018-10-01 01:17:41,893 INFO L78 Accepts]: Start accepts. Automaton has 226 states. Word has length 226 [2018-10-01 01:17:41,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:17:41,894 INFO L225 Difference]: With dead ends: 230 [2018-10-01 01:17:41,894 INFO L226 Difference]: Without dead ends: 228 [2018-10-01 01:17:41,894 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 01:17:41,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-10-01 01:17:41,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2018-10-01 01:17:41,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-10-01 01:17:41,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 228 transitions. [2018-10-01 01:17:41,897 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 228 transitions. Word has length 226 [2018-10-01 01:17:41,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:17:41,897 INFO L480 AbstractCegarLoop]: Abstraction has 228 states and 228 transitions. [2018-10-01 01:17:41,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has 226 states. [2018-10-01 01:17:41,897 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 228 transitions. [2018-10-01 01:17:41,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-10-01 01:17:41,898 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:17:41,898 INFO L375 BasicCegarLoop]: trace histogram [224, 1, 1, 1] [2018-10-01 01:17:41,898 INFO L423 AbstractCegarLoop]: === Iteration 225 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:17:41,898 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:17:41,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1937836384, now seen corresponding path program 224 times [2018-10-01 01:17:41,898 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:17:41,898 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:17:41,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:41,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:17:41,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:42,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:17:44,152 INFO L134 CoverageAnalysis]: Checked inductivity of 25200 backedges. 0 proven. 25200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:44,152 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:17:44,152 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:17:44,160 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:17:44,305 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:17:44,306 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:17:44,315 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:17:45,024 INFO L134 CoverageAnalysis]: Checked inductivity of 25200 backedges. 0 proven. 25200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:45,045 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:17:45,046 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [226, 226] total 226 [2018-10-01 01:17:45,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 227 states [2018-10-01 01:17:45,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 227 interpolants. [2018-10-01 01:17:45,050 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:17:45,051 INFO L87 Difference]: Start difference. First operand 228 states and 228 transitions. Second operand 227 states. [2018-10-01 01:17:49,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:17:49,493 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2018-10-01 01:17:49,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2018-10-01 01:17:49,493 INFO L78 Accepts]: Start accepts. Automaton has 227 states. Word has length 227 [2018-10-01 01:17:49,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:17:49,494 INFO L225 Difference]: With dead ends: 231 [2018-10-01 01:17:49,494 INFO L226 Difference]: Without dead ends: 229 [2018-10-01 01:17:49,494 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 01:17:49,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-10-01 01:17:49,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-10-01 01:17:49,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-10-01 01:17:49,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 229 transitions. [2018-10-01 01:17:49,497 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 229 transitions. Word has length 227 [2018-10-01 01:17:49,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:17:49,497 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 229 transitions. [2018-10-01 01:17:49,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has 227 states. [2018-10-01 01:17:49,497 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 229 transitions. [2018-10-01 01:17:49,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-01 01:17:49,498 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:17:49,498 INFO L375 BasicCegarLoop]: trace histogram [225, 1, 1, 1] [2018-10-01 01:17:49,498 INFO L423 AbstractCegarLoop]: === Iteration 226 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:17:49,498 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:17:49,498 INFO L82 PathProgramCache]: Analyzing trace with hash -56618106, now seen corresponding path program 225 times [2018-10-01 01:17:49,498 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:17:49,498 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:17:49,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:49,499 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:17:49,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:17:51,613 INFO L134 CoverageAnalysis]: Checked inductivity of 25425 backedges. 0 proven. 25425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:51,614 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:17:51,614 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:17:51,621 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:17:52,036 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 114 check-sat command(s) [2018-10-01 01:17:52,037 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:17:52,044 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:17:52,511 INFO L134 CoverageAnalysis]: Checked inductivity of 25425 backedges. 0 proven. 25425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:52,532 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:17:52,532 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [227, 227] total 227 [2018-10-01 01:17:52,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 228 states [2018-10-01 01:17:52,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 228 interpolants. [2018-10-01 01:17:52,537 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:17:52,537 INFO L87 Difference]: Start difference. First operand 229 states and 229 transitions. Second operand 228 states. [2018-10-01 01:17:56,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:17:56,299 INFO L93 Difference]: Finished difference Result 232 states and 232 transitions. [2018-10-01 01:17:56,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 228 states. [2018-10-01 01:17:56,299 INFO L78 Accepts]: Start accepts. Automaton has 228 states. Word has length 228 [2018-10-01 01:17:56,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:17:56,300 INFO L225 Difference]: With dead ends: 232 [2018-10-01 01:17:56,300 INFO L226 Difference]: Without dead ends: 230 [2018-10-01 01:17:56,300 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 01:17:56,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-10-01 01:17:56,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2018-10-01 01:17:56,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-10-01 01:17:56,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2018-10-01 01:17:56,303 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 228 [2018-10-01 01:17:56,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:17:56,304 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2018-10-01 01:17:56,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has 228 states. [2018-10-01 01:17:56,304 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2018-10-01 01:17:56,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-10-01 01:17:56,304 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:17:56,304 INFO L375 BasicCegarLoop]: trace histogram [226, 1, 1, 1] [2018-10-01 01:17:56,305 INFO L423 AbstractCegarLoop]: === Iteration 227 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:17:56,305 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:17:56,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1755165152, now seen corresponding path program 226 times [2018-10-01 01:17:56,305 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:17:56,305 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:17:56,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:56,305 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:17:56,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:17:58,640 INFO L134 CoverageAnalysis]: Checked inductivity of 25651 backedges. 0 proven. 25651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:58,640 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:17:58,641 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:17:58,654 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:17:58,827 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:17:58,827 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:17:58,835 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:17:59,267 INFO L134 CoverageAnalysis]: Checked inductivity of 25651 backedges. 0 proven. 25651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:59,289 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:17:59,289 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [228, 228] total 228 [2018-10-01 01:17:59,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 229 states [2018-10-01 01:17:59,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 229 interpolants. [2018-10-01 01:17:59,294 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:17:59,294 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand 229 states. [2018-10-01 01:18:03,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:18:03,753 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-10-01 01:18:03,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 229 states. [2018-10-01 01:18:03,754 INFO L78 Accepts]: Start accepts. Automaton has 229 states. Word has length 229 [2018-10-01 01:18:03,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:18:03,754 INFO L225 Difference]: With dead ends: 233 [2018-10-01 01:18:03,754 INFO L226 Difference]: Without dead ends: 231 [2018-10-01 01:18:03,755 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 01:18:03,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-10-01 01:18:03,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-10-01 01:18:03,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-10-01 01:18:03,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2018-10-01 01:18:03,759 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 229 [2018-10-01 01:18:03,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:18:03,759 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2018-10-01 01:18:03,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has 229 states. [2018-10-01 01:18:03,759 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2018-10-01 01:18:03,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-10-01 01:18:03,760 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:18:03,760 INFO L375 BasicCegarLoop]: trace histogram [227, 1, 1, 1] [2018-10-01 01:18:03,760 INFO L423 AbstractCegarLoop]: === Iteration 228 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:18:03,760 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:18:03,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1424451270, now seen corresponding path program 227 times [2018-10-01 01:18:03,761 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:18:03,761 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:18:03,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:03,761 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:18:03,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:04,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:18:06,046 INFO L134 CoverageAnalysis]: Checked inductivity of 25878 backedges. 0 proven. 25878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:06,047 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:18:06,047 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:18:06,056 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:18:06,451 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 115 check-sat command(s) [2018-10-01 01:18:06,451 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:18:06,460 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:18:06,961 INFO L134 CoverageAnalysis]: Checked inductivity of 25878 backedges. 0 proven. 25878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:06,983 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:18:06,983 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [229, 229] total 229 [2018-10-01 01:18:06,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 230 states [2018-10-01 01:18:06,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 230 interpolants. [2018-10-01 01:18:06,986 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:18:06,987 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand 230 states. [2018-10-01 01:18:11,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:18:11,256 INFO L93 Difference]: Finished difference Result 234 states and 234 transitions. [2018-10-01 01:18:11,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 230 states. [2018-10-01 01:18:11,256 INFO L78 Accepts]: Start accepts. Automaton has 230 states. Word has length 230 [2018-10-01 01:18:11,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:18:11,257 INFO L225 Difference]: With dead ends: 234 [2018-10-01 01:18:11,257 INFO L226 Difference]: Without dead ends: 232 [2018-10-01 01:18:11,257 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 01:18:11,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-10-01 01:18:11,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2018-10-01 01:18:11,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-10-01 01:18:11,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 232 transitions. [2018-10-01 01:18:11,260 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 232 transitions. Word has length 230 [2018-10-01 01:18:11,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:18:11,261 INFO L480 AbstractCegarLoop]: Abstraction has 232 states and 232 transitions. [2018-10-01 01:18:11,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has 230 states. [2018-10-01 01:18:11,261 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 232 transitions. [2018-10-01 01:18:11,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-10-01 01:18:11,261 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:18:11,261 INFO L375 BasicCegarLoop]: trace histogram [228, 1, 1, 1] [2018-10-01 01:18:11,261 INFO L423 AbstractCegarLoop]: === Iteration 229 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:18:11,262 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:18:11,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1208312544, now seen corresponding path program 228 times [2018-10-01 01:18:11,262 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:18:11,262 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:18:11,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:11,262 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:18:11,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:11,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:18:13,667 INFO L134 CoverageAnalysis]: Checked inductivity of 26106 backedges. 0 proven. 26106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:13,667 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:18:13,667 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:18:13,674 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:18:14,040 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 115 check-sat command(s) [2018-10-01 01:18:14,041 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:18:14,049 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:18:14,505 INFO L134 CoverageAnalysis]: Checked inductivity of 26106 backedges. 0 proven. 26106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:14,526 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:18:14,526 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [230, 230] total 230 [2018-10-01 01:18:14,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 231 states [2018-10-01 01:18:14,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 231 interpolants. [2018-10-01 01:18:14,530 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:18:14,530 INFO L87 Difference]: Start difference. First operand 232 states and 232 transitions. Second operand 231 states. [2018-10-01 01:18:18,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:18:18,194 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-10-01 01:18:18,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2018-10-01 01:18:18,195 INFO L78 Accepts]: Start accepts. Automaton has 231 states. Word has length 231 [2018-10-01 01:18:18,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:18:18,195 INFO L225 Difference]: With dead ends: 235 [2018-10-01 01:18:18,195 INFO L226 Difference]: Without dead ends: 233 [2018-10-01 01:18:18,195 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 01:18:18,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-10-01 01:18:18,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-10-01 01:18:18,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-10-01 01:18:18,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 233 transitions. [2018-10-01 01:18:18,198 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 233 transitions. Word has length 231 [2018-10-01 01:18:18,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:18:18,198 INFO L480 AbstractCegarLoop]: Abstraction has 233 states and 233 transitions. [2018-10-01 01:18:18,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has 231 states. [2018-10-01 01:18:18,199 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 233 transitions. [2018-10-01 01:18:18,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-10-01 01:18:18,199 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:18:18,199 INFO L375 BasicCegarLoop]: trace histogram [229, 1, 1, 1] [2018-10-01 01:18:18,199 INFO L423 AbstractCegarLoop]: === Iteration 230 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:18:18,199 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:18:18,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1197020666, now seen corresponding path program 229 times [2018-10-01 01:18:18,200 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:18:18,200 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:18:18,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:18,200 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:18:18,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:18,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:18:20,515 INFO L134 CoverageAnalysis]: Checked inductivity of 26335 backedges. 0 proven. 26335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:20,515 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:18:20,515 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:18:20,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:18:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:18:20,663 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:18:21,118 INFO L134 CoverageAnalysis]: Checked inductivity of 26335 backedges. 0 proven. 26335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:21,138 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:18:21,139 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [231, 231] total 231 [2018-10-01 01:18:21,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 232 states [2018-10-01 01:18:21,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 232 interpolants. [2018-10-01 01:18:21,142 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:18:21,143 INFO L87 Difference]: Start difference. First operand 233 states and 233 transitions. Second operand 232 states. [2018-10-01 01:18:25,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:18:25,445 INFO L93 Difference]: Finished difference Result 236 states and 236 transitions. [2018-10-01 01:18:25,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2018-10-01 01:18:25,446 INFO L78 Accepts]: Start accepts. Automaton has 232 states. Word has length 232 [2018-10-01 01:18:25,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:18:25,446 INFO L225 Difference]: With dead ends: 236 [2018-10-01 01:18:25,446 INFO L226 Difference]: Without dead ends: 234 [2018-10-01 01:18:25,447 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 01:18:25,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-10-01 01:18:25,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2018-10-01 01:18:25,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-10-01 01:18:25,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 234 transitions. [2018-10-01 01:18:25,450 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 234 transitions. Word has length 232 [2018-10-01 01:18:25,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:18:25,450 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 234 transitions. [2018-10-01 01:18:25,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has 232 states. [2018-10-01 01:18:25,450 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 234 transitions. [2018-10-01 01:18:25,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-10-01 01:18:25,451 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:18:25,451 INFO L375 BasicCegarLoop]: trace histogram [230, 1, 1, 1] [2018-10-01 01:18:25,451 INFO L423 AbstractCegarLoop]: === Iteration 231 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:18:25,451 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:18:25,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1547061152, now seen corresponding path program 230 times [2018-10-01 01:18:25,451 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:18:25,451 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:18:25,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:25,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:18:25,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:25,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:18:27,817 INFO L134 CoverageAnalysis]: Checked inductivity of 26565 backedges. 0 proven. 26565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:27,817 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:18:27,817 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:18:27,825 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:18:27,956 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:18:27,957 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:18:27,964 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:18:28,425 INFO L134 CoverageAnalysis]: Checked inductivity of 26565 backedges. 0 proven. 26565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:28,445 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:18:28,445 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [232, 232] total 232 [2018-10-01 01:18:28,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 233 states [2018-10-01 01:18:28,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 233 interpolants. [2018-10-01 01:18:28,449 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:18:28,449 INFO L87 Difference]: Start difference. First operand 234 states and 234 transitions. Second operand 233 states. [2018-10-01 01:18:33,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:18:33,086 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-10-01 01:18:33,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 233 states. [2018-10-01 01:18:33,087 INFO L78 Accepts]: Start accepts. Automaton has 233 states. Word has length 233 [2018-10-01 01:18:33,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:18:33,087 INFO L225 Difference]: With dead ends: 237 [2018-10-01 01:18:33,087 INFO L226 Difference]: Without dead ends: 235 [2018-10-01 01:18:33,088 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 01:18:33,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-10-01 01:18:33,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-10-01 01:18:33,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-10-01 01:18:33,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions. [2018-10-01 01:18:33,090 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 233 [2018-10-01 01:18:33,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:18:33,091 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions. [2018-10-01 01:18:33,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has 233 states. [2018-10-01 01:18:33,091 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions. [2018-10-01 01:18:33,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-10-01 01:18:33,091 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:18:33,091 INFO L375 BasicCegarLoop]: trace histogram [231, 1, 1, 1] [2018-10-01 01:18:33,092 INFO L423 AbstractCegarLoop]: === Iteration 232 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:18:33,092 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:18:33,092 INFO L82 PathProgramCache]: Analyzing trace with hash 714251590, now seen corresponding path program 231 times [2018-10-01 01:18:33,092 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:18:33,092 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:18:33,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:33,092 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:18:33,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:18:35,461 INFO L134 CoverageAnalysis]: Checked inductivity of 26796 backedges. 0 proven. 26796 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:35,461 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:18:35,461 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:18:35,468 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:18:35,948 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 117 check-sat command(s) [2018-10-01 01:18:35,948 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:18:35,958 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:18:36,404 INFO L134 CoverageAnalysis]: Checked inductivity of 26796 backedges. 0 proven. 26796 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:36,425 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:18:36,425 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [233, 233] total 233 [2018-10-01 01:18:36,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 234 states [2018-10-01 01:18:36,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 234 interpolants. [2018-10-01 01:18:36,429 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:18:36,429 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand 234 states. [2018-10-01 01:18:41,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:18:41,383 INFO L93 Difference]: Finished difference Result 238 states and 238 transitions. [2018-10-01 01:18:41,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 234 states. [2018-10-01 01:18:41,383 INFO L78 Accepts]: Start accepts. Automaton has 234 states. Word has length 234 [2018-10-01 01:18:41,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:18:41,384 INFO L225 Difference]: With dead ends: 238 [2018-10-01 01:18:41,384 INFO L226 Difference]: Without dead ends: 236 [2018-10-01 01:18:41,384 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 01:18:41,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-10-01 01:18:41,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2018-10-01 01:18:41,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-10-01 01:18:41,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2018-10-01 01:18:41,387 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 234 [2018-10-01 01:18:41,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:18:41,387 INFO L480 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2018-10-01 01:18:41,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has 234 states. [2018-10-01 01:18:41,387 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2018-10-01 01:18:41,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-10-01 01:18:41,388 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:18:41,388 INFO L375 BasicCegarLoop]: trace histogram [232, 1, 1, 1] [2018-10-01 01:18:41,388 INFO L423 AbstractCegarLoop]: === Iteration 233 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:18:41,388 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:18:41,388 INFO L82 PathProgramCache]: Analyzing trace with hash 666958944, now seen corresponding path program 232 times [2018-10-01 01:18:41,388 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:18:41,388 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:18:41,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:41,389 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:18:41,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:41,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:18:43,753 INFO L134 CoverageAnalysis]: Checked inductivity of 27028 backedges. 0 proven. 27028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:43,754 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:18:43,754 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:18:43,762 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:18:43,947 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:18:43,947 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:18:43,955 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:18:44,444 INFO L134 CoverageAnalysis]: Checked inductivity of 27028 backedges. 0 proven. 27028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:44,465 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:18:44,465 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [234, 234] total 234 [2018-10-01 01:18:44,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 235 states [2018-10-01 01:18:44,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 235 interpolants. [2018-10-01 01:18:44,470 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:18:44,470 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand 235 states. [2018-10-01 01:18:49,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:18:49,522 INFO L93 Difference]: Finished difference Result 239 states and 239 transitions. [2018-10-01 01:18:49,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2018-10-01 01:18:49,523 INFO L78 Accepts]: Start accepts. Automaton has 235 states. Word has length 235 [2018-10-01 01:18:49,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:18:49,523 INFO L225 Difference]: With dead ends: 239 [2018-10-01 01:18:49,523 INFO L226 Difference]: Without dead ends: 237 [2018-10-01 01:18:49,523 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 01:18:49,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-10-01 01:18:49,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-10-01 01:18:49,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-10-01 01:18:49,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 237 transitions. [2018-10-01 01:18:49,526 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 237 transitions. Word has length 235 [2018-10-01 01:18:49,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:18:49,527 INFO L480 AbstractCegarLoop]: Abstraction has 237 states and 237 transitions. [2018-10-01 01:18:49,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has 235 states. [2018-10-01 01:18:49,527 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 237 transitions. [2018-10-01 01:18:49,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-10-01 01:18:49,527 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:18:49,527 INFO L375 BasicCegarLoop]: trace histogram [233, 1, 1, 1] [2018-10-01 01:18:49,528 INFO L423 AbstractCegarLoop]: === Iteration 234 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:18:49,528 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:18:49,528 INFO L82 PathProgramCache]: Analyzing trace with hash -799113082, now seen corresponding path program 233 times [2018-10-01 01:18:49,528 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:18:49,528 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:18:49,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:49,528 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:18:49,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:18:51,833 INFO L134 CoverageAnalysis]: Checked inductivity of 27261 backedges. 0 proven. 27261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:51,833 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:18:51,833 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:18:51,841 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:18:52,252 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 118 check-sat command(s) [2018-10-01 01:18:52,252 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:18:52,264 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:18:52,772 INFO L134 CoverageAnalysis]: Checked inductivity of 27261 backedges. 0 proven. 27261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:52,793 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:18:52,793 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [235, 235] total 235 [2018-10-01 01:18:52,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 236 states [2018-10-01 01:18:52,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 236 interpolants. [2018-10-01 01:18:52,797 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:18:52,797 INFO L87 Difference]: Start difference. First operand 237 states and 237 transitions. Second operand 236 states. [2018-10-01 01:18:55,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:18:55,791 INFO L93 Difference]: Finished difference Result 240 states and 240 transitions. [2018-10-01 01:18:55,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 236 states. [2018-10-01 01:18:55,792 INFO L78 Accepts]: Start accepts. Automaton has 236 states. Word has length 236 [2018-10-01 01:18:55,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:18:55,792 INFO L225 Difference]: With dead ends: 240 [2018-10-01 01:18:55,792 INFO L226 Difference]: Without dead ends: 238 [2018-10-01 01:18:55,793 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 01:18:55,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-10-01 01:18:55,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2018-10-01 01:18:55,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2018-10-01 01:18:55,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 238 transitions. [2018-10-01 01:18:55,795 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 238 transitions. Word has length 236 [2018-10-01 01:18:55,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:18:55,796 INFO L480 AbstractCegarLoop]: Abstraction has 238 states and 238 transitions. [2018-10-01 01:18:55,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has 236 states. [2018-10-01 01:18:55,796 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 238 transitions. [2018-10-01 01:18:55,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-10-01 01:18:55,796 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:18:55,796 INFO L375 BasicCegarLoop]: trace histogram [234, 1, 1, 1] [2018-10-01 01:18:55,797 INFO L423 AbstractCegarLoop]: === Iteration 235 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:18:55,797 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:18:55,797 INFO L82 PathProgramCache]: Analyzing trace with hash 997294368, now seen corresponding path program 234 times [2018-10-01 01:18:55,797 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:18:55,797 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:18:55,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:55,797 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:18:55,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:18:58,279 INFO L134 CoverageAnalysis]: Checked inductivity of 27495 backedges. 0 proven. 27495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:58,279 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:18:58,280 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:18:58,287 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:18:58,666 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 118 check-sat command(s) [2018-10-01 01:18:58,666 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:18:58,677 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:18:59,165 INFO L134 CoverageAnalysis]: Checked inductivity of 27495 backedges. 0 proven. 27495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:59,186 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:18:59,187 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [236, 236] total 236 [2018-10-01 01:18:59,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 237 states [2018-10-01 01:18:59,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 237 interpolants. [2018-10-01 01:18:59,192 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:18:59,192 INFO L87 Difference]: Start difference. First operand 238 states and 238 transitions. Second operand 237 states. [2018-10-01 01:19:02,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:19:02,756 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-10-01 01:19:02,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 237 states. [2018-10-01 01:19:02,756 INFO L78 Accepts]: Start accepts. Automaton has 237 states. Word has length 237 [2018-10-01 01:19:02,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:19:02,756 INFO L225 Difference]: With dead ends: 241 [2018-10-01 01:19:02,756 INFO L226 Difference]: Without dead ends: 239 [2018-10-01 01:19:02,757 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 01:19:02,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-10-01 01:19:02,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-10-01 01:19:02,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-10-01 01:19:02,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2018-10-01 01:19:02,760 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 237 [2018-10-01 01:19:02,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:19:02,760 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2018-10-01 01:19:02,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has 237 states. [2018-10-01 01:19:02,760 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2018-10-01 01:19:02,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-01 01:19:02,761 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:19:02,761 INFO L375 BasicCegarLoop]: trace histogram [235, 1, 1, 1] [2018-10-01 01:19:02,761 INFO L423 AbstractCegarLoop]: === Iteration 236 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:19:02,761 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:19:02,761 INFO L82 PathProgramCache]: Analyzing trace with hash 851350470, now seen corresponding path program 235 times [2018-10-01 01:19:02,761 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:19:02,761 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:19:02,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:02,762 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:19:02,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:19:05,278 INFO L134 CoverageAnalysis]: Checked inductivity of 27730 backedges. 0 proven. 27730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:05,278 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:19:05,278 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:19:05,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:19:05,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:19:05,431 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:19:05,899 INFO L134 CoverageAnalysis]: Checked inductivity of 27730 backedges. 0 proven. 27730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:05,919 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:19:05,920 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [237, 237] total 237 [2018-10-01 01:19:05,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 238 states [2018-10-01 01:19:05,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 238 interpolants. [2018-10-01 01:19:05,924 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:19:05,924 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 238 states. [2018-10-01 01:19:09,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:19:09,779 INFO L93 Difference]: Finished difference Result 242 states and 242 transitions. [2018-10-01 01:19:09,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 238 states. [2018-10-01 01:19:09,779 INFO L78 Accepts]: Start accepts. Automaton has 238 states. Word has length 238 [2018-10-01 01:19:09,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:19:09,780 INFO L225 Difference]: With dead ends: 242 [2018-10-01 01:19:09,780 INFO L226 Difference]: Without dead ends: 240 [2018-10-01 01:19:09,780 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 01:19:09,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-10-01 01:19:09,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2018-10-01 01:19:09,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2018-10-01 01:19:09,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 240 transitions. [2018-10-01 01:19:09,783 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 240 transitions. Word has length 238 [2018-10-01 01:19:09,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:19:09,783 INFO L480 AbstractCegarLoop]: Abstraction has 240 states and 240 transitions. [2018-10-01 01:19:09,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has 238 states. [2018-10-01 01:19:09,783 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 240 transitions. [2018-10-01 01:19:09,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-10-01 01:19:09,784 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:19:09,784 INFO L375 BasicCegarLoop]: trace histogram [236, 1, 1, 1] [2018-10-01 01:19:09,784 INFO L423 AbstractCegarLoop]: === Iteration 237 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:19:09,784 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:19:09,784 INFO L82 PathProgramCache]: Analyzing trace with hash 622056928, now seen corresponding path program 236 times [2018-10-01 01:19:09,784 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:19:09,784 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:19:09,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:09,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:19:09,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:10,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:19:12,227 INFO L134 CoverageAnalysis]: Checked inductivity of 27966 backedges. 0 proven. 27966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:12,228 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:19:12,228 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:19:12,236 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:19:12,380 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:19:12,380 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:19:12,388 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:19:12,931 INFO L134 CoverageAnalysis]: Checked inductivity of 27966 backedges. 0 proven. 27966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:12,951 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:19:12,951 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [238, 238] total 238 [2018-10-01 01:19:12,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 239 states [2018-10-01 01:19:12,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 239 interpolants. [2018-10-01 01:19:12,956 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:19:12,956 INFO L87 Difference]: Start difference. First operand 240 states and 240 transitions. Second operand 239 states. [2018-10-01 01:19:18,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:19:18,225 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2018-10-01 01:19:18,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 239 states. [2018-10-01 01:19:18,226 INFO L78 Accepts]: Start accepts. Automaton has 239 states. Word has length 239 [2018-10-01 01:19:18,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:19:18,226 INFO L225 Difference]: With dead ends: 243 [2018-10-01 01:19:18,226 INFO L226 Difference]: Without dead ends: 241 [2018-10-01 01:19:18,226 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 01:19:18,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-10-01 01:19:18,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-10-01 01:19:18,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-10-01 01:19:18,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 241 transitions. [2018-10-01 01:19:18,229 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 241 transitions. Word has length 239 [2018-10-01 01:19:18,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:19:18,229 INFO L480 AbstractCegarLoop]: Abstraction has 241 states and 241 transitions. [2018-10-01 01:19:18,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has 239 states. [2018-10-01 01:19:18,229 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 241 transitions. [2018-10-01 01:19:18,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-10-01 01:19:18,230 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:19:18,230 INFO L375 BasicCegarLoop]: trace histogram [237, 1, 1, 1] [2018-10-01 01:19:18,230 INFO L423 AbstractCegarLoop]: === Iteration 238 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:19:18,230 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:19:18,230 INFO L82 PathProgramCache]: Analyzing trace with hash 2103891718, now seen corresponding path program 237 times [2018-10-01 01:19:18,230 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:19:18,230 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:19:18,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:18,231 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:19:18,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:19:20,768 INFO L134 CoverageAnalysis]: Checked inductivity of 28203 backedges. 0 proven. 28203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:20,768 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:19:20,768 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:19:20,774 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:19:21,243 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 120 check-sat command(s) [2018-10-01 01:19:21,243 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:19:21,251 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:19:21,732 INFO L134 CoverageAnalysis]: Checked inductivity of 28203 backedges. 0 proven. 28203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:21,752 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:19:21,753 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [239, 239] total 239 [2018-10-01 01:19:21,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 240 states [2018-10-01 01:19:21,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 240 interpolants. [2018-10-01 01:19:21,758 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:19:21,758 INFO L87 Difference]: Start difference. First operand 241 states and 241 transitions. Second operand 240 states. [2018-10-01 01:19:25,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:19:25,880 INFO L93 Difference]: Finished difference Result 244 states and 244 transitions. [2018-10-01 01:19:25,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 240 states. [2018-10-01 01:19:25,881 INFO L78 Accepts]: Start accepts. Automaton has 240 states. Word has length 240 [2018-10-01 01:19:25,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:19:25,881 INFO L225 Difference]: With dead ends: 244 [2018-10-01 01:19:25,881 INFO L226 Difference]: Without dead ends: 242 [2018-10-01 01:19:25,882 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 01:19:25,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-10-01 01:19:25,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2018-10-01 01:19:25,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-10-01 01:19:25,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 242 transitions. [2018-10-01 01:19:25,885 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 242 transitions. Word has length 240 [2018-10-01 01:19:25,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:19:25,885 INFO L480 AbstractCegarLoop]: Abstraction has 242 states and 242 transitions. [2018-10-01 01:19:25,885 INFO L481 AbstractCegarLoop]: Interpolant automaton has 240 states. [2018-10-01 01:19:25,885 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 242 transitions. [2018-10-01 01:19:25,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-10-01 01:19:25,886 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:19:25,886 INFO L375 BasicCegarLoop]: trace histogram [238, 1, 1, 1] [2018-10-01 01:19:25,886 INFO L423 AbstractCegarLoop]: === Iteration 239 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:19:25,886 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:19:25,886 INFO L82 PathProgramCache]: Analyzing trace with hash 796129952, now seen corresponding path program 238 times [2018-10-01 01:19:25,886 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:19:25,886 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:19:25,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:25,887 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:19:25,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:19:28,454 INFO L134 CoverageAnalysis]: Checked inductivity of 28441 backedges. 0 proven. 28441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:28,454 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:19:28,454 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:19:28,462 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:19:28,649 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:19:28,649 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:19:28,658 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:19:29,128 INFO L134 CoverageAnalysis]: Checked inductivity of 28441 backedges. 0 proven. 28441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:29,149 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:19:29,150 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [240, 240] total 240 [2018-10-01 01:19:29,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 241 states [2018-10-01 01:19:29,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 241 interpolants. [2018-10-01 01:19:29,154 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:19:29,154 INFO L87 Difference]: Start difference. First operand 242 states and 242 transitions. Second operand 241 states. [2018-10-01 01:19:32,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:19:32,917 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-10-01 01:19:32,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2018-10-01 01:19:32,917 INFO L78 Accepts]: Start accepts. Automaton has 241 states. Word has length 241 [2018-10-01 01:19:32,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:19:32,917 INFO L225 Difference]: With dead ends: 245 [2018-10-01 01:19:32,918 INFO L226 Difference]: Without dead ends: 243 [2018-10-01 01:19:32,918 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 01:19:32,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-10-01 01:19:32,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-10-01 01:19:32,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-10-01 01:19:32,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 243 transitions. [2018-10-01 01:19:32,921 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 243 transitions. Word has length 241 [2018-10-01 01:19:32,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:19:32,921 INFO L480 AbstractCegarLoop]: Abstraction has 243 states and 243 transitions. [2018-10-01 01:19:32,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has 241 states. [2018-10-01 01:19:32,921 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 243 transitions. [2018-10-01 01:19:32,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-01 01:19:32,922 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:19:32,922 INFO L375 BasicCegarLoop]: trace histogram [239, 1, 1, 1] [2018-10-01 01:19:32,922 INFO L423 AbstractCegarLoop]: === Iteration 240 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:19:32,922 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:19:32,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1089779130, now seen corresponding path program 239 times [2018-10-01 01:19:32,922 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:19:32,922 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:19:32,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:32,923 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:19:32,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:19:35,385 INFO L134 CoverageAnalysis]: Checked inductivity of 28680 backedges. 0 proven. 28680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:35,385 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:19:35,385 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:19:35,393 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:19:35,833 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 121 check-sat command(s) [2018-10-01 01:19:35,833 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:19:35,843 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:19:36,318 INFO L134 CoverageAnalysis]: Checked inductivity of 28680 backedges. 0 proven. 28680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:36,339 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:19:36,339 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [241, 241] total 241 [2018-10-01 01:19:36,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 242 states [2018-10-01 01:19:36,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 242 interpolants. [2018-10-01 01:19:36,345 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:19:36,345 INFO L87 Difference]: Start difference. First operand 243 states and 243 transitions. Second operand 242 states. [2018-10-01 01:19:40,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:19:40,228 INFO L93 Difference]: Finished difference Result 246 states and 246 transitions. [2018-10-01 01:19:40,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2018-10-01 01:19:40,229 INFO L78 Accepts]: Start accepts. Automaton has 242 states. Word has length 242 [2018-10-01 01:19:40,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:19:40,229 INFO L225 Difference]: With dead ends: 246 [2018-10-01 01:19:40,229 INFO L226 Difference]: Without dead ends: 244 [2018-10-01 01:19:40,229 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 01:19:40,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-10-01 01:19:40,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2018-10-01 01:19:40,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-10-01 01:19:40,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 244 transitions. [2018-10-01 01:19:40,232 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 244 transitions. Word has length 242 [2018-10-01 01:19:40,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:19:40,232 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 244 transitions. [2018-10-01 01:19:40,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has 242 states. [2018-10-01 01:19:40,233 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 244 transitions. [2018-10-01 01:19:40,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-10-01 01:19:40,233 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:19:40,233 INFO L375 BasicCegarLoop]: trace histogram [240, 1, 1, 1] [2018-10-01 01:19:40,233 INFO L423 AbstractCegarLoop]: === Iteration 241 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:19:40,234 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:19:40,234 INFO L82 PathProgramCache]: Analyzing trace with hash 576581472, now seen corresponding path program 240 times [2018-10-01 01:19:40,234 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:19:40,234 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:19:40,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:40,234 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:19:40,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:40,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:19:42,822 INFO L134 CoverageAnalysis]: Checked inductivity of 28920 backedges. 0 proven. 28920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:42,822 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:19:42,822 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:19:42,828 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:19:43,222 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 121 check-sat command(s) [2018-10-01 01:19:43,222 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:19:43,233 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:19:43,709 INFO L134 CoverageAnalysis]: Checked inductivity of 28920 backedges. 0 proven. 28920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:43,730 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:19:43,730 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [242, 242] total 242 [2018-10-01 01:19:43,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 243 states [2018-10-01 01:19:43,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 243 interpolants. [2018-10-01 01:19:43,734 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:19:43,734 INFO L87 Difference]: Start difference. First operand 244 states and 244 transitions. Second operand 243 states. [2018-10-01 01:19:47,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:19:47,884 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-10-01 01:19:47,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 243 states. [2018-10-01 01:19:47,885 INFO L78 Accepts]: Start accepts. Automaton has 243 states. Word has length 243 [2018-10-01 01:19:47,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:19:47,885 INFO L225 Difference]: With dead ends: 247 [2018-10-01 01:19:47,885 INFO L226 Difference]: Without dead ends: 245 [2018-10-01 01:19:47,885 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 01:19:47,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-10-01 01:19:47,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-10-01 01:19:47,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-10-01 01:19:47,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 245 transitions. [2018-10-01 01:19:47,888 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 245 transitions. Word has length 243 [2018-10-01 01:19:47,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:19:47,888 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 245 transitions. [2018-10-01 01:19:47,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has 243 states. [2018-10-01 01:19:47,889 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 245 transitions. [2018-10-01 01:19:47,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-10-01 01:19:47,889 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:19:47,889 INFO L375 BasicCegarLoop]: trace histogram [241, 1, 1, 1] [2018-10-01 01:19:47,889 INFO L423 AbstractCegarLoop]: === Iteration 242 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:19:47,890 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:19:47,890 INFO L82 PathProgramCache]: Analyzing trace with hash 694152582, now seen corresponding path program 241 times [2018-10-01 01:19:47,890 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:19:47,890 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:19:47,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:47,890 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:19:47,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:19:50,505 INFO L134 CoverageAnalysis]: Checked inductivity of 29161 backedges. 0 proven. 29161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:50,506 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:19:50,506 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:19:50,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:19:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:19:50,660 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:19:51,153 INFO L134 CoverageAnalysis]: Checked inductivity of 29161 backedges. 0 proven. 29161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:51,174 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:19:51,174 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [243, 243] total 243 [2018-10-01 01:19:51,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 244 states [2018-10-01 01:19:51,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 244 interpolants. [2018-10-01 01:19:51,181 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:19:51,181 INFO L87 Difference]: Start difference. First operand 245 states and 245 transitions. Second operand 244 states. [2018-10-01 01:19:56,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:19:56,403 INFO L93 Difference]: Finished difference Result 248 states and 248 transitions. [2018-10-01 01:19:56,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 244 states. [2018-10-01 01:19:56,403 INFO L78 Accepts]: Start accepts. Automaton has 244 states. Word has length 244 [2018-10-01 01:19:56,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:19:56,403 INFO L225 Difference]: With dead ends: 248 [2018-10-01 01:19:56,404 INFO L226 Difference]: Without dead ends: 246 [2018-10-01 01:19:56,404 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 01:19:56,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-10-01 01:19:56,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2018-10-01 01:19:56,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2018-10-01 01:19:56,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 246 transitions. [2018-10-01 01:19:56,407 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 246 transitions. Word has length 244 [2018-10-01 01:19:56,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:19:56,407 INFO L480 AbstractCegarLoop]: Abstraction has 246 states and 246 transitions. [2018-10-01 01:19:56,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has 244 states. [2018-10-01 01:19:56,407 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 246 transitions. [2018-10-01 01:19:56,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-10-01 01:19:56,407 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:19:56,408 INFO L375 BasicCegarLoop]: trace histogram [242, 1, 1, 1] [2018-10-01 01:19:56,408 INFO L423 AbstractCegarLoop]: === Iteration 243 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:19:56,408 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:19:56,408 INFO L82 PathProgramCache]: Analyzing trace with hash 43889696, now seen corresponding path program 242 times [2018-10-01 01:19:56,408 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:19:56,408 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:19:56,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:56,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:19:56,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:19:58,988 INFO L134 CoverageAnalysis]: Checked inductivity of 29403 backedges. 0 proven. 29403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:58,989 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:19:58,989 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:19:58,997 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:19:59,135 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:19:59,135 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:19:59,143 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:19:59,705 INFO L134 CoverageAnalysis]: Checked inductivity of 29403 backedges. 0 proven. 29403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:59,726 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:19:59,726 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [244, 244] total 244 [2018-10-01 01:19:59,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 245 states [2018-10-01 01:19:59,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 245 interpolants. [2018-10-01 01:19:59,731 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:19:59,731 INFO L87 Difference]: Start difference. First operand 246 states and 246 transitions. Second operand 245 states. [2018-10-01 01:20:02,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:20:02,685 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-10-01 01:20:02,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 245 states. [2018-10-01 01:20:02,685 INFO L78 Accepts]: Start accepts. Automaton has 245 states. Word has length 245 [2018-10-01 01:20:02,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:20:02,686 INFO L225 Difference]: With dead ends: 249 [2018-10-01 01:20:02,686 INFO L226 Difference]: Without dead ends: 247 [2018-10-01 01:20:02,686 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 01:20:02,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-10-01 01:20:02,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-10-01 01:20:02,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-10-01 01:20:02,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2018-10-01 01:20:02,689 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 245 [2018-10-01 01:20:02,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:20:02,690 INFO L480 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2018-10-01 01:20:02,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has 245 states. [2018-10-01 01:20:02,690 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2018-10-01 01:20:02,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-10-01 01:20:02,691 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:20:02,691 INFO L375 BasicCegarLoop]: trace histogram [243, 1, 1, 1] [2018-10-01 01:20:02,691 INFO L423 AbstractCegarLoop]: === Iteration 244 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:20:02,691 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:20:02,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1360576710, now seen corresponding path program 243 times [2018-10-01 01:20:02,691 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:20:02,691 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:20:02,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:02,692 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:20:02,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:03,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:20:05,288 INFO L134 CoverageAnalysis]: Checked inductivity of 29646 backedges. 0 proven. 29646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:05,288 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:20:05,288 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:20:05,295 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:20:05,784 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 123 check-sat command(s) [2018-10-01 01:20:05,784 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:20:05,792 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:20:06,281 INFO L134 CoverageAnalysis]: Checked inductivity of 29646 backedges. 0 proven. 29646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:06,302 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:20:06,303 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [245, 245] total 245 [2018-10-01 01:20:06,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 246 states [2018-10-01 01:20:06,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 246 interpolants. [2018-10-01 01:20:06,308 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:20:06,308 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand 246 states. [2018-10-01 01:20:10,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:20:10,928 INFO L93 Difference]: Finished difference Result 250 states and 250 transitions. [2018-10-01 01:20:10,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 246 states. [2018-10-01 01:20:10,928 INFO L78 Accepts]: Start accepts. Automaton has 246 states. Word has length 246 [2018-10-01 01:20:10,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:20:10,929 INFO L225 Difference]: With dead ends: 250 [2018-10-01 01:20:10,929 INFO L226 Difference]: Without dead ends: 248 [2018-10-01 01:20:10,929 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 01:20:10,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-10-01 01:20:10,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2018-10-01 01:20:10,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2018-10-01 01:20:10,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 248 transitions. [2018-10-01 01:20:10,932 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 248 transitions. Word has length 246 [2018-10-01 01:20:10,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:20:10,932 INFO L480 AbstractCegarLoop]: Abstraction has 248 states and 248 transitions. [2018-10-01 01:20:10,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has 246 states. [2018-10-01 01:20:10,932 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 248 transitions. [2018-10-01 01:20:10,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-10-01 01:20:10,933 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:20:10,933 INFO L375 BasicCegarLoop]: trace histogram [244, 1, 1, 1] [2018-10-01 01:20:10,933 INFO L423 AbstractCegarLoop]: === Iteration 245 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:20:10,933 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:20:10,933 INFO L82 PathProgramCache]: Analyzing trace with hash -771798816, now seen corresponding path program 244 times [2018-10-01 01:20:10,933 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:20:10,933 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:20:10,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:10,934 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:20:10,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:11,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:20:13,464 INFO L134 CoverageAnalysis]: Checked inductivity of 29890 backedges. 0 proven. 29890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:13,464 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:20:13,464 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:20:13,474 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:20:13,671 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:20:13,671 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:20:13,679 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:20:14,154 INFO L134 CoverageAnalysis]: Checked inductivity of 29890 backedges. 0 proven. 29890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:14,175 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:20:14,175 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [246, 246] total 246 [2018-10-01 01:20:14,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 247 states [2018-10-01 01:20:14,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 247 interpolants. [2018-10-01 01:20:14,180 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:20:14,180 INFO L87 Difference]: Start difference. First operand 248 states and 248 transitions. Second operand 247 states. [2018-10-01 01:20:18,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:20:18,328 INFO L93 Difference]: Finished difference Result 251 states and 251 transitions. [2018-10-01 01:20:18,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 247 states. [2018-10-01 01:20:18,329 INFO L78 Accepts]: Start accepts. Automaton has 247 states. Word has length 247 [2018-10-01 01:20:18,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:20:18,329 INFO L225 Difference]: With dead ends: 251 [2018-10-01 01:20:18,329 INFO L226 Difference]: Without dead ends: 249 [2018-10-01 01:20:18,329 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 01:20:18,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-10-01 01:20:18,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-10-01 01:20:18,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-10-01 01:20:18,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 249 transitions. [2018-10-01 01:20:18,332 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 249 transitions. Word has length 247 [2018-10-01 01:20:18,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:20:18,332 INFO L480 AbstractCegarLoop]: Abstraction has 249 states and 249 transitions. [2018-10-01 01:20:18,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has 247 states. [2018-10-01 01:20:18,333 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 249 transitions. [2018-10-01 01:20:18,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-01 01:20:18,333 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:20:18,333 INFO L375 BasicCegarLoop]: trace histogram [245, 1, 1, 1] [2018-10-01 01:20:18,333 INFO L423 AbstractCegarLoop]: === Iteration 246 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:20:18,334 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:20:18,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1844036614, now seen corresponding path program 245 times [2018-10-01 01:20:18,334 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:20:18,334 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:20:18,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:18,334 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:20:18,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:20:21,092 INFO L134 CoverageAnalysis]: Checked inductivity of 30135 backedges. 0 proven. 30135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:21,092 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:20:21,093 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:20:21,103 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:20:21,562 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 124 check-sat command(s) [2018-10-01 01:20:21,562 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:20:21,572 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:20:22,042 INFO L134 CoverageAnalysis]: Checked inductivity of 30135 backedges. 0 proven. 30135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:22,063 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:20:22,063 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [247, 247] total 247 [2018-10-01 01:20:22,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 248 states [2018-10-01 01:20:22,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 248 interpolants. [2018-10-01 01:20:22,068 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:20:22,068 INFO L87 Difference]: Start difference. First operand 249 states and 249 transitions. Second operand 248 states. [2018-10-01 01:20:26,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:20:26,845 INFO L93 Difference]: Finished difference Result 252 states and 252 transitions. [2018-10-01 01:20:26,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 248 states. [2018-10-01 01:20:26,846 INFO L78 Accepts]: Start accepts. Automaton has 248 states. Word has length 248 [2018-10-01 01:20:26,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:20:26,846 INFO L225 Difference]: With dead ends: 252 [2018-10-01 01:20:26,846 INFO L226 Difference]: Without dead ends: 250 [2018-10-01 01:20:26,847 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 01:20:26,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-10-01 01:20:26,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2018-10-01 01:20:26,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-10-01 01:20:26,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 250 transitions. [2018-10-01 01:20:26,850 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 250 transitions. Word has length 248 [2018-10-01 01:20:26,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:20:26,850 INFO L480 AbstractCegarLoop]: Abstraction has 250 states and 250 transitions. [2018-10-01 01:20:26,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has 248 states. [2018-10-01 01:20:26,851 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 250 transitions. [2018-10-01 01:20:26,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-10-01 01:20:26,851 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:20:26,851 INFO L375 BasicCegarLoop]: trace histogram [246, 1, 1, 1] [2018-10-01 01:20:26,851 INFO L423 AbstractCegarLoop]: === Iteration 247 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:20:26,852 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:20:26,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1330556320, now seen corresponding path program 246 times [2018-10-01 01:20:26,852 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:20:26,852 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:20:26,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:26,852 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:20:26,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:27,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:20:29,396 INFO L134 CoverageAnalysis]: Checked inductivity of 30381 backedges. 0 proven. 30381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:29,396 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:20:29,396 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:20:29,404 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:20:29,827 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 124 check-sat command(s) [2018-10-01 01:20:29,827 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:20:29,840 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:20:30,324 INFO L134 CoverageAnalysis]: Checked inductivity of 30381 backedges. 0 proven. 30381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:30,344 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:20:30,345 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [248, 248] total 248 [2018-10-01 01:20:30,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 249 states [2018-10-01 01:20:30,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 249 interpolants. [2018-10-01 01:20:30,350 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:20:30,350 INFO L87 Difference]: Start difference. First operand 250 states and 250 transitions. Second operand 249 states. [2018-10-01 01:20:35,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:20:35,205 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-10-01 01:20:35,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 249 states. [2018-10-01 01:20:35,205 INFO L78 Accepts]: Start accepts. Automaton has 249 states. Word has length 249 [2018-10-01 01:20:35,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:20:35,206 INFO L225 Difference]: With dead ends: 253 [2018-10-01 01:20:35,206 INFO L226 Difference]: Without dead ends: 251 [2018-10-01 01:20:35,206 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 01:20:35,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-10-01 01:20:35,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-10-01 01:20:35,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-10-01 01:20:35,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions. [2018-10-01 01:20:35,209 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 249 [2018-10-01 01:20:35,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:20:35,209 INFO L480 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions. [2018-10-01 01:20:35,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has 249 states. [2018-10-01 01:20:35,209 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions. [2018-10-01 01:20:35,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-10-01 01:20:35,210 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:20:35,210 INFO L375 BasicCegarLoop]: trace histogram [247, 1, 1, 1] [2018-10-01 01:20:35,210 INFO L423 AbstractCegarLoop]: === Iteration 248 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:20:35,210 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:20:35,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1702430906, now seen corresponding path program 247 times [2018-10-01 01:20:35,210 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:20:35,210 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:20:35,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:35,211 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:20:35,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:20:38,059 INFO L134 CoverageAnalysis]: Checked inductivity of 30628 backedges. 0 proven. 30628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:38,060 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:20:38,060 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:20:38,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:20:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:20:38,214 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:20:38,694 INFO L134 CoverageAnalysis]: Checked inductivity of 30628 backedges. 0 proven. 30628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:38,716 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:20:38,716 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [249, 249] total 249 [2018-10-01 01:20:38,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 250 states [2018-10-01 01:20:38,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 250 interpolants. [2018-10-01 01:20:38,721 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:20:38,721 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand 250 states. [2018-10-01 01:20:43,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:20:43,654 INFO L93 Difference]: Finished difference Result 254 states and 254 transitions. [2018-10-01 01:20:43,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 250 states. [2018-10-01 01:20:43,655 INFO L78 Accepts]: Start accepts. Automaton has 250 states. Word has length 250 [2018-10-01 01:20:43,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:20:43,655 INFO L225 Difference]: With dead ends: 254 [2018-10-01 01:20:43,655 INFO L226 Difference]: Without dead ends: 252 [2018-10-01 01:20:43,656 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 01:20:43,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2018-10-01 01:20:43,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2018-10-01 01:20:43,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2018-10-01 01:20:43,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 252 transitions. [2018-10-01 01:20:43,659 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 252 transitions. Word has length 250 [2018-10-01 01:20:43,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:20:43,659 INFO L480 AbstractCegarLoop]: Abstraction has 252 states and 252 transitions. [2018-10-01 01:20:43,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has 250 states. [2018-10-01 01:20:43,659 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 252 transitions. [2018-10-01 01:20:43,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-01 01:20:43,660 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:20:43,660 INFO L375 BasicCegarLoop]: trace histogram [248, 1, 1, 1] [2018-10-01 01:20:43,660 INFO L423 AbstractCegarLoop]: === Iteration 249 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:20:43,660 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:20:43,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1235754400, now seen corresponding path program 248 times [2018-10-01 01:20:43,660 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:20:43,660 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:20:43,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:43,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:20:43,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:20:46,526 INFO L134 CoverageAnalysis]: Checked inductivity of 30876 backedges. 0 proven. 30876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:46,526 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:20:46,526 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:20:46,534 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:20:46,677 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:20:46,677 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:20:46,685 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:20:47,234 INFO L134 CoverageAnalysis]: Checked inductivity of 30876 backedges. 0 proven. 30876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:47,254 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:20:47,254 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [250, 250] total 250 [2018-10-01 01:20:47,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 251 states [2018-10-01 01:20:47,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 251 interpolants. [2018-10-01 01:20:47,258 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:20:47,258 INFO L87 Difference]: Start difference. First operand 252 states and 252 transitions. Second operand 251 states. [2018-10-01 01:20:50,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:20:50,264 INFO L93 Difference]: Finished difference Result 255 states and 255 transitions. [2018-10-01 01:20:50,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 251 states. [2018-10-01 01:20:50,265 INFO L78 Accepts]: Start accepts. Automaton has 251 states. Word has length 251 [2018-10-01 01:20:50,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:20:50,265 INFO L225 Difference]: With dead ends: 255 [2018-10-01 01:20:50,265 INFO L226 Difference]: Without dead ends: 253 [2018-10-01 01:20:50,265 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 01:20:50,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-10-01 01:20:50,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-10-01 01:20:50,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-10-01 01:20:50,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 253 transitions. [2018-10-01 01:20:50,268 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 253 transitions. Word has length 251 [2018-10-01 01:20:50,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:20:50,268 INFO L480 AbstractCegarLoop]: Abstraction has 253 states and 253 transitions. [2018-10-01 01:20:50,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has 251 states. [2018-10-01 01:20:50,269 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 253 transitions. [2018-10-01 01:20:50,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-10-01 01:20:50,269 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:20:50,269 INFO L375 BasicCegarLoop]: trace histogram [249, 1, 1, 1] [2018-10-01 01:20:50,269 INFO L423 AbstractCegarLoop]: === Iteration 250 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:20:50,270 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:20:50,270 INFO L82 PathProgramCache]: Analyzing trace with hash 346315398, now seen corresponding path program 249 times [2018-10-01 01:20:50,270 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:20:50,270 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:20:50,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:50,270 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:20:50,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:20:52,976 INFO L134 CoverageAnalysis]: Checked inductivity of 31125 backedges. 0 proven. 31125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:52,977 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:20:52,977 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:20:52,984 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:20:53,500 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 126 check-sat command(s) [2018-10-01 01:20:53,500 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:20:53,509 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:20:54,015 INFO L134 CoverageAnalysis]: Checked inductivity of 31125 backedges. 0 proven. 31125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:54,036 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:20:54,036 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [251, 251] total 251 [2018-10-01 01:20:54,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 252 states [2018-10-01 01:20:54,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 252 interpolants. [2018-10-01 01:20:54,041 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:20:54,041 INFO L87 Difference]: Start difference. First operand 253 states and 253 transitions. Second operand 252 states. [2018-10-01 01:20:57,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:20:57,138 INFO L93 Difference]: Finished difference Result 256 states and 256 transitions. [2018-10-01 01:20:57,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 252 states. [2018-10-01 01:20:57,138 INFO L78 Accepts]: Start accepts. Automaton has 252 states. Word has length 252 [2018-10-01 01:20:57,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:20:57,139 INFO L225 Difference]: With dead ends: 256 [2018-10-01 01:20:57,139 INFO L226 Difference]: Without dead ends: 254 [2018-10-01 01:20:57,139 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 01:20:57,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-10-01 01:20:57,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2018-10-01 01:20:57,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2018-10-01 01:20:57,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 254 transitions. [2018-10-01 01:20:57,142 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 254 transitions. Word has length 252 [2018-10-01 01:20:57,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:20:57,142 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 254 transitions. [2018-10-01 01:20:57,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has 252 states. [2018-10-01 01:20:57,142 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 254 transitions. [2018-10-01 01:20:57,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-10-01 01:20:57,143 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:20:57,143 INFO L375 BasicCegarLoop]: trace histogram [250, 1, 1, 1] [2018-10-01 01:20:57,143 INFO L423 AbstractCegarLoop]: === Iteration 251 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:20:57,143 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:20:57,143 INFO L82 PathProgramCache]: Analyzing trace with hash 2145838880, now seen corresponding path program 250 times [2018-10-01 01:20:57,143 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:20:57,143 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:20:57,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:57,144 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:20:57,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:57,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:20:59,975 INFO L134 CoverageAnalysis]: Checked inductivity of 31375 backedges. 0 proven. 31375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:59,975 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:20:59,975 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:20:59,983 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:21:00,182 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:21:00,183 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:21:00,191 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:21:00,695 INFO L134 CoverageAnalysis]: Checked inductivity of 31375 backedges. 0 proven. 31375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:00,716 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:21:00,717 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [252, 252] total 252 [2018-10-01 01:21:00,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 253 states [2018-10-01 01:21:00,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 253 interpolants. [2018-10-01 01:21:00,723 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:21:00,724 INFO L87 Difference]: Start difference. First operand 254 states and 254 transitions. Second operand 253 states. [2018-10-01 01:21:04,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:21:04,189 INFO L93 Difference]: Finished difference Result 257 states and 257 transitions. [2018-10-01 01:21:04,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 253 states. [2018-10-01 01:21:04,189 INFO L78 Accepts]: Start accepts. Automaton has 253 states. Word has length 253 [2018-10-01 01:21:04,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:21:04,190 INFO L225 Difference]: With dead ends: 257 [2018-10-01 01:21:04,190 INFO L226 Difference]: Without dead ends: 255 [2018-10-01 01:21:04,190 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 01:21:04,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-10-01 01:21:04,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-10-01 01:21:04,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-10-01 01:21:04,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 255 transitions. [2018-10-01 01:21:04,193 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 255 transitions. Word has length 253 [2018-10-01 01:21:04,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:21:04,193 INFO L480 AbstractCegarLoop]: Abstraction has 255 states and 255 transitions. [2018-10-01 01:21:04,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has 253 states. [2018-10-01 01:21:04,193 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 255 transitions. [2018-10-01 01:21:04,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-10-01 01:21:04,194 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:21:04,194 INFO L375 BasicCegarLoop]: trace histogram [251, 1, 1, 1] [2018-10-01 01:21:04,194 INFO L423 AbstractCegarLoop]: === Iteration 252 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:21:04,194 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:21:04,194 INFO L82 PathProgramCache]: Analyzing trace with hash 2096491974, now seen corresponding path program 251 times [2018-10-01 01:21:04,194 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:21:04,194 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:21:04,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:04,195 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:21:04,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:04,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:21:07,141 INFO L134 CoverageAnalysis]: Checked inductivity of 31626 backedges. 0 proven. 31626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:07,141 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:21:07,141 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:21:07,149 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:21:07,635 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 127 check-sat command(s) [2018-10-01 01:21:07,635 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:21:07,645 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:21:08,157 INFO L134 CoverageAnalysis]: Checked inductivity of 31626 backedges. 0 proven. 31626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:08,178 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:21:08,178 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [253, 253] total 253 [2018-10-01 01:21:08,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 254 states [2018-10-01 01:21:08,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 254 interpolants. [2018-10-01 01:21:08,184 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:21:08,184 INFO L87 Difference]: Start difference. First operand 255 states and 255 transitions. Second operand 254 states. [2018-10-01 01:21:12,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:21:12,529 INFO L93 Difference]: Finished difference Result 258 states and 258 transitions. [2018-10-01 01:21:12,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 254 states. [2018-10-01 01:21:12,529 INFO L78 Accepts]: Start accepts. Automaton has 254 states. Word has length 254 [2018-10-01 01:21:12,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:21:12,530 INFO L225 Difference]: With dead ends: 258 [2018-10-01 01:21:12,530 INFO L226 Difference]: Without dead ends: 256 [2018-10-01 01:21:12,530 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 01:21:12,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2018-10-01 01:21:12,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2018-10-01 01:21:12,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2018-10-01 01:21:12,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 256 transitions. [2018-10-01 01:21:12,533 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 256 transitions. Word has length 254 [2018-10-01 01:21:12,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:21:12,533 INFO L480 AbstractCegarLoop]: Abstraction has 256 states and 256 transitions. [2018-10-01 01:21:12,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has 254 states. [2018-10-01 01:21:12,533 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 256 transitions. [2018-10-01 01:21:12,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-10-01 01:21:12,534 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:21:12,534 INFO L375 BasicCegarLoop]: trace histogram [252, 1, 1, 1] [2018-10-01 01:21:12,534 INFO L423 AbstractCegarLoop]: === Iteration 253 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:21:12,534 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:21:12,535 INFO L82 PathProgramCache]: Analyzing trace with hash 566737888, now seen corresponding path program 252 times [2018-10-01 01:21:12,535 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:21:12,535 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:21:12,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:12,535 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:21:12,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:21:15,433 INFO L134 CoverageAnalysis]: Checked inductivity of 31878 backedges. 0 proven. 31878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:15,433 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:21:15,433 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:21:15,440 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:21:15,873 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 127 check-sat command(s) [2018-10-01 01:21:15,873 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:21:15,886 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:21:16,428 INFO L134 CoverageAnalysis]: Checked inductivity of 31878 backedges. 0 proven. 31878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:16,449 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:21:16,449 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [254, 254] total 254 [2018-10-01 01:21:16,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 255 states [2018-10-01 01:21:16,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 255 interpolants. [2018-10-01 01:21:16,453 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:21:16,453 INFO L87 Difference]: Start difference. First operand 256 states and 256 transitions. Second operand 255 states. [2018-10-01 01:21:22,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:21:22,717 INFO L93 Difference]: Finished difference Result 259 states and 259 transitions. [2018-10-01 01:21:22,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 255 states. [2018-10-01 01:21:22,718 INFO L78 Accepts]: Start accepts. Automaton has 255 states. Word has length 255 [2018-10-01 01:21:22,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:21:22,718 INFO L225 Difference]: With dead ends: 259 [2018-10-01 01:21:22,718 INFO L226 Difference]: Without dead ends: 257 [2018-10-01 01:21:22,718 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 01:21:22,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-10-01 01:21:22,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2018-10-01 01:21:22,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-10-01 01:21:22,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 257 transitions. [2018-10-01 01:21:22,721 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 257 transitions. Word has length 255 [2018-10-01 01:21:22,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:21:22,722 INFO L480 AbstractCegarLoop]: Abstraction has 257 states and 257 transitions. [2018-10-01 01:21:22,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has 255 states. [2018-10-01 01:21:22,722 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 257 transitions. [2018-10-01 01:21:22,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-10-01 01:21:22,722 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:21:22,722 INFO L375 BasicCegarLoop]: trace histogram [253, 1, 1, 1] [2018-10-01 01:21:22,723 INFO L423 AbstractCegarLoop]: === Iteration 254 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:21:22,723 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:21:22,723 INFO L82 PathProgramCache]: Analyzing trace with hash 389001478, now seen corresponding path program 253 times [2018-10-01 01:21:22,723 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:21:22,723 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:21:22,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:22,723 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:21:22,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:21:25,462 INFO L134 CoverageAnalysis]: Checked inductivity of 32131 backedges. 0 proven. 32131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:25,462 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:21:25,462 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:21:25,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:21:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:21:25,622 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:21:26,117 INFO L134 CoverageAnalysis]: Checked inductivity of 32131 backedges. 0 proven. 32131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:26,137 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:21:26,138 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [255, 255] total 255 [2018-10-01 01:21:26,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 256 states [2018-10-01 01:21:26,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 256 interpolants. [2018-10-01 01:21:26,142 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:21:26,142 INFO L87 Difference]: Start difference. First operand 257 states and 257 transitions. Second operand 256 states. [2018-10-01 01:21:31,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:21:31,918 INFO L93 Difference]: Finished difference Result 260 states and 260 transitions. [2018-10-01 01:21:31,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 256 states. [2018-10-01 01:21:31,918 INFO L78 Accepts]: Start accepts. Automaton has 256 states. Word has length 256 [2018-10-01 01:21:31,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:21:31,919 INFO L225 Difference]: With dead ends: 260 [2018-10-01 01:21:31,919 INFO L226 Difference]: Without dead ends: 258 [2018-10-01 01:21:31,919 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 01:21:31,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-10-01 01:21:31,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2018-10-01 01:21:31,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2018-10-01 01:21:31,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 258 transitions. [2018-10-01 01:21:31,922 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 258 transitions. Word has length 256 [2018-10-01 01:21:31,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:21:31,922 INFO L480 AbstractCegarLoop]: Abstraction has 258 states and 258 transitions. [2018-10-01 01:21:31,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has 256 states. [2018-10-01 01:21:31,922 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 258 transitions. [2018-10-01 01:21:31,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-10-01 01:21:31,923 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:21:31,923 INFO L375 BasicCegarLoop]: trace histogram [254, 1, 1, 1] [2018-10-01 01:21:31,923 INFO L423 AbstractCegarLoop]: === Iteration 255 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:21:31,923 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:21:31,924 INFO L82 PathProgramCache]: Analyzing trace with hash -825859936, now seen corresponding path program 254 times [2018-10-01 01:21:31,924 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:21:31,924 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:21:31,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:31,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:21:31,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:21:34,890 INFO L134 CoverageAnalysis]: Checked inductivity of 32385 backedges. 0 proven. 32385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:34,891 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:21:34,891 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:21:34,898 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:21:35,050 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:21:35,050 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:21:35,058 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:21:35,567 INFO L134 CoverageAnalysis]: Checked inductivity of 32385 backedges. 0 proven. 32385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:35,588 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:21:35,589 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [256, 256] total 256 [2018-10-01 01:21:35,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 257 states [2018-10-01 01:21:35,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 257 interpolants. [2018-10-01 01:21:35,594 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:21:35,595 INFO L87 Difference]: Start difference. First operand 258 states and 258 transitions. Second operand 257 states. [2018-10-01 01:21:41,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:21:41,845 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2018-10-01 01:21:41,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 257 states. [2018-10-01 01:21:41,846 INFO L78 Accepts]: Start accepts. Automaton has 257 states. Word has length 257 [2018-10-01 01:21:41,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:21:41,846 INFO L225 Difference]: With dead ends: 261 [2018-10-01 01:21:41,847 INFO L226 Difference]: Without dead ends: 259 [2018-10-01 01:21:41,847 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 01:21:41,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-10-01 01:21:41,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-10-01 01:21:41,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-10-01 01:21:41,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 259 transitions. [2018-10-01 01:21:41,850 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 259 transitions. Word has length 257 [2018-10-01 01:21:41,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:21:41,850 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 259 transitions. [2018-10-01 01:21:41,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has 257 states. [2018-10-01 01:21:41,850 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 259 transitions. [2018-10-01 01:21:41,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-10-01 01:21:41,851 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:21:41,851 INFO L375 BasicCegarLoop]: trace histogram [255, 1, 1, 1] [2018-10-01 01:21:41,851 INFO L423 AbstractCegarLoop]: === Iteration 256 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:21:41,852 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:21:41,852 INFO L82 PathProgramCache]: Analyzing trace with hash 168141894, now seen corresponding path program 255 times [2018-10-01 01:21:41,852 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:21:41,852 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:21:41,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:41,853 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:21:41,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:42,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:21:44,797 INFO L134 CoverageAnalysis]: Checked inductivity of 32640 backedges. 0 proven. 32640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:44,797 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:21:44,797 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:21:44,808 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:21:45,352 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 129 check-sat command(s) [2018-10-01 01:21:45,352 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:21:45,361 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:21:45,878 INFO L134 CoverageAnalysis]: Checked inductivity of 32640 backedges. 0 proven. 32640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:45,898 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:21:45,899 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [257, 257] total 257 [2018-10-01 01:21:45,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 258 states [2018-10-01 01:21:45,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 258 interpolants. [2018-10-01 01:21:45,905 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:21:45,905 INFO L87 Difference]: Start difference. First operand 259 states and 259 transitions. Second operand 258 states. [2018-10-01 01:21:50,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:21:50,944 INFO L93 Difference]: Finished difference Result 262 states and 262 transitions. [2018-10-01 01:21:50,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 258 states. [2018-10-01 01:21:50,945 INFO L78 Accepts]: Start accepts. Automaton has 258 states. Word has length 258 [2018-10-01 01:21:50,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:21:50,945 INFO L225 Difference]: With dead ends: 262 [2018-10-01 01:21:50,945 INFO L226 Difference]: Without dead ends: 260 [2018-10-01 01:21:50,946 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 256 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time [2018-10-01 01:21:50,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2018-10-01 01:21:50,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2018-10-01 01:21:50,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2018-10-01 01:21:50,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 260 transitions. [2018-10-01 01:21:50,950 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 260 transitions. Word has length 258 [2018-10-01 01:21:50,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:21:50,950 INFO L480 AbstractCegarLoop]: Abstraction has 260 states and 260 transitions. [2018-10-01 01:21:50,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has 258 states. [2018-10-01 01:21:50,950 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 260 transitions. [2018-10-01 01:21:50,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-10-01 01:21:50,951 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:21:50,951 INFO L375 BasicCegarLoop]: trace histogram [256, 1, 1, 1] [2018-10-01 01:21:50,952 INFO L423 AbstractCegarLoop]: === Iteration 257 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:21:50,952 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:21:50,952 INFO L82 PathProgramCache]: Analyzing trace with hash 917427552, now seen corresponding path program 256 times [2018-10-01 01:21:50,952 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:21:50,952 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:21:50,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:50,953 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:21:50,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:21:53,794 INFO L134 CoverageAnalysis]: Checked inductivity of 32896 backedges. 0 proven. 32896 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:53,795 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:21:53,795 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 257 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 257 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:21:53,803 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:21:54,006 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:21:54,006 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:21:54,016 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:21:54,527 INFO L134 CoverageAnalysis]: Checked inductivity of 32896 backedges. 0 proven. 32896 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:54,549 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:21:54,550 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [258, 258] total 258 [2018-10-01 01:21:54,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 259 states [2018-10-01 01:21:54,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 259 interpolants. [2018-10-01 01:21:54,556 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:21:54,556 INFO L87 Difference]: Start difference. First operand 260 states and 260 transitions. Second operand 259 states. [2018-10-01 01:21:59,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:21:59,376 INFO L93 Difference]: Finished difference Result 263 states and 263 transitions. [2018-10-01 01:21:59,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 259 states. [2018-10-01 01:21:59,377 INFO L78 Accepts]: Start accepts. Automaton has 259 states. Word has length 259 [2018-10-01 01:21:59,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:21:59,377 INFO L225 Difference]: With dead ends: 263 [2018-10-01 01:21:59,377 INFO L226 Difference]: Without dead ends: 261 [2018-10-01 01:21:59,378 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time [2018-10-01 01:21:59,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2018-10-01 01:21:59,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2018-10-01 01:21:59,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-10-01 01:21:59,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 261 transitions. [2018-10-01 01:21:59,381 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 261 transitions. Word has length 259 [2018-10-01 01:21:59,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:21:59,381 INFO L480 AbstractCegarLoop]: Abstraction has 261 states and 261 transitions. [2018-10-01 01:21:59,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has 259 states. [2018-10-01 01:21:59,381 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 261 transitions. [2018-10-01 01:21:59,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-10-01 01:21:59,382 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:21:59,382 INFO L375 BasicCegarLoop]: trace histogram [257, 1, 1, 1] [2018-10-01 01:21:59,382 INFO L423 AbstractCegarLoop]: === Iteration 258 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:21:59,382 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:21:59,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1624520826, now seen corresponding path program 257 times [2018-10-01 01:21:59,383 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:21:59,383 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:21:59,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:59,383 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:21:59,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:59,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:22:02,139 INFO L134 CoverageAnalysis]: Checked inductivity of 33153 backedges. 0 proven. 33153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:22:02,140 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:22:02,140 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 258 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 258 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:22:02,148 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:22:02,670 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 130 check-sat command(s) [2018-10-01 01:22:02,670 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:22:02,681 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-10-01 01:22:02,966 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-01 01:22:03,167 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 258 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:22:03,167 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-01 01:22:03,173 WARN L206 ceAbstractionStarter]: Timeout [2018-10-01 01:22:03,173 INFO L202 PluginConnector]: Adding new model Luxembourg.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.10 01:22:03 BoogieIcfgContainer [2018-10-01 01:22:03,173 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-01 01:22:03,174 INFO L168 Benchmark]: Toolchain (without parser) took 806470.71 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 104.9 MB). Free memory was 1.5 GB in the beginning and 1.0 GB in the end (delta: 439.6 MB). Peak memory consumption was 544.5 MB. Max. memory is 7.1 GB. [2018-10-01 01:22:03,176 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-01 01:22:03,176 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.37 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-01 01:22:03,176 INFO L168 Benchmark]: Boogie Preprocessor took 26.51 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-01 01:22:03,177 INFO L168 Benchmark]: RCFGBuilder took 259.27 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-01 01:22:03,177 INFO L168 Benchmark]: TraceAbstraction took 806132.15 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 104.9 MB). Free memory was 1.5 GB in the beginning and 1.0 GB in the end (delta: 418.5 MB). Peak memory consumption was 523.4 MB. Max. memory is 7.1 GB. [2018-10-01 01:22:03,179 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 0.23 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 46.37 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 26.51 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 259.27 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 806132.15 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 104.9 MB). Free memory was 1.5 GB in the beginning and 1.0 GB in the end (delta: 418.5 MB). Peak memory consumption was 523.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 24]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 24). Cancelled while BasicCegarLoop was analyzing trace of length 261 with TraceHistMax 257, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 806.0s OverallTime, 258 OverallIterations, 257 TraceHistogramMax, 399.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 773 SDtfs, 2 SDslu, 13129 SDs, 0 SdLazy, 46539 SolverSat, 641 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 42.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 66818 GetRequests, 33665 SyntacticMatches, 0 SemanticMatches, 33153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 295.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=261occurred in iteration=257, 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: 0.7s AutomataMinimizationTime, 257 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 3.6s SsaConstructionTime, 66.7s SatisfiabilityAnalysisTime, 319.0s InterpolantComputationTime, 67331 NumberOfCodeBlocks, 67331 NumberOfCodeBlocksAsserted, 8812 NumberOfCheckSat, 66818 ConstructedInterpolants, 0 QuantifiedInterpolants, 34413320 SizeOfPredicates, 256 NumberOfNonLiveVariables, 133888 ConjunctsInSsa, 33408 ConjunctsInUnsatCore, 513 InterpolantComputations, 1 PerfectInterpolantSequences, 0/5658112 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Luxembourg.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-01_01-22-03-189.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Luxembourg.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-01_01-22-03-189.csv Completed graceful shutdown