java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_2.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2eb0a67 [2018-10-03 09:08:43,598 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-03 09:08:43,602 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-03 09:08:43,620 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-03 09:08:43,620 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-03 09:08:43,621 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-03 09:08:43,623 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-03 09:08:43,624 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-03 09:08:43,626 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-03 09:08:43,627 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-03 09:08:43,628 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-03 09:08:43,628 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-03 09:08:43,629 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-03 09:08:43,630 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-03 09:08:43,632 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-03 09:08:43,632 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-03 09:08:43,633 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-03 09:08:43,635 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-03 09:08:43,637 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-03 09:08:43,639 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-03 09:08:43,640 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-03 09:08:43,642 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-03 09:08:43,644 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-03 09:08:43,654 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 [2018-10-03 09:08:43,677 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-03 09:08:43,677 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-03 09:08:43,678 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-03 09:08:43,678 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-03 09:08:43,679 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-03 09:08:43,679 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-03 09:08:43,680 INFO L133 SettingsManager]: * Use SBE=true [2018-10-03 09:08:43,680 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-03 09:08:43,680 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-03 09:08:43,680 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-03 09:08:43,680 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-03 09:08:43,681 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-03 09:08:43,681 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-03 09:08:43,681 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-03 09:08:43,681 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-03 09:08:43,682 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-03 09:08:43,682 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-03 09:08:43,682 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-03 09:08:43,682 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-03 09:08:43,682 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-03 09:08:43,683 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-03 09:08:43,683 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-03 09:08:43,683 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-03 09:08:43,683 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-03 09:08:43,683 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-03 09:08:43,684 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-03 09:08:43,684 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-03 09:08:43,684 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-03 09:08:43,684 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-03 09:08:43,684 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-03 09:08:43,685 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-03 09:08:43,729 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-03 09:08:43,742 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-03 09:08:43,746 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-03 09:08:43,748 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-03 09:08:43,749 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-03 09:08:43,749 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_2.i_3.bpl [2018-10-03 09:08:43,750 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_2.i_3.bpl' [2018-10-03 09:08:43,801 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-03 09:08:43,805 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-03 09:08:43,806 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-03 09:08:43,806 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-03 09:08:43,806 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-03 09:08:43,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:08:43" (1/1) ... [2018-10-03 09:08:43,842 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:08:43" (1/1) ... [2018-10-03 09:08:43,849 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-03 09:08:43,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-03 09:08:43,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-03 09:08:43,850 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-03 09:08:43,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:08:43" (1/1) ... [2018-10-03 09:08:43,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:08:43" (1/1) ... [2018-10-03 09:08:43,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:08:43" (1/1) ... [2018-10-03 09:08:43,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:08:43" (1/1) ... [2018-10-03 09:08:43,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:08:43" (1/1) ... [2018-10-03 09:08:43,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:08:43" (1/1) ... [2018-10-03 09:08:43,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:08:43" (1/1) ... [2018-10-03 09:08:43,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-03 09:08:43,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-03 09:08:43,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-03 09:08:43,874 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-03 09:08:43,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:08:43" (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 [2018-10-03 09:08:43,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-03 09:08:43,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-03 09:08:44,140 INFO L340 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-03 09:08:44,141 INFO L202 PluginConnector]: Adding new model count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 09:08:44 BoogieIcfgContainer [2018-10-03 09:08:44,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-03 09:08:44,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-03 09:08:44,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-03 09:08:44,145 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-03 09:08:44,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:08:43" (1/2) ... [2018-10-03 09:08:44,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49cafb72 and model type count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 09:08:44, skipping insertion in model container [2018-10-03 09:08:44,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 09:08:44" (2/2) ... [2018-10-03 09:08:44,149 INFO L112 eAbstractionObserver]: Analyzing ICFG count_by_2.i_3.bpl [2018-10-03 09:08:44,159 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-03 09:08:44,168 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-03 09:08:44,221 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-03 09:08:44,222 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-03 09:08:44,222 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-03 09:08:44,222 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-03 09:08:44,222 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-03 09:08:44,223 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-03 09:08:44,223 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-03 09:08:44,223 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-03 09:08:44,223 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-03 09:08:44,239 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-10-03 09:08:44,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-03 09:08:44,246 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:44,247 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-03 09:08:44,248 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:44,254 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:44,255 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-10-03 09:08:44,257 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:44,258 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:44,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:44,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:44,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:44,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:44,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:44,410 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-03 09:08:44,410 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-03 09:08:44,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-03 09:08:44,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-03 09:08:44,432 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:44,434 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-10-03 09:08:44,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:44,474 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-10-03 09:08:44,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-03 09:08:44,476 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-10-03 09:08:44,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:44,488 INFO L225 Difference]: With dead ends: 11 [2018-10-03 09:08:44,489 INFO L226 Difference]: Without dead ends: 7 [2018-10-03 09:08:44,492 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 1 [2018-10-03 09:08:44,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-03 09:08:44,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-03 09:08:44,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-03 09:08:44,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-03 09:08:44,526 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-10-03 09:08:44,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:44,526 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-03 09:08:44,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-03 09:08:44,527 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-03 09:08:44,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-03 09:08:44,527 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:44,527 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-10-03 09:08:44,528 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:44,528 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:44,528 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-10-03 09:08:44,528 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:44,529 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:44,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:44,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:44,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:44,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:44,659 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:44,659 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:44,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:44,708 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:44,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:44,786 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:44,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-03 09:08:44,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-03 09:08:44,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-03 09:08:44,788 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:44,788 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2018-10-03 09:08:44,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:44,837 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-03 09:08:44,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-03 09:08:44,838 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-10-03 09:08:44,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:44,838 INFO L225 Difference]: With dead ends: 11 [2018-10-03 09:08:44,839 INFO L226 Difference]: Without dead ends: 9 [2018-10-03 09:08:44,839 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 2 [2018-10-03 09:08:44,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-03 09:08:44,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-03 09:08:44,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-03 09:08:44,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-03 09:08:44,842 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-10-03 09:08:44,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:44,843 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-03 09:08:44,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-03 09:08:44,843 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-03 09:08:44,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-03 09:08:44,844 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:44,844 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-10-03 09:08:44,844 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:44,844 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:44,845 INFO L82 PathProgramCache]: Analyzing trace with hash 198673595, now seen corresponding path program 2 times [2018-10-03 09:08:44,845 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:44,845 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:44,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:44,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:44,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:44,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:44,934 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:44,934 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:44,934 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:44,949 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:08:44,960 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:08:44,961 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:44,962 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:45,008 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:45,032 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:45,032 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-03 09:08:45,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-03 09:08:45,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-03 09:08:45,033 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:45,033 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-10-03 09:08:45,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:45,052 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-03 09:08:45,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-03 09:08:45,053 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-10-03 09:08:45,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:45,053 INFO L225 Difference]: With dead ends: 13 [2018-10-03 09:08:45,054 INFO L226 Difference]: Without dead ends: 11 [2018-10-03 09:08:45,054 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 3 [2018-10-03 09:08:45,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-03 09:08:45,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-03 09:08:45,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-03 09:08:45,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-03 09:08:45,058 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-10-03 09:08:45,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:45,059 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-03 09:08:45,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-03 09:08:45,059 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-03 09:08:45,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-03 09:08:45,060 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:45,060 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-10-03 09:08:45,060 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:45,060 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:45,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1946815861, now seen corresponding path program 3 times [2018-10-03 09:08:45,061 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:45,061 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:45,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:45,062 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:45,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:45,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:45,181 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:45,181 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:45,181 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:45,193 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:08:45,247 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-03 09:08:45,247 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:45,250 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:45,314 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:45,336 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:45,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-03 09:08:45,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-03 09:08:45,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-03 09:08:45,338 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:45,338 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2018-10-03 09:08:45,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:45,475 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-03 09:08:45,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-03 09:08:45,475 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-10-03 09:08:45,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:45,476 INFO L225 Difference]: With dead ends: 15 [2018-10-03 09:08:45,476 INFO L226 Difference]: Without dead ends: 13 [2018-10-03 09:08:45,476 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 4 [2018-10-03 09:08:45,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-03 09:08:45,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-03 09:08:45,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-03 09:08:45,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-03 09:08:45,480 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-10-03 09:08:45,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:45,481 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-03 09:08:45,481 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-03 09:08:45,481 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-03 09:08:45,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-03 09:08:45,482 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:45,482 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1] [2018-10-03 09:08:45,482 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:45,483 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:45,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1715646545, now seen corresponding path program 4 times [2018-10-03 09:08:45,483 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:45,483 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:45,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:45,485 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:45,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:45,677 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:45,677 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:45,677 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:45,689 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:08:45,711 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:08:45,711 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:45,713 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:45,779 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:45,800 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:45,800 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-03 09:08:45,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-03 09:08:45,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-03 09:08:45,801 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:45,803 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2018-10-03 09:08:45,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:45,835 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-03 09:08:45,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-03 09:08:45,836 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-10-03 09:08:45,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:45,836 INFO L225 Difference]: With dead ends: 17 [2018-10-03 09:08:45,837 INFO L226 Difference]: Without dead ends: 15 [2018-10-03 09:08:45,837 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 5 [2018-10-03 09:08:45,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-03 09:08:45,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-03 09:08:45,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-03 09:08:45,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-03 09:08:45,841 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-10-03 09:08:45,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:45,842 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-03 09:08:45,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-03 09:08:45,842 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-03 09:08:45,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-03 09:08:45,843 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:45,843 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1] [2018-10-03 09:08:45,843 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:45,844 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:45,844 INFO L82 PathProgramCache]: Analyzing trace with hash 531164009, now seen corresponding path program 5 times [2018-10-03 09:08:45,844 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:45,844 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:45,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:45,845 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:45,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:45,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:46,031 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:46,031 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:46,031 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 [2018-10-03 09:08:46,047 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:08:46,063 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-03 09:08:46,063 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:46,064 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:46,134 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:46,155 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:46,155 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-03 09:08:46,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-03 09:08:46,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-03 09:08:46,156 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:46,156 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2018-10-03 09:08:46,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:46,183 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-03 09:08:46,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-03 09:08:46,185 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-10-03 09:08:46,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:46,186 INFO L225 Difference]: With dead ends: 19 [2018-10-03 09:08:46,186 INFO L226 Difference]: Without dead ends: 17 [2018-10-03 09:08:46,187 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 6 [2018-10-03 09:08:46,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-03 09:08:46,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-03 09:08:46,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-03 09:08:46,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-03 09:08:46,191 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-10-03 09:08:46,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:46,191 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-03 09:08:46,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-03 09:08:46,192 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-03 09:08:46,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-03 09:08:46,192 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:46,192 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1] [2018-10-03 09:08:46,193 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:46,193 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:46,193 INFO L82 PathProgramCache]: Analyzing trace with hash -652443485, now seen corresponding path program 6 times [2018-10-03 09:08:46,193 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:46,193 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:46,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:46,194 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:46,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:46,308 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:46,309 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:46,309 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:46,326 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:08:46,344 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-03 09:08:46,344 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:46,346 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:46,475 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:46,497 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:46,497 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-03 09:08:46,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-03 09:08:46,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-03 09:08:46,498 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:46,498 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 9 states. [2018-10-03 09:08:46,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:46,522 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-03 09:08:46,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-03 09:08:46,523 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-10-03 09:08:46,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:46,524 INFO L225 Difference]: With dead ends: 21 [2018-10-03 09:08:46,524 INFO L226 Difference]: Without dead ends: 19 [2018-10-03 09:08:46,525 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 7 [2018-10-03 09:08:46,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-03 09:08:46,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-03 09:08:46,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-03 09:08:46,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-03 09:08:46,529 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-10-03 09:08:46,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:46,529 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-03 09:08:46,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-03 09:08:46,529 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-03 09:08:46,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-03 09:08:46,530 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:46,530 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1] [2018-10-03 09:08:46,530 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:46,531 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:46,531 INFO L82 PathProgramCache]: Analyzing trace with hash 67088221, now seen corresponding path program 7 times [2018-10-03 09:08:46,531 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:46,531 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:46,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:46,532 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:46,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:47,067 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:47,068 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:47,068 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:47,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:47,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:47,111 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:47,265 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:47,287 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:47,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-03 09:08:47,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-03 09:08:47,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-03 09:08:47,288 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:47,289 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 10 states. [2018-10-03 09:08:47,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:47,315 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-03 09:08:47,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-03 09:08:47,317 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-10-03 09:08:47,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:47,318 INFO L225 Difference]: With dead ends: 23 [2018-10-03 09:08:47,318 INFO L226 Difference]: Without dead ends: 21 [2018-10-03 09:08:47,319 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime 8 [2018-10-03 09:08:47,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-03 09:08:47,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-03 09:08:47,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-03 09:08:47,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-03 09:08:47,323 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2018-10-03 09:08:47,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:47,323 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-03 09:08:47,323 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-03 09:08:47,323 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-03 09:08:47,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-03 09:08:47,324 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:47,324 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1] [2018-10-03 09:08:47,324 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:47,324 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:47,325 INFO L82 PathProgramCache]: Analyzing trace with hash 47323031, now seen corresponding path program 8 times [2018-10-03 09:08:47,325 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:47,325 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:47,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:47,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:47,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:47,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:47,484 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:47,485 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:47,485 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 [2018-10-03 09:08:47,500 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:08:47,528 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:08:47,528 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:47,530 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:47,637 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:47,658 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:47,659 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-03 09:08:47,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-03 09:08:47,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-03 09:08:47,660 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:47,660 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 11 states. [2018-10-03 09:08:47,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:47,719 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-03 09:08:47,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-03 09:08:47,721 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-10-03 09:08:47,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:47,722 INFO L225 Difference]: With dead ends: 25 [2018-10-03 09:08:47,723 INFO L226 Difference]: Without dead ends: 23 [2018-10-03 09:08:47,723 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 9 [2018-10-03 09:08:47,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-03 09:08:47,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-03 09:08:47,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-03 09:08:47,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-03 09:08:47,729 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2018-10-03 09:08:47,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:47,729 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-03 09:08:47,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-03 09:08:47,730 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-03 09:08:47,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-03 09:08:47,730 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:47,730 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1] [2018-10-03 09:08:47,731 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:47,731 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:47,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1767155375, now seen corresponding path program 9 times [2018-10-03 09:08:47,731 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:47,731 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:47,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:47,732 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:47,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:47,934 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:47,935 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:47,935 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:47,946 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:08:47,971 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-10-03 09:08:47,972 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:47,973 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:48,051 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:48,072 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:48,072 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-03 09:08:48,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-03 09:08:48,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-03 09:08:48,073 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:48,073 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 12 states. [2018-10-03 09:08:48,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:48,117 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-03 09:08:48,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-03 09:08:48,119 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-10-03 09:08:48,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:48,119 INFO L225 Difference]: With dead ends: 27 [2018-10-03 09:08:48,119 INFO L226 Difference]: Without dead ends: 25 [2018-10-03 09:08:48,120 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 10 [2018-10-03 09:08:48,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-03 09:08:48,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-03 09:08:48,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-03 09:08:48,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-10-03 09:08:48,125 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2018-10-03 09:08:48,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:48,125 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-10-03 09:08:48,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-03 09:08:48,125 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-10-03 09:08:48,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-03 09:08:48,126 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:48,126 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1] [2018-10-03 09:08:48,126 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:48,127 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:48,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1724181365, now seen corresponding path program 10 times [2018-10-03 09:08:48,127 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:48,127 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:48,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:48,128 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:48,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:48,301 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:48,302 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:48,302 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:48,317 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:08:48,328 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:08:48,329 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:48,332 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:48,425 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:48,445 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:48,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-03 09:08:48,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-03 09:08:48,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-03 09:08:48,446 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:48,446 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 13 states. [2018-10-03 09:08:48,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:48,491 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-03 09:08:48,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-03 09:08:48,492 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2018-10-03 09:08:48,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:48,493 INFO L225 Difference]: With dead ends: 29 [2018-10-03 09:08:48,493 INFO L226 Difference]: Without dead ends: 27 [2018-10-03 09:08:48,494 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 11 [2018-10-03 09:08:48,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-03 09:08:48,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-03 09:08:48,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-03 09:08:48,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-03 09:08:48,499 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2018-10-03 09:08:48,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:48,499 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-03 09:08:48,499 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-03 09:08:48,500 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-03 09:08:48,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-03 09:08:48,500 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:48,501 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1] [2018-10-03 09:08:48,501 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:48,501 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:48,501 INFO L82 PathProgramCache]: Analyzing trace with hash 919136581, now seen corresponding path program 11 times [2018-10-03 09:08:48,501 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:48,502 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:48,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:48,503 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:48,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:48,639 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:48,640 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:48,640 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:48,648 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:08:48,672 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-10-03 09:08:48,673 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:48,676 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:48,748 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:48,778 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:48,778 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-03 09:08:48,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-03 09:08:48,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-03 09:08:48,779 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:48,780 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 14 states. [2018-10-03 09:08:48,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:48,891 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-03 09:08:48,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-03 09:08:48,893 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2018-10-03 09:08:48,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:48,894 INFO L225 Difference]: With dead ends: 31 [2018-10-03 09:08:48,894 INFO L226 Difference]: Without dead ends: 29 [2018-10-03 09:08:48,895 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 12 [2018-10-03 09:08:48,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-03 09:08:48,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-03 09:08:48,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-03 09:08:48,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-10-03 09:08:48,902 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2018-10-03 09:08:48,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:48,902 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-10-03 09:08:48,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-03 09:08:48,902 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-10-03 09:08:48,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-03 09:08:48,903 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:48,904 INFO L375 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1] [2018-10-03 09:08:48,905 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:48,905 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:48,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1472956545, now seen corresponding path program 12 times [2018-10-03 09:08:48,905 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:48,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:48,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:48,906 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:48,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:49,099 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:49,099 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:49,100 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:49,108 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:08:49,124 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-03 09:08:49,124 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:49,126 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:49,338 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:49,359 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:49,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-10-03 09:08:49,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-03 09:08:49,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-03 09:08:49,360 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:49,360 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 15 states. [2018-10-03 09:08:49,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:49,396 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-03 09:08:49,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-03 09:08:49,399 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2018-10-03 09:08:49,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:49,400 INFO L225 Difference]: With dead ends: 33 [2018-10-03 09:08:49,400 INFO L226 Difference]: Without dead ends: 31 [2018-10-03 09:08:49,401 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.0s impTime 13 [2018-10-03 09:08:49,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-03 09:08:49,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-03 09:08:49,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-03 09:08:49,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-03 09:08:49,405 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2018-10-03 09:08:49,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:49,406 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-03 09:08:49,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-03 09:08:49,406 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-03 09:08:49,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-03 09:08:49,407 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:49,407 INFO L375 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1] [2018-10-03 09:08:49,407 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:49,407 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:49,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1828020025, now seen corresponding path program 13 times [2018-10-03 09:08:49,408 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:49,408 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:49,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:49,409 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:49,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:49,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:49,609 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:49,610 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:49,610 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:49,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:49,644 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:49,767 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:49,788 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:49,788 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-03 09:08:49,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-03 09:08:49,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-03 09:08:49,789 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:49,789 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 16 states. [2018-10-03 09:08:49,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:49,860 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-03 09:08:49,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-03 09:08:49,861 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2018-10-03 09:08:49,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:49,862 INFO L225 Difference]: With dead ends: 35 [2018-10-03 09:08:49,863 INFO L226 Difference]: Without dead ends: 33 [2018-10-03 09:08:49,863 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 14 [2018-10-03 09:08:49,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-03 09:08:49,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-03 09:08:49,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-03 09:08:49,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-10-03 09:08:49,868 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2018-10-03 09:08:49,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:49,868 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-10-03 09:08:49,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-03 09:08:49,868 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-10-03 09:08:49,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-03 09:08:49,869 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:49,870 INFO L375 BasicCegarLoop]: trace histogram [15, 14, 1, 1, 1] [2018-10-03 09:08:49,870 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:49,870 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:49,870 INFO L82 PathProgramCache]: Analyzing trace with hash 85672051, now seen corresponding path program 14 times [2018-10-03 09:08:49,870 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:49,871 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:49,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:49,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:49,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:50,098 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:50,098 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:50,098 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 [2018-10-03 09:08:50,128 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:08:50,170 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:08:50,171 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:50,173 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:50,280 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:50,302 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:50,303 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-03 09:08:50,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-03 09:08:50,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-03 09:08:50,303 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:50,303 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 17 states. [2018-10-03 09:08:50,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:50,343 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-03 09:08:50,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-03 09:08:50,344 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 32 [2018-10-03 09:08:50,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:50,345 INFO L225 Difference]: With dead ends: 37 [2018-10-03 09:08:50,345 INFO L226 Difference]: Without dead ends: 35 [2018-10-03 09:08:50,346 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 15 [2018-10-03 09:08:50,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-03 09:08:50,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-03 09:08:50,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-03 09:08:50,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-03 09:08:50,351 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-10-03 09:08:50,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:50,351 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-03 09:08:50,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-03 09:08:50,351 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-03 09:08:50,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-03 09:08:50,352 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:50,352 INFO L375 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1] [2018-10-03 09:08:50,352 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:50,352 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:50,353 INFO L82 PathProgramCache]: Analyzing trace with hash 726514477, now seen corresponding path program 15 times [2018-10-03 09:08:50,353 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:50,353 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:50,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:50,354 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:50,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:50,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:50,645 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:50,646 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:50,646 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 [2018-10-03 09:08:50,654 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:08:50,691 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-10-03 09:08:50,692 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:50,693 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:50,850 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:50,870 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:50,870 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-03 09:08:50,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-03 09:08:50,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-03 09:08:50,871 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:50,871 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 18 states. [2018-10-03 09:08:51,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:51,061 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-03 09:08:51,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-03 09:08:51,064 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 34 [2018-10-03 09:08:51,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:51,065 INFO L225 Difference]: With dead ends: 39 [2018-10-03 09:08:51,065 INFO L226 Difference]: Without dead ends: 37 [2018-10-03 09:08:51,065 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 16 [2018-10-03 09:08:51,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-03 09:08:51,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-03 09:08:51,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-03 09:08:51,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-10-03 09:08:51,070 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 34 [2018-10-03 09:08:51,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:51,070 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-10-03 09:08:51,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-03 09:08:51,071 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-10-03 09:08:51,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-03 09:08:51,072 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:51,072 INFO L375 BasicCegarLoop]: trace histogram [17, 16, 1, 1, 1] [2018-10-03 09:08:51,072 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:51,072 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:51,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1899204761, now seen corresponding path program 16 times [2018-10-03 09:08:51,072 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:51,073 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:51,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:51,074 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:51,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:51,397 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:51,398 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:51,398 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 [2018-10-03 09:08:51,406 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:08:51,421 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:08:51,422 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:51,424 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:51,525 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:51,547 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:51,547 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-03 09:08:51,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-03 09:08:51,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-03 09:08:51,548 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:51,548 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 19 states. [2018-10-03 09:08:51,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:51,616 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-03 09:08:51,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-03 09:08:51,617 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 36 [2018-10-03 09:08:51,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:51,618 INFO L225 Difference]: With dead ends: 41 [2018-10-03 09:08:51,618 INFO L226 Difference]: Without dead ends: 39 [2018-10-03 09:08:51,619 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime 17 [2018-10-03 09:08:51,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-03 09:08:51,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-03 09:08:51,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-03 09:08:51,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-03 09:08:51,624 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 36 [2018-10-03 09:08:51,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:51,624 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-03 09:08:51,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-03 09:08:51,625 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-03 09:08:51,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-03 09:08:51,625 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:51,626 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1] [2018-10-03 09:08:51,626 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:51,626 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:51,626 INFO L82 PathProgramCache]: Analyzing trace with hash 225377569, now seen corresponding path program 17 times [2018-10-03 09:08:51,627 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:51,627 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:51,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:51,628 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:51,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:51,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:52,046 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:52,047 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:52,047 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:52,058 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:08:52,076 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-10-03 09:08:52,077 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:52,078 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:52,562 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:52,584 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:52,585 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-03 09:08:52,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-03 09:08:52,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-03 09:08:52,585 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:52,585 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 20 states. [2018-10-03 09:08:52,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:52,623 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-03 09:08:52,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-03 09:08:52,623 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2018-10-03 09:08:52,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:52,624 INFO L225 Difference]: With dead ends: 43 [2018-10-03 09:08:52,624 INFO L226 Difference]: Without dead ends: 41 [2018-10-03 09:08:52,625 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.2s impTime 18 [2018-10-03 09:08:52,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-03 09:08:52,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-03 09:08:52,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-03 09:08:52,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-10-03 09:08:52,630 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 38 [2018-10-03 09:08:52,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:52,630 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-10-03 09:08:52,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-03 09:08:52,631 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-10-03 09:08:52,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-03 09:08:52,631 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:52,631 INFO L375 BasicCegarLoop]: trace histogram [19, 18, 1, 1, 1] [2018-10-03 09:08:52,632 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:52,632 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:52,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1839531099, now seen corresponding path program 18 times [2018-10-03 09:08:52,632 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:52,632 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:52,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:52,633 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:52,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:52,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:53,159 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:53,159 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:53,160 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 [2018-10-03 09:08:53,167 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:08:53,230 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-03 09:08:53,231 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:53,235 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:53,452 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:53,490 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:53,490 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-10-03 09:08:53,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-03 09:08:53,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-03 09:08:53,491 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:53,491 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 21 states. [2018-10-03 09:08:53,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:53,787 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-03 09:08:53,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-03 09:08:53,788 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 40 [2018-10-03 09:08:53,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:53,789 INFO L225 Difference]: With dead ends: 45 [2018-10-03 09:08:53,789 INFO L226 Difference]: Without dead ends: 43 [2018-10-03 09:08:53,790 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.3s impTime 19 [2018-10-03 09:08:53,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-03 09:08:53,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-03 09:08:53,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-03 09:08:53,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-03 09:08:53,794 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 40 [2018-10-03 09:08:53,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:53,794 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-03 09:08:53,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-03 09:08:53,794 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-03 09:08:53,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-03 09:08:53,795 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:53,795 INFO L375 BasicCegarLoop]: trace histogram [20, 19, 1, 1, 1] [2018-10-03 09:08:53,795 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:53,796 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:53,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1737087723, now seen corresponding path program 19 times [2018-10-03 09:08:53,796 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:53,796 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:53,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:53,797 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:53,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:54,656 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:54,656 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:54,656 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:08:54,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:54,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:54,678 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:54,751 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:54,772 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:54,772 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-03 09:08:54,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-03 09:08:54,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-03 09:08:54,773 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:54,773 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 22 states. [2018-10-03 09:08:54,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:54,849 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-03 09:08:54,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-03 09:08:54,850 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2018-10-03 09:08:54,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:54,850 INFO L225 Difference]: With dead ends: 47 [2018-10-03 09:08:54,850 INFO L226 Difference]: Without dead ends: 45 [2018-10-03 09:08:54,851 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime 20 [2018-10-03 09:08:54,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-03 09:08:54,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-03 09:08:54,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-03 09:08:54,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-10-03 09:08:54,856 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 42 [2018-10-03 09:08:54,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:54,857 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-10-03 09:08:54,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-03 09:08:54,857 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-10-03 09:08:54,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-03 09:08:54,858 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:54,858 INFO L375 BasicCegarLoop]: trace histogram [21, 20, 1, 1, 1] [2018-10-03 09:08:54,858 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:54,858 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:54,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1401028431, now seen corresponding path program 20 times [2018-10-03 09:08:54,859 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:54,859 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:54,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:54,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:54,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:54,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:55,539 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:55,539 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:55,539 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:55,551 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:08:55,564 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:08:55,565 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:55,567 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:55,713 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:55,733 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:55,733 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-03 09:08:55,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-03 09:08:55,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-03 09:08:55,734 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:55,734 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 23 states. [2018-10-03 09:08:55,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:55,840 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-03 09:08:55,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-03 09:08:55,841 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 44 [2018-10-03 09:08:55,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:55,841 INFO L225 Difference]: With dead ends: 49 [2018-10-03 09:08:55,841 INFO L226 Difference]: Without dead ends: 47 [2018-10-03 09:08:55,841 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime 21 [2018-10-03 09:08:55,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-03 09:08:55,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-03 09:08:55,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-03 09:08:55,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-03 09:08:55,847 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 44 [2018-10-03 09:08:55,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:55,847 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-03 09:08:55,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-03 09:08:55,847 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-03 09:08:55,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-03 09:08:55,848 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:55,848 INFO L375 BasicCegarLoop]: trace histogram [22, 21, 1, 1, 1] [2018-10-03 09:08:55,848 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:55,848 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:55,849 INFO L82 PathProgramCache]: Analyzing trace with hash 2063610633, now seen corresponding path program 21 times [2018-10-03 09:08:55,849 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:55,849 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:55,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:55,850 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:55,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:55,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:56,232 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:56,232 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:56,232 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 [2018-10-03 09:08:56,239 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:08:56,260 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-10-03 09:08:56,261 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:56,263 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:56,376 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:56,397 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:56,397 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-03 09:08:56,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-03 09:08:56,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-03 09:08:56,397 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:56,398 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 24 states. [2018-10-03 09:08:56,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:56,543 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-03 09:08:56,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-03 09:08:56,544 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2018-10-03 09:08:56,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:56,544 INFO L225 Difference]: With dead ends: 51 [2018-10-03 09:08:56,544 INFO L226 Difference]: Without dead ends: 49 [2018-10-03 09:08:56,545 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 22 [2018-10-03 09:08:56,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-03 09:08:56,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-03 09:08:56,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-03 09:08:56,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-10-03 09:08:56,548 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 46 [2018-10-03 09:08:56,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:56,548 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-10-03 09:08:56,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-03 09:08:56,548 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-10-03 09:08:56,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-03 09:08:56,549 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:56,549 INFO L375 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1] [2018-10-03 09:08:56,549 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:56,549 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:56,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1145020349, now seen corresponding path program 22 times [2018-10-03 09:08:56,550 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:56,550 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:56,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:56,550 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:56,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:56,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:56,833 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:56,833 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:56,833 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:56,841 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:08:56,855 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:08:56,855 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:56,859 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:56,964 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:56,984 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:56,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-10-03 09:08:56,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-03 09:08:56,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-03 09:08:56,985 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:56,985 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 25 states. [2018-10-03 09:08:57,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:57,038 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-03 09:08:57,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-03 09:08:57,038 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 48 [2018-10-03 09:08:57,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:57,039 INFO L225 Difference]: With dead ends: 53 [2018-10-03 09:08:57,039 INFO L226 Difference]: Without dead ends: 51 [2018-10-03 09:08:57,040 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 23 [2018-10-03 09:08:57,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-03 09:08:57,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-03 09:08:57,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-03 09:08:57,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-03 09:08:57,045 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-10-03 09:08:57,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:57,045 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-03 09:08:57,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-03 09:08:57,045 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-03 09:08:57,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-03 09:08:57,046 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:57,046 INFO L375 BasicCegarLoop]: trace histogram [24, 23, 1, 1, 1] [2018-10-03 09:08:57,046 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:57,046 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:57,047 INFO L82 PathProgramCache]: Analyzing trace with hash -852875523, now seen corresponding path program 23 times [2018-10-03 09:08:57,047 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:57,047 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:57,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:57,048 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:57,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:57,680 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:57,680 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:57,680 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:57,688 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:08:57,713 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-10-03 09:08:57,713 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:57,714 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:57,866 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:57,887 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:57,887 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-03 09:08:57,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-03 09:08:57,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-03 09:08:57,888 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:57,888 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 26 states. [2018-10-03 09:08:57,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:57,940 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-03 09:08:57,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-03 09:08:57,940 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 50 [2018-10-03 09:08:57,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:57,941 INFO L225 Difference]: With dead ends: 55 [2018-10-03 09:08:57,941 INFO L226 Difference]: Without dead ends: 53 [2018-10-03 09:08:57,941 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime 24 [2018-10-03 09:08:57,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-03 09:08:57,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-03 09:08:57,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-03 09:08:57,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-10-03 09:08:57,944 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 50 [2018-10-03 09:08:57,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:57,945 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-10-03 09:08:57,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-03 09:08:57,945 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-10-03 09:08:57,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-03 09:08:57,945 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:57,946 INFO L375 BasicCegarLoop]: trace histogram [25, 24, 1, 1, 1] [2018-10-03 09:08:57,946 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:57,946 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:57,946 INFO L82 PathProgramCache]: Analyzing trace with hash 725428023, now seen corresponding path program 24 times [2018-10-03 09:08:57,946 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:57,946 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:57,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:57,947 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:57,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:57,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:58,472 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:58,472 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:58,472 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 [2018-10-03 09:08:58,479 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:08:58,507 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-03 09:08:58,507 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:58,508 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:58,711 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:58,731 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:58,731 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-10-03 09:08:58,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-03 09:08:58,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-03 09:08:58,732 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:58,732 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 27 states. [2018-10-03 09:08:58,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:58,776 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-03 09:08:58,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-03 09:08:58,777 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 52 [2018-10-03 09:08:58,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:58,778 INFO L225 Difference]: With dead ends: 57 [2018-10-03 09:08:58,778 INFO L226 Difference]: Without dead ends: 55 [2018-10-03 09:08:58,778 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime 25 [2018-10-03 09:08:58,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-03 09:08:58,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-03 09:08:58,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-03 09:08:58,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-03 09:08:58,782 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 52 [2018-10-03 09:08:58,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:58,783 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-03 09:08:58,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-03 09:08:58,783 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-03 09:08:58,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-03 09:08:58,783 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:58,783 INFO L375 BasicCegarLoop]: trace histogram [26, 25, 1, 1, 1] [2018-10-03 09:08:58,784 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:58,784 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:58,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1351680241, now seen corresponding path program 25 times [2018-10-03 09:08:58,784 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:58,784 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:58,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:58,785 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:58,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:58,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:59,341 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:59,341 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:59,341 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:59,349 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:59,377 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:59,505 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:59,526 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:59,526 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-03 09:08:59,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-03 09:08:59,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-03 09:08:59,527 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:59,527 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 28 states. [2018-10-03 09:08:59,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:59,584 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-10-03 09:08:59,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-03 09:08:59,584 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2018-10-03 09:08:59,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:59,585 INFO L225 Difference]: With dead ends: 59 [2018-10-03 09:08:59,585 INFO L226 Difference]: Without dead ends: 57 [2018-10-03 09:08:59,586 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime 26 [2018-10-03 09:08:59,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-03 09:08:59,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-03 09:08:59,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-03 09:08:59,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-10-03 09:08:59,590 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 54 [2018-10-03 09:08:59,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:59,590 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-10-03 09:08:59,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-03 09:08:59,591 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-10-03 09:08:59,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-03 09:08:59,591 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:59,591 INFO L375 BasicCegarLoop]: trace histogram [27, 26, 1, 1, 1] [2018-10-03 09:08:59,592 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:59,592 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:59,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1884640299, now seen corresponding path program 26 times [2018-10-03 09:08:59,592 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:59,592 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:59,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:59,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:59,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:59,970 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:59,970 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:59,970 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:59,979 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:08:59,997 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:08:59,997 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:00,000 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:00,131 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:00,153 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:00,153 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-03 09:09:00,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-03 09:09:00,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-03 09:09:00,154 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:00,154 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 29 states. [2018-10-03 09:09:00,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:00,221 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-03 09:09:00,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-03 09:09:00,222 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 56 [2018-10-03 09:09:00,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:00,222 INFO L225 Difference]: With dead ends: 61 [2018-10-03 09:09:00,222 INFO L226 Difference]: Without dead ends: 59 [2018-10-03 09:09:00,223 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 27 [2018-10-03 09:09:00,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-03 09:09:00,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-03 09:09:00,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-03 09:09:00,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-03 09:09:00,225 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 56 [2018-10-03 09:09:00,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:00,225 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-03 09:09:00,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-03 09:09:00,226 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-03 09:09:00,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-03 09:09:00,226 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:00,226 INFO L375 BasicCegarLoop]: trace histogram [28, 27, 1, 1, 1] [2018-10-03 09:09:00,227 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:00,227 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:00,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1336819483, now seen corresponding path program 27 times [2018-10-03 09:09:00,227 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:00,227 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:00,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:00,228 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:00,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:00,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:00,730 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:00,730 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:00,730 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:00,738 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:09:00,761 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-10-03 09:09:00,761 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:00,763 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:00,949 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:00,968 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:00,969 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-03 09:09:00,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-03 09:09:00,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-03 09:09:00,969 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:00,969 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 30 states. [2018-10-03 09:09:01,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:01,035 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-03 09:09:01,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-03 09:09:01,035 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 58 [2018-10-03 09:09:01,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:01,036 INFO L225 Difference]: With dead ends: 63 [2018-10-03 09:09:01,036 INFO L226 Difference]: Without dead ends: 61 [2018-10-03 09:09:01,036 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime 28 [2018-10-03 09:09:01,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-03 09:09:01,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-03 09:09:01,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-03 09:09:01,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-10-03 09:09:01,039 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 58 [2018-10-03 09:09:01,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:01,039 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-10-03 09:09:01,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-03 09:09:01,039 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-10-03 09:09:01,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-03 09:09:01,040 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:01,040 INFO L375 BasicCegarLoop]: trace histogram [29, 28, 1, 1, 1] [2018-10-03 09:09:01,040 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:01,041 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:01,041 INFO L82 PathProgramCache]: Analyzing trace with hash -488249569, now seen corresponding path program 28 times [2018-10-03 09:09:01,041 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:01,041 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:01,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:01,042 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:01,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:01,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:01,599 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:01,600 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:01,600 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:01,607 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:09:01,624 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:09:01,625 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:01,627 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:01,720 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:01,740 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:01,740 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-03 09:09:01,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-03 09:09:01,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-03 09:09:01,740 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:01,741 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 31 states. [2018-10-03 09:09:01,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:01,850 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-03 09:09:01,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-03 09:09:01,851 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 60 [2018-10-03 09:09:01,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:01,851 INFO L225 Difference]: With dead ends: 65 [2018-10-03 09:09:01,852 INFO L226 Difference]: Without dead ends: 63 [2018-10-03 09:09:01,852 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime 29 [2018-10-03 09:09:01,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-03 09:09:01,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-03 09:09:01,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-03 09:09:01,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-03 09:09:01,856 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 60 [2018-10-03 09:09:01,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:01,856 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-03 09:09:01,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-03 09:09:01,857 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-03 09:09:01,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-03 09:09:01,857 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:01,857 INFO L375 BasicCegarLoop]: trace histogram [30, 29, 1, 1, 1] [2018-10-03 09:09:01,858 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:01,858 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:01,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1056348455, now seen corresponding path program 29 times [2018-10-03 09:09:01,858 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:01,858 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:01,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:01,859 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:01,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:02,224 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:02,224 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:02,225 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 [2018-10-03 09:09:02,239 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:09:02,270 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-10-03 09:09:02,271 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:02,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:02,387 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:02,406 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:02,406 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-03 09:09:02,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-03 09:09:02,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-03 09:09:02,407 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:02,407 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 32 states. [2018-10-03 09:09:02,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:02,450 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-10-03 09:09:02,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-03 09:09:02,451 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 62 [2018-10-03 09:09:02,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:02,451 INFO L225 Difference]: With dead ends: 67 [2018-10-03 09:09:02,452 INFO L226 Difference]: Without dead ends: 65 [2018-10-03 09:09:02,452 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 30 [2018-10-03 09:09:02,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-03 09:09:02,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-03 09:09:02,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-03 09:09:02,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-10-03 09:09:02,456 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 62 [2018-10-03 09:09:02,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:02,456 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-10-03 09:09:02,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-03 09:09:02,456 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-10-03 09:09:02,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-03 09:09:02,457 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:02,457 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 1, 1, 1] [2018-10-03 09:09:02,457 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:02,457 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:02,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1538531309, now seen corresponding path program 30 times [2018-10-03 09:09:02,457 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:02,457 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:02,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:02,458 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:02,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:02,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:03,106 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:03,106 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:03,106 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 [2018-10-03 09:09:03,116 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:09:03,149 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-03 09:09:03,149 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:03,151 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:03,313 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:03,333 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:03,334 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-10-03 09:09:03,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-03 09:09:03,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-03 09:09:03,335 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:03,335 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 33 states. [2018-10-03 09:09:03,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:03,415 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-03 09:09:03,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-03 09:09:03,428 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 64 [2018-10-03 09:09:03,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:03,429 INFO L225 Difference]: With dead ends: 69 [2018-10-03 09:09:03,429 INFO L226 Difference]: Without dead ends: 67 [2018-10-03 09:09:03,429 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime 31 [2018-10-03 09:09:03,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-03 09:09:03,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-03 09:09:03,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-03 09:09:03,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-03 09:09:03,432 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 64 [2018-10-03 09:09:03,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:03,432 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-03 09:09:03,432 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-03 09:09:03,432 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-03 09:09:03,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-03 09:09:03,433 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:03,433 INFO L375 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1] [2018-10-03 09:09:03,433 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:03,433 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:03,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1059786035, now seen corresponding path program 31 times [2018-10-03 09:09:03,434 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:03,434 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:03,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:03,435 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:03,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:03,832 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:03,833 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:03,833 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:03,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:03,855 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:04,092 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:04,112 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:04,112 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-03 09:09:04,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-03 09:09:04,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-03 09:09:04,113 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:04,113 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 34 states. [2018-10-03 09:09:04,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:04,158 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-03 09:09:04,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-03 09:09:04,159 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 66 [2018-10-03 09:09:04,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:04,160 INFO L225 Difference]: With dead ends: 71 [2018-10-03 09:09:04,160 INFO L226 Difference]: Without dead ends: 69 [2018-10-03 09:09:04,160 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime 32 [2018-10-03 09:09:04,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-03 09:09:04,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-03 09:09:04,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-03 09:09:04,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-10-03 09:09:04,163 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 66 [2018-10-03 09:09:04,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:04,163 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-10-03 09:09:04,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-03 09:09:04,163 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-10-03 09:09:04,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-03 09:09:04,164 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:04,164 INFO L375 BasicCegarLoop]: trace histogram [33, 32, 1, 1, 1] [2018-10-03 09:09:04,164 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:04,164 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:04,164 INFO L82 PathProgramCache]: Analyzing trace with hash -547078393, now seen corresponding path program 32 times [2018-10-03 09:09:04,164 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:04,164 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:04,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:04,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:04,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:04,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:04,807 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:04,807 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:04,814 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:09:04,842 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:09:04,843 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:04,845 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:04,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:05,010 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:05,010 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-03 09:09:05,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-03 09:09:05,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-03 09:09:05,011 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:05,011 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 35 states. [2018-10-03 09:09:05,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:05,069 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-03 09:09:05,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-03 09:09:05,070 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 68 [2018-10-03 09:09:05,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:05,070 INFO L225 Difference]: With dead ends: 73 [2018-10-03 09:09:05,071 INFO L226 Difference]: Without dead ends: 71 [2018-10-03 09:09:05,071 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime 33 [2018-10-03 09:09:05,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-03 09:09:05,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-03 09:09:05,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-03 09:09:05,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-03 09:09:05,074 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 68 [2018-10-03 09:09:05,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:05,074 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-03 09:09:05,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-03 09:09:05,074 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-03 09:09:05,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-03 09:09:05,075 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:05,075 INFO L375 BasicCegarLoop]: trace histogram [34, 33, 1, 1, 1] [2018-10-03 09:09:05,075 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:05,075 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:05,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1756273471, now seen corresponding path program 33 times [2018-10-03 09:09:05,075 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:05,075 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:05,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:05,076 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:05,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:05,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:06,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:06,125 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:06,125 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 [2018-10-03 09:09:06,132 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:09:06,205 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-10-03 09:09:06,205 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:06,207 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:06,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:06,413 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:06,414 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-03 09:09:06,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-03 09:09:06,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-03 09:09:06,414 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:06,414 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 36 states. [2018-10-03 09:09:06,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:06,464 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-03 09:09:06,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-03 09:09:06,464 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 70 [2018-10-03 09:09:06,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:06,465 INFO L225 Difference]: With dead ends: 75 [2018-10-03 09:09:06,465 INFO L226 Difference]: Without dead ends: 73 [2018-10-03 09:09:06,466 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.7s impTime 34 [2018-10-03 09:09:06,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-03 09:09:06,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-03 09:09:06,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-03 09:09:06,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-10-03 09:09:06,469 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 70 [2018-10-03 09:09:06,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:06,469 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-10-03 09:09:06,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-03 09:09:06,469 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-10-03 09:09:06,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-03 09:09:06,470 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:06,470 INFO L375 BasicCegarLoop]: trace histogram [35, 34, 1, 1, 1] [2018-10-03 09:09:06,470 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:06,470 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:06,470 INFO L82 PathProgramCache]: Analyzing trace with hash 143393787, now seen corresponding path program 34 times [2018-10-03 09:09:06,470 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:06,471 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:06,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:06,471 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:06,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:06,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:07,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:07,114 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:07,114 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:07,122 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:09:07,143 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:09:07,143 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:07,144 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:07,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:07,278 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:07,279 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-03 09:09:07,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-03 09:09:07,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-03 09:09:07,279 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:07,279 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 37 states. [2018-10-03 09:09:07,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:07,443 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-03 09:09:07,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-03 09:09:07,443 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 72 [2018-10-03 09:09:07,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:07,444 INFO L225 Difference]: With dead ends: 77 [2018-10-03 09:09:07,444 INFO L226 Difference]: Without dead ends: 75 [2018-10-03 09:09:07,445 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime 35 [2018-10-03 09:09:07,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-03 09:09:07,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-03 09:09:07,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-03 09:09:07,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-03 09:09:07,448 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 72 [2018-10-03 09:09:07,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:07,449 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-03 09:09:07,449 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-03 09:09:07,449 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-03 09:09:07,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-03 09:09:07,450 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:07,450 INFO L375 BasicCegarLoop]: trace histogram [36, 35, 1, 1, 1] [2018-10-03 09:09:07,450 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:07,450 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:07,450 INFO L82 PathProgramCache]: Analyzing trace with hash 362527925, now seen corresponding path program 35 times [2018-10-03 09:09:07,450 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:07,451 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:07,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:07,451 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:07,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:07,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:07,946 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:07,946 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 [2018-10-03 09:09:07,953 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:09:07,989 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-10-03 09:09:07,989 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:07,991 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:08,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:08,644 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:08,644 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-03 09:09:08,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-03 09:09:08,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-03 09:09:08,645 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:08,645 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 38 states. [2018-10-03 09:09:08,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:08,757 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-10-03 09:09:08,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-03 09:09:08,757 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 74 [2018-10-03 09:09:08,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:08,758 INFO L225 Difference]: With dead ends: 79 [2018-10-03 09:09:08,758 INFO L226 Difference]: Without dead ends: 77 [2018-10-03 09:09:08,758 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.3s impTime 36 [2018-10-03 09:09:08,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-03 09:09:08,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-03 09:09:08,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-03 09:09:08,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-10-03 09:09:08,760 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 74 [2018-10-03 09:09:08,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:08,760 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-10-03 09:09:08,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-03 09:09:08,761 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-10-03 09:09:08,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-03 09:09:08,761 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:08,761 INFO L375 BasicCegarLoop]: trace histogram [37, 36, 1, 1, 1] [2018-10-03 09:09:08,762 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:08,762 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:08,762 INFO L82 PathProgramCache]: Analyzing trace with hash 497037039, now seen corresponding path program 36 times [2018-10-03 09:09:08,762 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:08,762 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:08,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:08,763 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:08,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:09,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:09,423 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:09,423 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:09,432 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:09:09,466 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-03 09:09:09,466 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:09,469 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:09,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:09,679 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:09,679 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-10-03 09:09:09,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-03 09:09:09,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-03 09:09:09,680 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:09,680 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 39 states. [2018-10-03 09:09:09,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:09,761 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-10-03 09:09:09,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-03 09:09:09,762 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 76 [2018-10-03 09:09:09,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:09,763 INFO L225 Difference]: With dead ends: 81 [2018-10-03 09:09:09,764 INFO L226 Difference]: Without dead ends: 79 [2018-10-03 09:09:09,764 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime 37 [2018-10-03 09:09:09,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-03 09:09:09,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-03 09:09:09,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-03 09:09:09,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-10-03 09:09:09,768 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 76 [2018-10-03 09:09:09,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:09,768 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-10-03 09:09:09,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-03 09:09:09,769 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-10-03 09:09:09,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-03 09:09:09,769 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:09,769 INFO L375 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1] [2018-10-03 09:09:09,770 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:09,770 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:09,770 INFO L82 PathProgramCache]: Analyzing trace with hash 911276713, now seen corresponding path program 37 times [2018-10-03 09:09:09,770 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:09,770 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:09,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:09,771 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:09,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:09,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:10,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:10,492 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:10,492 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 [2018-10-03 09:09:10,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:10,531 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:10,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:10,693 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:10,693 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-03 09:09:10,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-03 09:09:10,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-03 09:09:10,693 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:10,694 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 40 states. [2018-10-03 09:09:10,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:10,775 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-10-03 09:09:10,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-03 09:09:10,775 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 78 [2018-10-03 09:09:10,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:10,776 INFO L225 Difference]: With dead ends: 83 [2018-10-03 09:09:10,776 INFO L226 Difference]: Without dead ends: 81 [2018-10-03 09:09:10,777 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime 38 [2018-10-03 09:09:10,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-03 09:09:10,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-03 09:09:10,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-03 09:09:10,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-10-03 09:09:10,780 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 78 [2018-10-03 09:09:10,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:10,781 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-10-03 09:09:10,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-03 09:09:10,781 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-10-03 09:09:10,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-03 09:09:10,781 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:10,781 INFO L375 BasicCegarLoop]: trace histogram [39, 38, 1, 1, 1] [2018-10-03 09:09:10,782 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:10,782 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:10,782 INFO L82 PathProgramCache]: Analyzing trace with hash -436355101, now seen corresponding path program 38 times [2018-10-03 09:09:10,782 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:10,782 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:10,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:10,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:10,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:11,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:11,718 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:11,719 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:11,727 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:09:11,748 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:09:11,749 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:11,752 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:11,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:11,919 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:11,919 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-03 09:09:11,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-03 09:09:11,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-03 09:09:11,920 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:11,920 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 41 states. [2018-10-03 09:09:12,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:12,046 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-10-03 09:09:12,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-03 09:09:12,046 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 80 [2018-10-03 09:09:12,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:12,047 INFO L225 Difference]: With dead ends: 85 [2018-10-03 09:09:12,047 INFO L226 Difference]: Without dead ends: 83 [2018-10-03 09:09:12,048 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.8s impTime 39 [2018-10-03 09:09:12,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-03 09:09:12,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-03 09:09:12,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-03 09:09:12,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-03 09:09:12,051 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 80 [2018-10-03 09:09:12,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:12,051 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-03 09:09:12,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-03 09:09:12,051 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-03 09:09:12,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-03 09:09:12,052 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:12,052 INFO L375 BasicCegarLoop]: trace histogram [40, 39, 1, 1, 1] [2018-10-03 09:09:12,052 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:12,052 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:12,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1569595037, now seen corresponding path program 39 times [2018-10-03 09:09:12,052 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:12,053 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:12,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:12,053 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:12,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:12,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:12,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:12,739 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:12,739 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:12,747 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:09:12,792 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-10-03 09:09:12,792 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:12,794 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:12,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:12,940 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:12,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-03 09:09:12,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-03 09:09:12,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-03 09:09:12,941 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:12,941 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 42 states. [2018-10-03 09:09:13,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:13,040 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-10-03 09:09:13,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-03 09:09:13,040 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 82 [2018-10-03 09:09:13,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:13,041 INFO L225 Difference]: With dead ends: 87 [2018-10-03 09:09:13,041 INFO L226 Difference]: Without dead ends: 85 [2018-10-03 09:09:13,041 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime 40 [2018-10-03 09:09:13,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-03 09:09:13,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-03 09:09:13,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-03 09:09:13,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-10-03 09:09:13,043 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 82 [2018-10-03 09:09:13,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:13,044 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-10-03 09:09:13,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-03 09:09:13,044 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-10-03 09:09:13,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-03 09:09:13,044 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:13,044 INFO L375 BasicCegarLoop]: trace histogram [41, 40, 1, 1, 1] [2018-10-03 09:09:13,045 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:13,045 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:13,045 INFO L82 PathProgramCache]: Analyzing trace with hash 847361751, now seen corresponding path program 40 times [2018-10-03 09:09:13,045 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:13,045 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:13,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:13,046 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:13,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:14,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:14,528 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:14,529 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 [2018-10-03 09:09:14,536 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:09:14,556 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:09:14,557 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:14,559 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:14,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:14,719 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:14,719 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-03 09:09:14,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-03 09:09:14,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-03 09:09:14,720 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:14,720 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 43 states. [2018-10-03 09:09:14,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:14,868 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-03 09:09:14,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-03 09:09:14,868 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 84 [2018-10-03 09:09:14,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:14,869 INFO L225 Difference]: With dead ends: 89 [2018-10-03 09:09:14,869 INFO L226 Difference]: Without dead ends: 87 [2018-10-03 09:09:14,870 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.3s impTime 41 [2018-10-03 09:09:14,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-03 09:09:14,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-03 09:09:14,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-03 09:09:14,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-10-03 09:09:14,873 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 84 [2018-10-03 09:09:14,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:14,873 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-10-03 09:09:14,874 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-03 09:09:14,874 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-10-03 09:09:14,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-03 09:09:14,875 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:14,875 INFO L375 BasicCegarLoop]: trace histogram [42, 41, 1, 1, 1] [2018-10-03 09:09:14,875 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:14,875 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:14,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1729091439, now seen corresponding path program 41 times [2018-10-03 09:09:14,876 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:14,876 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:14,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:14,876 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:14,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:15,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:15,812 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:15,812 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 [2018-10-03 09:09:15,832 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:09:15,869 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-10-03 09:09:15,869 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:15,871 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:16,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:16,126 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:16,126 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-03 09:09:16,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-03 09:09:16,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-03 09:09:16,127 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:16,127 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 44 states. [2018-10-03 09:09:16,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:16,240 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-03 09:09:16,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-03 09:09:16,241 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 86 [2018-10-03 09:09:16,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:16,241 INFO L225 Difference]: With dead ends: 91 [2018-10-03 09:09:16,241 INFO L226 Difference]: Without dead ends: 89 [2018-10-03 09:09:16,242 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.7s impTime 42 [2018-10-03 09:09:16,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-03 09:09:16,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-10-03 09:09:16,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-03 09:09:16,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-10-03 09:09:16,245 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 86 [2018-10-03 09:09:16,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:16,246 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-10-03 09:09:16,246 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-03 09:09:16,246 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-10-03 09:09:16,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-03 09:09:16,246 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:16,246 INFO L375 BasicCegarLoop]: trace histogram [43, 42, 1, 1, 1] [2018-10-03 09:09:16,246 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:16,246 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:16,247 INFO L82 PathProgramCache]: Analyzing trace with hash 495522763, now seen corresponding path program 42 times [2018-10-03 09:09:16,247 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:16,247 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:16,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:16,247 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:16,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:16,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:17,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:17,106 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:17,107 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:17,114 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:09:17,150 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-03 09:09:17,151 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:17,153 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:17,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:17,350 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:17,351 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-10-03 09:09:17,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-03 09:09:17,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-03 09:09:17,351 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:17,352 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 45 states. [2018-10-03 09:09:17,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:17,408 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-10-03 09:09:17,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-03 09:09:17,409 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 88 [2018-10-03 09:09:17,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:17,410 INFO L225 Difference]: With dead ends: 93 [2018-10-03 09:09:17,410 INFO L226 Difference]: Without dead ends: 91 [2018-10-03 09:09:17,410 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime 43 [2018-10-03 09:09:17,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-03 09:09:17,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-03 09:09:17,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-03 09:09:17,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-10-03 09:09:17,413 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 88 [2018-10-03 09:09:17,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:17,413 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-10-03 09:09:17,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-03 09:09:17,413 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-10-03 09:09:17,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-03 09:09:17,413 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:17,413 INFO L375 BasicCegarLoop]: trace histogram [44, 43, 1, 1, 1] [2018-10-03 09:09:17,414 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:17,414 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:17,414 INFO L82 PathProgramCache]: Analyzing trace with hash -543942523, now seen corresponding path program 43 times [2018-10-03 09:09:17,414 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:17,414 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:17,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:17,415 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:17,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:19,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:19,120 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:19,120 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:19,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:19,152 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:19,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:19,319 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:19,320 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-03 09:09:19,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-03 09:09:19,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-03 09:09:19,320 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:19,320 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 46 states. [2018-10-03 09:09:19,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:19,429 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-10-03 09:09:19,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-03 09:09:19,430 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 90 [2018-10-03 09:09:19,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:19,431 INFO L225 Difference]: With dead ends: 95 [2018-10-03 09:09:19,431 INFO L226 Difference]: Without dead ends: 93 [2018-10-03 09:09:19,431 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.3s impTime 44 [2018-10-03 09:09:19,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-03 09:09:19,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-03 09:09:19,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-03 09:09:19,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-10-03 09:09:19,433 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 90 [2018-10-03 09:09:19,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:19,433 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-10-03 09:09:19,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-03 09:09:19,434 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-10-03 09:09:19,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-03 09:09:19,434 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:19,434 INFO L375 BasicCegarLoop]: trace histogram [45, 44, 1, 1, 1] [2018-10-03 09:09:19,434 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:19,434 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:19,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1257297599, now seen corresponding path program 44 times [2018-10-03 09:09:19,435 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:19,435 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:19,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:19,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:19,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:19,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:19,997 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:19,998 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:20,005 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:09:20,028 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:09:20,028 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:20,030 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:20,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:20,388 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:20,389 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-03 09:09:20,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-03 09:09:20,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-03 09:09:20,389 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:20,389 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 47 states. [2018-10-03 09:09:20,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:20,627 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-10-03 09:09:20,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-03 09:09:20,628 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 92 [2018-10-03 09:09:20,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:20,629 INFO L225 Difference]: With dead ends: 97 [2018-10-03 09:09:20,629 INFO L226 Difference]: Without dead ends: 95 [2018-10-03 09:09:20,629 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.4s impTime 45 [2018-10-03 09:09:20,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-03 09:09:20,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-03 09:09:20,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-03 09:09:20,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-10-03 09:09:20,633 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 92 [2018-10-03 09:09:20,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:20,634 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-10-03 09:09:20,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-03 09:09:20,634 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-10-03 09:09:20,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-03 09:09:20,634 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:20,634 INFO L375 BasicCegarLoop]: trace histogram [46, 45, 1, 1, 1] [2018-10-03 09:09:20,635 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:20,635 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:20,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1377234553, now seen corresponding path program 45 times [2018-10-03 09:09:20,635 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:20,635 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:20,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:20,636 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:20,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:20,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:21,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:21,261 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:21,261 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 [2018-10-03 09:09:21,269 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:09:21,356 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-10-03 09:09:21,357 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:21,359 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:21,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:21,725 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:21,725 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-03 09:09:21,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-03 09:09:21,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-03 09:09:21,726 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:21,726 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 48 states. [2018-10-03 09:09:21,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:21,797 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-10-03 09:09:21,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-03 09:09:21,798 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 94 [2018-10-03 09:09:21,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:21,799 INFO L225 Difference]: With dead ends: 99 [2018-10-03 09:09:21,799 INFO L226 Difference]: Without dead ends: 97 [2018-10-03 09:09:21,799 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.4s impTime 46 [2018-10-03 09:09:21,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-10-03 09:09:21,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-10-03 09:09:21,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-03 09:09:21,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-10-03 09:09:21,802 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 94 [2018-10-03 09:09:21,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:21,802 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-10-03 09:09:21,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-03 09:09:21,802 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-10-03 09:09:21,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-03 09:09:21,803 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:21,803 INFO L375 BasicCegarLoop]: trace histogram [47, 46, 1, 1, 1] [2018-10-03 09:09:21,803 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:21,803 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:21,803 INFO L82 PathProgramCache]: Analyzing trace with hash 672530355, now seen corresponding path program 46 times [2018-10-03 09:09:21,803 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:21,803 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:21,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:21,804 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:21,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:21,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:23,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:23,015 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:23,015 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 [2018-10-03 09:09:23,023 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:09:23,048 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:09:23,048 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:23,050 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:23,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:23,254 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:23,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-10-03 09:09:23,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-03 09:09:23,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-03 09:09:23,254 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:23,255 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 49 states. [2018-10-03 09:09:23,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:23,355 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-03 09:09:23,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-03 09:09:23,355 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 96 [2018-10-03 09:09:23,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:23,356 INFO L225 Difference]: With dead ends: 101 [2018-10-03 09:09:23,356 INFO L226 Difference]: Without dead ends: 99 [2018-10-03 09:09:23,356 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.0s impTime 47 [2018-10-03 09:09:23,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-03 09:09:23,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-03 09:09:23,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-03 09:09:23,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-10-03 09:09:23,360 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 96 [2018-10-03 09:09:23,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:23,360 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-10-03 09:09:23,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-03 09:09:23,360 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-10-03 09:09:23,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-03 09:09:23,361 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:23,361 INFO L375 BasicCegarLoop]: trace histogram [48, 47, 1, 1, 1] [2018-10-03 09:09:23,361 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:23,362 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:23,362 INFO L82 PathProgramCache]: Analyzing trace with hash 2056628845, now seen corresponding path program 47 times [2018-10-03 09:09:23,362 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:23,362 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:23,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:23,363 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:23,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:24,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:24,417 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:24,417 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:24,425 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:09:24,466 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-10-03 09:09:24,466 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:24,469 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:24,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:24,648 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:24,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-03 09:09:24,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-03 09:09:24,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-03 09:09:24,649 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:24,649 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 50 states. [2018-10-03 09:09:24,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:24,727 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-10-03 09:09:24,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-03 09:09:24,727 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 98 [2018-10-03 09:09:24,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:24,728 INFO L225 Difference]: With dead ends: 103 [2018-10-03 09:09:24,728 INFO L226 Difference]: Without dead ends: 101 [2018-10-03 09:09:24,728 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.7s impTime 48 [2018-10-03 09:09:24,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-03 09:09:24,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-03 09:09:24,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-03 09:09:24,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-10-03 09:09:24,732 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 98 [2018-10-03 09:09:24,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:24,732 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-10-03 09:09:24,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-03 09:09:24,732 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-10-03 09:09:24,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-03 09:09:24,732 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:24,733 INFO L375 BasicCegarLoop]: trace histogram [49, 48, 1, 1, 1] [2018-10-03 09:09:24,733 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:24,733 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:24,733 INFO L82 PathProgramCache]: Analyzing trace with hash 735415975, now seen corresponding path program 48 times [2018-10-03 09:09:24,733 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:24,733 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:24,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:24,734 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:24,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:25,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:25,652 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:25,652 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:25,660 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:09:25,702 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-03 09:09:25,703 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:25,705 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:25,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:25,887 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:25,888 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-10-03 09:09:25,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-03 09:09:25,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-03 09:09:25,888 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:25,888 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 51 states. [2018-10-03 09:09:26,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:26,005 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-03 09:09:26,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-03 09:09:26,005 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 100 [2018-10-03 09:09:26,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:26,006 INFO L225 Difference]: With dead ends: 105 [2018-10-03 09:09:26,006 INFO L226 Difference]: Without dead ends: 103 [2018-10-03 09:09:26,006 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime 49 [2018-10-03 09:09:26,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-03 09:09:26,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-03 09:09:26,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-03 09:09:26,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-10-03 09:09:26,009 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 100 [2018-10-03 09:09:26,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:26,010 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-10-03 09:09:26,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-03 09:09:26,010 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-10-03 09:09:26,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-03 09:09:26,010 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:26,011 INFO L375 BasicCegarLoop]: trace histogram [50, 49, 1, 1, 1] [2018-10-03 09:09:26,011 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:26,011 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:26,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1934799775, now seen corresponding path program 49 times [2018-10-03 09:09:26,011 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:26,011 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:26,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:26,012 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:26,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:26,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:26,990 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:26,991 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:26,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:27,025 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:27,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:27,195 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:27,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-03 09:09:27,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-03 09:09:27,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-03 09:09:27,196 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:27,196 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 52 states. [2018-10-03 09:09:27,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:27,287 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-10-03 09:09:27,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-03 09:09:27,287 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 102 [2018-10-03 09:09:27,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:27,288 INFO L225 Difference]: With dead ends: 107 [2018-10-03 09:09:27,288 INFO L226 Difference]: Without dead ends: 105 [2018-10-03 09:09:27,289 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.8s impTime 50 [2018-10-03 09:09:27,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-03 09:09:27,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-10-03 09:09:27,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-03 09:09:27,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-10-03 09:09:27,293 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 102 [2018-10-03 09:09:27,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:27,293 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-10-03 09:09:27,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-03 09:09:27,293 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-10-03 09:09:27,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-03 09:09:27,294 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:27,294 INFO L375 BasicCegarLoop]: trace histogram [51, 50, 1, 1, 1] [2018-10-03 09:09:27,294 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:27,295 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:27,295 INFO L82 PathProgramCache]: Analyzing trace with hash 378307483, now seen corresponding path program 50 times [2018-10-03 09:09:27,295 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:27,295 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:27,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:27,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:27,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:29,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:29,035 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:29,035 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:29,044 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:09:29,072 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:09:29,072 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:29,075 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:29,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:29,436 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:29,436 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-03 09:09:29,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-03 09:09:29,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-03 09:09:29,437 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:29,438 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 53 states. [2018-10-03 09:09:29,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:29,666 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-03 09:09:29,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-03 09:09:29,667 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 104 [2018-10-03 09:09:29,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:29,668 INFO L225 Difference]: With dead ends: 109 [2018-10-03 09:09:29,668 INFO L226 Difference]: Without dead ends: 107 [2018-10-03 09:09:29,668 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.4s impTime 51 [2018-10-03 09:09:29,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-03 09:09:29,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-03 09:09:29,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-03 09:09:29,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-03 09:09:29,672 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 104 [2018-10-03 09:09:29,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:29,672 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-03 09:09:29,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-03 09:09:29,672 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-03 09:09:29,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-03 09:09:29,673 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:29,673 INFO L375 BasicCegarLoop]: trace histogram [52, 51, 1, 1, 1] [2018-10-03 09:09:29,673 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:29,673 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:29,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1518676907, now seen corresponding path program 51 times [2018-10-03 09:09:29,673 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:29,674 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:29,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:29,674 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:29,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:29,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:31,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:31,011 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:31,011 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 [2018-10-03 09:09:31,019 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:09:31,070 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-10-03 09:09:31,070 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:31,072 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:31,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:31,477 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:31,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-03 09:09:31,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-03 09:09:31,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-03 09:09:31,479 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:31,479 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 54 states. [2018-10-03 09:09:31,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:31,625 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-10-03 09:09:31,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-03 09:09:31,625 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 106 [2018-10-03 09:09:31,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:31,626 INFO L225 Difference]: With dead ends: 111 [2018-10-03 09:09:31,626 INFO L226 Difference]: Without dead ends: 109 [2018-10-03 09:09:31,626 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.0s impTime 52 [2018-10-03 09:09:31,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-03 09:09:31,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-10-03 09:09:31,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-03 09:09:31,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-10-03 09:09:31,630 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 106 [2018-10-03 09:09:31,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:31,630 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-10-03 09:09:31,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-03 09:09:31,630 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-10-03 09:09:31,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-03 09:09:31,631 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:31,631 INFO L375 BasicCegarLoop]: trace histogram [53, 52, 1, 1, 1] [2018-10-03 09:09:31,631 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:31,631 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:31,631 INFO L82 PathProgramCache]: Analyzing trace with hash 840425103, now seen corresponding path program 52 times [2018-10-03 09:09:31,631 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:31,631 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:31,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:31,632 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:31,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:31,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:32,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:32,888 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:32,888 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 [2018-10-03 09:09:32,903 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:09:32,952 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:09:32,953 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:32,956 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:33,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:33,151 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:33,151 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-03 09:09:33,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-03 09:09:33,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-03 09:09:33,152 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:33,152 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 55 states. [2018-10-03 09:09:33,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:33,276 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-10-03 09:09:33,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-03 09:09:33,277 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 108 [2018-10-03 09:09:33,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:33,278 INFO L225 Difference]: With dead ends: 113 [2018-10-03 09:09:33,278 INFO L226 Difference]: Without dead ends: 111 [2018-10-03 09:09:33,278 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.0s impTime 53 [2018-10-03 09:09:33,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-03 09:09:33,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-03 09:09:33,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-03 09:09:33,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-10-03 09:09:33,280 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 108 [2018-10-03 09:09:33,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:33,281 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-10-03 09:09:33,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-03 09:09:33,281 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-10-03 09:09:33,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-03 09:09:33,281 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:33,281 INFO L375 BasicCegarLoop]: trace histogram [54, 53, 1, 1, 1] [2018-10-03 09:09:33,282 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:33,282 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:33,282 INFO L82 PathProgramCache]: Analyzing trace with hash 194724425, now seen corresponding path program 53 times [2018-10-03 09:09:33,282 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:33,282 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:33,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:33,283 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:33,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:33,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:34,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:34,739 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:34,739 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:34,753 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:09:34,872 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-10-03 09:09:34,872 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:34,889 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:35,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:35,140 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:35,140 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-03 09:09:35,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-03 09:09:35,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-03 09:09:35,141 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:35,141 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 56 states. [2018-10-03 09:09:35,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:35,210 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-10-03 09:09:35,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-03 09:09:35,211 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 110 [2018-10-03 09:09:35,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:35,212 INFO L225 Difference]: With dead ends: 115 [2018-10-03 09:09:35,212 INFO L226 Difference]: Without dead ends: 113 [2018-10-03 09:09:35,212 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime 54 [2018-10-03 09:09:35,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-03 09:09:35,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-10-03 09:09:35,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-03 09:09:35,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-10-03 09:09:35,215 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 110 [2018-10-03 09:09:35,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:35,216 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-10-03 09:09:35,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-03 09:09:35,216 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-10-03 09:09:35,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-03 09:09:35,216 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:35,216 INFO L375 BasicCegarLoop]: trace histogram [55, 54, 1, 1, 1] [2018-10-03 09:09:35,216 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:35,216 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:35,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1848336509, now seen corresponding path program 54 times [2018-10-03 09:09:35,217 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:35,217 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:35,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:35,217 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:35,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:36,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:36,332 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:36,333 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:36,340 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:09:36,389 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-10-03 09:09:36,389 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:36,392 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:36,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:36,818 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:36,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-10-03 09:09:36,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-03 09:09:36,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-03 09:09:36,819 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:36,819 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 57 states. [2018-10-03 09:09:37,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:37,462 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-10-03 09:09:37,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-03 09:09:37,462 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 112 [2018-10-03 09:09:37,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:37,463 INFO L225 Difference]: With dead ends: 117 [2018-10-03 09:09:37,463 INFO L226 Difference]: Without dead ends: 115 [2018-10-03 09:09:37,464 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 0.9s impTime 55 [2018-10-03 09:09:37,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-10-03 09:09:37,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-10-03 09:09:37,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-03 09:09:37,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-10-03 09:09:37,466 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 112 [2018-10-03 09:09:37,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:37,467 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-10-03 09:09:37,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-03 09:09:37,467 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-10-03 09:09:37,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-03 09:09:37,468 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:37,468 INFO L375 BasicCegarLoop]: trace histogram [56, 55, 1, 1, 1] [2018-10-03 09:09:37,468 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:37,468 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:37,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1865127485, now seen corresponding path program 55 times [2018-10-03 09:09:37,468 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:37,469 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:37,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:37,469 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:37,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:40,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:40,392 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:40,392 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:40,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:40,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:40,429 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:40,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:40,652 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:40,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-03 09:09:40,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-03 09:09:40,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-03 09:09:40,654 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:40,654 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 58 states. [2018-10-03 09:09:40,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:40,935 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-10-03 09:09:40,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-03 09:09:40,935 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 114 [2018-10-03 09:09:40,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:40,936 INFO L225 Difference]: With dead ends: 119 [2018-10-03 09:09:40,936 INFO L226 Difference]: Without dead ends: 117 [2018-10-03 09:09:40,936 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.3s impTime 56 [2018-10-03 09:09:40,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-10-03 09:09:40,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-10-03 09:09:40,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-10-03 09:09:40,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-10-03 09:09:40,940 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 114 [2018-10-03 09:09:40,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:40,940 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-10-03 09:09:40,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-03 09:09:40,940 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-10-03 09:09:40,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-03 09:09:40,941 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:40,941 INFO L375 BasicCegarLoop]: trace histogram [57, 56, 1, 1, 1] [2018-10-03 09:09:40,941 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:40,941 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:40,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1386202743, now seen corresponding path program 56 times [2018-10-03 09:09:40,942 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:40,942 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:40,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:40,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:40,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:42,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:42,480 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:42,480 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 [2018-10-03 09:09:42,488 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:09:42,517 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:09:42,518 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:42,520 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:42,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:42,747 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:42,747 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-03 09:09:42,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-03 09:09:42,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-03 09:09:42,748 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:42,748 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 59 states. [2018-10-03 09:09:42,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:42,865 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-10-03 09:09:42,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-03 09:09:42,866 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 116 [2018-10-03 09:09:42,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:42,867 INFO L225 Difference]: With dead ends: 121 [2018-10-03 09:09:42,867 INFO L226 Difference]: Without dead ends: 119 [2018-10-03 09:09:42,867 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.3s impTime 57 [2018-10-03 09:09:42,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-10-03 09:09:42,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-10-03 09:09:42,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-03 09:09:42,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-10-03 09:09:42,870 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 116 [2018-10-03 09:09:42,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:42,871 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-10-03 09:09:42,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-03 09:09:42,871 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-10-03 09:09:42,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-03 09:09:42,871 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:42,872 INFO L375 BasicCegarLoop]: trace histogram [58, 57, 1, 1, 1] [2018-10-03 09:09:42,872 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:42,872 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:42,872 INFO L82 PathProgramCache]: Analyzing trace with hash 701026353, now seen corresponding path program 57 times [2018-10-03 09:09:42,872 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:42,872 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:42,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:42,873 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:42,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:44,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:44,898 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:44,898 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 [2018-10-03 09:09:44,905 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:09:44,966 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2018-10-03 09:09:44,966 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:44,969 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:45,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:45,431 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:45,431 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-03 09:09:45,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-03 09:09:45,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-03 09:09:45,432 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:45,432 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 60 states. [2018-10-03 09:09:45,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:45,527 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-10-03 09:09:45,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-03 09:09:45,527 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 118 [2018-10-03 09:09:45,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:45,528 INFO L225 Difference]: With dead ends: 123 [2018-10-03 09:09:45,528 INFO L226 Difference]: Without dead ends: 121 [2018-10-03 09:09:45,528 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.6s impTime 58 [2018-10-03 09:09:45,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-10-03 09:09:45,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-10-03 09:09:45,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-10-03 09:09:45,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-10-03 09:09:45,531 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 118 [2018-10-03 09:09:45,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:45,531 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-10-03 09:09:45,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-03 09:09:45,531 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-10-03 09:09:45,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-03 09:09:45,532 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:45,532 INFO L375 BasicCegarLoop]: trace histogram [59, 58, 1, 1, 1] [2018-10-03 09:09:45,532 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:45,532 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:45,533 INFO L82 PathProgramCache]: Analyzing trace with hash -623488149, now seen corresponding path program 58 times [2018-10-03 09:09:45,533 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:45,533 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:45,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:45,534 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:45,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:47,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:47,139 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:47,139 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:47,147 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:09:47,177 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:09:47,178 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:47,180 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:48,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:48,495 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:48,495 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-03 09:09:48,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-03 09:09:48,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-03 09:09:48,496 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:48,496 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 61 states. [2018-10-03 09:09:48,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:48,626 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-10-03 09:09:48,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-03 09:09:48,626 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 120 [2018-10-03 09:09:48,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:48,627 INFO L225 Difference]: With dead ends: 125 [2018-10-03 09:09:48,627 INFO L226 Difference]: Without dead ends: 123 [2018-10-03 09:09:48,627 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 1.4s impTime 59 [2018-10-03 09:09:48,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-10-03 09:09:48,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-10-03 09:09:48,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-10-03 09:09:48,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-10-03 09:09:48,631 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 120 [2018-10-03 09:09:48,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:48,631 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-10-03 09:09:48,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-03 09:09:48,632 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-10-03 09:09:48,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-03 09:09:48,632 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:48,632 INFO L375 BasicCegarLoop]: trace histogram [60, 59, 1, 1, 1] [2018-10-03 09:09:48,633 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:48,633 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:48,633 INFO L82 PathProgramCache]: Analyzing trace with hash 2123362341, now seen corresponding path program 59 times [2018-10-03 09:09:48,633 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:48,633 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:48,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:48,634 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:48,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:50,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:50,711 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:50,711 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:50,718 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:09:50,774 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2018-10-03 09:09:50,774 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:50,778 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:51,155 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:51,175 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:51,175 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-03 09:09:51,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-03 09:09:51,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-03 09:09:51,176 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:51,176 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 62 states. [2018-10-03 09:09:51,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:51,315 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-10-03 09:09:51,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-03 09:09:51,315 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 122 [2018-10-03 09:09:51,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:51,316 INFO L225 Difference]: With dead ends: 127 [2018-10-03 09:09:51,316 INFO L226 Difference]: Without dead ends: 125 [2018-10-03 09:09:51,316 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.7s impTime 60 [2018-10-03 09:09:51,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-10-03 09:09:51,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-10-03 09:09:51,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-10-03 09:09:51,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-10-03 09:09:51,320 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 122 [2018-10-03 09:09:51,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:51,320 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-10-03 09:09:51,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-03 09:09:51,321 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-10-03 09:09:51,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-03 09:09:51,321 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:51,321 INFO L375 BasicCegarLoop]: trace histogram [61, 60, 1, 1, 1] [2018-10-03 09:09:51,322 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:51,322 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:51,322 INFO L82 PathProgramCache]: Analyzing trace with hash 441796191, now seen corresponding path program 60 times [2018-10-03 09:09:51,322 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:51,322 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:51,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:51,323 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:51,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:53,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:53,398 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:53,398 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 [2018-10-03 09:09:53,406 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:09:53,462 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-10-03 09:09:53,462 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:53,465 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:53,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:53,694 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:53,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-10-03 09:09:53,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-03 09:09:53,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-03 09:09:53,695 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:53,695 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 63 states. [2018-10-03 09:09:53,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:53,845 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-10-03 09:09:53,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-03 09:09:53,846 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 124 [2018-10-03 09:09:53,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:53,846 INFO L225 Difference]: With dead ends: 129 [2018-10-03 09:09:53,847 INFO L226 Difference]: Without dead ends: 127 [2018-10-03 09:09:53,847 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.8s impTime 61 [2018-10-03 09:09:53,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-10-03 09:09:53,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-10-03 09:09:53,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-10-03 09:09:53,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-10-03 09:09:53,850 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 124 [2018-10-03 09:09:53,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:53,851 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-10-03 09:09:53,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-03 09:09:53,851 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-10-03 09:09:53,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-03 09:09:53,851 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:53,852 INFO L375 BasicCegarLoop]: trace histogram [62, 61, 1, 1, 1] [2018-10-03 09:09:53,852 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:53,852 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:53,852 INFO L82 PathProgramCache]: Analyzing trace with hash -635570663, now seen corresponding path program 61 times [2018-10-03 09:09:53,852 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:53,852 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:53,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:53,853 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:53,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:53,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:54,947 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:54,947 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:54,947 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:54,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:54,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:54,990 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:55,216 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:55,236 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:55,237 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-03 09:09:55,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-03 09:09:55,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-03 09:09:55,237 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:55,237 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 64 states. [2018-10-03 09:09:55,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:55,372 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-10-03 09:09:55,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-03 09:09:55,373 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 126 [2018-10-03 09:09:55,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:55,374 INFO L225 Difference]: With dead ends: 131 [2018-10-03 09:09:55,374 INFO L226 Difference]: Without dead ends: 129 [2018-10-03 09:09:55,374 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime 62 [2018-10-03 09:09:55,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-10-03 09:09:55,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-10-03 09:09:55,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-10-03 09:09:55,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-10-03 09:09:55,376 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 126 [2018-10-03 09:09:55,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:55,376 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-10-03 09:09:55,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-03 09:09:55,376 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-10-03 09:09:55,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-03 09:09:55,377 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:55,377 INFO L375 BasicCegarLoop]: trace histogram [63, 62, 1, 1, 1] [2018-10-03 09:09:55,377 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:55,377 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:55,378 INFO L82 PathProgramCache]: Analyzing trace with hash -897999021, now seen corresponding path program 62 times [2018-10-03 09:09:55,378 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:55,378 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:55,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:55,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:55,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:56,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:56,428 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:56,428 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:56,435 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:09:56,467 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:09:56,468 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:56,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:56,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:56,691 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:56,691 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-03 09:09:56,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-03 09:09:56,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-03 09:09:56,692 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:56,692 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 65 states. [2018-10-03 09:09:56,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:56,815 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-10-03 09:09:56,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-03 09:09:56,815 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 128 [2018-10-03 09:09:56,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:56,816 INFO L225 Difference]: With dead ends: 133 [2018-10-03 09:09:56,816 INFO L226 Difference]: Without dead ends: 131 [2018-10-03 09:09:56,816 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 63 [2018-10-03 09:09:56,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-03 09:09:56,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-10-03 09:09:56,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-10-03 09:09:56,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-10-03 09:09:56,820 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 128 [2018-10-03 09:09:56,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:56,820 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-10-03 09:09:56,820 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-03 09:09:56,820 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-10-03 09:09:56,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-03 09:09:56,820 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:56,821 INFO L375 BasicCegarLoop]: trace histogram [64, 63, 1, 1, 1] [2018-10-03 09:09:56,821 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:56,821 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:56,821 INFO L82 PathProgramCache]: Analyzing trace with hash 311419405, now seen corresponding path program 63 times [2018-10-03 09:09:56,821 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:56,821 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:56,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:56,822 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:56,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:56,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:58,257 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:58,257 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:58,257 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:58,268 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:09:58,339 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2018-10-03 09:09:58,339 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:58,342 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:58,617 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:58,637 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:58,638 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-03 09:09:58,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-03 09:09:58,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-03 09:09:58,639 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:58,639 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 66 states. [2018-10-03 09:09:58,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:58,763 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-10-03 09:09:58,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-03 09:09:58,764 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 130 [2018-10-03 09:09:58,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:58,764 INFO L225 Difference]: With dead ends: 135 [2018-10-03 09:09:58,764 INFO L226 Difference]: Without dead ends: 133 [2018-10-03 09:09:58,765 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime 64 [2018-10-03 09:09:58,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-10-03 09:09:58,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-10-03 09:09:58,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-03 09:09:58,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-10-03 09:09:58,768 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 130 [2018-10-03 09:09:58,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:58,768 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-10-03 09:09:58,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-03 09:09:58,769 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-10-03 09:09:58,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-03 09:09:58,769 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:58,769 INFO L375 BasicCegarLoop]: trace histogram [65, 64, 1, 1, 1] [2018-10-03 09:09:58,770 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:58,770 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:58,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1373610425, now seen corresponding path program 64 times [2018-10-03 09:09:58,770 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:58,770 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:58,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:58,771 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:58,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:58,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:00,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:00,724 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:00,724 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:10:00,732 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:10:00,766 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:10:00,766 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:00,769 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:01,104 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:01,136 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:01,136 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-03 09:10:01,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-03 09:10:01,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-03 09:10:01,137 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:01,137 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 67 states. [2018-10-03 09:10:02,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:02,019 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-10-03 09:10:02,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-03 09:10:02,020 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 132 [2018-10-03 09:10:02,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:02,020 INFO L225 Difference]: With dead ends: 137 [2018-10-03 09:10:02,020 INFO L226 Difference]: Without dead ends: 135 [2018-10-03 09:10:02,021 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.7s impTime 65 [2018-10-03 09:10:02,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-10-03 09:10:02,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-10-03 09:10:02,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-03 09:10:02,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-10-03 09:10:02,024 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 132 [2018-10-03 09:10:02,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:02,024 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-10-03 09:10:02,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-03 09:10:02,025 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-10-03 09:10:02,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-03 09:10:02,025 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:02,025 INFO L375 BasicCegarLoop]: trace histogram [66, 65, 1, 1, 1] [2018-10-03 09:10:02,026 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:02,026 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:02,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1484606463, now seen corresponding path program 65 times [2018-10-03 09:10:02,026 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:02,026 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:02,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:02,027 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:02,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:03,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:03,917 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:03,917 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 [2018-10-03 09:10:03,924 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:10:03,991 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2018-10-03 09:10:03,992 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:03,995 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:04,252 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:04,272 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:04,273 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-03 09:10:04,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-03 09:10:04,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-03 09:10:04,274 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:04,274 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 68 states. [2018-10-03 09:10:04,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:04,433 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-10-03 09:10:04,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-03 09:10:04,434 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 134 [2018-10-03 09:10:04,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:04,434 INFO L225 Difference]: With dead ends: 139 [2018-10-03 09:10:04,435 INFO L226 Difference]: Without dead ends: 137 [2018-10-03 09:10:04,435 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.6s impTime 66 [2018-10-03 09:10:04,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-10-03 09:10:04,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-10-03 09:10:04,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-10-03 09:10:04,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-10-03 09:10:04,437 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 134 [2018-10-03 09:10:04,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:04,437 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-10-03 09:10:04,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-03 09:10:04,438 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-10-03 09:10:04,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-03 09:10:04,438 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:04,438 INFO L375 BasicCegarLoop]: trace histogram [67, 66, 1, 1, 1] [2018-10-03 09:10:04,438 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:04,438 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:04,439 INFO L82 PathProgramCache]: Analyzing trace with hash -777616581, now seen corresponding path program 66 times [2018-10-03 09:10:04,439 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:04,439 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:04,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:04,439 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:04,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:05,728 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:05,728 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:05,728 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 [2018-10-03 09:10:05,736 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:10:05,799 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-10-03 09:10:05,799 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:05,802 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:06,099 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:06,121 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:06,121 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-10-03 09:10:06,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-03 09:10:06,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-03 09:10:06,122 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:06,122 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 69 states. [2018-10-03 09:10:06,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:06,272 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-10-03 09:10:06,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-03 09:10:06,272 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 136 [2018-10-03 09:10:06,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:06,273 INFO L225 Difference]: With dead ends: 141 [2018-10-03 09:10:06,273 INFO L226 Difference]: Without dead ends: 139 [2018-10-03 09:10:06,273 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.1s impTime 67 [2018-10-03 09:10:06,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-03 09:10:06,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-10-03 09:10:06,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-03 09:10:06,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-10-03 09:10:06,278 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 136 [2018-10-03 09:10:06,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:06,278 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-10-03 09:10:06,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-03 09:10:06,278 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-10-03 09:10:06,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-03 09:10:06,279 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:06,279 INFO L375 BasicCegarLoop]: trace histogram [68, 67, 1, 1, 1] [2018-10-03 09:10:06,279 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:06,279 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:06,280 INFO L82 PathProgramCache]: Analyzing trace with hash 34827253, now seen corresponding path program 67 times [2018-10-03 09:10:06,280 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:06,280 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:06,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:06,280 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:06,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:08,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:08,602 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:08,602 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:10:08,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:10:08,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:08,646 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:08,916 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:08,936 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:08,936 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-03 09:10:08,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-03 09:10:08,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-03 09:10:08,937 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:08,937 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 70 states. [2018-10-03 09:10:09,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:09,130 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-10-03 09:10:09,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-03 09:10:09,130 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 138 [2018-10-03 09:10:09,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:09,131 INFO L225 Difference]: With dead ends: 143 [2018-10-03 09:10:09,131 INFO L226 Difference]: Without dead ends: 141 [2018-10-03 09:10:09,131 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.1s impTime 68 [2018-10-03 09:10:09,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-10-03 09:10:09,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-10-03 09:10:09,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-10-03 09:10:09,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-10-03 09:10:09,135 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 138 [2018-10-03 09:10:09,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:09,135 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-10-03 09:10:09,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-03 09:10:09,135 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-10-03 09:10:09,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-03 09:10:09,136 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:09,136 INFO L375 BasicCegarLoop]: trace histogram [69, 68, 1, 1, 1] [2018-10-03 09:10:09,136 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:09,136 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:09,137 INFO L82 PathProgramCache]: Analyzing trace with hash -890696145, now seen corresponding path program 68 times [2018-10-03 09:10:09,137 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:09,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:09,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:09,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:10:09,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:09,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:11,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:11,022 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:11,022 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:10:11,030 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:10:11,068 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:10:11,068 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:11,070 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:11,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:11,335 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:11,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-03 09:10:11,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-03 09:10:11,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-03 09:10:11,336 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:11,336 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 71 states. [2018-10-03 09:10:11,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:11,524 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-10-03 09:10:11,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-03 09:10:11,525 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 140 [2018-10-03 09:10:11,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:11,525 INFO L225 Difference]: With dead ends: 145 [2018-10-03 09:10:11,525 INFO L226 Difference]: Without dead ends: 143 [2018-10-03 09:10:11,526 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.7s impTime 69 [2018-10-03 09:10:11,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-03 09:10:11,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-10-03 09:10:11,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-10-03 09:10:11,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-10-03 09:10:11,530 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 140 [2018-10-03 09:10:11,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:11,530 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-10-03 09:10:11,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-03 09:10:11,530 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-10-03 09:10:11,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-03 09:10:11,531 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:11,531 INFO L375 BasicCegarLoop]: trace histogram [70, 69, 1, 1, 1] [2018-10-03 09:10:11,531 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:11,531 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:11,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1260451351, now seen corresponding path program 69 times [2018-10-03 09:10:11,531 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:11,531 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:11,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:11,532 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:11,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:14,155 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:14,155 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:14,155 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 [2018-10-03 09:10:14,162 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:10:14,245 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-10-03 09:10:14,246 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:14,248 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:14,722 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:14,742 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:14,742 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-03 09:10:14,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-03 09:10:14,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-03 09:10:14,743 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:14,743 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 72 states. [2018-10-03 09:10:14,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:14,971 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-10-03 09:10:14,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-03 09:10:14,972 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 142 [2018-10-03 09:10:14,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:14,972 INFO L225 Difference]: With dead ends: 147 [2018-10-03 09:10:14,973 INFO L226 Difference]: Without dead ends: 145 [2018-10-03 09:10:14,973 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.3s impTime 70 [2018-10-03 09:10:14,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-10-03 09:10:14,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-10-03 09:10:14,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-10-03 09:10:14,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-10-03 09:10:14,975 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 142 [2018-10-03 09:10:14,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:14,976 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-10-03 09:10:14,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-03 09:10:14,976 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-10-03 09:10:14,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-03 09:10:14,976 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:14,976 INFO L375 BasicCegarLoop]: trace histogram [71, 70, 1, 1, 1] [2018-10-03 09:10:14,977 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:14,977 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:14,977 INFO L82 PathProgramCache]: Analyzing trace with hash -112918749, now seen corresponding path program 70 times [2018-10-03 09:10:14,977 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:14,977 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:14,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:14,978 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:14,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:17,178 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:17,179 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:17,179 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 [2018-10-03 09:10:17,186 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:10:17,222 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:10:17,222 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:17,225 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:17,542 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:17,562 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:17,563 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-10-03 09:10:17,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-03 09:10:17,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-03 09:10:17,563 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:17,564 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 73 states. [2018-10-03 09:10:17,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:17,796 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-10-03 09:10:17,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-03 09:10:17,797 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 144 [2018-10-03 09:10:17,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:17,798 INFO L225 Difference]: With dead ends: 149 [2018-10-03 09:10:17,798 INFO L226 Difference]: Without dead ends: 147 [2018-10-03 09:10:17,798 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.0s impTime 71 [2018-10-03 09:10:17,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-10-03 09:10:17,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-10-03 09:10:17,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-10-03 09:10:17,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-10-03 09:10:17,802 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 144 [2018-10-03 09:10:17,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:17,802 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-10-03 09:10:17,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-03 09:10:17,802 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-10-03 09:10:17,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-03 09:10:17,803 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:17,803 INFO L375 BasicCegarLoop]: trace histogram [72, 71, 1, 1, 1] [2018-10-03 09:10:17,803 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:17,803 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:17,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1140683299, now seen corresponding path program 71 times [2018-10-03 09:10:17,804 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:17,804 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:17,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:17,804 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:17,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:17,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:19,787 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:19,787 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:19,787 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 [2018-10-03 09:10:19,795 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:10:20,251 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2018-10-03 09:10:20,251 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:20,255 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:20,627 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:20,649 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:20,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-03 09:10:20,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-03 09:10:20,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-03 09:10:20,651 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:20,651 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 74 states. [2018-10-03 09:10:20,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:20,871 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-10-03 09:10:20,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-03 09:10:20,872 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 146 [2018-10-03 09:10:20,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:20,873 INFO L225 Difference]: With dead ends: 151 [2018-10-03 09:10:20,873 INFO L226 Difference]: Without dead ends: 149 [2018-10-03 09:10:20,873 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.7s impTime 72 [2018-10-03 09:10:20,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-10-03 09:10:20,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-10-03 09:10:20,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-10-03 09:10:20,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-10-03 09:10:20,877 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 146 [2018-10-03 09:10:20,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:20,877 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-10-03 09:10:20,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-03 09:10:20,877 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-10-03 09:10:20,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-03 09:10:20,878 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:20,878 INFO L375 BasicCegarLoop]: trace histogram [73, 72, 1, 1, 1] [2018-10-03 09:10:20,878 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:20,878 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:20,878 INFO L82 PathProgramCache]: Analyzing trace with hash -979937769, now seen corresponding path program 72 times [2018-10-03 09:10:20,879 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:20,879 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:20,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:20,879 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:20,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:22,260 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:22,261 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:22,261 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 [2018-10-03 09:10:22,268 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:10:22,338 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-10-03 09:10:22,338 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:22,341 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:22,631 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:22,651 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:22,652 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-10-03 09:10:22,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-03 09:10:22,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-03 09:10:22,652 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:22,653 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 75 states. [2018-10-03 09:10:22,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:22,818 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-10-03 09:10:22,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-03 09:10:22,818 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 148 [2018-10-03 09:10:22,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:22,820 INFO L225 Difference]: With dead ends: 153 [2018-10-03 09:10:22,820 INFO L226 Difference]: Without dead ends: 151 [2018-10-03 09:10:22,820 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime 73 [2018-10-03 09:10:22,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-10-03 09:10:22,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-10-03 09:10:22,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-03 09:10:22,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-10-03 09:10:22,823 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 148 [2018-10-03 09:10:22,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:22,824 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-10-03 09:10:22,824 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-03 09:10:22,824 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-10-03 09:10:22,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-03 09:10:22,825 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:22,825 INFO L375 BasicCegarLoop]: trace histogram [74, 73, 1, 1, 1] [2018-10-03 09:10:22,825 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:22,825 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:22,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1122306095, now seen corresponding path program 73 times [2018-10-03 09:10:22,825 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:22,825 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:22,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:22,826 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:22,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:25,378 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:25,378 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:25,378 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 [2018-10-03 09:10:25,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:10:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:25,428 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:25,691 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:25,711 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:25,711 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-03 09:10:25,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-03 09:10:25,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-03 09:10:25,712 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:25,712 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 76 states. [2018-10-03 09:10:25,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:25,941 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-10-03 09:10:25,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-03 09:10:25,941 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 150 [2018-10-03 09:10:25,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:25,942 INFO L225 Difference]: With dead ends: 155 [2018-10-03 09:10:25,942 INFO L226 Difference]: Without dead ends: 153 [2018-10-03 09:10:25,942 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.3s impTime 74 [2018-10-03 09:10:25,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-10-03 09:10:25,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-10-03 09:10:25,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-10-03 09:10:25,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2018-10-03 09:10:25,946 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 150 [2018-10-03 09:10:25,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:25,946 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2018-10-03 09:10:25,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-03 09:10:25,946 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2018-10-03 09:10:25,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-03 09:10:25,946 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:25,947 INFO L375 BasicCegarLoop]: trace histogram [75, 74, 1, 1, 1] [2018-10-03 09:10:25,947 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:25,947 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:25,947 INFO L82 PathProgramCache]: Analyzing trace with hash -499313909, now seen corresponding path program 74 times [2018-10-03 09:10:25,947 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:25,947 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:25,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:25,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:10:25,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:27,358 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:27,358 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:27,358 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 [2018-10-03 09:10:27,366 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:10:27,402 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:10:27,403 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:27,405 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:27,672 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:27,692 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:27,693 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-10-03 09:10:27,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-03 09:10:27,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-03 09:10:27,693 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:27,694 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 77 states. [2018-10-03 09:10:27,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:27,841 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-10-03 09:10:27,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-03 09:10:27,842 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 152 [2018-10-03 09:10:27,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:27,842 INFO L225 Difference]: With dead ends: 157 [2018-10-03 09:10:27,843 INFO L226 Difference]: Without dead ends: 155 [2018-10-03 09:10:27,843 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime 75 [2018-10-03 09:10:27,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-10-03 09:10:27,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-10-03 09:10:27,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-10-03 09:10:27,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-10-03 09:10:27,845 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 152 [2018-10-03 09:10:27,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:27,846 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-10-03 09:10:27,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-03 09:10:27,846 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-10-03 09:10:27,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-03 09:10:27,846 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:27,846 INFO L375 BasicCegarLoop]: trace histogram [76, 75, 1, 1, 1] [2018-10-03 09:10:27,847 INFO L423 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:27,847 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:27,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1195722693, now seen corresponding path program 75 times [2018-10-03 09:10:27,847 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:27,847 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:27,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:27,847 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:27,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:27,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:30,279 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:30,279 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:30,279 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 [2018-10-03 09:10:30,288 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:10:30,371 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2018-10-03 09:10:30,371 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:30,374 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:30,643 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:30,664 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:30,664 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-03 09:10:30,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-03 09:10:30,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-03 09:10:30,665 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:30,665 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 78 states. [2018-10-03 09:10:30,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:30,885 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-10-03 09:10:30,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-03 09:10:30,886 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 154 [2018-10-03 09:10:30,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:30,887 INFO L225 Difference]: With dead ends: 159 [2018-10-03 09:10:30,887 INFO L226 Difference]: Without dead ends: 157 [2018-10-03 09:10:30,887 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.2s impTime 76 [2018-10-03 09:10:30,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-10-03 09:10:30,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-10-03 09:10:30,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-10-03 09:10:30,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-10-03 09:10:30,891 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 154 [2018-10-03 09:10:30,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:30,891 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-10-03 09:10:30,891 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-03 09:10:30,891 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-10-03 09:10:30,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-03 09:10:30,892 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:30,892 INFO L375 BasicCegarLoop]: trace histogram [77, 76, 1, 1, 1] [2018-10-03 09:10:30,892 INFO L423 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:30,892 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:30,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1961675265, now seen corresponding path program 76 times [2018-10-03 09:10:30,892 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:30,893 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:30,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:30,893 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:30,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:33,453 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:33,454 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:33,454 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:10:33,462 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:10:33,500 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:10:33,500 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:33,503 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:33,754 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:33,773 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:33,774 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-10-03 09:10:33,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-03 09:10:33,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-03 09:10:33,775 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:33,775 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 79 states. [2018-10-03 09:10:34,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:34,384 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-10-03 09:10:34,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-03 09:10:34,384 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 156 [2018-10-03 09:10:34,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:34,386 INFO L225 Difference]: With dead ends: 161 [2018-10-03 09:10:34,386 INFO L226 Difference]: Without dead ends: 159 [2018-10-03 09:10:34,386 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.3s impTime 77 [2018-10-03 09:10:34,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-03 09:10:34,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-10-03 09:10:34,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-10-03 09:10:34,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-10-03 09:10:34,390 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 156 [2018-10-03 09:10:34,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:34,390 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-10-03 09:10:34,390 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-03 09:10:34,391 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-10-03 09:10:34,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-03 09:10:34,391 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:34,392 INFO L375 BasicCegarLoop]: trace histogram [78, 77, 1, 1, 1] [2018-10-03 09:10:34,392 INFO L423 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:34,392 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:34,392 INFO L82 PathProgramCache]: Analyzing trace with hash 320765369, now seen corresponding path program 77 times [2018-10-03 09:10:34,392 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:34,392 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:34,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:34,393 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:34,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:37,089 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:37,089 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:37,089 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:10:37,098 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:10:37,176 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2018-10-03 09:10:37,176 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:37,179 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:37,460 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:37,480 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:37,480 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-03 09:10:37,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-03 09:10:37,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-03 09:10:37,481 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:37,481 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 80 states. [2018-10-03 09:10:37,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:37,784 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-10-03 09:10:37,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-03 09:10:37,784 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 158 [2018-10-03 09:10:37,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:37,785 INFO L225 Difference]: With dead ends: 163 [2018-10-03 09:10:37,785 INFO L226 Difference]: Without dead ends: 161 [2018-10-03 09:10:37,785 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.3s impTime 78 [2018-10-03 09:10:37,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-10-03 09:10:37,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-10-03 09:10:37,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-10-03 09:10:37,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-10-03 09:10:37,788 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 158 [2018-10-03 09:10:37,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:37,789 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-10-03 09:10:37,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-03 09:10:37,789 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-10-03 09:10:37,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-03 09:10:37,789 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:37,789 INFO L375 BasicCegarLoop]: trace histogram [79, 78, 1, 1, 1] [2018-10-03 09:10:37,790 INFO L423 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:37,790 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:37,790 INFO L82 PathProgramCache]: Analyzing trace with hash -982073613, now seen corresponding path program 78 times [2018-10-03 09:10:37,790 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:37,790 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:37,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:37,791 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:37,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:37,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:40,050 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:40,050 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:40,050 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 [2018-10-03 09:10:40,058 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:10:40,178 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2018-10-03 09:10:40,178 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:40,181 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:40,472 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:40,492 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:40,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-10-03 09:10:40,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-03 09:10:40,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-03 09:10:40,493 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:40,493 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 81 states. [2018-10-03 09:10:40,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:40,693 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-10-03 09:10:40,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-03 09:10:40,693 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 160 [2018-10-03 09:10:40,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:40,694 INFO L225 Difference]: With dead ends: 165 [2018-10-03 09:10:40,694 INFO L226 Difference]: Without dead ends: 163 [2018-10-03 09:10:40,695 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.0s impTime 79 [2018-10-03 09:10:40,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-10-03 09:10:40,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-10-03 09:10:40,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-10-03 09:10:40,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-10-03 09:10:40,699 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 160 [2018-10-03 09:10:40,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:40,699 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-10-03 09:10:40,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-03 09:10:40,699 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-10-03 09:10:40,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-03 09:10:40,700 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:40,700 INFO L375 BasicCegarLoop]: trace histogram [80, 79, 1, 1, 1] [2018-10-03 09:10:40,701 INFO L423 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:40,701 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:40,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1120115117, now seen corresponding path program 79 times [2018-10-03 09:10:40,701 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:40,701 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:40,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:40,702 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:40,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:42,477 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:42,477 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:42,478 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:10:42,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:10:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:42,538 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:42,878 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:42,898 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:42,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-03 09:10:42,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-03 09:10:42,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-03 09:10:42,899 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:42,899 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 82 states. [2018-10-03 09:10:43,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:43,111 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-10-03 09:10:43,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-03 09:10:43,111 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 162 [2018-10-03 09:10:43,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:43,112 INFO L225 Difference]: With dead ends: 167 [2018-10-03 09:10:43,112 INFO L226 Difference]: Without dead ends: 165 [2018-10-03 09:10:43,112 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.5s impTime 80 [2018-10-03 09:10:43,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-10-03 09:10:43,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-10-03 09:10:43,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-10-03 09:10:43,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2018-10-03 09:10:43,115 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 162 [2018-10-03 09:10:43,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:43,115 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2018-10-03 09:10:43,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-03 09:10:43,115 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2018-10-03 09:10:43,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-03 09:10:43,116 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:43,116 INFO L375 BasicCegarLoop]: trace histogram [81, 80, 1, 1, 1] [2018-10-03 09:10:43,117 INFO L423 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:43,117 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:43,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1606111769, now seen corresponding path program 80 times [2018-10-03 09:10:43,117 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:43,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:43,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:43,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:10:43,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:43,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:45,946 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:45,947 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:45,947 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:10:45,954 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:10:45,995 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:10:45,996 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:45,998 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:46,274 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:46,294 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:46,294 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-10-03 09:10:46,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-03 09:10:46,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-03 09:10:46,295 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:46,295 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand 83 states. [2018-10-03 09:10:46,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:46,561 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-10-03 09:10:46,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-03 09:10:46,561 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 164 [2018-10-03 09:10:46,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:46,562 INFO L225 Difference]: With dead ends: 169 [2018-10-03 09:10:46,562 INFO L226 Difference]: Without dead ends: 167 [2018-10-03 09:10:46,562 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.5s impTime 81 [2018-10-03 09:10:46,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-10-03 09:10:46,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-10-03 09:10:46,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-10-03 09:10:46,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-10-03 09:10:46,565 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 164 [2018-10-03 09:10:46,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:46,565 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-10-03 09:10:46,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-03 09:10:46,565 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-10-03 09:10:46,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-03 09:10:46,566 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:46,566 INFO L375 BasicCegarLoop]: trace histogram [82, 81, 1, 1, 1] [2018-10-03 09:10:46,566 INFO L423 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:46,566 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:46,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1580098655, now seen corresponding path program 81 times [2018-10-03 09:10:46,567 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:46,567 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:46,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:46,567 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:46,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:46,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:48,878 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:48,878 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:48,878 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 [2018-10-03 09:10:48,885 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:10:48,978 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s) [2018-10-03 09:10:48,978 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:48,981 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:49,318 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:49,338 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:49,338 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-10-03 09:10:49,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-03 09:10:49,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-03 09:10:49,339 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:49,339 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 84 states. [2018-10-03 09:10:49,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:49,591 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-10-03 09:10:49,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-03 09:10:49,591 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 166 [2018-10-03 09:10:49,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:49,592 INFO L225 Difference]: With dead ends: 171 [2018-10-03 09:10:49,592 INFO L226 Difference]: Without dead ends: 169 [2018-10-03 09:10:49,592 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.0s impTime 82 [2018-10-03 09:10:49,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-10-03 09:10:49,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-10-03 09:10:49,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-10-03 09:10:49,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-10-03 09:10:49,595 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 166 [2018-10-03 09:10:49,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:49,595 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-10-03 09:10:49,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-03 09:10:49,595 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-10-03 09:10:49,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-03 09:10:49,596 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:49,596 INFO L375 BasicCegarLoop]: trace histogram [83, 82, 1, 1, 1] [2018-10-03 09:10:49,596 INFO L423 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:49,596 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:49,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1943667419, now seen corresponding path program 82 times [2018-10-03 09:10:49,597 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:49,597 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:49,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:49,597 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:49,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:51,514 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:51,515 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:51,515 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:10:51,524 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:10:51,568 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:10:51,568 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:51,571 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:52,094 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:52,114 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:52,114 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-10-03 09:10:52,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-03 09:10:52,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-03 09:10:52,115 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:52,115 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 85 states. [2018-10-03 09:10:52,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:52,288 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-10-03 09:10:52,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-03 09:10:52,288 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 168 [2018-10-03 09:10:52,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:52,289 INFO L225 Difference]: With dead ends: 173 [2018-10-03 09:10:52,289 INFO L226 Difference]: Without dead ends: 171 [2018-10-03 09:10:52,289 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.6s impTime 83 [2018-10-03 09:10:52,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-10-03 09:10:52,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-10-03 09:10:52,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-10-03 09:10:52,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-10-03 09:10:52,292 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 168 [2018-10-03 09:10:52,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:52,293 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-10-03 09:10:52,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-03 09:10:52,293 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-10-03 09:10:52,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-03 09:10:52,293 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:52,293 INFO L375 BasicCegarLoop]: trace histogram [84, 83, 1, 1, 1] [2018-10-03 09:10:52,294 INFO L423 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:52,294 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:52,294 INFO L82 PathProgramCache]: Analyzing trace with hash -446332011, now seen corresponding path program 83 times [2018-10-03 09:10:52,294 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:52,294 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:52,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:52,295 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:52,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:52,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:54,893 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:54,893 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:54,893 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:10:54,903 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:10:54,987 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2018-10-03 09:10:54,987 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:54,990 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:55,286 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:55,306 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:55,307 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-03 09:10:55,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-03 09:10:55,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-03 09:10:55,308 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:55,308 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 86 states. [2018-10-03 09:10:55,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:55,567 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-10-03 09:10:55,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-03 09:10:55,568 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 170 [2018-10-03 09:10:55,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:55,569 INFO L225 Difference]: With dead ends: 175 [2018-10-03 09:10:55,569 INFO L226 Difference]: Without dead ends: 173 [2018-10-03 09:10:55,569 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.3s impTime 84 [2018-10-03 09:10:55,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-10-03 09:10:55,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-10-03 09:10:55,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-10-03 09:10:55,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2018-10-03 09:10:55,572 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 170 [2018-10-03 09:10:55,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:55,572 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2018-10-03 09:10:55,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-03 09:10:55,573 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2018-10-03 09:10:55,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-03 09:10:55,573 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:55,573 INFO L375 BasicCegarLoop]: trace histogram [85, 84, 1, 1, 1] [2018-10-03 09:10:55,573 INFO L423 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:55,574 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:55,574 INFO L82 PathProgramCache]: Analyzing trace with hash 571719119, now seen corresponding path program 84 times [2018-10-03 09:10:55,574 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:55,574 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:55,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:55,575 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:55,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:55,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:56,903 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:56,903 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:56,903 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 [2018-10-03 09:10:56,913 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:10:57,006 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2018-10-03 09:10:57,006 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:57,009 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:57,311 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:57,331 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:57,331 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-10-03 09:10:57,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-03 09:10:57,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-03 09:10:57,332 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:57,332 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 87 states. [2018-10-03 09:10:57,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:57,591 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-10-03 09:10:57,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-03 09:10:57,591 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 172 [2018-10-03 09:10:57,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:57,592 INFO L225 Difference]: With dead ends: 177 [2018-10-03 09:10:57,592 INFO L226 Difference]: Without dead ends: 175 [2018-10-03 09:10:57,592 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime 85 [2018-10-03 09:10:57,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-10-03 09:10:57,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-10-03 09:10:57,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-10-03 09:10:57,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-10-03 09:10:57,596 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 172 [2018-10-03 09:10:57,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:57,596 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-10-03 09:10:57,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-03 09:10:57,597 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-10-03 09:10:57,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-03 09:10:57,597 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:57,597 INFO L375 BasicCegarLoop]: trace histogram [86, 85, 1, 1, 1] [2018-10-03 09:10:57,599 INFO L423 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:57,600 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:57,600 INFO L82 PathProgramCache]: Analyzing trace with hash -333688439, now seen corresponding path program 85 times [2018-10-03 09:10:57,600 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:57,600 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:57,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:57,601 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:57,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:57,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:58,915 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:58,915 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:58,915 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:10:58,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:10:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:58,975 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:59,295 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:59,315 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:59,315 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-03 09:10:59,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-03 09:10:59,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-03 09:10:59,317 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:59,317 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 88 states. [2018-10-03 09:10:59,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:59,533 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-10-03 09:10:59,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-03 09:10:59,534 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 174 [2018-10-03 09:10:59,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:59,535 INFO L225 Difference]: With dead ends: 179 [2018-10-03 09:10:59,535 INFO L226 Difference]: Without dead ends: 177 [2018-10-03 09:10:59,535 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.0s impTime 86 [2018-10-03 09:10:59,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-10-03 09:10:59,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-10-03 09:10:59,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-10-03 09:10:59,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2018-10-03 09:10:59,538 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 174 [2018-10-03 09:10:59,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:59,539 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2018-10-03 09:10:59,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-03 09:10:59,539 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2018-10-03 09:10:59,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-03 09:10:59,540 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:59,540 INFO L375 BasicCegarLoop]: trace histogram [87, 86, 1, 1, 1] [2018-10-03 09:10:59,540 INFO L423 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:59,540 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:59,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1448009411, now seen corresponding path program 86 times [2018-10-03 09:10:59,541 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:59,541 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:59,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:59,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:10:59,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:01,050 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:01,050 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:01,051 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:11:01,059 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:11:01,104 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:11:01,104 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:01,107 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:01,426 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:01,447 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:01,447 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-10-03 09:11:01,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-03 09:11:01,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-03 09:11:01,448 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:01,448 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 89 states. [2018-10-03 09:11:01,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:01,780 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-10-03 09:11:01,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-03 09:11:01,781 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 176 [2018-10-03 09:11:01,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:01,782 INFO L225 Difference]: With dead ends: 181 [2018-10-03 09:11:01,782 INFO L226 Difference]: Without dead ends: 179 [2018-10-03 09:11:01,782 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime 87 [2018-10-03 09:11:01,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-10-03 09:11:01,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-10-03 09:11:01,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-03 09:11:01,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-10-03 09:11:01,785 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 176 [2018-10-03 09:11:01,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:01,785 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-10-03 09:11:01,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-03 09:11:01,785 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-10-03 09:11:01,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-03 09:11:01,786 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:01,786 INFO L375 BasicCegarLoop]: trace histogram [88, 87, 1, 1, 1] [2018-10-03 09:11:01,786 INFO L423 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:01,786 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:01,786 INFO L82 PathProgramCache]: Analyzing trace with hash -32307843, now seen corresponding path program 87 times [2018-10-03 09:11:01,786 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:01,786 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:01,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:01,787 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:01,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:03,458 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:03,458 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:03,458 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:11:03,478 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:11:03,576 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 88 check-sat command(s) [2018-10-03 09:11:03,576 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:03,579 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:04,059 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:04,079 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:04,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-10-03 09:11:04,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-03 09:11:04,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-03 09:11:04,080 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:04,080 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 90 states. [2018-10-03 09:11:04,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:04,363 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-10-03 09:11:04,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-03 09:11:04,364 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 178 [2018-10-03 09:11:04,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:04,365 INFO L225 Difference]: With dead ends: 183 [2018-10-03 09:11:04,365 INFO L226 Difference]: Without dead ends: 181 [2018-10-03 09:11:04,365 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.4s impTime 88 [2018-10-03 09:11:04,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-10-03 09:11:04,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-10-03 09:11:04,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-10-03 09:11:04,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2018-10-03 09:11:04,368 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 178 [2018-10-03 09:11:04,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:04,368 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2018-10-03 09:11:04,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-03 09:11:04,368 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2018-10-03 09:11:04,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-03 09:11:04,369 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:04,369 INFO L375 BasicCegarLoop]: trace histogram [89, 88, 1, 1, 1] [2018-10-03 09:11:04,369 INFO L423 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:04,369 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:04,369 INFO L82 PathProgramCache]: Analyzing trace with hash -983013961, now seen corresponding path program 88 times [2018-10-03 09:11:04,369 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:04,370 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:04,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:04,370 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:04,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:06,096 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:06,097 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:06,097 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:11:06,106 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:11:06,149 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:11:06,150 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:06,152 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:06,455 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:06,476 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:06,476 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-10-03 09:11:06,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-03 09:11:06,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-03 09:11:06,477 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:06,477 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 91 states. [2018-10-03 09:11:06,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:06,805 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-10-03 09:11:06,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-03 09:11:06,806 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 180 [2018-10-03 09:11:06,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:06,807 INFO L225 Difference]: With dead ends: 185 [2018-10-03 09:11:06,807 INFO L226 Difference]: Without dead ends: 183 [2018-10-03 09:11:06,807 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.4s impTime 89 [2018-10-03 09:11:06,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-03 09:11:06,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-10-03 09:11:06,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-10-03 09:11:06,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-10-03 09:11:06,810 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 180 [2018-10-03 09:11:06,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:06,810 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-10-03 09:11:06,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-03 09:11:06,810 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-10-03 09:11:06,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-03 09:11:06,811 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:06,811 INFO L375 BasicCegarLoop]: trace histogram [90, 89, 1, 1, 1] [2018-10-03 09:11:06,811 INFO L423 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:06,811 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:06,812 INFO L82 PathProgramCache]: Analyzing trace with hash 216440689, now seen corresponding path program 89 times [2018-10-03 09:11:06,812 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:06,812 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:06,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:06,812 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:06,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:07,948 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:07,948 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:07,948 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:11:07,956 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:11:08,047 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2018-10-03 09:11:08,047 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:08,051 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:08,353 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:08,374 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:08,374 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-10-03 09:11:08,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-03 09:11:08,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-03 09:11:08,375 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:08,375 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 92 states. [2018-10-03 09:11:08,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:08,608 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-10-03 09:11:08,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-03 09:11:08,609 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 182 [2018-10-03 09:11:08,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:08,610 INFO L225 Difference]: With dead ends: 187 [2018-10-03 09:11:08,610 INFO L226 Difference]: Without dead ends: 185 [2018-10-03 09:11:08,610 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.8s impTime 90 [2018-10-03 09:11:08,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-10-03 09:11:08,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-10-03 09:11:08,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-03 09:11:08,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-10-03 09:11:08,613 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 182 [2018-10-03 09:11:08,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:08,614 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-10-03 09:11:08,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-03 09:11:08,614 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-10-03 09:11:08,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-03 09:11:08,614 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:08,614 INFO L375 BasicCegarLoop]: trace histogram [91, 90, 1, 1, 1] [2018-10-03 09:11:08,615 INFO L423 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:08,615 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:08,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1841124011, now seen corresponding path program 90 times [2018-10-03 09:11:08,615 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:08,615 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:08,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:08,616 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:08,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:10,283 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:10,283 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:10,283 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:11:10,290 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:11:10,387 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2018-10-03 09:11:10,387 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:10,390 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:10,711 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:10,733 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:10,733 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-10-03 09:11:10,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-03 09:11:10,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-03 09:11:10,734 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:10,734 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 93 states. [2018-10-03 09:11:10,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:10,977 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-10-03 09:11:10,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-03 09:11:10,977 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 184 [2018-10-03 09:11:10,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:10,978 INFO L225 Difference]: With dead ends: 189 [2018-10-03 09:11:10,978 INFO L226 Difference]: Without dead ends: 187 [2018-10-03 09:11:10,978 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.3s impTime 91 [2018-10-03 09:11:10,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-10-03 09:11:10,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-10-03 09:11:10,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-10-03 09:11:10,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-10-03 09:11:10,982 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 184 [2018-10-03 09:11:10,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:10,983 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-10-03 09:11:10,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-03 09:11:10,983 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-10-03 09:11:10,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-03 09:11:10,984 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:10,984 INFO L375 BasicCegarLoop]: trace histogram [92, 91, 1, 1, 1] [2018-10-03 09:11:10,984 INFO L423 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:10,984 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:10,984 INFO L82 PathProgramCache]: Analyzing trace with hash -206299291, now seen corresponding path program 91 times [2018-10-03 09:11:10,984 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:10,985 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:10,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:10,985 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:10,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:12,300 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:12,301 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:12,301 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:11:12,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:11:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:12,356 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:12,674 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:12,693 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:12,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-10-03 09:11:12,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-03 09:11:12,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-03 09:11:12,695 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:12,695 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 94 states. [2018-10-03 09:11:12,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:12,980 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-10-03 09:11:12,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-03 09:11:12,981 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 186 [2018-10-03 09:11:12,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:12,982 INFO L225 Difference]: With dead ends: 191 [2018-10-03 09:11:12,982 INFO L226 Difference]: Without dead ends: 189 [2018-10-03 09:11:12,982 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime 92 [2018-10-03 09:11:12,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-10-03 09:11:12,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-10-03 09:11:12,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-10-03 09:11:12,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2018-10-03 09:11:12,986 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 186 [2018-10-03 09:11:12,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:12,986 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2018-10-03 09:11:12,986 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-03 09:11:12,986 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2018-10-03 09:11:12,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-03 09:11:12,987 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:12,987 INFO L375 BasicCegarLoop]: trace histogram [93, 92, 1, 1, 1] [2018-10-03 09:11:12,987 INFO L423 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:12,988 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:12,988 INFO L82 PathProgramCache]: Analyzing trace with hash -685070945, now seen corresponding path program 92 times [2018-10-03 09:11:12,988 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:12,988 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:12,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:12,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:11:12,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:14,552 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:14,552 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:14,552 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:11:14,560 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:11:14,606 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:11:14,606 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:14,609 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:14,994 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:15,014 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:15,015 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-10-03 09:11:15,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-03 09:11:15,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-03 09:11:15,016 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:15,016 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand 95 states. [2018-10-03 09:11:15,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:15,265 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-10-03 09:11:15,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-03 09:11:15,265 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 188 [2018-10-03 09:11:15,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:15,266 INFO L225 Difference]: With dead ends: 193 [2018-10-03 09:11:15,266 INFO L226 Difference]: Without dead ends: 191 [2018-10-03 09:11:15,267 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.2s impTime 93 [2018-10-03 09:11:15,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-10-03 09:11:15,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-10-03 09:11:15,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-10-03 09:11:15,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-10-03 09:11:15,270 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 188 [2018-10-03 09:11:15,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:15,271 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-10-03 09:11:15,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-03 09:11:15,271 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-10-03 09:11:15,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-03 09:11:15,272 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:15,272 INFO L375 BasicCegarLoop]: trace histogram [94, 93, 1, 1, 1] [2018-10-03 09:11:15,272 INFO L423 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:15,272 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:15,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1223129767, now seen corresponding path program 93 times [2018-10-03 09:11:15,272 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:15,273 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:15,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:15,273 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:15,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:17,009 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:17,009 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:17,009 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:11:17,016 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:11:17,124 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 94 check-sat command(s) [2018-10-03 09:11:17,124 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:17,127 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:17,440 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:17,460 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:17,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-10-03 09:11:17,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-03 09:11:17,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-03 09:11:17,461 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:17,462 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 96 states. [2018-10-03 09:11:17,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:17,769 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-10-03 09:11:17,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-03 09:11:17,769 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 190 [2018-10-03 09:11:17,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:17,770 INFO L225 Difference]: With dead ends: 195 [2018-10-03 09:11:17,770 INFO L226 Difference]: Without dead ends: 193 [2018-10-03 09:11:17,771 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.3s impTime 94 [2018-10-03 09:11:17,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-10-03 09:11:17,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-10-03 09:11:17,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-10-03 09:11:17,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2018-10-03 09:11:17,774 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 190 [2018-10-03 09:11:17,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:17,774 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2018-10-03 09:11:17,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-03 09:11:17,774 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2018-10-03 09:11:17,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-03 09:11:17,774 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:17,775 INFO L375 BasicCegarLoop]: trace histogram [95, 94, 1, 1, 1] [2018-10-03 09:11:17,775 INFO L423 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:17,775 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:17,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1393385107, now seen corresponding path program 94 times [2018-10-03 09:11:17,775 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:17,775 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:17,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:17,776 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:17,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:20,072 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:20,072 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:20,072 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:11:20,080 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:11:20,129 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:11:20,129 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:20,132 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:20,485 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:20,506 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:20,507 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-10-03 09:11:20,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-03 09:11:20,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-03 09:11:20,508 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:20,508 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 97 states. [2018-10-03 09:11:20,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:20,856 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-10-03 09:11:20,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-03 09:11:20,857 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 192 [2018-10-03 09:11:20,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:20,858 INFO L225 Difference]: With dead ends: 197 [2018-10-03 09:11:20,858 INFO L226 Difference]: Without dead ends: 195 [2018-10-03 09:11:20,858 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.0s impTime 95 [2018-10-03 09:11:20,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-03 09:11:20,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-10-03 09:11:20,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-10-03 09:11:20,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-10-03 09:11:20,863 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 192 [2018-10-03 09:11:20,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:20,863 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-10-03 09:11:20,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-03 09:11:20,863 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-10-03 09:11:20,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-03 09:11:20,864 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:20,864 INFO L375 BasicCegarLoop]: trace histogram [96, 95, 1, 1, 1] [2018-10-03 09:11:20,864 INFO L423 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:20,864 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:20,864 INFO L82 PathProgramCache]: Analyzing trace with hash -986656435, now seen corresponding path program 95 times [2018-10-03 09:11:20,864 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:20,865 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:20,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:20,865 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:20,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:20,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:22,460 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:22,460 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:22,460 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 [2018-10-03 09:11:22,470 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:11:22,573 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 96 check-sat command(s) [2018-10-03 09:11:22,574 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:22,577 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:22,929 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:22,950 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:22,950 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-10-03 09:11:22,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-03 09:11:22,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-03 09:11:22,952 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:22,952 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 98 states. [2018-10-03 09:11:23,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:23,303 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-10-03 09:11:23,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-03 09:11:23,303 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 194 [2018-10-03 09:11:23,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:23,304 INFO L225 Difference]: With dead ends: 199 [2018-10-03 09:11:23,304 INFO L226 Difference]: Without dead ends: 197 [2018-10-03 09:11:23,304 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.3s impTime 96 [2018-10-03 09:11:23,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-10-03 09:11:23,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-10-03 09:11:23,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-10-03 09:11:23,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-10-03 09:11:23,308 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 194 [2018-10-03 09:11:23,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:23,309 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-10-03 09:11:23,309 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-03 09:11:23,309 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-10-03 09:11:23,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-03 09:11:23,310 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:23,310 INFO L375 BasicCegarLoop]: trace histogram [97, 96, 1, 1, 1] [2018-10-03 09:11:23,310 INFO L423 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:23,310 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:23,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1010990471, now seen corresponding path program 96 times [2018-10-03 09:11:23,310 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:23,310 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:23,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:23,311 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:23,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:25,106 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:25,107 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:25,107 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:11:25,115 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:11:25,227 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 97 check-sat command(s) [2018-10-03 09:11:25,227 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:25,231 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:25,586 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:25,606 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:25,607 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-10-03 09:11:25,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-10-03 09:11:25,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-10-03 09:11:25,608 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:25,608 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 99 states. [2018-10-03 09:11:25,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:25,908 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-10-03 09:11:25,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-03 09:11:25,909 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 196 [2018-10-03 09:11:25,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:25,910 INFO L225 Difference]: With dead ends: 201 [2018-10-03 09:11:25,910 INFO L226 Difference]: Without dead ends: 199 [2018-10-03 09:11:25,910 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.4s impTime 97 [2018-10-03 09:11:25,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-10-03 09:11:25,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-10-03 09:11:25,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-03 09:11:25,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-10-03 09:11:25,914 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 196 [2018-10-03 09:11:25,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:25,915 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-10-03 09:11:25,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-10-03 09:11:25,915 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-10-03 09:11:25,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-03 09:11:25,916 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:25,916 INFO L375 BasicCegarLoop]: trace histogram [98, 97, 1, 1, 1] [2018-10-03 09:11:25,916 INFO L423 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:25,916 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:25,916 INFO L82 PathProgramCache]: Analyzing trace with hash 899285825, now seen corresponding path program 97 times [2018-10-03 09:11:25,917 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:25,917 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:25,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:25,917 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:25,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:25,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:27,627 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:27,627 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:27,627 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 [2018-10-03 09:11:27,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:11:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:27,687 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:28,050 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:28,071 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:28,072 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-10-03 09:11:28,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-03 09:11:28,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-03 09:11:28,073 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:28,073 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 100 states. [2018-10-03 09:11:28,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:28,421 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-10-03 09:11:28,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-03 09:11:28,421 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 198 [2018-10-03 09:11:28,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:28,422 INFO L225 Difference]: With dead ends: 203 [2018-10-03 09:11:28,422 INFO L226 Difference]: Without dead ends: 201 [2018-10-03 09:11:28,422 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.4s impTime 98 [2018-10-03 09:11:28,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-10-03 09:11:28,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-10-03 09:11:28,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-10-03 09:11:28,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2018-10-03 09:11:28,426 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 198 [2018-10-03 09:11:28,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:28,426 INFO L480 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2018-10-03 09:11:28,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-03 09:11:28,426 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2018-10-03 09:11:28,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-03 09:11:28,427 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:28,427 INFO L375 BasicCegarLoop]: trace histogram [99, 98, 1, 1, 1] [2018-10-03 09:11:28,427 INFO L423 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:28,427 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:28,427 INFO L82 PathProgramCache]: Analyzing trace with hash 925303419, now seen corresponding path program 98 times [2018-10-03 09:11:28,427 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:28,427 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:28,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:28,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:11:28,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:30,491 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:30,491 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:30,491 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 [2018-10-03 09:11:30,499 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:11:30,547 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:11:30,547 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:30,550 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:30,902 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:30,922 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:30,922 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-10-03 09:11:30,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-03 09:11:30,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-03 09:11:30,923 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:30,923 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand 101 states. [2018-10-03 09:11:31,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:31,258 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-10-03 09:11:31,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-03 09:11:31,258 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 200 [2018-10-03 09:11:31,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:31,259 INFO L225 Difference]: With dead ends: 205 [2018-10-03 09:11:31,259 INFO L226 Difference]: Without dead ends: 203 [2018-10-03 09:11:31,260 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.7s impTime 99 [2018-10-03 09:11:31,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-10-03 09:11:31,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-10-03 09:11:31,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-10-03 09:11:31,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-10-03 09:11:31,262 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 200 [2018-10-03 09:11:31,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:31,263 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-10-03 09:11:31,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-03 09:11:31,263 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-10-03 09:11:31,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-03 09:11:31,263 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:31,264 INFO L375 BasicCegarLoop]: trace histogram [100, 99, 1, 1, 1] [2018-10-03 09:11:31,264 INFO L423 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:31,264 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:31,264 INFO L82 PathProgramCache]: Analyzing trace with hash 158407477, now seen corresponding path program 99 times [2018-10-03 09:11:31,264 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:31,264 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:31,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:31,265 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:31,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:32,767 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:32,767 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:32,767 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 [2018-10-03 09:11:32,775 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:11:32,897 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 100 check-sat command(s) [2018-10-03 09:11:32,897 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:32,900 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:33,261 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:33,282 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:33,282 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-10-03 09:11:33,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-03 09:11:33,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-03 09:11:33,283 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:33,283 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 102 states. [2018-10-03 09:11:33,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:33,594 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-10-03 09:11:33,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-03 09:11:33,594 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 202 [2018-10-03 09:11:33,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:33,596 INFO L225 Difference]: With dead ends: 207 [2018-10-03 09:11:33,596 INFO L226 Difference]: Without dead ends: 205 [2018-10-03 09:11:33,596 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime 100 [2018-10-03 09:11:33,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-10-03 09:11:33,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-10-03 09:11:33,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-10-03 09:11:33,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 205 transitions. [2018-10-03 09:11:33,599 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 205 transitions. Word has length 202 [2018-10-03 09:11:33,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:33,599 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 205 transitions. [2018-10-03 09:11:33,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-03 09:11:33,599 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 205 transitions. [2018-10-03 09:11:33,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-10-03 09:11:33,600 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:33,600 INFO L375 BasicCegarLoop]: trace histogram [101, 100, 1, 1, 1] [2018-10-03 09:11:33,600 INFO L423 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:33,600 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:33,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1905782127, now seen corresponding path program 100 times [2018-10-03 09:11:33,601 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:33,601 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:33,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:33,601 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:33,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:35,233 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:35,233 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:35,233 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 [2018-10-03 09:11:35,241 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:11:35,292 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:11:35,293 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:35,296 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:35,648 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:35,668 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:35,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-10-03 09:11:35,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-03 09:11:35,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-03 09:11:35,670 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:35,670 INFO L87 Difference]: Start difference. First operand 205 states and 205 transitions. Second operand 103 states. [2018-10-03 09:11:35,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:35,973 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-10-03 09:11:35,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-03 09:11:35,973 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 204 [2018-10-03 09:11:35,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:35,974 INFO L225 Difference]: With dead ends: 209 [2018-10-03 09:11:35,974 INFO L226 Difference]: Without dead ends: 207 [2018-10-03 09:11:35,974 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.3s impTime 101 [2018-10-03 09:11:35,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-10-03 09:11:35,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-10-03 09:11:35,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-10-03 09:11:35,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-10-03 09:11:35,978 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 204 [2018-10-03 09:11:35,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:35,979 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-10-03 09:11:35,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-03 09:11:35,979 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-10-03 09:11:35,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-03 09:11:35,980 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:35,980 INFO L375 BasicCegarLoop]: trace histogram [102, 101, 1, 1, 1] [2018-10-03 09:11:35,980 INFO L423 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:35,980 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:35,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1800608041, now seen corresponding path program 101 times [2018-10-03 09:11:35,981 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:35,981 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:35,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:35,981 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:35,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:36,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:38,518 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:38,519 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:38,519 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 [2018-10-03 09:11:38,526 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:11:38,772 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 102 check-sat command(s) [2018-10-03 09:11:38,773 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:38,778 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:39,244 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:39,264 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:39,264 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-10-03 09:11:39,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-03 09:11:39,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-03 09:11:39,266 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:39,266 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 104 states. [2018-10-03 09:11:39,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:39,717 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-10-03 09:11:39,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-03 09:11:39,717 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 206 [2018-10-03 09:11:39,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:39,718 INFO L225 Difference]: With dead ends: 211 [2018-10-03 09:11:39,718 INFO L226 Difference]: Without dead ends: 209 [2018-10-03 09:11:39,719 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.2s impTime 102 [2018-10-03 09:11:39,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-10-03 09:11:39,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-10-03 09:11:39,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-10-03 09:11:39,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2018-10-03 09:11:39,722 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 206 [2018-10-03 09:11:39,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:39,722 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2018-10-03 09:11:39,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-03 09:11:39,722 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2018-10-03 09:11:39,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-03 09:11:39,723 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:39,723 INFO L375 BasicCegarLoop]: trace histogram [103, 102, 1, 1, 1] [2018-10-03 09:11:39,723 INFO L423 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:39,723 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:39,723 INFO L82 PathProgramCache]: Analyzing trace with hash -487440797, now seen corresponding path program 102 times [2018-10-03 09:11:39,723 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:39,723 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:39,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:39,724 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:39,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:41,434 INFO L134 CoverageAnalysis]: Checked inductivity of 10506 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:41,434 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:41,434 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:11:41,441 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:11:41,554 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2018-10-03 09:11:41,554 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:41,558 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:41,932 INFO L134 CoverageAnalysis]: Checked inductivity of 10506 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:41,953 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:41,953 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-10-03 09:11:41,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-10-03 09:11:41,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-10-03 09:11:41,954 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:41,955 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand 105 states. [2018-10-03 09:11:42,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:42,333 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-10-03 09:11:42,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-03 09:11:42,334 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 208 [2018-10-03 09:11:42,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:42,334 INFO L225 Difference]: With dead ends: 213 [2018-10-03 09:11:42,334 INFO L226 Difference]: Without dead ends: 211 [2018-10-03 09:11:42,335 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.3s impTime 103 [2018-10-03 09:11:42,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-10-03 09:11:42,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-10-03 09:11:42,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-10-03 09:11:42,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-10-03 09:11:42,338 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 208 [2018-10-03 09:11:42,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:42,339 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-10-03 09:11:42,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-10-03 09:11:42,339 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-10-03 09:11:42,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-03 09:11:42,340 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:42,340 INFO L375 BasicCegarLoop]: trace histogram [104, 103, 1, 1, 1] [2018-10-03 09:11:42,340 INFO L423 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:42,340 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:42,341 INFO L82 PathProgramCache]: Analyzing trace with hash -279118563, now seen corresponding path program 103 times [2018-10-03 09:11:42,341 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:42,341 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:42,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:42,341 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:42,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:42,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:44,241 INFO L134 CoverageAnalysis]: Checked inductivity of 10712 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:44,241 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:44,241 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:11:44,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:11:44,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:44,301 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:44,715 INFO L134 CoverageAnalysis]: Checked inductivity of 10712 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:44,735 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:44,735 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-10-03 09:11:44,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-03 09:11:44,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-03 09:11:44,736 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:44,736 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 106 states. [2018-10-03 09:11:45,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:45,066 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2018-10-03 09:11:45,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-03 09:11:45,068 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 210 [2018-10-03 09:11:45,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:45,068 INFO L225 Difference]: With dead ends: 215 [2018-10-03 09:11:45,068 INFO L226 Difference]: Without dead ends: 213 [2018-10-03 09:11:45,068 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.5s impTime 104 [2018-10-03 09:11:45,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-10-03 09:11:45,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-10-03 09:11:45,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-10-03 09:11:45,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2018-10-03 09:11:45,073 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 210 [2018-10-03 09:11:45,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:45,073 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2018-10-03 09:11:45,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-03 09:11:45,073 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2018-10-03 09:11:45,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-03 09:11:45,074 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:45,074 INFO L375 BasicCegarLoop]: trace histogram [105, 104, 1, 1, 1] [2018-10-03 09:11:45,074 INFO L423 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:45,074 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:45,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1944914601, now seen corresponding path program 104 times [2018-10-03 09:11:45,075 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:45,075 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:45,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:45,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:11:45,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:45,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:47,812 INFO L134 CoverageAnalysis]: Checked inductivity of 10920 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:47,813 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:47,813 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 [2018-10-03 09:11:47,819 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:11:47,869 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:11:47,870 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:47,874 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:48,303 INFO L134 CoverageAnalysis]: Checked inductivity of 10920 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:48,324 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:48,324 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-10-03 09:11:48,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-10-03 09:11:48,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-10-03 09:11:48,325 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:48,325 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand 107 states. [2018-10-03 09:11:48,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:48,793 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-10-03 09:11:48,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-03 09:11:48,793 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 212 [2018-10-03 09:11:48,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:48,794 INFO L225 Difference]: With dead ends: 217 [2018-10-03 09:11:48,794 INFO L226 Difference]: Without dead ends: 215 [2018-10-03 09:11:48,794 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.3s impTime 105 [2018-10-03 09:11:48,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-10-03 09:11:48,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-10-03 09:11:48,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-10-03 09:11:48,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-10-03 09:11:48,798 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 212 [2018-10-03 09:11:48,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:48,798 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-10-03 09:11:48,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-10-03 09:11:48,798 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-10-03 09:11:48,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-03 09:11:48,799 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:48,799 INFO L375 BasicCegarLoop]: trace histogram [106, 105, 1, 1, 1] [2018-10-03 09:11:48,799 INFO L423 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:48,799 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:48,800 INFO L82 PathProgramCache]: Analyzing trace with hash -752105711, now seen corresponding path program 105 times [2018-10-03 09:11:48,800 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:48,800 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:48,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:48,800 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:48,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:51,744 INFO L134 CoverageAnalysis]: Checked inductivity of 11130 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:51,744 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:51,744 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:11:51,752 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:11:51,883 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 106 check-sat command(s) [2018-10-03 09:11:51,883 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:51,888 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:52,278 INFO L134 CoverageAnalysis]: Checked inductivity of 11130 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:52,298 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:52,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-10-03 09:11:52,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-03 09:11:52,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-03 09:11:52,299 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:52,300 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 108 states. [2018-10-03 09:11:52,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:52,805 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-10-03 09:11:52,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-03 09:11:52,806 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 214 [2018-10-03 09:11:52,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:52,806 INFO L225 Difference]: With dead ends: 219 [2018-10-03 09:11:52,806 INFO L226 Difference]: Without dead ends: 217 [2018-10-03 09:11:52,807 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time 2.6s impTime 106 [2018-10-03 09:11:52,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-10-03 09:11:52,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-10-03 09:11:52,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-10-03 09:11:52,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 217 transitions. [2018-10-03 09:11:52,811 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 217 transitions. Word has length 214 [2018-10-03 09:11:52,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:52,811 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 217 transitions. [2018-10-03 09:11:52,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-03 09:11:52,811 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 217 transitions. [2018-10-03 09:11:52,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-03 09:11:52,812 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:52,812 INFO L375 BasicCegarLoop]: trace histogram [107, 106, 1, 1, 1] [2018-10-03 09:11:52,812 INFO L423 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:52,812 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:52,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1219030453, now seen corresponding path program 106 times [2018-10-03 09:11:52,813 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:52,813 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:52,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:52,813 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:52,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:52,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:55,835 INFO L134 CoverageAnalysis]: Checked inductivity of 11342 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:55,835 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:55,835 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:11:55,842 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:11:55,898 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:11:55,898 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:55,901 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:56,297 INFO L134 CoverageAnalysis]: Checked inductivity of 11342 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:56,317 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:56,317 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-10-03 09:11:56,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-10-03 09:11:56,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-10-03 09:11:56,318 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:56,319 INFO L87 Difference]: Start difference. First operand 217 states and 217 transitions. Second operand 109 states. [2018-10-03 09:11:56,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:56,860 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-10-03 09:11:56,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-03 09:11:56,860 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 216 [2018-10-03 09:11:56,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:56,861 INFO L225 Difference]: With dead ends: 221 [2018-10-03 09:11:56,861 INFO L226 Difference]: Without dead ends: 219 [2018-10-03 09:11:56,861 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time 2.6s impTime 107 [2018-10-03 09:11:56,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-10-03 09:11:56,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-10-03 09:11:56,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-10-03 09:11:56,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-10-03 09:11:56,864 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 216 [2018-10-03 09:11:56,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:56,865 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-10-03 09:11:56,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-10-03 09:11:56,865 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-10-03 09:11:56,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-03 09:11:56,865 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:56,865 INFO L375 BasicCegarLoop]: trace histogram [108, 107, 1, 1, 1] [2018-10-03 09:11:56,866 INFO L423 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:56,866 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:56,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1037858565, now seen corresponding path program 107 times [2018-10-03 09:11:56,866 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:56,866 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:56,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:56,866 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:56,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:58,565 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:58,565 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:58,566 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:11:58,573 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:11:58,700 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 108 check-sat command(s) [2018-10-03 09:11:58,700 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:58,704 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:59,099 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:59,120 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:59,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-10-03 09:11:59,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-10-03 09:11:59,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-10-03 09:11:59,121 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:59,121 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 110 states. [2018-10-03 09:11:59,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:59,509 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-10-03 09:11:59,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-10-03 09:11:59,510 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 218 [2018-10-03 09:11:59,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:59,510 INFO L225 Difference]: With dead ends: 223 [2018-10-03 09:11:59,510 INFO L226 Difference]: Without dead ends: 221 [2018-10-03 09:11:59,511 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.3s impTime 108 [2018-10-03 09:11:59,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-10-03 09:11:59,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-10-03 09:11:59,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-10-03 09:11:59,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2018-10-03 09:11:59,514 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 218 [2018-10-03 09:11:59,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:59,515 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2018-10-03 09:11:59,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-10-03 09:11:59,515 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2018-10-03 09:11:59,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-03 09:11:59,516 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:59,516 INFO L375 BasicCegarLoop]: trace histogram [109, 108, 1, 1, 1] [2018-10-03 09:11:59,516 INFO L423 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:59,517 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:59,517 INFO L82 PathProgramCache]: Analyzing trace with hash 949720383, now seen corresponding path program 108 times [2018-10-03 09:11:59,517 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:59,517 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:59,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:59,518 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:59,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:59,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:02,172 INFO L134 CoverageAnalysis]: Checked inductivity of 11772 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:02,172 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:12:02,172 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 [2018-10-03 09:12:02,179 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:12:02,309 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 109 check-sat command(s) [2018-10-03 09:12:02,309 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:12:02,313 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:12:02,729 INFO L134 CoverageAnalysis]: Checked inductivity of 11772 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:02,749 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:12:02,750 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2018-10-03 09:12:02,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-10-03 09:12:02,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-10-03 09:12:02,751 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:12:02,751 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 111 states. [2018-10-03 09:12:03,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:12:03,267 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-10-03 09:12:03,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-10-03 09:12:03,268 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 220 [2018-10-03 09:12:03,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:12:03,268 INFO L225 Difference]: With dead ends: 225 [2018-10-03 09:12:03,268 INFO L226 Difference]: Without dead ends: 223 [2018-10-03 09:12:03,269 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.2s impTime 109 [2018-10-03 09:12:03,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-03 09:12:03,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-10-03 09:12:03,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-10-03 09:12:03,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-10-03 09:12:03,272 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 220 [2018-10-03 09:12:03,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:12:03,272 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-10-03 09:12:03,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-10-03 09:12:03,272 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-10-03 09:12:03,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-03 09:12:03,273 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:12:03,273 INFO L375 BasicCegarLoop]: trace histogram [110, 109, 1, 1, 1] [2018-10-03 09:12:03,273 INFO L423 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:12:03,273 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:12:03,273 INFO L82 PathProgramCache]: Analyzing trace with hash -2146693895, now seen corresponding path program 109 times [2018-10-03 09:12:03,273 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:12:03,273 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:12:03,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:03,274 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:12:03,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:03,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:05,847 INFO L134 CoverageAnalysis]: Checked inductivity of 11990 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:05,847 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:12:05,847 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:12:05,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:12:05,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:05,908 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:12:06,291 INFO L134 CoverageAnalysis]: Checked inductivity of 11990 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:06,310 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:12:06,311 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2018-10-03 09:12:06,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-10-03 09:12:06,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-10-03 09:12:06,312 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:12:06,312 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 112 states. [2018-10-03 09:12:06,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:12:06,776 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2018-10-03 09:12:06,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-10-03 09:12:06,777 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 222 [2018-10-03 09:12:06,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:12:06,777 INFO L225 Difference]: With dead ends: 227 [2018-10-03 09:12:06,777 INFO L226 Difference]: Without dead ends: 225 [2018-10-03 09:12:06,778 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.2s impTime 110 [2018-10-03 09:12:06,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-10-03 09:12:06,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-10-03 09:12:06,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-10-03 09:12:06,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-10-03 09:12:06,781 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 222 [2018-10-03 09:12:06,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:12:06,781 INFO L480 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-10-03 09:12:06,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-10-03 09:12:06,782 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-10-03 09:12:06,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-03 09:12:06,782 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:12:06,782 INFO L375 BasicCegarLoop]: trace histogram [111, 110, 1, 1, 1] [2018-10-03 09:12:06,782 INFO L423 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:12:06,782 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:12:06,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1388478925, now seen corresponding path program 110 times [2018-10-03 09:12:06,783 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:12:06,783 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:12:06,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:06,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:12:06,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:09,892 INFO L134 CoverageAnalysis]: Checked inductivity of 12210 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:09,892 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:12:09,892 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:12:09,901 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:12:09,955 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:12:09,956 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:12:09,959 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:12:10,445 INFO L134 CoverageAnalysis]: Checked inductivity of 12210 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:10,467 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:12:10,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 112 [2018-10-03 09:12:10,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-10-03 09:12:10,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-10-03 09:12:10,469 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:12:10,469 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 113 states. [2018-10-03 09:12:10,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:12:10,981 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-10-03 09:12:10,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-10-03 09:12:10,981 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 224 [2018-10-03 09:12:10,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:12:10,981 INFO L225 Difference]: With dead ends: 229 [2018-10-03 09:12:10,981 INFO L226 Difference]: Without dead ends: 227 [2018-10-03 09:12:10,982 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s Time 2.7s impTime 111 [2018-10-03 09:12:10,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-10-03 09:12:10,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-10-03 09:12:10,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-10-03 09:12:10,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-10-03 09:12:10,984 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 224 [2018-10-03 09:12:10,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:12:10,985 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-10-03 09:12:10,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-10-03 09:12:10,985 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-10-03 09:12:10,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-03 09:12:10,986 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:12:10,986 INFO L375 BasicCegarLoop]: trace histogram [112, 111, 1, 1, 1] [2018-10-03 09:12:10,986 INFO L423 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:12:10,986 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:12:10,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1406634221, now seen corresponding path program 111 times [2018-10-03 09:12:10,986 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:12:10,986 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:12:10,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:10,987 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:12:10,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:13,181 INFO L134 CoverageAnalysis]: Checked inductivity of 12432 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:13,181 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:12:13,181 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:12:13,188 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:12:13,331 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 112 check-sat command(s) [2018-10-03 09:12:13,331 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:12:13,334 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:12:13,720 INFO L134 CoverageAnalysis]: Checked inductivity of 12432 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:13,741 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:12:13,742 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2018-10-03 09:12:13,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-10-03 09:12:13,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-10-03 09:12:13,743 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:12:13,743 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand 114 states. [2018-10-03 09:12:14,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:12:14,222 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2018-10-03 09:12:14,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-10-03 09:12:14,222 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 226 [2018-10-03 09:12:14,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:12:14,223 INFO L225 Difference]: With dead ends: 231 [2018-10-03 09:12:14,223 INFO L226 Difference]: Without dead ends: 229 [2018-10-03 09:12:14,223 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.8s impTime 112 [2018-10-03 09:12:14,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-10-03 09:12:14,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-10-03 09:12:14,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-10-03 09:12:14,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 229 transitions. [2018-10-03 09:12:14,226 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 229 transitions. Word has length 226 [2018-10-03 09:12:14,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:12:14,226 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 229 transitions. [2018-10-03 09:12:14,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-10-03 09:12:14,226 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 229 transitions. [2018-10-03 09:12:14,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-03 09:12:14,227 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:12:14,227 INFO L375 BasicCegarLoop]: trace histogram [113, 112, 1, 1, 1] [2018-10-03 09:12:14,227 INFO L423 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:12:14,227 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:12:14,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1139159769, now seen corresponding path program 112 times [2018-10-03 09:12:14,227 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:12:14,227 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:12:14,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:14,228 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:12:14,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:14,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:16,623 INFO L134 CoverageAnalysis]: Checked inductivity of 12656 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:16,624 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:12:16,624 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 [2018-10-03 09:12:16,631 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:12:16,682 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:12:16,682 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:12:16,685 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:12:17,107 INFO L134 CoverageAnalysis]: Checked inductivity of 12656 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:17,127 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:12:17,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 114 [2018-10-03 09:12:17,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-10-03 09:12:17,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-10-03 09:12:17,129 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:12:17,129 INFO L87 Difference]: Start difference. First operand 229 states and 229 transitions. Second operand 115 states. [2018-10-03 09:12:17,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:12:17,600 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-10-03 09:12:17,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-10-03 09:12:17,600 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 228 [2018-10-03 09:12:17,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:12:17,601 INFO L225 Difference]: With dead ends: 233 [2018-10-03 09:12:17,601 INFO L226 Difference]: Without dead ends: 231 [2018-10-03 09:12:17,601 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.0s impTime 113 [2018-10-03 09:12:17,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-10-03 09:12:17,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-10-03 09:12:17,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-10-03 09:12:17,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2018-10-03 09:12:17,604 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 228 [2018-10-03 09:12:17,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:12:17,604 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2018-10-03 09:12:17,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-10-03 09:12:17,604 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2018-10-03 09:12:17,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-10-03 09:12:17,605 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:12:17,605 INFO L375 BasicCegarLoop]: trace histogram [114, 113, 1, 1, 1] [2018-10-03 09:12:17,605 INFO L423 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:12:17,605 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:12:17,605 INFO L82 PathProgramCache]: Analyzing trace with hash 484174561, now seen corresponding path program 113 times [2018-10-03 09:12:17,605 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:12:17,605 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:12:17,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:17,606 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:12:17,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:20,073 INFO L134 CoverageAnalysis]: Checked inductivity of 12882 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:20,073 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:12:20,073 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 [2018-10-03 09:12:20,080 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:12:20,280 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 114 check-sat command(s) [2018-10-03 09:12:20,280 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:12:20,284 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:12:20,995 INFO L134 CoverageAnalysis]: Checked inductivity of 12882 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:21,015 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:12:21,015 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 115 [2018-10-03 09:12:21,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-10-03 09:12:21,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-10-03 09:12:21,017 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:12:21,017 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand 116 states. [2018-10-03 09:12:21,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:12:21,537 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-10-03 09:12:21,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-10-03 09:12:21,537 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 230 [2018-10-03 09:12:21,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:12:21,538 INFO L225 Difference]: With dead ends: 235 [2018-10-03 09:12:21,538 INFO L226 Difference]: Without dead ends: 233 [2018-10-03 09:12:21,538 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.1s impTime 114 [2018-10-03 09:12:21,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-10-03 09:12:21,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-10-03 09:12:21,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-10-03 09:12:21,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 233 transitions. [2018-10-03 09:12:21,541 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 233 transitions. Word has length 230 [2018-10-03 09:12:21,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:12:21,541 INFO L480 AbstractCegarLoop]: Abstraction has 233 states and 233 transitions. [2018-10-03 09:12:21,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-10-03 09:12:21,541 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 233 transitions. [2018-10-03 09:12:21,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-10-03 09:12:21,542 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:12:21,542 INFO L375 BasicCegarLoop]: trace histogram [115, 114, 1, 1, 1] [2018-10-03 09:12:21,542 INFO L423 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:12:21,542 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:12:21,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1435337243, now seen corresponding path program 114 times [2018-10-03 09:12:21,542 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:12:21,542 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:12:21,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:21,543 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:12:21,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:24,869 INFO L134 CoverageAnalysis]: Checked inductivity of 13110 backedges. 0 proven. 13110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:24,870 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:12:24,870 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:12:24,876 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:12:25,020 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 115 check-sat command(s) [2018-10-03 09:12:25,021 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:12:25,024 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:12:25,444 INFO L134 CoverageAnalysis]: Checked inductivity of 13110 backedges. 0 proven. 13110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:25,464 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:12:25,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116] total 116 [2018-10-03 09:12:25,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-10-03 09:12:25,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-10-03 09:12:25,466 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:12:25,466 INFO L87 Difference]: Start difference. First operand 233 states and 233 transitions. Second operand 117 states. [2018-10-03 09:12:26,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:12:26,089 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-10-03 09:12:26,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-10-03 09:12:26,090 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 232 [2018-10-03 09:12:26,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:12:26,090 INFO L225 Difference]: With dead ends: 237 [2018-10-03 09:12:26,090 INFO L226 Difference]: Without dead ends: 235 [2018-10-03 09:12:26,091 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time 2.9s impTime 115 [2018-10-03 09:12:26,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-10-03 09:12:26,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-10-03 09:12:26,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-10-03 09:12:26,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions. [2018-10-03 09:12:26,094 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 232 [2018-10-03 09:12:26,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:12:26,094 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions. [2018-10-03 09:12:26,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-10-03 09:12:26,095 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions. [2018-10-03 09:12:26,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-10-03 09:12:26,095 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:12:26,095 INFO L375 BasicCegarLoop]: trace histogram [116, 115, 1, 1, 1] [2018-10-03 09:12:26,095 INFO L423 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:12:26,096 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:12:26,096 INFO L82 PathProgramCache]: Analyzing trace with hash 674640597, now seen corresponding path program 115 times [2018-10-03 09:12:26,096 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:12:26,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:12:26,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:26,096 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:12:26,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:28,592 INFO L134 CoverageAnalysis]: Checked inductivity of 13340 backedges. 0 proven. 13340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:28,593 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:12:28,593 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 [2018-10-03 09:12:28,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:12:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:28,661 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:12:29,168 INFO L134 CoverageAnalysis]: Checked inductivity of 13340 backedges. 0 proven. 13340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:29,189 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:12:29,189 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117] total 117 [2018-10-03 09:12:29,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-10-03 09:12:29,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-10-03 09:12:29,190 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:12:29,190 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand 118 states. [2018-10-03 09:12:29,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:12:29,750 INFO L93 Difference]: Finished difference Result 239 states and 239 transitions. [2018-10-03 09:12:29,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-10-03 09:12:29,751 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 234 [2018-10-03 09:12:29,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:12:29,751 INFO L225 Difference]: With dead ends: 239 [2018-10-03 09:12:29,751 INFO L226 Difference]: Without dead ends: 237 [2018-10-03 09:12:29,752 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.1s impTime 116 [2018-10-03 09:12:29,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-10-03 09:12:29,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-10-03 09:12:29,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-10-03 09:12:29,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 237 transitions. [2018-10-03 09:12:29,755 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 237 transitions. Word has length 234 [2018-10-03 09:12:29,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:12:29,755 INFO L480 AbstractCegarLoop]: Abstraction has 237 states and 237 transitions. [2018-10-03 09:12:29,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-10-03 09:12:29,756 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 237 transitions. [2018-10-03 09:12:29,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-10-03 09:12:29,756 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:12:29,756 INFO L375 BasicCegarLoop]: trace histogram [117, 116, 1, 1, 1] [2018-10-03 09:12:29,757 INFO L423 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:12:29,757 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:12:29,757 INFO L82 PathProgramCache]: Analyzing trace with hash -210395889, now seen corresponding path program 116 times [2018-10-03 09:12:29,757 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:12:29,757 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:12:29,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:29,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:12:29,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:33,234 INFO L134 CoverageAnalysis]: Checked inductivity of 13572 backedges. 0 proven. 13572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:33,234 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:12:33,234 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:12:33,242 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:12:33,300 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:12:33,300 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:12:33,303 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:12:33,852 INFO L134 CoverageAnalysis]: Checked inductivity of 13572 backedges. 0 proven. 13572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:33,872 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:12:33,872 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118] total 118 [2018-10-03 09:12:33,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-10-03 09:12:33,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-10-03 09:12:33,874 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:12:33,874 INFO L87 Difference]: Start difference. First operand 237 states and 237 transitions. Second operand 119 states. [2018-10-03 09:12:34,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:12:34,547 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-10-03 09:12:34,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-10-03 09:12:34,547 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 236 [2018-10-03 09:12:34,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:12:34,548 INFO L225 Difference]: With dead ends: 241 [2018-10-03 09:12:34,548 INFO L226 Difference]: Without dead ends: 239 [2018-10-03 09:12:34,548 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s Time 3.1s impTime 117 [2018-10-03 09:12:34,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-10-03 09:12:34,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-10-03 09:12:34,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-10-03 09:12:34,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2018-10-03 09:12:34,551 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 236 [2018-10-03 09:12:34,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:12:34,552 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2018-10-03 09:12:34,552 INFO L481 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-10-03 09:12:34,552 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2018-10-03 09:12:34,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-03 09:12:34,553 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:12:34,553 INFO L375 BasicCegarLoop]: trace histogram [118, 117, 1, 1, 1] [2018-10-03 09:12:34,553 INFO L423 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:12:34,553 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:12:34,553 INFO L82 PathProgramCache]: Analyzing trace with hash -326934327, now seen corresponding path program 117 times [2018-10-03 09:12:34,553 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:12:34,553 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:12:34,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:34,554 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:12:34,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:36,752 INFO L134 CoverageAnalysis]: Checked inductivity of 13806 backedges. 0 proven. 13806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:36,752 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:12:36,752 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:12:36,759 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:12:36,940 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 118 check-sat command(s) [2018-10-03 09:12:36,940 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:12:36,944 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:12:37,382 INFO L134 CoverageAnalysis]: Checked inductivity of 13806 backedges. 0 proven. 13806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:37,404 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:12:37,405 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119] total 119 [2018-10-03 09:12:37,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-10-03 09:12:37,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-10-03 09:12:37,406 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:12:37,406 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 120 states. [2018-10-03 09:12:37,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:12:37,831 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2018-10-03 09:12:37,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-10-03 09:12:37,832 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 238 [2018-10-03 09:12:37,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:12:37,832 INFO L225 Difference]: With dead ends: 243 [2018-10-03 09:12:37,832 INFO L226 Difference]: Without dead ends: 241 [2018-10-03 09:12:37,833 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 1.8s impTime 118 [2018-10-03 09:12:37,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-10-03 09:12:37,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-10-03 09:12:37,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-10-03 09:12:37,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 241 transitions. [2018-10-03 09:12:37,836 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 241 transitions. Word has length 238 [2018-10-03 09:12:37,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:12:37,837 INFO L480 AbstractCegarLoop]: Abstraction has 241 states and 241 transitions. [2018-10-03 09:12:37,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-10-03 09:12:37,837 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 241 transitions. [2018-10-03 09:12:37,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-10-03 09:12:37,837 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:12:37,837 INFO L375 BasicCegarLoop]: trace histogram [119, 118, 1, 1, 1] [2018-10-03 09:12:37,838 INFO L423 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:12:37,838 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:12:37,838 INFO L82 PathProgramCache]: Analyzing trace with hash -651223549, now seen corresponding path program 118 times [2018-10-03 09:12:37,838 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:12:37,838 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:12:37,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:37,838 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:12:37,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:37,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-03 09:12:40,626 INFO L134 CoverageAnalysis]: Checked inductivity of 14042 backedges. 0 proven. 14042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:40,627 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:12:40,627 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 [2018-10-03 09:12:40,633 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:12:40,688 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:12:40,688 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:12:40,691 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:12:40,701 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-03 09:12:40,902 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:12:40,903 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-03 09:12:40,908 WARN L205 ceAbstractionStarter]: Timeout [2018-10-03 09:12:40,908 INFO L202 PluginConnector]: Adding new model count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 09:12:40 BoogieIcfgContainer [2018-10-03 09:12:40,908 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-03 09:12:40,909 INFO L168 Benchmark]: Toolchain (without parser) took 237107.41 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 524.3 kB). Free memory was 1.4 GB in the beginning and 852.8 MB in the end (delta: 570.9 MB). Peak memory consumption was 571.4 MB. Max. memory is 7.1 GB. [2018-10-03 09:12:40,911 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-03 09:12:40,911 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.73 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-03 09:12:40,912 INFO L168 Benchmark]: Boogie Preprocessor took 23.88 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-03 09:12:40,913 INFO L168 Benchmark]: RCFGBuilder took 266.77 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-03 09:12:40,913 INFO L168 Benchmark]: TraceAbstraction took 236766.74 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 524.3 kB). Free memory was 1.4 GB in the beginning and 852.8 MB in the end (delta: 549.7 MB). Peak memory consumption was 550.3 MB. Max. memory is 7.1 GB. [2018-10-03 09:12:40,916 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 43.73 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.88 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 266.77 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 236766.74 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 524.3 kB). Free memory was 1.4 GB in the beginning and 852.8 MB in the end (delta: 549.7 MB). Peak memory consumption was 550.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 31]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 31). Cancelled while BasicCegarLoop was analyzing trace of length 241 with TraceHistMax 119, 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, 7 locations, 1 error locations. TIMEOUT Result, 236.6s OverallTime, 119 OverallIterations, 119 TraceHistogramMax, 25.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 472 SDtfs, 0 SDslu, 10701 SDs, 0 SdLazy, 10819 SolverSat, 221 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21296 GetRequests, 14275 SyntacticMatches, 0 SemanticMatches, 7021 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 184.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=241occurred in iteration=118, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 118 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 8.0s SatisfiabilityAnalysisTime, 192.6s InterpolantComputationTime, 28552 NumberOfCodeBlocks, 28552 NumberOfCodeBlocksAsserted, 3735 NumberOfCheckSat, 28317 ConstructedInterpolants, 0 QuantifiedInterpolants, 13424367 SizeOfPredicates, 117 NumberOfNonLiveVariables, 29133 ConjunctsInSsa, 7137 ConjunctsInUnsatCore, 235 InterpolantComputations, 1 PerfectInterpolantSequences, 0/1095276 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/count_by_2.i_3.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-03_09-12-40-926.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/count_by_2.i_3.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-03_09-12-40-926.csv Completed graceful shutdown