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.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/array3.i_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cc990c [2018-09-30 23:21:09,004 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-30 23:21:09,006 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-30 23:21:09,018 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-30 23:21:09,018 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-30 23:21:09,019 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-30 23:21:09,020 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-30 23:21:09,022 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-30 23:21:09,024 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-30 23:21:09,025 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-30 23:21:09,026 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-30 23:21:09,026 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-30 23:21:09,027 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-30 23:21:09,028 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-30 23:21:09,029 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-30 23:21:09,030 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-30 23:21:09,030 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-30 23:21:09,032 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-30 23:21:09,035 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-30 23:21:09,036 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-30 23:21:09,037 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-30 23:21:09,039 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-30 23:21:09,041 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-30 23:21:09,050 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-30 23:21:09,072 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-30 23:21:09,072 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-30 23:21:09,073 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-30 23:21:09,074 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-30 23:21:09,074 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-30 23:21:09,074 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-30 23:21:09,075 INFO L133 SettingsManager]: * Use SBE=true [2018-09-30 23:21:09,075 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-30 23:21:09,075 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-30 23:21:09,075 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-30 23:21:09,075 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-30 23:21:09,075 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-30 23:21:09,076 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-30 23:21:09,076 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-30 23:21:09,076 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-30 23:21:09,076 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-30 23:21:09,076 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-30 23:21:09,077 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-30 23:21:09,077 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-30 23:21:09,077 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-30 23:21:09,077 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-30 23:21:09,077 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-30 23:21:09,078 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 23:21:09,078 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-30 23:21:09,078 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-30 23:21:09,078 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-30 23:21:09,078 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-30 23:21:09,078 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-30 23:21:09,079 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-30 23:21:09,079 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-30 23:21:09,140 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-30 23:21:09,159 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-30 23:21:09,165 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-30 23:21:09,167 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-30 23:21:09,167 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-30 23:21:09,168 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/array3.i_4.bpl [2018-09-30 23:21:09,168 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/array3.i_4.bpl' [2018-09-30 23:21:09,245 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-30 23:21:09,250 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-30 23:21:09,251 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-30 23:21:09,251 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-30 23:21:09,253 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-30 23:21:09,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 11:21:09" (1/1) ... [2018-09-30 23:21:09,287 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 11:21:09" (1/1) ... [2018-09-30 23:21:09,296 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-30 23:21:09,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-30 23:21:09,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-30 23:21:09,297 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-30 23:21:09,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 11:21:09" (1/1) ... [2018-09-30 23:21:09,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 11:21:09" (1/1) ... [2018-09-30 23:21:09,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 11:21:09" (1/1) ... [2018-09-30 23:21:09,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 11:21:09" (1/1) ... [2018-09-30 23:21:09,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 11:21:09" (1/1) ... [2018-09-30 23:21:09,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 11:21:09" (1/1) ... [2018-09-30 23:21:09,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 11:21:09" (1/1) ... [2018-09-30 23:21:09,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-30 23:21:09,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-30 23:21:09,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-30 23:21:09,317 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-30 23:21:09,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 11:21:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 23:21:09,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-30 23:21:09,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-30 23:21:09,703 INFO L348 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-30 23:21:09,703 INFO L202 PluginConnector]: Adding new model array3.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 11:21:09 BoogieIcfgContainer [2018-09-30 23:21:09,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-30 23:21:09,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-30 23:21:09,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-30 23:21:09,708 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-30 23:21:09,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 11:21:09" (1/2) ... [2018-09-30 23:21:09,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d037c7 and model type array3.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.09 11:21:09, skipping insertion in model container [2018-09-30 23:21:09,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 11:21:09" (2/2) ... [2018-09-30 23:21:09,712 INFO L112 eAbstractionObserver]: Analyzing ICFG array3.i_4.bpl [2018-09-30 23:21:09,722 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-30 23:21:09,730 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-30 23:21:09,779 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-30 23:21:09,779 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-30 23:21:09,780 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-30 23:21:09,780 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-30 23:21:09,780 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-30 23:21:09,780 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-30 23:21:09,780 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-30 23:21:09,781 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-30 23:21:09,781 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-30 23:21:09,795 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2018-09-30 23:21:09,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-30 23:21:09,801 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:09,803 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-09-30 23:21:09,805 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:09,811 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:09,811 INFO L82 PathProgramCache]: Analyzing trace with hash 889539531, now seen corresponding path program 1 times [2018-09-30 23:21:09,813 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:09,814 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:09,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:09,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:21:09,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:09,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:09,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:21:09,972 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 23:21:09,972 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-30 23:21:09,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-30 23:21:09,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-30 23:21:09,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-30 23:21:09,990 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2018-09-30 23:21:10,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:10,095 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2018-09-30 23:21:10,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-30 23:21:10,097 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2018-09-30 23:21:10,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:10,111 INFO L225 Difference]: With dead ends: 17 [2018-09-30 23:21:10,111 INFO L226 Difference]: Without dead ends: 11 [2018-09-30 23:21:10,116 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-30 23:21:10,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-09-30 23:21:10,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-09-30 23:21:10,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-09-30 23:21:10,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-09-30 23:21:10,182 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 6 [2018-09-30 23:21:10,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:10,182 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-09-30 23:21:10,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-30 23:21:10,183 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-09-30 23:21:10,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-30 23:21:10,183 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:10,184 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-09-30 23:21:10,184 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:10,184 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:10,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1897191999, now seen corresponding path program 1 times [2018-09-30 23:21:10,185 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:10,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:10,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:10,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:21:10,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:10,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:10,240 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-09-30 23:21:10,240 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:10,240 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:10,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:21:10,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:10,304 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:10,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-09-30 23:21:10,353 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:10,354 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-09-30 23:21:10,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-30 23:21:10,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-30 23:21:10,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-30 23:21:10,356 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 4 states. [2018-09-30 23:21:10,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:10,465 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2018-09-30 23:21:10,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-30 23:21:10,465 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-09-30 23:21:10,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:10,466 INFO L225 Difference]: With dead ends: 21 [2018-09-30 23:21:10,466 INFO L226 Difference]: Without dead ends: 15 [2018-09-30 23:21:10,467 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-30 23:21:10,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-09-30 23:21:10,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-09-30 23:21:10,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-09-30 23:21:10,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-09-30 23:21:10,472 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2018-09-30 23:21:10,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:10,473 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-09-30 23:21:10,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-30 23:21:10,473 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2018-09-30 23:21:10,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-30 23:21:10,473 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:10,474 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1] [2018-09-30 23:21:10,474 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:10,474 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:10,474 INFO L82 PathProgramCache]: Analyzing trace with hash 87273139, now seen corresponding path program 2 times [2018-09-30 23:21:10,475 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:10,475 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:10,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:10,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:21:10,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:10,609 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-30 23:21:10,610 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:10,610 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:10,620 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 23:21:10,668 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 23:21:10,668 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:21:10,670 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:10,676 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-30 23:21:10,698 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:10,699 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-09-30 23:21:10,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-30 23:21:10,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-30 23:21:10,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-09-30 23:21:10,700 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2018-09-30 23:21:10,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:10,780 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2018-09-30 23:21:10,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-30 23:21:10,781 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-09-30 23:21:10,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:10,782 INFO L225 Difference]: With dead ends: 27 [2018-09-30 23:21:10,782 INFO L226 Difference]: Without dead ends: 19 [2018-09-30 23:21:10,782 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-09-30 23:21:10,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-09-30 23:21:10,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-09-30 23:21:10,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-30 23:21:10,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-09-30 23:21:10,789 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2018-09-30 23:21:10,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:10,790 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-09-30 23:21:10,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-30 23:21:10,790 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-09-30 23:21:10,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-30 23:21:10,791 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:10,791 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1] [2018-09-30 23:21:10,791 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:10,792 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:10,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1310275289, now seen corresponding path program 3 times [2018-09-30 23:21:10,792 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:10,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:10,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:10,794 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:21:10,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:10,985 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-30 23:21:10,986 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:10,986 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:11,003 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 23:21:11,064 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-09-30 23:21:11,065 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:21:11,067 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:11,074 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-30 23:21:11,106 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:11,106 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-09-30 23:21:11,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-30 23:21:11,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-30 23:21:11,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-09-30 23:21:11,108 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 6 states. [2018-09-30 23:21:11,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:11,269 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2018-09-30 23:21:11,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-30 23:21:11,270 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-09-30 23:21:11,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:11,271 INFO L225 Difference]: With dead ends: 33 [2018-09-30 23:21:11,271 INFO L226 Difference]: Without dead ends: 23 [2018-09-30 23:21:11,272 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-09-30 23:21:11,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-09-30 23:21:11,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-09-30 23:21:11,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-09-30 23:21:11,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-09-30 23:21:11,278 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 18 [2018-09-30 23:21:11,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:11,279 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-09-30 23:21:11,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-30 23:21:11,280 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-09-30 23:21:11,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-30 23:21:11,281 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:11,281 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1] [2018-09-30 23:21:11,281 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:11,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:11,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1731406235, now seen corresponding path program 4 times [2018-09-30 23:21:11,282 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:11,282 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:11,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:11,283 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:21:11,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:11,410 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-09-30 23:21:11,410 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:11,410 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:11,425 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 23:21:11,465 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 23:21:11,466 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:21:11,468 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:11,476 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-09-30 23:21:11,496 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:11,496 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-09-30 23:21:11,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-30 23:21:11,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-30 23:21:11,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-09-30 23:21:11,498 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2018-09-30 23:21:11,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:11,553 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2018-09-30 23:21:11,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-30 23:21:11,554 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2018-09-30 23:21:11,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:11,555 INFO L225 Difference]: With dead ends: 39 [2018-09-30 23:21:11,555 INFO L226 Difference]: Without dead ends: 27 [2018-09-30 23:21:11,555 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-09-30 23:21:11,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-09-30 23:21:11,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-09-30 23:21:11,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-09-30 23:21:11,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-09-30 23:21:11,561 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 22 [2018-09-30 23:21:11,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:11,562 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-09-30 23:21:11,562 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-30 23:21:11,562 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-09-30 23:21:11,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-30 23:21:11,563 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:11,563 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1] [2018-09-30 23:21:11,564 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:11,564 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:11,564 INFO L82 PathProgramCache]: Analyzing trace with hash 77451279, now seen corresponding path program 5 times [2018-09-30 23:21:11,564 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:11,564 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:11,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:11,566 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:21:11,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:11,756 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-09-30 23:21:11,756 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:11,757 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:11,765 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 23:21:11,795 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-09-30 23:21:11,795 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:21:11,797 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:11,806 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-09-30 23:21:11,834 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:11,835 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-09-30 23:21:11,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-30 23:21:11,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-30 23:21:11,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-09-30 23:21:11,836 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 8 states. [2018-09-30 23:21:11,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:11,917 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2018-09-30 23:21:11,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-30 23:21:11,918 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2018-09-30 23:21:11,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:11,918 INFO L225 Difference]: With dead ends: 45 [2018-09-30 23:21:11,919 INFO L226 Difference]: Without dead ends: 31 [2018-09-30 23:21:11,919 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-09-30 23:21:11,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-09-30 23:21:11,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-09-30 23:21:11,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-09-30 23:21:11,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-09-30 23:21:11,925 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 26 [2018-09-30 23:21:11,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:11,926 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-09-30 23:21:11,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-30 23:21:11,926 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-09-30 23:21:11,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-30 23:21:11,928 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:11,929 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1] [2018-09-30 23:21:11,929 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:11,929 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:11,929 INFO L82 PathProgramCache]: Analyzing trace with hash 422296707, now seen corresponding path program 6 times [2018-09-30 23:21:11,930 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:11,930 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:11,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:11,931 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:21:11,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:12,054 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-09-30 23:21:12,055 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:12,055 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:12,077 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 23:21:12,193 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-09-30 23:21:12,194 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:21:12,198 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:12,218 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-09-30 23:21:12,255 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:12,259 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-09-30 23:21:12,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-30 23:21:12,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-30 23:21:12,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-09-30 23:21:12,261 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 9 states. [2018-09-30 23:21:12,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:12,470 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2018-09-30 23:21:12,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-30 23:21:12,472 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2018-09-30 23:21:12,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:12,473 INFO L225 Difference]: With dead ends: 51 [2018-09-30 23:21:12,474 INFO L226 Difference]: Without dead ends: 35 [2018-09-30 23:21:12,474 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-09-30 23:21:12,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-09-30 23:21:12,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-09-30 23:21:12,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-09-30 23:21:12,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-09-30 23:21:12,480 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 30 [2018-09-30 23:21:12,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:12,480 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-09-30 23:21:12,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-30 23:21:12,480 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-09-30 23:21:12,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-30 23:21:12,481 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:12,482 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1] [2018-09-30 23:21:12,482 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:12,482 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:12,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1553862921, now seen corresponding path program 7 times [2018-09-30 23:21:12,483 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:12,483 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:12,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:12,484 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:21:12,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:12,636 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-09-30 23:21:12,637 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:12,637 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:12,652 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:21:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:12,677 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:12,687 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-09-30 23:21:12,708 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:12,708 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-09-30 23:21:12,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-30 23:21:12,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-30 23:21:12,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-09-30 23:21:12,710 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 10 states. [2018-09-30 23:21:12,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:12,815 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2018-09-30 23:21:12,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-30 23:21:12,821 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2018-09-30 23:21:12,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:12,822 INFO L225 Difference]: With dead ends: 57 [2018-09-30 23:21:12,822 INFO L226 Difference]: Without dead ends: 39 [2018-09-30 23:21:12,823 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-09-30 23:21:12,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-09-30 23:21:12,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-09-30 23:21:12,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-09-30 23:21:12,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2018-09-30 23:21:12,832 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 34 [2018-09-30 23:21:12,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:12,834 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2018-09-30 23:21:12,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-30 23:21:12,834 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2018-09-30 23:21:12,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-30 23:21:12,835 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:12,837 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1] [2018-09-30 23:21:12,837 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:12,837 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:12,837 INFO L82 PathProgramCache]: Analyzing trace with hash -783980693, now seen corresponding path program 8 times [2018-09-30 23:21:12,838 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:12,838 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:12,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:12,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:21:12,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:12,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:13,430 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-30 23:21:13,430 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:13,431 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:13,438 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 23:21:13,464 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 23:21:13,465 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:21:13,467 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:13,478 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-30 23:21:13,500 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:13,501 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-09-30 23:21:13,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-30 23:21:13,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-30 23:21:13,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-09-30 23:21:13,502 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 11 states. [2018-09-30 23:21:13,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:13,591 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2018-09-30 23:21:13,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-30 23:21:13,591 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2018-09-30 23:21:13,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:13,592 INFO L225 Difference]: With dead ends: 63 [2018-09-30 23:21:13,592 INFO L226 Difference]: Without dead ends: 43 [2018-09-30 23:21:13,593 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-09-30 23:21:13,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-09-30 23:21:13,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-09-30 23:21:13,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-09-30 23:21:13,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2018-09-30 23:21:13,600 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 38 [2018-09-30 23:21:13,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:13,601 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2018-09-30 23:21:13,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-30 23:21:13,601 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2018-09-30 23:21:13,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-09-30 23:21:13,602 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:13,602 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1] [2018-09-30 23:21:13,602 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:13,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:13,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1067768353, now seen corresponding path program 9 times [2018-09-30 23:21:13,603 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:13,603 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:13,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:13,604 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:21:13,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:13,852 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-09-30 23:21:13,852 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:13,852 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:13,864 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 23:21:13,919 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-09-30 23:21:13,920 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:21:13,922 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:13,933 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-09-30 23:21:13,960 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:13,960 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-09-30 23:21:13,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-30 23:21:13,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-30 23:21:13,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-09-30 23:21:13,961 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 12 states. [2018-09-30 23:21:14,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:14,077 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2018-09-30 23:21:14,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-30 23:21:14,078 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2018-09-30 23:21:14,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:14,079 INFO L225 Difference]: With dead ends: 69 [2018-09-30 23:21:14,079 INFO L226 Difference]: Without dead ends: 47 [2018-09-30 23:21:14,079 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-09-30 23:21:14,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-30 23:21:14,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-09-30 23:21:14,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-09-30 23:21:14,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2018-09-30 23:21:14,085 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 42 [2018-09-30 23:21:14,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:14,086 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2018-09-30 23:21:14,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-30 23:21:14,086 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2018-09-30 23:21:14,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-09-30 23:21:14,087 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:14,087 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1] [2018-09-30 23:21:14,088 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:14,088 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:14,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1034431059, now seen corresponding path program 10 times [2018-09-30 23:21:14,088 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:14,088 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:14,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:14,089 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:21:14,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:14,294 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2018-09-30 23:21:14,295 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:14,295 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:14,303 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 23:21:14,354 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 23:21:14,355 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:21:14,361 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:14,385 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2018-09-30 23:21:14,425 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:14,425 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-09-30 23:21:14,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-30 23:21:14,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-30 23:21:14,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-09-30 23:21:14,428 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 13 states. [2018-09-30 23:21:14,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:14,654 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions. [2018-09-30 23:21:14,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-30 23:21:14,654 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2018-09-30 23:21:14,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:14,656 INFO L225 Difference]: With dead ends: 75 [2018-09-30 23:21:14,656 INFO L226 Difference]: Without dead ends: 51 [2018-09-30 23:21:14,657 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-09-30 23:21:14,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-30 23:21:14,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-30 23:21:14,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-30 23:21:14,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2018-09-30 23:21:14,665 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 46 [2018-09-30 23:21:14,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:14,666 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2018-09-30 23:21:14,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-30 23:21:14,666 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2018-09-30 23:21:14,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-30 23:21:14,666 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:14,667 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1] [2018-09-30 23:21:14,667 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:14,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:14,667 INFO L82 PathProgramCache]: Analyzing trace with hash -2051967801, now seen corresponding path program 11 times [2018-09-30 23:21:14,667 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:14,668 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:14,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:14,669 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:21:14,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:14,858 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-09-30 23:21:14,858 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:14,859 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:14,872 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 23:21:14,920 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-09-30 23:21:14,920 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:21:14,922 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:14,937 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-09-30 23:21:14,960 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:14,960 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-09-30 23:21:14,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-30 23:21:14,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-30 23:21:14,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-09-30 23:21:14,962 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 14 states. [2018-09-30 23:21:15,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:15,060 INFO L93 Difference]: Finished difference Result 81 states and 84 transitions. [2018-09-30 23:21:15,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-30 23:21:15,061 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 50 [2018-09-30 23:21:15,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:15,061 INFO L225 Difference]: With dead ends: 81 [2018-09-30 23:21:15,061 INFO L226 Difference]: Without dead ends: 55 [2018-09-30 23:21:15,062 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-09-30 23:21:15,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-09-30 23:21:15,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-09-30 23:21:15,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-09-30 23:21:15,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2018-09-30 23:21:15,069 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 50 [2018-09-30 23:21:15,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:15,069 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2018-09-30 23:21:15,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-30 23:21:15,070 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2018-09-30 23:21:15,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-09-30 23:21:15,071 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:15,071 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 1, 1, 1, 1] [2018-09-30 23:21:15,071 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:15,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:15,071 INFO L82 PathProgramCache]: Analyzing trace with hash 75236667, now seen corresponding path program 12 times [2018-09-30 23:21:15,072 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:15,072 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:15,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:15,073 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:21:15,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:15,305 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-09-30 23:21:15,305 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:15,306 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:15,313 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 23:21:15,353 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-09-30 23:21:15,353 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:21:15,356 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:15,370 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-09-30 23:21:15,396 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:15,397 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-09-30 23:21:15,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-30 23:21:15,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-30 23:21:15,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-09-30 23:21:15,398 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 15 states. [2018-09-30 23:21:15,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:15,473 INFO L93 Difference]: Finished difference Result 87 states and 90 transitions. [2018-09-30 23:21:15,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-30 23:21:15,473 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2018-09-30 23:21:15,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:15,474 INFO L225 Difference]: With dead ends: 87 [2018-09-30 23:21:15,475 INFO L226 Difference]: Without dead ends: 59 [2018-09-30 23:21:15,475 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-09-30 23:21:15,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-09-30 23:21:15,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-09-30 23:21:15,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-09-30 23:21:15,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2018-09-30 23:21:15,482 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 54 [2018-09-30 23:21:15,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:15,483 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2018-09-30 23:21:15,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-30 23:21:15,483 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2018-09-30 23:21:15,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-09-30 23:21:15,484 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:15,484 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 1, 1, 1, 1] [2018-09-30 23:21:15,485 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:15,485 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:15,485 INFO L82 PathProgramCache]: Analyzing trace with hash 361552815, now seen corresponding path program 13 times [2018-09-30 23:21:15,485 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:15,485 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:15,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:15,486 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:21:15,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:15,697 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-09-30 23:21:15,698 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:15,698 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:15,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:21:15,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:15,748 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:15,766 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-09-30 23:21:15,793 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:15,793 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-09-30 23:21:15,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-30 23:21:15,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-30 23:21:15,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-09-30 23:21:15,794 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 16 states. [2018-09-30 23:21:16,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:16,061 INFO L93 Difference]: Finished difference Result 93 states and 96 transitions. [2018-09-30 23:21:16,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-30 23:21:16,062 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2018-09-30 23:21:16,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:16,063 INFO L225 Difference]: With dead ends: 93 [2018-09-30 23:21:16,063 INFO L226 Difference]: Without dead ends: 63 [2018-09-30 23:21:16,064 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-09-30 23:21:16,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-30 23:21:16,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-30 23:21:16,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-30 23:21:16,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2018-09-30 23:21:16,078 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 58 [2018-09-30 23:21:16,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:16,079 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2018-09-30 23:21:16,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-30 23:21:16,079 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2018-09-30 23:21:16,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-09-30 23:21:16,080 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:16,080 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 1, 1, 1, 1] [2018-09-30 23:21:16,084 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:16,084 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:16,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1008142301, now seen corresponding path program 14 times [2018-09-30 23:21:16,084 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:16,084 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:16,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:16,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:21:16,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:16,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:16,375 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-09-30 23:21:16,375 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:16,375 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:16,388 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 23:21:16,432 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 23:21:16,432 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:21:16,435 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:16,450 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-09-30 23:21:16,478 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:16,479 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-09-30 23:21:16,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-30 23:21:16,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-30 23:21:16,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-09-30 23:21:16,480 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 17 states. [2018-09-30 23:21:16,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:16,552 INFO L93 Difference]: Finished difference Result 99 states and 102 transitions. [2018-09-30 23:21:16,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-30 23:21:16,552 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 62 [2018-09-30 23:21:16,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:16,554 INFO L225 Difference]: With dead ends: 99 [2018-09-30 23:21:16,554 INFO L226 Difference]: Without dead ends: 67 [2018-09-30 23:21:16,555 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-09-30 23:21:16,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-09-30 23:21:16,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-09-30 23:21:16,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-09-30 23:21:16,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2018-09-30 23:21:16,562 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 62 [2018-09-30 23:21:16,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:16,562 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2018-09-30 23:21:16,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-30 23:21:16,563 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2018-09-30 23:21:16,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-09-30 23:21:16,564 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:16,564 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 1, 1, 1, 1] [2018-09-30 23:21:16,564 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:16,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:16,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1978312041, now seen corresponding path program 15 times [2018-09-30 23:21:16,565 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:16,565 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:16,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:16,566 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:21:16,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:16,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:17,140 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-09-30 23:21:17,142 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:17,143 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:17,152 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 23:21:17,252 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-09-30 23:21:17,253 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:21:17,256 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:17,272 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-09-30 23:21:17,303 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:17,303 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-09-30 23:21:17,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-30 23:21:17,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-30 23:21:17,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-09-30 23:21:17,305 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand 18 states. [2018-09-30 23:21:17,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:17,606 INFO L93 Difference]: Finished difference Result 105 states and 108 transitions. [2018-09-30 23:21:17,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-30 23:21:17,607 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 66 [2018-09-30 23:21:17,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:17,608 INFO L225 Difference]: With dead ends: 105 [2018-09-30 23:21:17,608 INFO L226 Difference]: Without dead ends: 71 [2018-09-30 23:21:17,609 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-09-30 23:21:17,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-09-30 23:21:17,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-09-30 23:21:17,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-09-30 23:21:17,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2018-09-30 23:21:17,615 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 66 [2018-09-30 23:21:17,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:17,616 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2018-09-30 23:21:17,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-30 23:21:17,616 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2018-09-30 23:21:17,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-09-30 23:21:17,617 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:17,617 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 1, 1, 1, 1] [2018-09-30 23:21:17,617 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:17,617 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:17,618 INFO L82 PathProgramCache]: Analyzing trace with hash 303497995, now seen corresponding path program 16 times [2018-09-30 23:21:17,618 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:17,618 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:17,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:17,619 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:21:17,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:17,847 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2018-09-30 23:21:17,847 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:17,848 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:17,856 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 23:21:17,888 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 23:21:17,888 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:21:17,890 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:17,904 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2018-09-30 23:21:17,935 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:17,935 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-09-30 23:21:17,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-30 23:21:17,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-30 23:21:17,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-09-30 23:21:17,936 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 19 states. [2018-09-30 23:21:18,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:18,210 INFO L93 Difference]: Finished difference Result 111 states and 114 transitions. [2018-09-30 23:21:18,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-30 23:21:18,211 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 70 [2018-09-30 23:21:18,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:18,211 INFO L225 Difference]: With dead ends: 111 [2018-09-30 23:21:18,212 INFO L226 Difference]: Without dead ends: 75 [2018-09-30 23:21:18,212 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-09-30 23:21:18,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-09-30 23:21:18,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-09-30 23:21:18,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-09-30 23:21:18,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2018-09-30 23:21:18,218 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 70 [2018-09-30 23:21:18,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:18,218 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2018-09-30 23:21:18,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-30 23:21:18,218 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2018-09-30 23:21:18,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-09-30 23:21:18,219 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:18,219 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 1, 1, 1, 1] [2018-09-30 23:21:18,219 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:18,219 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:18,220 INFO L82 PathProgramCache]: Analyzing trace with hash -177016449, now seen corresponding path program 17 times [2018-09-30 23:21:18,220 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:18,220 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:18,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:18,221 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:21:18,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:18,765 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-09-30 23:21:18,765 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:18,765 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:18,772 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 23:21:18,840 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-09-30 23:21:18,840 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:21:18,843 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:18,856 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-09-30 23:21:18,881 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:18,881 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-09-30 23:21:18,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-30 23:21:18,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-30 23:21:18,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-09-30 23:21:18,882 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 20 states. [2018-09-30 23:21:18,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:18,969 INFO L93 Difference]: Finished difference Result 117 states and 120 transitions. [2018-09-30 23:21:18,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-30 23:21:18,970 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 74 [2018-09-30 23:21:18,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:18,971 INFO L225 Difference]: With dead ends: 117 [2018-09-30 23:21:18,971 INFO L226 Difference]: Without dead ends: 79 [2018-09-30 23:21:18,972 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-09-30 23:21:18,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-09-30 23:21:18,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-09-30 23:21:18,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-09-30 23:21:18,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2018-09-30 23:21:18,980 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 74 [2018-09-30 23:21:18,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:18,981 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2018-09-30 23:21:18,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-30 23:21:18,981 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2018-09-30 23:21:18,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-09-30 23:21:18,982 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:18,982 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 1, 1, 1, 1] [2018-09-30 23:21:18,982 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:18,983 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:18,983 INFO L82 PathProgramCache]: Analyzing trace with hash 2100176371, now seen corresponding path program 18 times [2018-09-30 23:21:18,983 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:18,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:18,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:18,984 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:21:18,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:19,576 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2018-09-30 23:21:19,576 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:19,576 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:19,583 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 23:21:19,644 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-09-30 23:21:19,644 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:21:19,646 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:19,660 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2018-09-30 23:21:19,680 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:19,681 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-09-30 23:21:19,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-09-30 23:21:19,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-09-30 23:21:19,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-09-30 23:21:19,682 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand 21 states. [2018-09-30 23:21:19,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:19,803 INFO L93 Difference]: Finished difference Result 123 states and 126 transitions. [2018-09-30 23:21:19,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-30 23:21:19,804 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 78 [2018-09-30 23:21:19,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:19,805 INFO L225 Difference]: With dead ends: 123 [2018-09-30 23:21:19,805 INFO L226 Difference]: Without dead ends: 83 [2018-09-30 23:21:19,806 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-09-30 23:21:19,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-09-30 23:21:19,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-09-30 23:21:19,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-09-30 23:21:19,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2018-09-30 23:21:19,811 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 78 [2018-09-30 23:21:19,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:19,811 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2018-09-30 23:21:19,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-09-30 23:21:19,812 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2018-09-30 23:21:19,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-09-30 23:21:19,812 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:19,813 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 1, 1, 1, 1] [2018-09-30 23:21:19,813 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:19,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:19,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1640865895, now seen corresponding path program 19 times [2018-09-30 23:21:19,813 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:19,814 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:19,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:19,814 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:21:19,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:19,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:21,099 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-09-30 23:21:21,099 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:21,099 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:21,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:21:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:21,147 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:21,166 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-09-30 23:21:21,187 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:21,187 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-09-30 23:21:21,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-09-30 23:21:21,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-09-30 23:21:21,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-09-30 23:21:21,189 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 22 states. [2018-09-30 23:21:21,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:21,311 INFO L93 Difference]: Finished difference Result 129 states and 132 transitions. [2018-09-30 23:21:21,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-30 23:21:21,312 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 82 [2018-09-30 23:21:21,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:21,313 INFO L225 Difference]: With dead ends: 129 [2018-09-30 23:21:21,313 INFO L226 Difference]: Without dead ends: 87 [2018-09-30 23:21:21,314 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-09-30 23:21:21,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-09-30 23:21:21,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-09-30 23:21:21,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-09-30 23:21:21,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2018-09-30 23:21:21,320 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 82 [2018-09-30 23:21:21,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:21,320 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2018-09-30 23:21:21,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-09-30 23:21:21,320 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2018-09-30 23:21:21,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-09-30 23:21:21,321 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:21,321 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 1, 1, 1, 1] [2018-09-30 23:21:21,322 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:21,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:21,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1957273381, now seen corresponding path program 20 times [2018-09-30 23:21:21,322 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:21,322 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:21,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:21,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:21:21,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:21,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:21,748 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2018-09-30 23:21:21,748 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:21,749 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:21,756 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 23:21:21,794 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 23:21:21,794 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:21:21,797 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:21,810 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2018-09-30 23:21:21,831 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:21,831 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-09-30 23:21:21,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-09-30 23:21:21,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-09-30 23:21:21,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-09-30 23:21:21,832 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand 23 states. [2018-09-30 23:21:22,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:22,025 INFO L93 Difference]: Finished difference Result 135 states and 138 transitions. [2018-09-30 23:21:22,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-30 23:21:22,026 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 86 [2018-09-30 23:21:22,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:22,026 INFO L225 Difference]: With dead ends: 135 [2018-09-30 23:21:22,026 INFO L226 Difference]: Without dead ends: 91 [2018-09-30 23:21:22,027 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-09-30 23:21:22,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-09-30 23:21:22,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-09-30 23:21:22,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-09-30 23:21:22,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2018-09-30 23:21:22,030 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 86 [2018-09-30 23:21:22,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:22,030 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2018-09-30 23:21:22,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-09-30 23:21:22,030 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2018-09-30 23:21:22,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-09-30 23:21:22,031 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:22,031 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 1, 1, 1, 1] [2018-09-30 23:21:22,031 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:22,031 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:22,031 INFO L82 PathProgramCache]: Analyzing trace with hash -783456433, now seen corresponding path program 21 times [2018-09-30 23:21:22,032 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:22,032 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:22,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:22,032 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:21:22,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:22,373 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2018-09-30 23:21:22,373 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:22,374 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:22,382 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 23:21:22,479 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-09-30 23:21:22,479 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:21:22,482 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:22,494 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2018-09-30 23:21:22,515 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:22,515 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-09-30 23:21:22,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-09-30 23:21:22,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-09-30 23:21:22,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-09-30 23:21:22,516 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 24 states. [2018-09-30 23:21:22,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:22,703 INFO L93 Difference]: Finished difference Result 141 states and 144 transitions. [2018-09-30 23:21:22,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-09-30 23:21:22,706 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 90 [2018-09-30 23:21:22,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:22,706 INFO L225 Difference]: With dead ends: 141 [2018-09-30 23:21:22,707 INFO L226 Difference]: Without dead ends: 95 [2018-09-30 23:21:22,707 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-09-30 23:21:22,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-09-30 23:21:22,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-09-30 23:21:22,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-09-30 23:21:22,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2018-09-30 23:21:22,711 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 90 [2018-09-30 23:21:22,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:22,711 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2018-09-30 23:21:22,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-09-30 23:21:22,711 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2018-09-30 23:21:22,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-09-30 23:21:22,712 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:22,712 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 1, 1, 1, 1] [2018-09-30 23:21:22,712 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:22,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:22,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1162366013, now seen corresponding path program 22 times [2018-09-30 23:21:22,713 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:22,713 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:22,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:22,714 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:21:22,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:23,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2018-09-30 23:21:23,823 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:23,823 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:23,832 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 23:21:23,867 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 23:21:23,868 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:21:23,870 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:23,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2018-09-30 23:21:23,917 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:23,917 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-09-30 23:21:23,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-09-30 23:21:23,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-09-30 23:21:23,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-09-30 23:21:23,918 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand 25 states. [2018-09-30 23:21:24,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:24,150 INFO L93 Difference]: Finished difference Result 147 states and 150 transitions. [2018-09-30 23:21:24,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-30 23:21:24,151 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 94 [2018-09-30 23:21:24,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:24,152 INFO L225 Difference]: With dead ends: 147 [2018-09-30 23:21:24,152 INFO L226 Difference]: Without dead ends: 99 [2018-09-30 23:21:24,153 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-09-30 23:21:24,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-09-30 23:21:24,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-09-30 23:21:24,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-09-30 23:21:24,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2018-09-30 23:21:24,157 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 94 [2018-09-30 23:21:24,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:24,158 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2018-09-30 23:21:24,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-09-30 23:21:24,158 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2018-09-30 23:21:24,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-09-30 23:21:24,159 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:24,159 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 1, 1, 1, 1] [2018-09-30 23:21:24,159 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:24,159 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:24,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1041909303, now seen corresponding path program 23 times [2018-09-30 23:21:24,160 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:24,160 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:24,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:24,161 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:21:24,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:24,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2018-09-30 23:21:24,550 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:24,550 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:24,562 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 23:21:24,730 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-09-30 23:21:24,731 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:21:24,733 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:24,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2018-09-30 23:21:24,772 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:24,772 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-09-30 23:21:24,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-09-30 23:21:24,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-09-30 23:21:24,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-09-30 23:21:24,773 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand 26 states. [2018-09-30 23:21:24,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:24,865 INFO L93 Difference]: Finished difference Result 153 states and 156 transitions. [2018-09-30 23:21:24,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-09-30 23:21:24,866 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 98 [2018-09-30 23:21:24,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:24,867 INFO L225 Difference]: With dead ends: 153 [2018-09-30 23:21:24,867 INFO L226 Difference]: Without dead ends: 103 [2018-09-30 23:21:24,868 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-09-30 23:21:24,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-09-30 23:21:24,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-09-30 23:21:24,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-09-30 23:21:24,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2018-09-30 23:21:24,872 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 98 [2018-09-30 23:21:24,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:24,872 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2018-09-30 23:21:24,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-09-30 23:21:24,872 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2018-09-30 23:21:24,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-09-30 23:21:24,873 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:24,873 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 1, 1, 1, 1] [2018-09-30 23:21:24,873 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:24,874 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:24,874 INFO L82 PathProgramCache]: Analyzing trace with hash -2122703189, now seen corresponding path program 24 times [2018-09-30 23:21:24,874 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:24,874 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:24,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:24,875 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:21:24,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:25,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2018-09-30 23:21:25,452 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:25,452 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:25,459 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 23:21:25,591 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-09-30 23:21:25,592 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:21:25,594 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:25,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2018-09-30 23:21:25,632 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:25,632 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-09-30 23:21:25,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-09-30 23:21:25,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-09-30 23:21:25,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-09-30 23:21:25,633 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 27 states. [2018-09-30 23:21:25,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:25,787 INFO L93 Difference]: Finished difference Result 159 states and 162 transitions. [2018-09-30 23:21:25,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-30 23:21:25,787 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 102 [2018-09-30 23:21:25,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:25,788 INFO L225 Difference]: With dead ends: 159 [2018-09-30 23:21:25,788 INFO L226 Difference]: Without dead ends: 107 [2018-09-30 23:21:25,789 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-09-30 23:21:25,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-09-30 23:21:25,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-09-30 23:21:25,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-09-30 23:21:25,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2018-09-30 23:21:25,794 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 102 [2018-09-30 23:21:25,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:25,794 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2018-09-30 23:21:25,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-09-30 23:21:25,795 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2018-09-30 23:21:25,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-09-30 23:21:25,795 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:25,796 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 1, 1, 1, 1] [2018-09-30 23:21:25,796 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:25,796 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:25,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1705231073, now seen corresponding path program 25 times [2018-09-30 23:21:25,796 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:25,796 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:25,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:25,797 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:21:25,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:25,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:26,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2018-09-30 23:21:26,274 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:26,274 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:26,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:21:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:26,335 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:26,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2018-09-30 23:21:26,379 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:26,379 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-09-30 23:21:26,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-09-30 23:21:26,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-09-30 23:21:26,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-09-30 23:21:26,380 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand 28 states. [2018-09-30 23:21:26,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:26,491 INFO L93 Difference]: Finished difference Result 165 states and 168 transitions. [2018-09-30 23:21:26,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-09-30 23:21:26,491 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 106 [2018-09-30 23:21:26,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:26,493 INFO L225 Difference]: With dead ends: 165 [2018-09-30 23:21:26,493 INFO L226 Difference]: Without dead ends: 111 [2018-09-30 23:21:26,493 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-09-30 23:21:26,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-09-30 23:21:26,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-09-30 23:21:26,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-09-30 23:21:26,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2018-09-30 23:21:26,498 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 106 [2018-09-30 23:21:26,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:26,499 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2018-09-30 23:21:26,499 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-09-30 23:21:26,499 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2018-09-30 23:21:26,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-09-30 23:21:26,500 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:26,500 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 1, 1, 1, 1] [2018-09-30 23:21:26,500 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:26,500 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:26,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1304797587, now seen corresponding path program 26 times [2018-09-30 23:21:26,501 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:26,501 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:26,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:26,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:21:26,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:26,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:27,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2018-09-30 23:21:27,330 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:27,330 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:27,338 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 23:21:27,384 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 23:21:27,384 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:21:27,386 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:27,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2018-09-30 23:21:27,431 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:27,431 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-09-30 23:21:27,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-09-30 23:21:27,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-09-30 23:21:27,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-09-30 23:21:27,432 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 29 states. [2018-09-30 23:21:27,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:27,609 INFO L93 Difference]: Finished difference Result 171 states and 174 transitions. [2018-09-30 23:21:27,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-30 23:21:27,611 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 110 [2018-09-30 23:21:27,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:27,612 INFO L225 Difference]: With dead ends: 171 [2018-09-30 23:21:27,612 INFO L226 Difference]: Without dead ends: 115 [2018-09-30 23:21:27,613 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-09-30 23:21:27,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-09-30 23:21:27,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-09-30 23:21:27,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-09-30 23:21:27,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2018-09-30 23:21:27,615 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 110 [2018-09-30 23:21:27,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:27,616 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2018-09-30 23:21:27,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-09-30 23:21:27,616 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2018-09-30 23:21:27,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-09-30 23:21:27,616 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:27,616 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 1, 1, 1, 1] [2018-09-30 23:21:27,617 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:27,617 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:27,617 INFO L82 PathProgramCache]: Analyzing trace with hash -801420281, now seen corresponding path program 27 times [2018-09-30 23:21:27,617 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:27,617 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:27,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:27,618 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:21:27,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:28,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2018-09-30 23:21:28,168 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:28,168 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:28,176 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 23:21:28,358 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-09-30 23:21:28,359 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:21:28,363 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:28,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2018-09-30 23:21:28,407 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:28,408 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-09-30 23:21:28,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-09-30 23:21:28,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-09-30 23:21:28,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-09-30 23:21:28,409 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand 30 states. [2018-09-30 23:21:28,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:28,547 INFO L93 Difference]: Finished difference Result 177 states and 180 transitions. [2018-09-30 23:21:28,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-30 23:21:28,547 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 114 [2018-09-30 23:21:28,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:28,548 INFO L225 Difference]: With dead ends: 177 [2018-09-30 23:21:28,548 INFO L226 Difference]: Without dead ends: 119 [2018-09-30 23:21:28,550 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-09-30 23:21:28,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-09-30 23:21:28,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-09-30 23:21:28,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-09-30 23:21:28,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2018-09-30 23:21:28,554 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 114 [2018-09-30 23:21:28,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:28,554 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2018-09-30 23:21:28,554 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-09-30 23:21:28,554 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2018-09-30 23:21:28,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-09-30 23:21:28,555 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:28,555 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 1, 1, 1, 1] [2018-09-30 23:21:28,555 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:28,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:28,555 INFO L82 PathProgramCache]: Analyzing trace with hash -2050868101, now seen corresponding path program 28 times [2018-09-30 23:21:28,555 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:28,555 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:28,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:28,556 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:21:28,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:28,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:29,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2018-09-30 23:21:29,668 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:29,668 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:29,675 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 23:21:29,743 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 23:21:29,744 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:21:29,747 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:29,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2018-09-30 23:21:29,799 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:29,799 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-09-30 23:21:29,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-09-30 23:21:29,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-09-30 23:21:29,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-09-30 23:21:29,801 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand 31 states. [2018-09-30 23:21:30,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:30,317 INFO L93 Difference]: Finished difference Result 183 states and 186 transitions. [2018-09-30 23:21:30,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-09-30 23:21:30,317 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 118 [2018-09-30 23:21:30,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:30,318 INFO L225 Difference]: With dead ends: 183 [2018-09-30 23:21:30,318 INFO L226 Difference]: Without dead ends: 123 [2018-09-30 23:21:30,320 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-09-30 23:21:30,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-09-30 23:21:30,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-09-30 23:21:30,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-09-30 23:21:30,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2018-09-30 23:21:30,324 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 118 [2018-09-30 23:21:30,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:30,324 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2018-09-30 23:21:30,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-09-30 23:21:30,325 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2018-09-30 23:21:30,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-09-30 23:21:30,325 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:30,325 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 1, 1, 1, 1] [2018-09-30 23:21:30,325 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:30,326 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:30,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1042320657, now seen corresponding path program 29 times [2018-09-30 23:21:30,326 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:30,326 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:30,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:30,327 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:21:30,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:30,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2018-09-30 23:21:30,793 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:30,793 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:30,803 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 23:21:31,057 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-09-30 23:21:31,058 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:21:31,062 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:31,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2018-09-30 23:21:31,100 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:31,100 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-09-30 23:21:31,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-09-30 23:21:31,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-09-30 23:21:31,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-09-30 23:21:31,102 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand 32 states. [2018-09-30 23:21:31,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:31,256 INFO L93 Difference]: Finished difference Result 189 states and 192 transitions. [2018-09-30 23:21:31,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-09-30 23:21:31,257 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 122 [2018-09-30 23:21:31,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:31,258 INFO L225 Difference]: With dead ends: 189 [2018-09-30 23:21:31,258 INFO L226 Difference]: Without dead ends: 127 [2018-09-30 23:21:31,259 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-09-30 23:21:31,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-09-30 23:21:31,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-09-30 23:21:31,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-09-30 23:21:31,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2018-09-30 23:21:31,264 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 122 [2018-09-30 23:21:31,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:31,264 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2018-09-30 23:21:31,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-09-30 23:21:31,264 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2018-09-30 23:21:31,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-09-30 23:21:31,265 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:31,265 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 1, 1, 1, 1] [2018-09-30 23:21:31,265 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:31,266 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:31,266 INFO L82 PathProgramCache]: Analyzing trace with hash -2020085917, now seen corresponding path program 30 times [2018-09-30 23:21:31,266 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:31,266 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:31,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:31,267 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:21:31,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:31,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:31,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2018-09-30 23:21:31,816 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:31,817 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:31,825 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 23:21:32,002 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-09-30 23:21:32,003 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:21:32,007 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:32,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2018-09-30 23:21:32,054 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:32,055 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-09-30 23:21:32,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-09-30 23:21:32,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-09-30 23:21:32,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-09-30 23:21:32,056 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand 33 states. [2018-09-30 23:21:32,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:32,199 INFO L93 Difference]: Finished difference Result 195 states and 198 transitions. [2018-09-30 23:21:32,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-09-30 23:21:32,199 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 126 [2018-09-30 23:21:32,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:32,201 INFO L225 Difference]: With dead ends: 195 [2018-09-30 23:21:32,201 INFO L226 Difference]: Without dead ends: 131 [2018-09-30 23:21:32,202 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-09-30 23:21:32,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-09-30 23:21:32,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-09-30 23:21:32,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-09-30 23:21:32,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2018-09-30 23:21:32,208 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 126 [2018-09-30 23:21:32,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:32,208 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2018-09-30 23:21:32,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-09-30 23:21:32,208 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2018-09-30 23:21:32,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-09-30 23:21:32,209 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:32,209 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 1, 1, 1, 1] [2018-09-30 23:21:32,210 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:32,210 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:32,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1232122327, now seen corresponding path program 31 times [2018-09-30 23:21:32,210 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:32,210 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:32,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:32,211 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:21:32,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:32,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:32,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2018-09-30 23:21:32,957 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:32,957 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:32,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:21:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:33,014 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:33,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2018-09-30 23:21:33,058 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:33,059 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-09-30 23:21:33,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-09-30 23:21:33,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-09-30 23:21:33,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-09-30 23:21:33,060 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand 34 states. [2018-09-30 23:21:33,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:33,974 INFO L93 Difference]: Finished difference Result 201 states and 204 transitions. [2018-09-30 23:21:33,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-09-30 23:21:33,974 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 130 [2018-09-30 23:21:33,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:33,975 INFO L225 Difference]: With dead ends: 201 [2018-09-30 23:21:33,975 INFO L226 Difference]: Without dead ends: 135 [2018-09-30 23:21:33,976 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-09-30 23:21:33,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-09-30 23:21:33,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-09-30 23:21:33,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-09-30 23:21:33,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2018-09-30 23:21:33,979 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 130 [2018-09-30 23:21:33,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:33,979 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2018-09-30 23:21:33,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-09-30 23:21:33,979 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2018-09-30 23:21:33,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-09-30 23:21:33,980 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:33,980 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 1, 1, 1, 1] [2018-09-30 23:21:33,980 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:33,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:33,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1452361141, now seen corresponding path program 32 times [2018-09-30 23:21:33,981 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:33,981 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:33,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:33,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:21:33,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:33,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:34,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 1056 trivial. 0 not checked. [2018-09-30 23:21:34,591 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:34,591 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:34,599 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 23:21:34,655 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 23:21:34,655 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:21:34,657 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:34,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 1056 trivial. 0 not checked. [2018-09-30 23:21:34,698 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:34,699 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-09-30 23:21:34,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-09-30 23:21:34,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-09-30 23:21:34,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-09-30 23:21:34,700 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand 35 states. [2018-09-30 23:21:34,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:34,848 INFO L93 Difference]: Finished difference Result 207 states and 210 transitions. [2018-09-30 23:21:34,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-30 23:21:34,848 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 134 [2018-09-30 23:21:34,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:34,850 INFO L225 Difference]: With dead ends: 207 [2018-09-30 23:21:34,850 INFO L226 Difference]: Without dead ends: 139 [2018-09-30 23:21:34,851 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-09-30 23:21:34,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-09-30 23:21:34,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-09-30 23:21:34,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-09-30 23:21:34,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2018-09-30 23:21:34,855 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 134 [2018-09-30 23:21:34,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:34,856 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2018-09-30 23:21:34,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-09-30 23:21:34,856 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2018-09-30 23:21:34,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-09-30 23:21:34,856 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:34,857 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 1, 1, 1, 1] [2018-09-30 23:21:34,857 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:34,857 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:34,857 INFO L82 PathProgramCache]: Analyzing trace with hash 957810879, now seen corresponding path program 33 times [2018-09-30 23:21:34,857 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:34,857 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:34,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:34,858 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:21:34,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:36,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2018-09-30 23:21:36,899 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:36,899 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:36,907 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 23:21:37,213 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-09-30 23:21:37,213 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:21:37,216 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:37,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2018-09-30 23:21:37,256 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:37,256 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-09-30 23:21:37,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-09-30 23:21:37,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-09-30 23:21:37,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-09-30 23:21:37,257 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand 36 states. [2018-09-30 23:21:37,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:37,392 INFO L93 Difference]: Finished difference Result 213 states and 216 transitions. [2018-09-30 23:21:37,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-09-30 23:21:37,392 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 138 [2018-09-30 23:21:37,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:37,394 INFO L225 Difference]: With dead ends: 213 [2018-09-30 23:21:37,394 INFO L226 Difference]: Without dead ends: 143 [2018-09-30 23:21:37,395 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-09-30 23:21:37,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-09-30 23:21:37,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-09-30 23:21:37,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-09-30 23:21:37,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2018-09-30 23:21:37,400 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 138 [2018-09-30 23:21:37,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:37,400 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2018-09-30 23:21:37,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-09-30 23:21:37,400 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2018-09-30 23:21:37,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-09-30 23:21:37,401 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:37,401 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 1, 1, 1, 1] [2018-09-30 23:21:37,401 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:37,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:37,402 INFO L82 PathProgramCache]: Analyzing trace with hash 963550515, now seen corresponding path program 34 times [2018-09-30 23:21:37,402 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:37,402 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:37,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:37,403 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:21:37,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:38,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2018-09-30 23:21:38,048 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:38,048 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:38,055 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 23:21:38,115 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 23:21:38,116 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:21:38,118 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:38,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2018-09-30 23:21:38,174 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:38,175 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-09-30 23:21:38,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-09-30 23:21:38,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-09-30 23:21:38,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-09-30 23:21:38,176 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand 37 states. [2018-09-30 23:21:38,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:38,400 INFO L93 Difference]: Finished difference Result 219 states and 222 transitions. [2018-09-30 23:21:38,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-09-30 23:21:38,400 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 142 [2018-09-30 23:21:38,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:38,401 INFO L225 Difference]: With dead ends: 219 [2018-09-30 23:21:38,401 INFO L226 Difference]: Without dead ends: 147 [2018-09-30 23:21:38,402 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-09-30 23:21:38,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-09-30 23:21:38,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-09-30 23:21:38,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-09-30 23:21:38,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2018-09-30 23:21:38,406 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 142 [2018-09-30 23:21:38,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:38,406 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2018-09-30 23:21:38,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-09-30 23:21:38,407 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2018-09-30 23:21:38,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-09-30 23:21:38,407 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:38,408 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 1, 1, 1, 1] [2018-09-30 23:21:38,408 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:38,408 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:38,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1526364071, now seen corresponding path program 35 times [2018-09-30 23:21:38,408 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:38,408 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:38,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:38,409 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:21:38,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:38,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:39,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2018-09-30 23:21:39,627 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:39,627 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:39,635 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 23:21:40,147 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-09-30 23:21:40,147 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:21:40,152 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:40,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2018-09-30 23:21:40,200 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:40,200 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-09-30 23:21:40,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-09-30 23:21:40,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-09-30 23:21:40,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-09-30 23:21:40,201 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand 38 states. [2018-09-30 23:21:40,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:40,437 INFO L93 Difference]: Finished difference Result 225 states and 228 transitions. [2018-09-30 23:21:40,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-09-30 23:21:40,437 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 146 [2018-09-30 23:21:40,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:40,439 INFO L225 Difference]: With dead ends: 225 [2018-09-30 23:21:40,439 INFO L226 Difference]: Without dead ends: 151 [2018-09-30 23:21:40,440 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-09-30 23:21:40,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-09-30 23:21:40,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-09-30 23:21:40,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-09-30 23:21:40,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2018-09-30 23:21:40,445 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 146 [2018-09-30 23:21:40,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:40,445 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2018-09-30 23:21:40,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-09-30 23:21:40,446 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2018-09-30 23:21:40,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-09-30 23:21:40,447 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:40,447 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 1, 1, 1, 1] [2018-09-30 23:21:40,447 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:40,447 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:40,447 INFO L82 PathProgramCache]: Analyzing trace with hash 2109708315, now seen corresponding path program 36 times [2018-09-30 23:21:40,447 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:40,447 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:40,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:40,448 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:21:40,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:40,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:41,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 1332 trivial. 0 not checked. [2018-09-30 23:21:41,544 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:41,544 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:41,553 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 23:21:41,858 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-09-30 23:21:41,859 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:21:41,866 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:41,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 1332 trivial. 0 not checked. [2018-09-30 23:21:41,923 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:41,923 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-09-30 23:21:41,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-09-30 23:21:41,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-09-30 23:21:41,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-09-30 23:21:41,924 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand 39 states. [2018-09-30 23:21:43,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:43,067 INFO L93 Difference]: Finished difference Result 231 states and 234 transitions. [2018-09-30 23:21:43,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-30 23:21:43,068 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 150 [2018-09-30 23:21:43,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:43,069 INFO L225 Difference]: With dead ends: 231 [2018-09-30 23:21:43,069 INFO L226 Difference]: Without dead ends: 155 [2018-09-30 23:21:43,070 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-09-30 23:21:43,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-09-30 23:21:43,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-09-30 23:21:43,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-09-30 23:21:43,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 156 transitions. [2018-09-30 23:21:43,075 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 156 transitions. Word has length 150 [2018-09-30 23:21:43,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:43,076 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 156 transitions. [2018-09-30 23:21:43,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-09-30 23:21:43,076 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 156 transitions. [2018-09-30 23:21:43,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-09-30 23:21:43,077 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:43,077 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 1, 1, 1, 1] [2018-09-30 23:21:43,077 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:43,077 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:43,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1900215951, now seen corresponding path program 37 times [2018-09-30 23:21:43,078 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:43,078 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:43,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:43,079 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:21:43,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:43,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:44,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2018-09-30 23:21:44,405 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:44,405 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:44,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:21:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:44,478 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:44,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2018-09-30 23:21:44,521 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:44,521 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-09-30 23:21:44,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-09-30 23:21:44,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-09-30 23:21:44,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-09-30 23:21:44,522 INFO L87 Difference]: Start difference. First operand 155 states and 156 transitions. Second operand 40 states. [2018-09-30 23:21:44,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:44,695 INFO L93 Difference]: Finished difference Result 237 states and 240 transitions. [2018-09-30 23:21:44,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-09-30 23:21:44,696 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 154 [2018-09-30 23:21:44,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:44,697 INFO L225 Difference]: With dead ends: 237 [2018-09-30 23:21:44,697 INFO L226 Difference]: Without dead ends: 159 [2018-09-30 23:21:44,698 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-09-30 23:21:44,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-09-30 23:21:44,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-09-30 23:21:44,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-09-30 23:21:44,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2018-09-30 23:21:44,703 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 154 [2018-09-30 23:21:44,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:44,703 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2018-09-30 23:21:44,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-09-30 23:21:44,703 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2018-09-30 23:21:44,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-09-30 23:21:44,704 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:44,704 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 1, 1, 1, 1] [2018-09-30 23:21:44,705 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:44,705 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:44,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1266046205, now seen corresponding path program 38 times [2018-09-30 23:21:44,705 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:44,705 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:44,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:44,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:21:44,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:45,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 1482 trivial. 0 not checked. [2018-09-30 23:21:45,621 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:45,621 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:45,629 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 23:21:45,731 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 23:21:45,732 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:21:45,735 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:45,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 1482 trivial. 0 not checked. [2018-09-30 23:21:45,795 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:45,795 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-09-30 23:21:45,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-09-30 23:21:45,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-09-30 23:21:45,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-09-30 23:21:45,796 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand 41 states. [2018-09-30 23:21:47,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:47,322 INFO L93 Difference]: Finished difference Result 243 states and 246 transitions. [2018-09-30 23:21:47,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-09-30 23:21:47,323 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 158 [2018-09-30 23:21:47,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:47,324 INFO L225 Difference]: With dead ends: 243 [2018-09-30 23:21:47,325 INFO L226 Difference]: Without dead ends: 163 [2018-09-30 23:21:47,326 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-09-30 23:21:47,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-09-30 23:21:47,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-09-30 23:21:47,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-09-30 23:21:47,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 164 transitions. [2018-09-30 23:21:47,331 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 164 transitions. Word has length 158 [2018-09-30 23:21:47,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:47,331 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 164 transitions. [2018-09-30 23:21:47,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-09-30 23:21:47,331 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 164 transitions. [2018-09-30 23:21:47,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-09-30 23:21:47,332 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:47,332 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 1, 1, 1, 1] [2018-09-30 23:21:47,332 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:47,332 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:47,333 INFO L82 PathProgramCache]: Analyzing trace with hash 907582839, now seen corresponding path program 39 times [2018-09-30 23:21:47,333 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:47,333 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:47,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:47,333 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:21:47,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:47,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:48,316 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-09-30 23:21:48,316 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:48,316 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:48,324 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 23:21:48,812 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-09-30 23:21:48,813 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:21:48,816 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:48,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-09-30 23:21:48,865 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:48,865 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-09-30 23:21:48,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-09-30 23:21:48,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-09-30 23:21:48,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-09-30 23:21:48,866 INFO L87 Difference]: Start difference. First operand 163 states and 164 transitions. Second operand 42 states. [2018-09-30 23:21:49,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:49,042 INFO L93 Difference]: Finished difference Result 249 states and 252 transitions. [2018-09-30 23:21:49,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-09-30 23:21:49,042 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 162 [2018-09-30 23:21:49,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:49,044 INFO L225 Difference]: With dead ends: 249 [2018-09-30 23:21:49,044 INFO L226 Difference]: Without dead ends: 167 [2018-09-30 23:21:49,046 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-09-30 23:21:49,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-09-30 23:21:49,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-09-30 23:21:49,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-09-30 23:21:49,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2018-09-30 23:21:49,050 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 162 [2018-09-30 23:21:49,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:49,051 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2018-09-30 23:21:49,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-09-30 23:21:49,051 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2018-09-30 23:21:49,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-09-30 23:21:49,052 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:49,052 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 1, 1, 1, 1] [2018-09-30 23:21:49,052 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:49,052 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:49,053 INFO L82 PathProgramCache]: Analyzing trace with hash 334812651, now seen corresponding path program 40 times [2018-09-30 23:21:49,053 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:49,053 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:49,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:49,053 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:21:49,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:49,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 1640 trivial. 0 not checked. [2018-09-30 23:21:49,877 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:49,877 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:49,884 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 23:21:49,960 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 23:21:49,960 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:21:49,963 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:49,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 1640 trivial. 0 not checked. [2018-09-30 23:21:50,021 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:50,022 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-09-30 23:21:50,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-09-30 23:21:50,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-09-30 23:21:50,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-09-30 23:21:50,024 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand 43 states. [2018-09-30 23:21:50,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:50,199 INFO L93 Difference]: Finished difference Result 255 states and 258 transitions. [2018-09-30 23:21:50,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-09-30 23:21:50,199 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 166 [2018-09-30 23:21:50,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:50,201 INFO L225 Difference]: With dead ends: 255 [2018-09-30 23:21:50,201 INFO L226 Difference]: Without dead ends: 171 [2018-09-30 23:21:50,202 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-09-30 23:21:50,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-09-30 23:21:50,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-09-30 23:21:50,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-09-30 23:21:50,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2018-09-30 23:21:50,206 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 166 [2018-09-30 23:21:50,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:50,206 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2018-09-30 23:21:50,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-09-30 23:21:50,206 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2018-09-30 23:21:50,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-09-30 23:21:50,207 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:50,207 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 1, 1, 1, 1] [2018-09-30 23:21:50,207 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:50,207 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:50,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1537430623, now seen corresponding path program 41 times [2018-09-30 23:21:50,207 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:50,208 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:50,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:50,208 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:21:50,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:51,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2018-09-30 23:21:51,080 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:51,080 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:51,096 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 23:21:51,891 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-09-30 23:21:51,891 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:21:51,898 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:51,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2018-09-30 23:21:51,973 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:51,973 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-09-30 23:21:51,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-09-30 23:21:51,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-09-30 23:21:51,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-09-30 23:21:51,975 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand 44 states. [2018-09-30 23:21:52,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:52,219 INFO L93 Difference]: Finished difference Result 261 states and 264 transitions. [2018-09-30 23:21:52,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-09-30 23:21:52,219 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 170 [2018-09-30 23:21:52,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:52,220 INFO L225 Difference]: With dead ends: 261 [2018-09-30 23:21:52,220 INFO L226 Difference]: Without dead ends: 175 [2018-09-30 23:21:52,221 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-09-30 23:21:52,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-09-30 23:21:52,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-09-30 23:21:52,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-09-30 23:21:52,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2018-09-30 23:21:52,226 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 170 [2018-09-30 23:21:52,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:52,226 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2018-09-30 23:21:52,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-09-30 23:21:52,226 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2018-09-30 23:21:52,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-09-30 23:21:52,227 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:52,228 INFO L375 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 1, 1, 1, 1] [2018-09-30 23:21:52,228 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:52,228 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:52,228 INFO L82 PathProgramCache]: Analyzing trace with hash -903276333, now seen corresponding path program 42 times [2018-09-30 23:21:52,228 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:52,228 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:52,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:52,229 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:21:52,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:53,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 1806 trivial. 0 not checked. [2018-09-30 23:21:53,454 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:53,454 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:53,470 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 23:21:53,949 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-09-30 23:21:53,950 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:21:53,955 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:53,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 1806 trivial. 0 not checked. [2018-09-30 23:21:54,020 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:54,020 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-09-30 23:21:54,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-09-30 23:21:54,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-09-30 23:21:54,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-09-30 23:21:54,022 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand 45 states. [2018-09-30 23:21:54,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:54,579 INFO L93 Difference]: Finished difference Result 267 states and 270 transitions. [2018-09-30 23:21:54,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-30 23:21:54,579 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 174 [2018-09-30 23:21:54,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:54,580 INFO L225 Difference]: With dead ends: 267 [2018-09-30 23:21:54,580 INFO L226 Difference]: Without dead ends: 179 [2018-09-30 23:21:54,581 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-09-30 23:21:54,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-09-30 23:21:54,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-09-30 23:21:54,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-09-30 23:21:54,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 180 transitions. [2018-09-30 23:21:54,586 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 180 transitions. Word has length 174 [2018-09-30 23:21:54,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:54,586 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 180 transitions. [2018-09-30 23:21:54,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-09-30 23:21:54,586 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 180 transitions. [2018-09-30 23:21:54,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-09-30 23:21:54,587 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:54,588 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 1, 1, 1, 1] [2018-09-30 23:21:54,588 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:54,588 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:54,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1945427129, now seen corresponding path program 43 times [2018-09-30 23:21:54,588 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:54,588 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:54,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:54,589 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:21:54,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:54,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:55,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 1892 trivial. 0 not checked. [2018-09-30 23:21:55,468 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:55,468 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:55,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:21:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:55,552 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:55,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 1892 trivial. 0 not checked. [2018-09-30 23:21:55,602 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:55,602 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-09-30 23:21:55,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-09-30 23:21:55,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-09-30 23:21:55,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-09-30 23:21:55,604 INFO L87 Difference]: Start difference. First operand 179 states and 180 transitions. Second operand 46 states. [2018-09-30 23:21:55,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:55,835 INFO L93 Difference]: Finished difference Result 273 states and 276 transitions. [2018-09-30 23:21:55,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-09-30 23:21:55,835 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 178 [2018-09-30 23:21:55,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:55,837 INFO L225 Difference]: With dead ends: 273 [2018-09-30 23:21:55,837 INFO L226 Difference]: Without dead ends: 183 [2018-09-30 23:21:55,838 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-09-30 23:21:55,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-09-30 23:21:55,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-09-30 23:21:55,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-09-30 23:21:55,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2018-09-30 23:21:55,842 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 178 [2018-09-30 23:21:55,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:55,842 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2018-09-30 23:21:55,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-09-30 23:21:55,842 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2018-09-30 23:21:55,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-09-30 23:21:55,843 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:55,843 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 1, 1, 1, 1] [2018-09-30 23:21:55,843 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:55,843 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:55,844 INFO L82 PathProgramCache]: Analyzing trace with hash -45190213, now seen corresponding path program 44 times [2018-09-30 23:21:55,844 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:55,844 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:55,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:55,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:21:55,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:55,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:57,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 1980 trivial. 0 not checked. [2018-09-30 23:21:57,368 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:57,368 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:57,375 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 23:21:57,450 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 23:21:57,450 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:21:57,453 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:57,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 1980 trivial. 0 not checked. [2018-09-30 23:21:57,508 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:57,508 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-09-30 23:21:57,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-09-30 23:21:57,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-09-30 23:21:57,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-09-30 23:21:57,510 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand 47 states. [2018-09-30 23:21:57,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:57,727 INFO L93 Difference]: Finished difference Result 279 states and 282 transitions. [2018-09-30 23:21:57,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-09-30 23:21:57,728 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 182 [2018-09-30 23:21:57,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:57,729 INFO L225 Difference]: With dead ends: 279 [2018-09-30 23:21:57,729 INFO L226 Difference]: Without dead ends: 187 [2018-09-30 23:21:57,731 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-09-30 23:21:57,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-09-30 23:21:57,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-09-30 23:21:57,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-09-30 23:21:57,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 188 transitions. [2018-09-30 23:21:57,736 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 188 transitions. Word has length 182 [2018-09-30 23:21:57,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:57,736 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 188 transitions. [2018-09-30 23:21:57,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-09-30 23:21:57,736 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 188 transitions. [2018-09-30 23:21:57,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-09-30 23:21:57,737 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:57,738 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 1, 1, 1, 1] [2018-09-30 23:21:57,738 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:57,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:57,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1769474607, now seen corresponding path program 45 times [2018-09-30 23:21:57,738 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:57,738 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:57,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:57,739 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:21:57,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:57,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:21:58,716 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 2070 trivial. 0 not checked. [2018-09-30 23:21:58,716 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:21:58,717 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:21:58,725 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 23:21:59,618 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-09-30 23:21:59,619 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:21:59,624 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:21:59,659 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 2070 trivial. 0 not checked. [2018-09-30 23:21:59,689 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:21:59,690 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-09-30 23:21:59,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-09-30 23:21:59,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-09-30 23:21:59,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-09-30 23:21:59,691 INFO L87 Difference]: Start difference. First operand 187 states and 188 transitions. Second operand 48 states. [2018-09-30 23:21:59,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:21:59,980 INFO L93 Difference]: Finished difference Result 285 states and 288 transitions. [2018-09-30 23:21:59,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-09-30 23:21:59,981 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 186 [2018-09-30 23:21:59,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:21:59,982 INFO L225 Difference]: With dead ends: 285 [2018-09-30 23:21:59,982 INFO L226 Difference]: Without dead ends: 191 [2018-09-30 23:21:59,983 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-09-30 23:21:59,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-09-30 23:21:59,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-09-30 23:21:59,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-09-30 23:21:59,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2018-09-30 23:21:59,989 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 186 [2018-09-30 23:21:59,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:21:59,989 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2018-09-30 23:21:59,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-09-30 23:21:59,989 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2018-09-30 23:21:59,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-09-30 23:21:59,990 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:21:59,990 INFO L375 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 1, 1, 1, 1] [2018-09-30 23:21:59,991 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:21:59,991 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:21:59,991 INFO L82 PathProgramCache]: Analyzing trace with hash -879958365, now seen corresponding path program 46 times [2018-09-30 23:21:59,991 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:21:59,991 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:21:59,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:21:59,992 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:21:59,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:22:01,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 2162 trivial. 0 not checked. [2018-09-30 23:22:01,215 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:22:01,215 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:22:01,225 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 23:22:01,315 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 23:22:01,316 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:22:01,320 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:22:01,355 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 2162 trivial. 0 not checked. [2018-09-30 23:22:01,385 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:22:01,386 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-09-30 23:22:01,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-09-30 23:22:01,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-09-30 23:22:01,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-09-30 23:22:01,387 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand 49 states. [2018-09-30 23:22:01,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:22:01,616 INFO L93 Difference]: Finished difference Result 291 states and 294 transitions. [2018-09-30 23:22:01,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-09-30 23:22:01,616 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 190 [2018-09-30 23:22:01,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:22:01,617 INFO L225 Difference]: With dead ends: 291 [2018-09-30 23:22:01,618 INFO L226 Difference]: Without dead ends: 195 [2018-09-30 23:22:01,618 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-09-30 23:22:01,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-09-30 23:22:01,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-09-30 23:22:01,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-09-30 23:22:01,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 196 transitions. [2018-09-30 23:22:01,623 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 196 transitions. Word has length 190 [2018-09-30 23:22:01,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:22:01,624 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 196 transitions. [2018-09-30 23:22:01,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-09-30 23:22:01,624 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 196 transitions. [2018-09-30 23:22:01,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-09-30 23:22:01,625 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:22:01,625 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 1, 1, 1, 1] [2018-09-30 23:22:01,625 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:22:01,625 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:22:01,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1911420649, now seen corresponding path program 47 times [2018-09-30 23:22:01,626 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:22:01,626 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:22:01,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:01,627 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:22:01,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:01,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:22:02,589 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 2256 trivial. 0 not checked. [2018-09-30 23:22:02,590 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:22:02,590 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:22:02,597 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 23:22:03,670 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-09-30 23:22:03,671 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:22:03,677 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:22:03,736 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 2256 trivial. 0 not checked. [2018-09-30 23:22:03,769 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:22:03,769 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-09-30 23:22:03,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-09-30 23:22:03,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-09-30 23:22:03,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-09-30 23:22:03,770 INFO L87 Difference]: Start difference. First operand 195 states and 196 transitions. Second operand 50 states. [2018-09-30 23:22:04,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:22:04,103 INFO L93 Difference]: Finished difference Result 297 states and 300 transitions. [2018-09-30 23:22:04,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-09-30 23:22:04,104 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 194 [2018-09-30 23:22:04,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:22:04,105 INFO L225 Difference]: With dead ends: 297 [2018-09-30 23:22:04,105 INFO L226 Difference]: Without dead ends: 199 [2018-09-30 23:22:04,106 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-09-30 23:22:04,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-09-30 23:22:04,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-09-30 23:22:04,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-09-30 23:22:04,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2018-09-30 23:22:04,111 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 194 [2018-09-30 23:22:04,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:22:04,112 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2018-09-30 23:22:04,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-09-30 23:22:04,112 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2018-09-30 23:22:04,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-09-30 23:22:04,113 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:22:04,113 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 1, 1, 1, 1] [2018-09-30 23:22:04,113 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:22:04,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:22:04,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1259106699, now seen corresponding path program 48 times [2018-09-30 23:22:04,114 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:22:04,114 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:22:04,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:04,114 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:22:04,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:04,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:22:05,504 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 2352 trivial. 0 not checked. [2018-09-30 23:22:05,504 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:22:05,504 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:22:05,511 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 23:22:06,238 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-09-30 23:22:06,238 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:22:06,247 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:22:06,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 2352 trivial. 0 not checked. [2018-09-30 23:22:06,302 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:22:06,303 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-09-30 23:22:06,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-09-30 23:22:06,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-09-30 23:22:06,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-09-30 23:22:06,304 INFO L87 Difference]: Start difference. First operand 199 states and 200 transitions. Second operand 51 states. [2018-09-30 23:22:06,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:22:06,560 INFO L93 Difference]: Finished difference Result 303 states and 306 transitions. [2018-09-30 23:22:06,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-09-30 23:22:06,561 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 198 [2018-09-30 23:22:06,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:22:06,562 INFO L225 Difference]: With dead ends: 303 [2018-09-30 23:22:06,562 INFO L226 Difference]: Without dead ends: 203 [2018-09-30 23:22:06,563 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-09-30 23:22:06,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-09-30 23:22:06,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-09-30 23:22:06,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-09-30 23:22:06,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 204 transitions. [2018-09-30 23:22:06,567 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 204 transitions. Word has length 198 [2018-09-30 23:22:06,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:22:06,567 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 204 transitions. [2018-09-30 23:22:06,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-09-30 23:22:06,567 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 204 transitions. [2018-09-30 23:22:06,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-09-30 23:22:06,568 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:22:06,568 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 1, 1, 1, 1] [2018-09-30 23:22:06,568 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:22:06,569 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:22:06,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1946083329, now seen corresponding path program 49 times [2018-09-30 23:22:06,569 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:22:06,569 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:22:06,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:06,569 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:22:06,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:22:07,709 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2018-09-30 23:22:07,709 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:22:07,709 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:22:07,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:22:07,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:22:07,801 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:22:07,842 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2018-09-30 23:22:07,875 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:22:07,875 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-09-30 23:22:07,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-09-30 23:22:07,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-09-30 23:22:07,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-09-30 23:22:07,876 INFO L87 Difference]: Start difference. First operand 203 states and 204 transitions. Second operand 52 states. [2018-09-30 23:22:08,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:22:08,197 INFO L93 Difference]: Finished difference Result 309 states and 312 transitions. [2018-09-30 23:22:08,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-09-30 23:22:08,198 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 202 [2018-09-30 23:22:08,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:22:08,199 INFO L225 Difference]: With dead ends: 309 [2018-09-30 23:22:08,200 INFO L226 Difference]: Without dead ends: 207 [2018-09-30 23:22:08,200 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-09-30 23:22:08,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-09-30 23:22:08,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-09-30 23:22:08,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-09-30 23:22:08,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2018-09-30 23:22:08,204 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 202 [2018-09-30 23:22:08,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:22:08,205 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2018-09-30 23:22:08,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-09-30 23:22:08,205 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2018-09-30 23:22:08,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-09-30 23:22:08,206 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:22:08,206 INFO L375 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 1, 1, 1, 1] [2018-09-30 23:22:08,206 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:22:08,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:22:08,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1980427149, now seen corresponding path program 50 times [2018-09-30 23:22:08,207 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:22:08,207 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:22:08,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:08,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:22:08,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:22:09,401 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2018-09-30 23:22:09,402 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:22:09,402 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:22:09,410 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 23:22:09,494 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 23:22:09,494 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:22:09,497 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:22:09,535 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2018-09-30 23:22:09,557 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:22:09,557 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-09-30 23:22:09,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-09-30 23:22:09,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-09-30 23:22:09,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-09-30 23:22:09,558 INFO L87 Difference]: Start difference. First operand 207 states and 208 transitions. Second operand 53 states. [2018-09-30 23:22:10,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:22:10,384 INFO L93 Difference]: Finished difference Result 315 states and 318 transitions. [2018-09-30 23:22:10,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-09-30 23:22:10,385 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 206 [2018-09-30 23:22:10,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:22:10,387 INFO L225 Difference]: With dead ends: 315 [2018-09-30 23:22:10,387 INFO L226 Difference]: Without dead ends: 211 [2018-09-30 23:22:10,388 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-09-30 23:22:10,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-09-30 23:22:10,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-09-30 23:22:10,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-09-30 23:22:10,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 212 transitions. [2018-09-30 23:22:10,393 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 212 transitions. Word has length 206 [2018-09-30 23:22:10,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:22:10,393 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 212 transitions. [2018-09-30 23:22:10,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-09-30 23:22:10,394 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 212 transitions. [2018-09-30 23:22:10,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-09-30 23:22:10,395 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:22:10,395 INFO L375 BasicCegarLoop]: trace histogram [52, 52, 51, 51, 1, 1, 1, 1] [2018-09-30 23:22:10,395 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:22:10,395 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:22:10,396 INFO L82 PathProgramCache]: Analyzing trace with hash -311603481, now seen corresponding path program 51 times [2018-09-30 23:22:10,396 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:22:10,396 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:22:10,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:10,396 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:22:10,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:22:11,592 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 2652 trivial. 0 not checked. [2018-09-30 23:22:11,592 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:22:11,593 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:22:11,600 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 23:22:12,774 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-09-30 23:22:12,774 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:22:12,780 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:22:12,821 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 2652 trivial. 0 not checked. [2018-09-30 23:22:12,847 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:22:12,848 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-09-30 23:22:12,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-09-30 23:22:12,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-09-30 23:22:12,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-09-30 23:22:12,849 INFO L87 Difference]: Start difference. First operand 211 states and 212 transitions. Second operand 54 states. [2018-09-30 23:22:13,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:22:13,151 INFO L93 Difference]: Finished difference Result 321 states and 324 transitions. [2018-09-30 23:22:13,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-09-30 23:22:13,151 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 210 [2018-09-30 23:22:13,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:22:13,153 INFO L225 Difference]: With dead ends: 321 [2018-09-30 23:22:13,153 INFO L226 Difference]: Without dead ends: 215 [2018-09-30 23:22:13,154 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-09-30 23:22:13,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-09-30 23:22:13,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-09-30 23:22:13,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-09-30 23:22:13,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 216 transitions. [2018-09-30 23:22:13,159 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 216 transitions. Word has length 210 [2018-09-30 23:22:13,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:22:13,159 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 216 transitions. [2018-09-30 23:22:13,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-09-30 23:22:13,159 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 216 transitions. [2018-09-30 23:22:13,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-09-30 23:22:13,161 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:22:13,161 INFO L375 BasicCegarLoop]: trace histogram [53, 53, 52, 52, 1, 1, 1, 1] [2018-09-30 23:22:13,161 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:22:13,161 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:22:13,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1905340581, now seen corresponding path program 52 times [2018-09-30 23:22:13,161 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:22:13,162 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:22:13,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:13,162 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:22:13,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:22:14,382 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 2756 trivial. 0 not checked. [2018-09-30 23:22:14,382 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:22:14,383 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:22:14,390 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 23:22:14,481 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 23:22:14,481 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:22:14,504 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:22:14,546 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 2756 trivial. 0 not checked. [2018-09-30 23:22:14,579 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:22:14,580 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-09-30 23:22:14,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-09-30 23:22:14,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-09-30 23:22:14,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-09-30 23:22:14,581 INFO L87 Difference]: Start difference. First operand 215 states and 216 transitions. Second operand 55 states. [2018-09-30 23:22:15,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:22:15,096 INFO L93 Difference]: Finished difference Result 327 states and 330 transitions. [2018-09-30 23:22:15,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-09-30 23:22:15,097 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 214 [2018-09-30 23:22:15,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:22:15,098 INFO L225 Difference]: With dead ends: 327 [2018-09-30 23:22:15,098 INFO L226 Difference]: Without dead ends: 219 [2018-09-30 23:22:15,099 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-09-30 23:22:15,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-09-30 23:22:15,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-09-30 23:22:15,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-09-30 23:22:15,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 220 transitions. [2018-09-30 23:22:15,105 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 220 transitions. Word has length 214 [2018-09-30 23:22:15,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:22:15,105 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 220 transitions. [2018-09-30 23:22:15,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-09-30 23:22:15,105 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 220 transitions. [2018-09-30 23:22:15,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-09-30 23:22:15,106 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:22:15,106 INFO L375 BasicCegarLoop]: trace histogram [54, 54, 53, 53, 1, 1, 1, 1] [2018-09-30 23:22:15,107 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:22:15,107 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:22:15,107 INFO L82 PathProgramCache]: Analyzing trace with hash 880711119, now seen corresponding path program 53 times [2018-09-30 23:22:15,107 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:22:15,107 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:22:15,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:15,108 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:22:15,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:15,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:22:16,330 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 2862 trivial. 0 not checked. [2018-09-30 23:22:16,330 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:22:16,331 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:22:16,341 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 23:22:18,159 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-09-30 23:22:18,160 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:22:18,166 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:22:18,207 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 2862 trivial. 0 not checked. [2018-09-30 23:22:18,248 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:22:18,248 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-09-30 23:22:18,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-09-30 23:22:18,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-09-30 23:22:18,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-09-30 23:22:18,250 INFO L87 Difference]: Start difference. First operand 219 states and 220 transitions. Second operand 56 states. [2018-09-30 23:22:18,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:22:18,702 INFO L93 Difference]: Finished difference Result 333 states and 336 transitions. [2018-09-30 23:22:18,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-09-30 23:22:18,703 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 218 [2018-09-30 23:22:18,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:22:18,704 INFO L225 Difference]: With dead ends: 333 [2018-09-30 23:22:18,704 INFO L226 Difference]: Without dead ends: 223 [2018-09-30 23:22:18,705 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-09-30 23:22:18,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-09-30 23:22:18,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-09-30 23:22:18,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-09-30 23:22:18,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 224 transitions. [2018-09-30 23:22:18,710 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 224 transitions. Word has length 218 [2018-09-30 23:22:18,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:22:18,710 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 224 transitions. [2018-09-30 23:22:18,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-09-30 23:22:18,710 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 224 transitions. [2018-09-30 23:22:18,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-09-30 23:22:18,711 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:22:18,711 INFO L375 BasicCegarLoop]: trace histogram [55, 55, 54, 54, 1, 1, 1, 1] [2018-09-30 23:22:18,712 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:22:18,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:22:18,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1453433411, now seen corresponding path program 54 times [2018-09-30 23:22:18,712 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:22:18,712 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:22:18,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:18,713 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:22:18,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:22:20,409 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 2970 trivial. 0 not checked. [2018-09-30 23:22:20,410 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:22:20,410 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:22:20,417 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 23:22:21,337 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-09-30 23:22:21,338 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:22:21,345 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:22:21,389 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 2970 trivial. 0 not checked. [2018-09-30 23:22:21,414 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:22:21,414 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-09-30 23:22:21,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-09-30 23:22:21,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-09-30 23:22:21,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-09-30 23:22:21,415 INFO L87 Difference]: Start difference. First operand 223 states and 224 transitions. Second operand 57 states. [2018-09-30 23:22:21,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:22:21,770 INFO L93 Difference]: Finished difference Result 339 states and 342 transitions. [2018-09-30 23:22:21,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-09-30 23:22:21,771 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 222 [2018-09-30 23:22:21,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:22:21,772 INFO L225 Difference]: With dead ends: 339 [2018-09-30 23:22:21,772 INFO L226 Difference]: Without dead ends: 227 [2018-09-30 23:22:21,773 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-09-30 23:22:21,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-09-30 23:22:21,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-09-30 23:22:21,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-09-30 23:22:21,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 228 transitions. [2018-09-30 23:22:21,778 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 228 transitions. Word has length 222 [2018-09-30 23:22:21,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:22:21,778 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 228 transitions. [2018-09-30 23:22:21,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-09-30 23:22:21,778 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 228 transitions. [2018-09-30 23:22:21,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-09-30 23:22:21,779 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:22:21,780 INFO L375 BasicCegarLoop]: trace histogram [56, 56, 55, 55, 1, 1, 1, 1] [2018-09-30 23:22:21,780 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:22:21,780 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:22:21,780 INFO L82 PathProgramCache]: Analyzing trace with hash -614665033, now seen corresponding path program 55 times [2018-09-30 23:22:21,780 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:22:21,780 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:22:21,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:21,781 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:22:21,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:21,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:22:23,230 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 3080 trivial. 0 not checked. [2018-09-30 23:22:23,231 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:22:23,231 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:22:23,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:22:23,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:22:23,334 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:22:23,379 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 3080 trivial. 0 not checked. [2018-09-30 23:22:23,410 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:22:23,411 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-09-30 23:22:23,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-09-30 23:22:23,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-09-30 23:22:23,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-09-30 23:22:23,412 INFO L87 Difference]: Start difference. First operand 227 states and 228 transitions. Second operand 58 states. [2018-09-30 23:22:24,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:22:24,517 INFO L93 Difference]: Finished difference Result 345 states and 348 transitions. [2018-09-30 23:22:24,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-09-30 23:22:24,517 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 226 [2018-09-30 23:22:24,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:22:24,519 INFO L225 Difference]: With dead ends: 345 [2018-09-30 23:22:24,519 INFO L226 Difference]: Without dead ends: 231 [2018-09-30 23:22:24,520 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-09-30 23:22:24,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-09-30 23:22:24,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-09-30 23:22:24,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-09-30 23:22:24,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 232 transitions. [2018-09-30 23:22:24,525 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 232 transitions. Word has length 226 [2018-09-30 23:22:24,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:22:24,525 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 232 transitions. [2018-09-30 23:22:24,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-09-30 23:22:24,526 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 232 transitions. [2018-09-30 23:22:24,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-09-30 23:22:24,527 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:22:24,527 INFO L375 BasicCegarLoop]: trace histogram [57, 57, 56, 56, 1, 1, 1, 1] [2018-09-30 23:22:24,527 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:22:24,527 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:22:24,527 INFO L82 PathProgramCache]: Analyzing trace with hash -659190485, now seen corresponding path program 56 times [2018-09-30 23:22:24,528 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:22:24,528 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:22:24,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:24,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:22:24,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:24,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:22:26,288 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 3192 trivial. 0 not checked. [2018-09-30 23:22:26,289 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:22:26,289 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:22:26,296 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 23:22:26,401 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 23:22:26,402 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:22:26,405 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:22:26,444 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 3192 trivial. 0 not checked. [2018-09-30 23:22:26,464 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:22:26,465 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-09-30 23:22:26,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-09-30 23:22:26,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-09-30 23:22:26,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-09-30 23:22:26,466 INFO L87 Difference]: Start difference. First operand 231 states and 232 transitions. Second operand 59 states. [2018-09-30 23:22:26,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:22:26,861 INFO L93 Difference]: Finished difference Result 351 states and 354 transitions. [2018-09-30 23:22:26,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-09-30 23:22:26,861 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 230 [2018-09-30 23:22:26,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:22:26,863 INFO L225 Difference]: With dead ends: 351 [2018-09-30 23:22:26,863 INFO L226 Difference]: Without dead ends: 235 [2018-09-30 23:22:26,863 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-09-30 23:22:26,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-09-30 23:22:26,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-09-30 23:22:26,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-09-30 23:22:26,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 236 transitions. [2018-09-30 23:22:26,868 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 236 transitions. Word has length 230 [2018-09-30 23:22:26,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:22:26,869 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 236 transitions. [2018-09-30 23:22:26,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-09-30 23:22:26,869 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 236 transitions. [2018-09-30 23:22:26,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-09-30 23:22:26,870 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:22:26,870 INFO L375 BasicCegarLoop]: trace histogram [58, 58, 57, 57, 1, 1, 1, 1] [2018-09-30 23:22:26,870 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:22:26,871 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:22:26,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1412459423, now seen corresponding path program 57 times [2018-09-30 23:22:26,871 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:22:26,871 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:22:26,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:26,872 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:22:26,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:22:28,227 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2018-09-30 23:22:28,228 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:22:28,228 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:22:28,238 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 23:22:30,021 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2018-09-30 23:22:30,021 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:22:30,026 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:22:30,072 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2018-09-30 23:22:30,096 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:22:30,097 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-09-30 23:22:30,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-09-30 23:22:30,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-09-30 23:22:30,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-09-30 23:22:30,098 INFO L87 Difference]: Start difference. First operand 235 states and 236 transitions. Second operand 60 states. [2018-09-30 23:22:30,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:22:30,524 INFO L93 Difference]: Finished difference Result 357 states and 360 transitions. [2018-09-30 23:22:30,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-09-30 23:22:30,525 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 234 [2018-09-30 23:22:30,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:22:30,526 INFO L225 Difference]: With dead ends: 357 [2018-09-30 23:22:30,526 INFO L226 Difference]: Without dead ends: 239 [2018-09-30 23:22:30,527 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-09-30 23:22:30,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-09-30 23:22:30,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-09-30 23:22:30,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-09-30 23:22:30,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 240 transitions. [2018-09-30 23:22:30,531 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 240 transitions. Word has length 234 [2018-09-30 23:22:30,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:22:30,531 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 240 transitions. [2018-09-30 23:22:30,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-09-30 23:22:30,531 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 240 transitions. [2018-09-30 23:22:30,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-09-30 23:22:30,532 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:22:30,532 INFO L375 BasicCegarLoop]: trace histogram [59, 59, 58, 58, 1, 1, 1, 1] [2018-09-30 23:22:30,533 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:22:30,533 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:22:30,533 INFO L82 PathProgramCache]: Analyzing trace with hash 47353875, now seen corresponding path program 58 times [2018-09-30 23:22:30,533 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:22:30,533 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:22:30,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:30,534 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:22:30,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:22:32,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 3422 trivial. 0 not checked. [2018-09-30 23:22:32,098 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:22:32,099 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:22:32,106 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 23:22:32,203 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 23:22:32,203 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:22:32,206 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:22:32,243 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 3422 trivial. 0 not checked. [2018-09-30 23:22:32,263 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:22:32,263 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-09-30 23:22:32,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-09-30 23:22:32,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-09-30 23:22:32,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-09-30 23:22:32,264 INFO L87 Difference]: Start difference. First operand 239 states and 240 transitions. Second operand 61 states. [2018-09-30 23:22:32,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:22:32,626 INFO L93 Difference]: Finished difference Result 363 states and 366 transitions. [2018-09-30 23:22:32,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-09-30 23:22:32,626 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 238 [2018-09-30 23:22:32,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:22:32,628 INFO L225 Difference]: With dead ends: 363 [2018-09-30 23:22:32,628 INFO L226 Difference]: Without dead ends: 243 [2018-09-30 23:22:32,629 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-09-30 23:22:32,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-09-30 23:22:32,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-09-30 23:22:32,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-09-30 23:22:32,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 244 transitions. [2018-09-30 23:22:32,633 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 244 transitions. Word has length 238 [2018-09-30 23:22:32,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:22:32,633 INFO L480 AbstractCegarLoop]: Abstraction has 243 states and 244 transitions. [2018-09-30 23:22:32,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-09-30 23:22:32,633 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 244 transitions. [2018-09-30 23:22:32,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-09-30 23:22:32,634 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:22:32,634 INFO L375 BasicCegarLoop]: trace histogram [60, 60, 59, 59, 1, 1, 1, 1] [2018-09-30 23:22:32,634 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:22:32,634 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:22:32,635 INFO L82 PathProgramCache]: Analyzing trace with hash 153156231, now seen corresponding path program 59 times [2018-09-30 23:22:32,635 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:22:32,635 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:22:32,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:32,635 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:22:32,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:22:34,286 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 3540 trivial. 0 not checked. [2018-09-30 23:22:34,286 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:22:34,286 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:22:34,294 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 23:22:36,851 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2018-09-30 23:22:36,852 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:22:36,858 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:22:36,903 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 3540 trivial. 0 not checked. [2018-09-30 23:22:36,928 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:22:36,928 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-09-30 23:22:36,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-09-30 23:22:36,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-09-30 23:22:36,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-09-30 23:22:36,930 INFO L87 Difference]: Start difference. First operand 243 states and 244 transitions. Second operand 62 states. [2018-09-30 23:22:37,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:22:37,403 INFO L93 Difference]: Finished difference Result 369 states and 372 transitions. [2018-09-30 23:22:37,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-09-30 23:22:37,403 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 242 [2018-09-30 23:22:37,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:22:37,405 INFO L225 Difference]: With dead ends: 369 [2018-09-30 23:22:37,405 INFO L226 Difference]: Without dead ends: 247 [2018-09-30 23:22:37,406 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-09-30 23:22:37,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-09-30 23:22:37,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-09-30 23:22:37,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-09-30 23:22:37,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 248 transitions. [2018-09-30 23:22:37,411 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 248 transitions. Word has length 242 [2018-09-30 23:22:37,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:22:37,411 INFO L480 AbstractCegarLoop]: Abstraction has 247 states and 248 transitions. [2018-09-30 23:22:37,411 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-09-30 23:22:37,412 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 248 transitions. [2018-09-30 23:22:37,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-09-30 23:22:37,413 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:22:37,413 INFO L375 BasicCegarLoop]: trace histogram [61, 61, 60, 60, 1, 1, 1, 1] [2018-09-30 23:22:37,413 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:22:37,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:22:37,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1155486981, now seen corresponding path program 60 times [2018-09-30 23:22:37,414 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:22:37,414 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:22:37,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:37,414 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:22:37,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:22:38,878 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 3660 trivial. 0 not checked. [2018-09-30 23:22:38,879 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:22:38,879 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:22:38,886 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 23:22:40,393 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-09-30 23:22:40,393 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:22:40,403 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:22:40,457 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 3660 trivial. 0 not checked. [2018-09-30 23:22:40,490 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:22:40,490 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-09-30 23:22:40,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-09-30 23:22:40,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-09-30 23:22:40,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-09-30 23:22:40,492 INFO L87 Difference]: Start difference. First operand 247 states and 248 transitions. Second operand 63 states. [2018-09-30 23:22:40,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:22:40,885 INFO L93 Difference]: Finished difference Result 375 states and 378 transitions. [2018-09-30 23:22:40,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-09-30 23:22:40,885 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 246 [2018-09-30 23:22:40,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:22:40,887 INFO L225 Difference]: With dead ends: 375 [2018-09-30 23:22:40,887 INFO L226 Difference]: Without dead ends: 251 [2018-09-30 23:22:40,888 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-09-30 23:22:40,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-09-30 23:22:40,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-09-30 23:22:40,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-09-30 23:22:40,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 252 transitions. [2018-09-30 23:22:40,892 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 252 transitions. Word has length 246 [2018-09-30 23:22:40,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:22:40,892 INFO L480 AbstractCegarLoop]: Abstraction has 251 states and 252 transitions. [2018-09-30 23:22:40,892 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-09-30 23:22:40,893 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 252 transitions. [2018-09-30 23:22:40,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-09-30 23:22:40,893 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:22:40,894 INFO L375 BasicCegarLoop]: trace histogram [62, 62, 61, 61, 1, 1, 1, 1] [2018-09-30 23:22:40,894 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:22:40,894 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:22:40,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1549181295, now seen corresponding path program 61 times [2018-09-30 23:22:40,894 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:22:40,894 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:22:40,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:40,895 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:22:40,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:22:42,482 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 3782 trivial. 0 not checked. [2018-09-30 23:22:42,483 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:22:42,483 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:22:42,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:22:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:22:42,595 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:22:42,641 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 3782 trivial. 0 not checked. [2018-09-30 23:22:42,661 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:22:42,661 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-09-30 23:22:42,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-09-30 23:22:42,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-09-30 23:22:42,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-09-30 23:22:42,663 INFO L87 Difference]: Start difference. First operand 251 states and 252 transitions. Second operand 64 states. [2018-09-30 23:22:43,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:22:43,015 INFO L93 Difference]: Finished difference Result 381 states and 384 transitions. [2018-09-30 23:22:43,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-09-30 23:22:43,015 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 250 [2018-09-30 23:22:43,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:22:43,017 INFO L225 Difference]: With dead ends: 381 [2018-09-30 23:22:43,017 INFO L226 Difference]: Without dead ends: 255 [2018-09-30 23:22:43,018 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-09-30 23:22:43,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-09-30 23:22:43,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-09-30 23:22:43,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-09-30 23:22:43,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 256 transitions. [2018-09-30 23:22:43,023 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 256 transitions. Word has length 250 [2018-09-30 23:22:43,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:22:43,023 INFO L480 AbstractCegarLoop]: Abstraction has 255 states and 256 transitions. [2018-09-30 23:22:43,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-09-30 23:22:43,023 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 256 transitions. [2018-09-30 23:22:43,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-09-30 23:22:43,024 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:22:43,024 INFO L375 BasicCegarLoop]: trace histogram [63, 63, 62, 62, 1, 1, 1, 1] [2018-09-30 23:22:43,024 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:22:43,024 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:22:43,024 INFO L82 PathProgramCache]: Analyzing trace with hash -540549661, now seen corresponding path program 62 times [2018-09-30 23:22:43,025 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:22:43,025 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:22:43,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:43,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:22:43,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:22:44,565 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 3906 trivial. 0 not checked. [2018-09-30 23:22:44,565 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:22:44,565 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:22:44,574 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 23:22:44,677 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 23:22:44,678 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:22:44,681 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:22:44,737 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 3906 trivial. 0 not checked. [2018-09-30 23:22:44,761 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:22:44,761 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-09-30 23:22:44,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-09-30 23:22:44,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-09-30 23:22:44,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-09-30 23:22:44,762 INFO L87 Difference]: Start difference. First operand 255 states and 256 transitions. Second operand 65 states. [2018-09-30 23:22:45,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:22:45,296 INFO L93 Difference]: Finished difference Result 387 states and 390 transitions. [2018-09-30 23:22:45,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-09-30 23:22:45,297 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 254 [2018-09-30 23:22:45,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:22:45,298 INFO L225 Difference]: With dead ends: 387 [2018-09-30 23:22:45,298 INFO L226 Difference]: Without dead ends: 259 [2018-09-30 23:22:45,299 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-09-30 23:22:45,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-09-30 23:22:45,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-09-30 23:22:45,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-09-30 23:22:45,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 260 transitions. [2018-09-30 23:22:45,303 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 260 transitions. Word has length 254 [2018-09-30 23:22:45,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:22:45,304 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 260 transitions. [2018-09-30 23:22:45,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-09-30 23:22:45,304 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 260 transitions. [2018-09-30 23:22:45,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-09-30 23:22:45,305 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:22:45,305 INFO L375 BasicCegarLoop]: trace histogram [64, 64, 63, 63, 1, 1, 1, 1] [2018-09-30 23:22:45,305 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:22:45,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:22:45,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1476829097, now seen corresponding path program 63 times [2018-09-30 23:22:45,305 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:22:45,305 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:22:45,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:45,306 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:22:45,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:45,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:22:47,286 INFO L134 CoverageAnalysis]: Checked inductivity of 8064 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 4032 trivial. 0 not checked. [2018-09-30 23:22:47,287 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:22:47,287 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:22:47,297 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 23:22:49,709 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2018-09-30 23:22:49,709 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:22:49,714 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:22:49,749 INFO L134 CoverageAnalysis]: Checked inductivity of 8064 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 4032 trivial. 0 not checked. [2018-09-30 23:22:49,772 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:22:49,773 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-09-30 23:22:49,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-09-30 23:22:49,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-09-30 23:22:49,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-09-30 23:22:49,774 INFO L87 Difference]: Start difference. First operand 259 states and 260 transitions. Second operand 66 states. [2018-09-30 23:22:50,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:22:50,334 INFO L93 Difference]: Finished difference Result 393 states and 396 transitions. [2018-09-30 23:22:50,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-09-30 23:22:50,334 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 258 [2018-09-30 23:22:50,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:22:50,335 INFO L225 Difference]: With dead ends: 393 [2018-09-30 23:22:50,335 INFO L226 Difference]: Without dead ends: 263 [2018-09-30 23:22:50,336 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-09-30 23:22:50,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-09-30 23:22:50,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2018-09-30 23:22:50,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-09-30 23:22:50,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 264 transitions. [2018-09-30 23:22:50,342 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 264 transitions. Word has length 258 [2018-09-30 23:22:50,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:22:50,342 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 264 transitions. [2018-09-30 23:22:50,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-09-30 23:22:50,342 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 264 transitions. [2018-09-30 23:22:50,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-09-30 23:22:50,344 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:22:50,344 INFO L375 BasicCegarLoop]: trace histogram [65, 65, 64, 64, 1, 1, 1, 1] [2018-09-30 23:22:50,344 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:22:50,344 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:22:50,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1190144203, now seen corresponding path program 64 times [2018-09-30 23:22:50,345 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:22:50,345 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:22:50,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:50,345 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:22:50,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:22:52,264 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 4160 trivial. 0 not checked. [2018-09-30 23:22:52,265 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:22:52,265 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:22:52,275 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 23:22:52,381 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 23:22:52,381 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:22:52,385 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:22:52,436 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 4160 trivial. 0 not checked. [2018-09-30 23:22:52,456 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:22:52,456 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-09-30 23:22:52,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-09-30 23:22:52,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-09-30 23:22:52,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-09-30 23:22:52,457 INFO L87 Difference]: Start difference. First operand 263 states and 264 transitions. Second operand 67 states. [2018-09-30 23:22:52,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:22:52,965 INFO L93 Difference]: Finished difference Result 399 states and 402 transitions. [2018-09-30 23:22:52,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-09-30 23:22:52,966 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 262 [2018-09-30 23:22:52,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:22:52,967 INFO L225 Difference]: With dead ends: 399 [2018-09-30 23:22:52,967 INFO L226 Difference]: Without dead ends: 267 [2018-09-30 23:22:52,968 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-09-30 23:22:52,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-09-30 23:22:52,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2018-09-30 23:22:52,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-09-30 23:22:52,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 268 transitions. [2018-09-30 23:22:52,973 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 268 transitions. Word has length 262 [2018-09-30 23:22:52,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:22:52,974 INFO L480 AbstractCegarLoop]: Abstraction has 267 states and 268 transitions. [2018-09-30 23:22:52,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-09-30 23:22:52,974 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 268 transitions. [2018-09-30 23:22:52,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-09-30 23:22:52,975 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:22:52,975 INFO L375 BasicCegarLoop]: trace histogram [66, 66, 65, 65, 1, 1, 1, 1] [2018-09-30 23:22:52,976 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:22:52,976 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:22:52,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1043412799, now seen corresponding path program 65 times [2018-09-30 23:22:52,976 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:22:52,976 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:22:52,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:52,977 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:22:52,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:53,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:22:54,659 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 4290 trivial. 0 not checked. [2018-09-30 23:22:54,659 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:22:54,659 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:22:54,666 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 23:22:58,065 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2018-09-30 23:22:58,065 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:22:58,073 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:22:58,129 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 4290 trivial. 0 not checked. [2018-09-30 23:22:58,156 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:22:58,156 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-09-30 23:22:58,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-09-30 23:22:58,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-09-30 23:22:58,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-09-30 23:22:58,157 INFO L87 Difference]: Start difference. First operand 267 states and 268 transitions. Second operand 68 states. [2018-09-30 23:22:58,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:22:58,701 INFO L93 Difference]: Finished difference Result 405 states and 408 transitions. [2018-09-30 23:22:58,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-09-30 23:22:58,701 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 266 [2018-09-30 23:22:58,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:22:58,703 INFO L225 Difference]: With dead ends: 405 [2018-09-30 23:22:58,703 INFO L226 Difference]: Without dead ends: 271 [2018-09-30 23:22:58,704 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-09-30 23:22:58,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-09-30 23:22:58,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-09-30 23:22:58,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-09-30 23:22:58,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 272 transitions. [2018-09-30 23:22:58,710 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 272 transitions. Word has length 266 [2018-09-30 23:22:58,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:22:58,710 INFO L480 AbstractCegarLoop]: Abstraction has 271 states and 272 transitions. [2018-09-30 23:22:58,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-09-30 23:22:58,710 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 272 transitions. [2018-09-30 23:22:58,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-09-30 23:22:58,712 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:22:58,712 INFO L375 BasicCegarLoop]: trace histogram [67, 67, 66, 66, 1, 1, 1, 1] [2018-09-30 23:22:58,712 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:22:58,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:22:58,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1094612045, now seen corresponding path program 66 times [2018-09-30 23:22:58,713 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:22:58,713 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:22:58,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:58,713 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:22:58,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:22:58,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:23:00,413 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 4422 trivial. 0 not checked. [2018-09-30 23:23:00,414 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:23:00,414 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:23:00,422 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 23:23:02,201 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-09-30 23:23:02,201 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:23:02,210 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:23:02,273 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 4422 trivial. 0 not checked. [2018-09-30 23:23:02,297 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:23:02,297 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-09-30 23:23:02,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-09-30 23:23:02,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-09-30 23:23:02,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-09-30 23:23:02,299 INFO L87 Difference]: Start difference. First operand 271 states and 272 transitions. Second operand 69 states. [2018-09-30 23:23:02,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:23:02,881 INFO L93 Difference]: Finished difference Result 411 states and 414 transitions. [2018-09-30 23:23:02,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-09-30 23:23:02,881 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 270 [2018-09-30 23:23:02,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:23:02,883 INFO L225 Difference]: With dead ends: 411 [2018-09-30 23:23:02,883 INFO L226 Difference]: Without dead ends: 275 [2018-09-30 23:23:02,884 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-09-30 23:23:02,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-09-30 23:23:02,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2018-09-30 23:23:02,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-09-30 23:23:02,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 276 transitions. [2018-09-30 23:23:02,888 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 276 transitions. Word has length 270 [2018-09-30 23:23:02,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:23:02,888 INFO L480 AbstractCegarLoop]: Abstraction has 275 states and 276 transitions. [2018-09-30 23:23:02,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-09-30 23:23:02,889 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 276 transitions. [2018-09-30 23:23:02,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-09-30 23:23:02,890 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:23:02,890 INFO L375 BasicCegarLoop]: trace histogram [68, 68, 67, 67, 1, 1, 1, 1] [2018-09-30 23:23:02,890 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:23:02,890 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:23:02,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1764107815, now seen corresponding path program 67 times [2018-09-30 23:23:02,891 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:23:02,891 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:23:02,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:23:02,891 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:23:02,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:23:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:23:04,631 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 4556 trivial. 0 not checked. [2018-09-30 23:23:04,632 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:23:04,632 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:23:04,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:23:04,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:23:04,757 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:23:04,804 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 4556 trivial. 0 not checked. [2018-09-30 23:23:04,824 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:23:04,824 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-09-30 23:23:04,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-09-30 23:23:04,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-09-30 23:23:04,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-09-30 23:23:04,826 INFO L87 Difference]: Start difference. First operand 275 states and 276 transitions. Second operand 70 states. [2018-09-30 23:23:05,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:23:05,511 INFO L93 Difference]: Finished difference Result 417 states and 420 transitions. [2018-09-30 23:23:05,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-09-30 23:23:05,511 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 274 [2018-09-30 23:23:05,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:23:05,513 INFO L225 Difference]: With dead ends: 417 [2018-09-30 23:23:05,513 INFO L226 Difference]: Without dead ends: 279 [2018-09-30 23:23:05,514 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-09-30 23:23:05,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-09-30 23:23:05,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2018-09-30 23:23:05,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-09-30 23:23:05,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 280 transitions. [2018-09-30 23:23:05,519 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 280 transitions. Word has length 274 [2018-09-30 23:23:05,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:23:05,519 INFO L480 AbstractCegarLoop]: Abstraction has 279 states and 280 transitions. [2018-09-30 23:23:05,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-09-30 23:23:05,520 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 280 transitions. [2018-09-30 23:23:05,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-09-30 23:23:05,521 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:23:05,521 INFO L375 BasicCegarLoop]: trace histogram [69, 69, 68, 68, 1, 1, 1, 1] [2018-09-30 23:23:05,521 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:23:05,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:23:05,522 INFO L82 PathProgramCache]: Analyzing trace with hash 224659099, now seen corresponding path program 68 times [2018-09-30 23:23:05,522 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:23:05,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:23:05,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:23:05,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:23:05,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:23:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:23:07,691 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 4692 trivial. 0 not checked. [2018-09-30 23:23:07,691 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:23:07,691 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:23:07,699 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 23:23:07,811 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 23:23:07,811 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:23:07,815 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:23:07,859 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 4692 trivial. 0 not checked. [2018-09-30 23:23:07,879 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:23:07,879 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-09-30 23:23:07,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-09-30 23:23:07,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-09-30 23:23:07,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-09-30 23:23:07,880 INFO L87 Difference]: Start difference. First operand 279 states and 280 transitions. Second operand 71 states. [2018-09-30 23:23:08,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:23:08,359 INFO L93 Difference]: Finished difference Result 423 states and 426 transitions. [2018-09-30 23:23:08,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-09-30 23:23:08,360 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 278 [2018-09-30 23:23:08,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:23:08,361 INFO L225 Difference]: With dead ends: 423 [2018-09-30 23:23:08,361 INFO L226 Difference]: Without dead ends: 283 [2018-09-30 23:23:08,362 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-09-30 23:23:08,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-09-30 23:23:08,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2018-09-30 23:23:08,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-09-30 23:23:08,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 284 transitions. [2018-09-30 23:23:08,367 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 284 transitions. Word has length 278 [2018-09-30 23:23:08,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:23:08,367 INFO L480 AbstractCegarLoop]: Abstraction has 283 states and 284 transitions. [2018-09-30 23:23:08,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-09-30 23:23:08,367 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 284 transitions. [2018-09-30 23:23:08,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-09-30 23:23:08,368 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:23:08,368 INFO L375 BasicCegarLoop]: trace histogram [70, 70, 69, 69, 1, 1, 1, 1] [2018-09-30 23:23:08,368 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:23:08,368 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:23:08,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1795173647, now seen corresponding path program 69 times [2018-09-30 23:23:08,369 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:23:08,369 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:23:08,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:23:08,369 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:23:08,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:23:08,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:23:10,215 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 4830 trivial. 0 not checked. [2018-09-30 23:23:10,215 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:23:10,216 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:23:10,223 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 23:23:13,587 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-09-30 23:23:13,588 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:23:13,595 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:23:13,658 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 4830 trivial. 0 not checked. [2018-09-30 23:23:13,696 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:23:13,697 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-09-30 23:23:13,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-09-30 23:23:13,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-09-30 23:23:13,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-09-30 23:23:13,699 INFO L87 Difference]: Start difference. First operand 283 states and 284 transitions. Second operand 72 states. [2018-09-30 23:23:14,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:23:14,386 INFO L93 Difference]: Finished difference Result 429 states and 432 transitions. [2018-09-30 23:23:14,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-09-30 23:23:14,386 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 282 [2018-09-30 23:23:14,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:23:14,388 INFO L225 Difference]: With dead ends: 429 [2018-09-30 23:23:14,388 INFO L226 Difference]: Without dead ends: 287 [2018-09-30 23:23:14,389 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-09-30 23:23:14,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-09-30 23:23:14,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2018-09-30 23:23:14,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-09-30 23:23:14,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 288 transitions. [2018-09-30 23:23:14,393 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 288 transitions. Word has length 282 [2018-09-30 23:23:14,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:23:14,394 INFO L480 AbstractCegarLoop]: Abstraction has 287 states and 288 transitions. [2018-09-30 23:23:14,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-09-30 23:23:14,394 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 288 transitions. [2018-09-30 23:23:14,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-09-30 23:23:14,395 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:23:14,395 INFO L375 BasicCegarLoop]: trace histogram [71, 71, 70, 70, 1, 1, 1, 1] [2018-09-30 23:23:14,395 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:23:14,395 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:23:14,395 INFO L82 PathProgramCache]: Analyzing trace with hash -251684477, now seen corresponding path program 70 times [2018-09-30 23:23:14,395 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:23:14,395 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:23:14,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:23:14,396 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:23:14,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:23:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:23:16,469 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 4970 trivial. 0 not checked. [2018-09-30 23:23:16,470 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:23:16,470 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:23:16,477 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 23:23:16,591 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 23:23:16,591 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:23:16,595 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:23:16,651 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 4970 trivial. 0 not checked. [2018-09-30 23:23:16,672 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:23:16,673 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-09-30 23:23:16,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-09-30 23:23:16,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-09-30 23:23:16,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-09-30 23:23:16,674 INFO L87 Difference]: Start difference. First operand 287 states and 288 transitions. Second operand 73 states. [2018-09-30 23:23:17,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:23:17,403 INFO L93 Difference]: Finished difference Result 435 states and 438 transitions. [2018-09-30 23:23:17,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-09-30 23:23:17,404 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 286 [2018-09-30 23:23:17,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:23:17,406 INFO L225 Difference]: With dead ends: 435 [2018-09-30 23:23:17,406 INFO L226 Difference]: Without dead ends: 291 [2018-09-30 23:23:17,406 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-09-30 23:23:17,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-09-30 23:23:17,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2018-09-30 23:23:17,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-09-30 23:23:17,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 292 transitions. [2018-09-30 23:23:17,411 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 292 transitions. Word has length 286 [2018-09-30 23:23:17,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:23:17,411 INFO L480 AbstractCegarLoop]: Abstraction has 291 states and 292 transitions. [2018-09-30 23:23:17,411 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-09-30 23:23:17,411 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 292 transitions. [2018-09-30 23:23:17,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-09-30 23:23:17,413 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:23:17,413 INFO L375 BasicCegarLoop]: trace histogram [72, 72, 71, 71, 1, 1, 1, 1] [2018-09-30 23:23:17,413 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:23:17,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:23:17,413 INFO L82 PathProgramCache]: Analyzing trace with hash 2112310263, now seen corresponding path program 71 times [2018-09-30 23:23:17,414 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:23:17,414 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:23:17,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:23:17,414 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:23:17,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:23:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:23:19,591 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 5112 trivial. 0 not checked. [2018-09-30 23:23:19,591 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:23:19,591 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:23:19,599 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 23:23:24,911 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2018-09-30 23:23:24,912 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:23:24,923 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:23:24,984 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 5112 trivial. 0 not checked. [2018-09-30 23:23:25,014 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:23:25,014 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-09-30 23:23:25,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-09-30 23:23:25,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-09-30 23:23:25,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-09-30 23:23:25,015 INFO L87 Difference]: Start difference. First operand 291 states and 292 transitions. Second operand 74 states. [2018-09-30 23:23:25,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:23:25,508 INFO L93 Difference]: Finished difference Result 441 states and 444 transitions. [2018-09-30 23:23:25,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-09-30 23:23:25,508 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 290 [2018-09-30 23:23:25,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:23:25,510 INFO L225 Difference]: With dead ends: 441 [2018-09-30 23:23:25,510 INFO L226 Difference]: Without dead ends: 295 [2018-09-30 23:23:25,511 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-09-30 23:23:25,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-09-30 23:23:25,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2018-09-30 23:23:25,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-09-30 23:23:25,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 296 transitions. [2018-09-30 23:23:25,516 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 296 transitions. Word has length 290 [2018-09-30 23:23:25,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:23:25,517 INFO L480 AbstractCegarLoop]: Abstraction has 295 states and 296 transitions. [2018-09-30 23:23:25,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-09-30 23:23:25,517 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 296 transitions. [2018-09-30 23:23:25,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-09-30 23:23:25,518 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:23:25,519 INFO L375 BasicCegarLoop]: trace histogram [73, 73, 72, 72, 1, 1, 1, 1] [2018-09-30 23:23:25,519 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:23:25,519 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:23:25,519 INFO L82 PathProgramCache]: Analyzing trace with hash 532431979, now seen corresponding path program 72 times [2018-09-30 23:23:25,519 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:23:25,520 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:23:25,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:23:25,520 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:23:25,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:23:25,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:23:27,883 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 5256 trivial. 0 not checked. [2018-09-30 23:23:27,883 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:23:27,883 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:23:27,890 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 23:23:30,672 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-09-30 23:23:30,672 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:23:30,686 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:23:30,732 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 5256 trivial. 0 not checked. [2018-09-30 23:23:30,758 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:23:30,758 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-09-30 23:23:30,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-09-30 23:23:30,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-09-30 23:23:30,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-09-30 23:23:30,760 INFO L87 Difference]: Start difference. First operand 295 states and 296 transitions. Second operand 75 states. [2018-09-30 23:23:31,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:23:31,496 INFO L93 Difference]: Finished difference Result 447 states and 450 transitions. [2018-09-30 23:23:31,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-09-30 23:23:31,496 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 294 [2018-09-30 23:23:31,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:23:31,498 INFO L225 Difference]: With dead ends: 447 [2018-09-30 23:23:31,498 INFO L226 Difference]: Without dead ends: 299 [2018-09-30 23:23:31,499 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-09-30 23:23:31,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-09-30 23:23:31,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2018-09-30 23:23:31,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-09-30 23:23:31,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 300 transitions. [2018-09-30 23:23:31,504 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 300 transitions. Word has length 294 [2018-09-30 23:23:31,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:23:31,504 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 300 transitions. [2018-09-30 23:23:31,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-09-30 23:23:31,504 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 300 transitions. [2018-09-30 23:23:31,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-09-30 23:23:31,506 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:23:31,506 INFO L375 BasicCegarLoop]: trace histogram [74, 74, 73, 73, 1, 1, 1, 1] [2018-09-30 23:23:31,506 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:23:31,506 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:23:31,507 INFO L82 PathProgramCache]: Analyzing trace with hash -737967393, now seen corresponding path program 73 times [2018-09-30 23:23:31,507 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:23:31,507 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:23:31,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:23:31,508 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:23:31,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:23:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:23:33,793 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 5402 trivial. 0 not checked. [2018-09-30 23:23:33,794 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:23:33,794 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:23:33,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:23:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:23:33,928 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:23:33,986 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 5402 trivial. 0 not checked. [2018-09-30 23:23:34,007 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:23:34,007 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-09-30 23:23:34,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-09-30 23:23:34,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-09-30 23:23:34,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-09-30 23:23:34,008 INFO L87 Difference]: Start difference. First operand 299 states and 300 transitions. Second operand 76 states. [2018-09-30 23:23:34,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:23:34,647 INFO L93 Difference]: Finished difference Result 453 states and 456 transitions. [2018-09-30 23:23:34,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-09-30 23:23:34,647 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 298 [2018-09-30 23:23:34,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:23:34,649 INFO L225 Difference]: With dead ends: 453 [2018-09-30 23:23:34,649 INFO L226 Difference]: Without dead ends: 303 [2018-09-30 23:23:34,650 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-09-30 23:23:34,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-09-30 23:23:34,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2018-09-30 23:23:34,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-09-30 23:23:34,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 304 transitions. [2018-09-30 23:23:34,655 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 304 transitions. Word has length 298 [2018-09-30 23:23:34,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:23:34,655 INFO L480 AbstractCegarLoop]: Abstraction has 303 states and 304 transitions. [2018-09-30 23:23:34,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-09-30 23:23:34,655 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 304 transitions. [2018-09-30 23:23:34,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-09-30 23:23:34,656 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:23:34,656 INFO L375 BasicCegarLoop]: trace histogram [75, 75, 74, 74, 1, 1, 1, 1] [2018-09-30 23:23:34,656 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:23:34,656 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:23:34,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1203898195, now seen corresponding path program 74 times [2018-09-30 23:23:34,657 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:23:34,657 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:23:34,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:23:34,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:23:34,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:23:34,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:23:37,093 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 5550 trivial. 0 not checked. [2018-09-30 23:23:37,093 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:23:37,093 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:23:37,101 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 23:23:37,223 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 23:23:37,224 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:23:37,228 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:23:37,284 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 5550 trivial. 0 not checked. [2018-09-30 23:23:37,304 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:23:37,304 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-09-30 23:23:37,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-09-30 23:23:37,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-09-30 23:23:37,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-09-30 23:23:37,306 INFO L87 Difference]: Start difference. First operand 303 states and 304 transitions. Second operand 77 states. [2018-09-30 23:23:38,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:23:38,081 INFO L93 Difference]: Finished difference Result 459 states and 462 transitions. [2018-09-30 23:23:38,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-09-30 23:23:38,081 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 302 [2018-09-30 23:23:38,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:23:38,083 INFO L225 Difference]: With dead ends: 459 [2018-09-30 23:23:38,083 INFO L226 Difference]: Without dead ends: 307 [2018-09-30 23:23:38,084 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-09-30 23:23:38,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-09-30 23:23:38,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2018-09-30 23:23:38,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-09-30 23:23:38,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 308 transitions. [2018-09-30 23:23:38,089 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 308 transitions. Word has length 302 [2018-09-30 23:23:38,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:23:38,089 INFO L480 AbstractCegarLoop]: Abstraction has 307 states and 308 transitions. [2018-09-30 23:23:38,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-09-30 23:23:38,089 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 308 transitions. [2018-09-30 23:23:38,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-09-30 23:23:38,090 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:23:38,091 INFO L375 BasicCegarLoop]: trace histogram [76, 76, 75, 75, 1, 1, 1, 1] [2018-09-30 23:23:38,091 INFO L423 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:23:38,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:23:38,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1753427513, now seen corresponding path program 75 times [2018-09-30 23:23:38,091 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:23:38,092 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:23:38,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:23:38,092 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:23:38,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:23:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:23:40,307 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 5700 trivial. 0 not checked. [2018-09-30 23:23:40,307 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:23:40,307 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:23:40,314 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 23:23:45,004 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2018-09-30 23:23:45,004 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:23:45,012 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:23:45,068 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 5700 trivial. 0 not checked. [2018-09-30 23:23:45,093 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:23:45,093 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-09-30 23:23:45,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-09-30 23:23:45,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-09-30 23:23:45,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-09-30 23:23:45,094 INFO L87 Difference]: Start difference. First operand 307 states and 308 transitions. Second operand 78 states. [2018-09-30 23:23:45,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:23:45,839 INFO L93 Difference]: Finished difference Result 465 states and 468 transitions. [2018-09-30 23:23:45,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-09-30 23:23:45,839 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 306 [2018-09-30 23:23:45,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:23:45,841 INFO L225 Difference]: With dead ends: 465 [2018-09-30 23:23:45,841 INFO L226 Difference]: Without dead ends: 311 [2018-09-30 23:23:45,842 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-09-30 23:23:45,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-09-30 23:23:45,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2018-09-30 23:23:45,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2018-09-30 23:23:45,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 312 transitions. [2018-09-30 23:23:45,847 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 312 transitions. Word has length 306 [2018-09-30 23:23:45,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:23:45,847 INFO L480 AbstractCegarLoop]: Abstraction has 311 states and 312 transitions. [2018-09-30 23:23:45,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-09-30 23:23:45,848 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 312 transitions. [2018-09-30 23:23:45,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-09-30 23:23:45,849 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:23:45,849 INFO L375 BasicCegarLoop]: trace histogram [77, 77, 76, 76, 1, 1, 1, 1] [2018-09-30 23:23:45,850 INFO L423 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:23:45,850 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:23:45,850 INFO L82 PathProgramCache]: Analyzing trace with hash 255386171, now seen corresponding path program 76 times [2018-09-30 23:23:45,850 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:23:45,850 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:23:45,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:23:45,851 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:23:45,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:23:45,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:23:48,320 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 5852 trivial. 0 not checked. [2018-09-30 23:23:48,320 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:23:48,321 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:23:48,329 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 23:23:48,450 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 23:23:48,450 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:23:48,455 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:23:48,514 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 5852 trivial. 0 not checked. [2018-09-30 23:23:48,534 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:23:48,535 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-09-30 23:23:48,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-09-30 23:23:48,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-09-30 23:23:48,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-09-30 23:23:48,536 INFO L87 Difference]: Start difference. First operand 311 states and 312 transitions. Second operand 79 states. [2018-09-30 23:23:49,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:23:49,350 INFO L93 Difference]: Finished difference Result 471 states and 474 transitions. [2018-09-30 23:23:49,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-09-30 23:23:49,351 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 310 [2018-09-30 23:23:49,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:23:49,352 INFO L225 Difference]: With dead ends: 471 [2018-09-30 23:23:49,353 INFO L226 Difference]: Without dead ends: 315 [2018-09-30 23:23:49,353 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-09-30 23:23:49,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-09-30 23:23:49,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2018-09-30 23:23:49,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-09-30 23:23:49,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 316 transitions. [2018-09-30 23:23:49,358 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 316 transitions. Word has length 310 [2018-09-30 23:23:49,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:23:49,358 INFO L480 AbstractCegarLoop]: Abstraction has 315 states and 316 transitions. [2018-09-30 23:23:49,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-09-30 23:23:49,358 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 316 transitions. [2018-09-30 23:23:49,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-09-30 23:23:49,359 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:23:49,359 INFO L375 BasicCegarLoop]: trace histogram [78, 78, 77, 77, 1, 1, 1, 1] [2018-09-30 23:23:49,360 INFO L423 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:23:49,360 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:23:49,360 INFO L82 PathProgramCache]: Analyzing trace with hash -361023313, now seen corresponding path program 77 times [2018-09-30 23:23:49,360 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:23:49,360 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:23:49,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:23:49,361 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:23:49,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:23:49,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:23:51,621 INFO L134 CoverageAnalysis]: Checked inductivity of 12012 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 6006 trivial. 0 not checked. [2018-09-30 23:23:51,621 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:23:51,621 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:23:51,628 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 23:24:00,913 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2018-09-30 23:24:00,914 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:24:00,925 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:24:00,985 INFO L134 CoverageAnalysis]: Checked inductivity of 12012 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 6006 trivial. 0 not checked. [2018-09-30 23:24:01,013 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:24:01,014 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-09-30 23:24:01,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-09-30 23:24:01,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-09-30 23:24:01,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-09-30 23:24:01,015 INFO L87 Difference]: Start difference. First operand 315 states and 316 transitions. Second operand 80 states. [2018-09-30 23:24:01,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:24:01,849 INFO L93 Difference]: Finished difference Result 477 states and 480 transitions. [2018-09-30 23:24:01,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-09-30 23:24:01,849 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 314 [2018-09-30 23:24:01,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:24:01,851 INFO L225 Difference]: With dead ends: 477 [2018-09-30 23:24:01,851 INFO L226 Difference]: Without dead ends: 319 [2018-09-30 23:24:01,852 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-09-30 23:24:01,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-09-30 23:24:01,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-09-30 23:24:01,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-09-30 23:24:01,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 320 transitions. [2018-09-30 23:24:01,857 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 320 transitions. Word has length 314 [2018-09-30 23:24:01,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:24:01,857 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 320 transitions. [2018-09-30 23:24:01,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-09-30 23:24:01,857 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 320 transitions. [2018-09-30 23:24:01,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-09-30 23:24:01,858 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:24:01,859 INFO L375 BasicCegarLoop]: trace histogram [79, 79, 78, 78, 1, 1, 1, 1] [2018-09-30 23:24:01,859 INFO L423 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:24:01,859 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:24:01,859 INFO L82 PathProgramCache]: Analyzing trace with hash 340317475, now seen corresponding path program 78 times [2018-09-30 23:24:01,859 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:24:01,859 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:24:01,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:24:01,860 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:24:01,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:24:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:24:04,438 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 6162 trivial. 0 not checked. [2018-09-30 23:24:04,438 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:24:04,438 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:24:04,445 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 23:24:07,918 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2018-09-30 23:24:07,918 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:24:07,929 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:24:07,986 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 6162 trivial. 0 not checked. [2018-09-30 23:24:08,012 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:24:08,012 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-09-30 23:24:08,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-09-30 23:24:08,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-09-30 23:24:08,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-09-30 23:24:08,014 INFO L87 Difference]: Start difference. First operand 319 states and 320 transitions. Second operand 81 states. [2018-09-30 23:24:08,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:24:08,711 INFO L93 Difference]: Finished difference Result 483 states and 486 transitions. [2018-09-30 23:24:08,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-09-30 23:24:08,711 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 318 [2018-09-30 23:24:08,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:24:08,712 INFO L225 Difference]: With dead ends: 483 [2018-09-30 23:24:08,712 INFO L226 Difference]: Without dead ends: 323 [2018-09-30 23:24:08,713 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-09-30 23:24:08,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-09-30 23:24:08,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2018-09-30 23:24:08,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-09-30 23:24:08,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 324 transitions. [2018-09-30 23:24:08,718 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 324 transitions. Word has length 318 [2018-09-30 23:24:08,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:24:08,718 INFO L480 AbstractCegarLoop]: Abstraction has 323 states and 324 transitions. [2018-09-30 23:24:08,718 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-09-30 23:24:08,718 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 324 transitions. [2018-09-30 23:24:08,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-09-30 23:24:08,720 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:24:08,720 INFO L375 BasicCegarLoop]: trace histogram [80, 80, 79, 79, 1, 1, 1, 1] [2018-09-30 23:24:08,720 INFO L423 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:24:08,720 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:24:08,720 INFO L82 PathProgramCache]: Analyzing trace with hash -416893033, now seen corresponding path program 79 times [2018-09-30 23:24:08,721 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:24:08,721 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:24:08,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:24:08,721 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:24:08,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:24:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:24:11,119 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 6320 trivial. 0 not checked. [2018-09-30 23:24:11,119 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:24:11,119 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 [2018-09-30 23:24:11,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:24:11,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:24:11,262 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:24:11,316 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 6320 trivial. 0 not checked. [2018-09-30 23:24:11,336 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:24:11,337 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-09-30 23:24:11,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-09-30 23:24:11,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-09-30 23:24:11,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-09-30 23:24:11,338 INFO L87 Difference]: Start difference. First operand 323 states and 324 transitions. Second operand 82 states. [2018-09-30 23:24:12,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:24:12,279 INFO L93 Difference]: Finished difference Result 489 states and 492 transitions. [2018-09-30 23:24:12,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-09-30 23:24:12,279 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 322 [2018-09-30 23:24:12,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:24:12,281 INFO L225 Difference]: With dead ends: 489 [2018-09-30 23:24:12,281 INFO L226 Difference]: Without dead ends: 327 [2018-09-30 23:24:12,282 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-09-30 23:24:12,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-09-30 23:24:12,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2018-09-30 23:24:12,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-09-30 23:24:12,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 328 transitions. [2018-09-30 23:24:12,287 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 328 transitions. Word has length 322 [2018-09-30 23:24:12,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:24:12,287 INFO L480 AbstractCegarLoop]: Abstraction has 327 states and 328 transitions. [2018-09-30 23:24:12,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-09-30 23:24:12,287 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 328 transitions. [2018-09-30 23:24:12,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-09-30 23:24:12,288 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:24:12,288 INFO L375 BasicCegarLoop]: trace histogram [81, 81, 80, 80, 1, 1, 1, 1] [2018-09-30 23:24:12,289 INFO L423 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:24:12,289 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:24:12,289 INFO L82 PathProgramCache]: Analyzing trace with hash -317071349, now seen corresponding path program 80 times [2018-09-30 23:24:12,289 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:24:12,289 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:24:12,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:24:12,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:24:12,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:24:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:24:15,068 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 6480 trivial. 0 not checked. [2018-09-30 23:24:15,068 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:24:15,068 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 23:24:15,075 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 23:24:15,206 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 23:24:15,206 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:24:15,211 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:24:15,275 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 6480 trivial. 0 not checked. [2018-09-30 23:24:15,296 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:24:15,296 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-09-30 23:24:15,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-09-30 23:24:15,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-09-30 23:24:15,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-09-30 23:24:15,297 INFO L87 Difference]: Start difference. First operand 327 states and 328 transitions. Second operand 83 states. [2018-09-30 23:24:16,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:24:16,250 INFO L93 Difference]: Finished difference Result 495 states and 498 transitions. [2018-09-30 23:24:16,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-09-30 23:24:16,250 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 326 [2018-09-30 23:24:16,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:24:16,252 INFO L225 Difference]: With dead ends: 495 [2018-09-30 23:24:16,253 INFO L226 Difference]: Without dead ends: 331 [2018-09-30 23:24:16,253 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-09-30 23:24:16,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-09-30 23:24:16,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2018-09-30 23:24:16,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-09-30 23:24:16,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 332 transitions. [2018-09-30 23:24:16,258 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 332 transitions. Word has length 326 [2018-09-30 23:24:16,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:24:16,258 INFO L480 AbstractCegarLoop]: Abstraction has 331 states and 332 transitions. [2018-09-30 23:24:16,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-09-30 23:24:16,258 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 332 transitions. [2018-09-30 23:24:16,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-09-30 23:24:16,260 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:24:16,260 INFO L375 BasicCegarLoop]: trace histogram [82, 82, 81, 81, 1, 1, 1, 1] [2018-09-30 23:24:16,260 INFO L423 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:24:16,260 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:24:16,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1616425345, now seen corresponding path program 81 times [2018-09-30 23:24:16,260 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:24:16,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:24:16,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:24:16,261 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:24:16,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:24:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:24:19,134 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 6642 trivial. 0 not checked. [2018-09-30 23:24:19,135 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:24:19,135 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 [2018-09-30 23:24:19,143 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 23:24:25,451 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s) [2018-09-30 23:24:25,452 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:24:25,459 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:24:25,524 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 6642 trivial. 0 not checked. [2018-09-30 23:24:25,550 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:24:25,551 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-09-30 23:24:25,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-09-30 23:24:25,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-09-30 23:24:25,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-09-30 23:24:25,552 INFO L87 Difference]: Start difference. First operand 331 states and 332 transitions. Second operand 84 states. [2018-09-30 23:24:26,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:24:26,490 INFO L93 Difference]: Finished difference Result 501 states and 504 transitions. [2018-09-30 23:24:26,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-09-30 23:24:26,491 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 330 [2018-09-30 23:24:26,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:24:26,492 INFO L225 Difference]: With dead ends: 501 [2018-09-30 23:24:26,492 INFO L226 Difference]: Without dead ends: 335 [2018-09-30 23:24:26,492 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-09-30 23:24:26,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-09-30 23:24:26,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2018-09-30 23:24:26,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-09-30 23:24:26,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 336 transitions. [2018-09-30 23:24:26,497 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 336 transitions. Word has length 330 [2018-09-30 23:24:26,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:24:26,497 INFO L480 AbstractCegarLoop]: Abstraction has 335 states and 336 transitions. [2018-09-30 23:24:26,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-09-30 23:24:26,497 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 336 transitions. [2018-09-30 23:24:26,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-09-30 23:24:26,498 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:24:26,498 INFO L375 BasicCegarLoop]: trace histogram [83, 83, 82, 82, 1, 1, 1, 1] [2018-09-30 23:24:26,499 INFO L423 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:24:26,499 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:24:26,499 INFO L82 PathProgramCache]: Analyzing trace with hash 668205811, now seen corresponding path program 82 times [2018-09-30 23:24:26,499 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:24:26,499 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:24:26,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:24:26,500 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:24:26,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:24:26,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:24:29,407 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 6806 trivial. 0 not checked. [2018-09-30 23:24:29,407 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:24:29,407 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 [2018-09-30 23:24:29,416 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 23:24:29,547 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 23:24:29,547 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:24:29,552 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:24:29,638 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 6806 trivial. 0 not checked. [2018-09-30 23:24:29,666 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:24:29,666 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-09-30 23:24:29,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-09-30 23:24:29,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-09-30 23:24:29,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-09-30 23:24:29,668 INFO L87 Difference]: Start difference. First operand 335 states and 336 transitions. Second operand 85 states. [2018-09-30 23:24:30,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:24:30,527 INFO L93 Difference]: Finished difference Result 507 states and 510 transitions. [2018-09-30 23:24:30,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-09-30 23:24:30,528 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 334 [2018-09-30 23:24:30,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:24:30,529 INFO L225 Difference]: With dead ends: 507 [2018-09-30 23:24:30,529 INFO L226 Difference]: Without dead ends: 339 [2018-09-30 23:24:30,530 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-09-30 23:24:30,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-09-30 23:24:30,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2018-09-30 23:24:30,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-09-30 23:24:30,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 340 transitions. [2018-09-30 23:24:30,535 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 340 transitions. Word has length 334 [2018-09-30 23:24:30,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:24:30,536 INFO L480 AbstractCegarLoop]: Abstraction has 339 states and 340 transitions. [2018-09-30 23:24:30,536 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-09-30 23:24:30,536 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 340 transitions. [2018-09-30 23:24:30,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-09-30 23:24:30,537 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:24:30,537 INFO L375 BasicCegarLoop]: trace histogram [84, 84, 83, 83, 1, 1, 1, 1] [2018-09-30 23:24:30,537 INFO L423 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:24:30,537 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:24:30,538 INFO L82 PathProgramCache]: Analyzing trace with hash 505740647, now seen corresponding path program 83 times [2018-09-30 23:24:30,538 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:24:30,538 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:24:30,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:24:30,538 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:24:30,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:24:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:24:33,498 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 6972 trivial. 0 not checked. [2018-09-30 23:24:33,498 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:24:33,498 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 23:24:33,505 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 23:24:42,207 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2018-09-30 23:24:42,207 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:24:42,218 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:24:42,282 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 6972 trivial. 0 not checked. [2018-09-30 23:24:42,313 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:24:42,314 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-09-30 23:24:42,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-09-30 23:24:42,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-09-30 23:24:42,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-09-30 23:24:42,315 INFO L87 Difference]: Start difference. First operand 339 states and 340 transitions. Second operand 86 states. [2018-09-30 23:24:43,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:24:43,365 INFO L93 Difference]: Finished difference Result 513 states and 516 transitions. [2018-09-30 23:24:43,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-09-30 23:24:43,365 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 338 [2018-09-30 23:24:43,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:24:43,367 INFO L225 Difference]: With dead ends: 513 [2018-09-30 23:24:43,368 INFO L226 Difference]: Without dead ends: 343 [2018-09-30 23:24:43,368 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-09-30 23:24:43,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-09-30 23:24:43,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2018-09-30 23:24:43,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-09-30 23:24:43,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 344 transitions. [2018-09-30 23:24:43,392 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 344 transitions. Word has length 338 [2018-09-30 23:24:43,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:24:43,392 INFO L480 AbstractCegarLoop]: Abstraction has 343 states and 344 transitions. [2018-09-30 23:24:43,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-09-30 23:24:43,392 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 344 transitions. [2018-09-30 23:24:43,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-09-30 23:24:43,393 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:24:43,394 INFO L375 BasicCegarLoop]: trace histogram [85, 85, 84, 84, 1, 1, 1, 1] [2018-09-30 23:24:43,394 INFO L423 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:24:43,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:24:43,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1251950043, now seen corresponding path program 84 times [2018-09-30 23:24:43,394 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:24:43,394 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:24:43,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:24:43,395 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:24:43,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:24:43,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:24:46,147 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2018-09-30 23:24:46,147 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:24:46,147 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 [2018-09-30 23:24:46,174 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 23:24:50,797 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2018-09-30 23:24:50,798 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:24:50,815 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:24:50,884 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2018-09-30 23:24:50,913 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:24:50,913 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-09-30 23:24:50,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-09-30 23:24:50,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-09-30 23:24:50,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-09-30 23:24:50,915 INFO L87 Difference]: Start difference. First operand 343 states and 344 transitions. Second operand 87 states. [2018-09-30 23:24:51,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:24:51,978 INFO L93 Difference]: Finished difference Result 519 states and 522 transitions. [2018-09-30 23:24:51,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-09-30 23:24:51,979 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 342 [2018-09-30 23:24:51,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:24:51,981 INFO L225 Difference]: With dead ends: 519 [2018-09-30 23:24:51,981 INFO L226 Difference]: Without dead ends: 347 [2018-09-30 23:24:51,982 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-09-30 23:24:51,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-09-30 23:24:51,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2018-09-30 23:24:51,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-09-30 23:24:51,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 348 transitions. [2018-09-30 23:24:51,988 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 348 transitions. Word has length 342 [2018-09-30 23:24:51,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:24:51,988 INFO L480 AbstractCegarLoop]: Abstraction has 347 states and 348 transitions. [2018-09-30 23:24:51,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-09-30 23:24:51,988 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 348 transitions. [2018-09-30 23:24:51,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-09-30 23:24:51,989 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:24:51,990 INFO L375 BasicCegarLoop]: trace histogram [86, 86, 85, 85, 1, 1, 1, 1] [2018-09-30 23:24:51,990 INFO L423 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:24:51,990 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:24:51,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1690813519, now seen corresponding path program 85 times [2018-09-30 23:24:51,990 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:24:51,990 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:24:51,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:24:51,991 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:24:51,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:24:52,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:24:55,054 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 7310 trivial. 0 not checked. [2018-09-30 23:24:55,054 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:24:55,054 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 [2018-09-30 23:24:55,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:24:55,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:24:55,211 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:24:55,282 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 7310 trivial. 0 not checked. [2018-09-30 23:24:55,302 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:24:55,303 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-09-30 23:24:55,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-09-30 23:24:55,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-09-30 23:24:55,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-09-30 23:24:55,304 INFO L87 Difference]: Start difference. First operand 347 states and 348 transitions. Second operand 88 states. [2018-09-30 23:24:56,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:24:56,218 INFO L93 Difference]: Finished difference Result 525 states and 528 transitions. [2018-09-30 23:24:56,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-09-30 23:24:56,219 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 346 [2018-09-30 23:24:56,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:24:56,221 INFO L225 Difference]: With dead ends: 525 [2018-09-30 23:24:56,221 INFO L226 Difference]: Without dead ends: 351 [2018-09-30 23:24:56,222 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-09-30 23:24:56,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-09-30 23:24:56,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2018-09-30 23:24:56,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-09-30 23:24:56,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 352 transitions. [2018-09-30 23:24:56,227 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 352 transitions. Word has length 346 [2018-09-30 23:24:56,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:24:56,228 INFO L480 AbstractCegarLoop]: Abstraction has 351 states and 352 transitions. [2018-09-30 23:24:56,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-09-30 23:24:56,228 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 352 transitions. [2018-09-30 23:24:56,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-09-30 23:24:56,229 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:24:56,229 INFO L375 BasicCegarLoop]: trace histogram [87, 87, 86, 86, 1, 1, 1, 1] [2018-09-30 23:24:56,230 INFO L423 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:24:56,230 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:24:56,230 INFO L82 PathProgramCache]: Analyzing trace with hash -744255293, now seen corresponding path program 86 times [2018-09-30 23:24:56,230 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:24:56,230 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:24:56,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:24:56,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:24:56,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:24:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:24:59,354 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 7482 trivial. 0 not checked. [2018-09-30 23:24:59,355 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:24:59,355 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 [2018-09-30 23:24:59,361 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 23:24:59,506 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 23:24:59,506 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:24:59,511 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:24:59,597 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 7482 trivial. 0 not checked. [2018-09-30 23:24:59,617 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:24:59,618 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-09-30 23:24:59,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-09-30 23:24:59,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-09-30 23:24:59,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-09-30 23:24:59,619 INFO L87 Difference]: Start difference. First operand 351 states and 352 transitions. Second operand 89 states. [2018-09-30 23:25:00,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:25:00,847 INFO L93 Difference]: Finished difference Result 531 states and 534 transitions. [2018-09-30 23:25:00,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-09-30 23:25:00,847 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 350 [2018-09-30 23:25:00,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:25:00,849 INFO L225 Difference]: With dead ends: 531 [2018-09-30 23:25:00,850 INFO L226 Difference]: Without dead ends: 355 [2018-09-30 23:25:00,850 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-09-30 23:25:00,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-09-30 23:25:00,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2018-09-30 23:25:00,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-09-30 23:25:00,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 356 transitions. [2018-09-30 23:25:00,855 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 356 transitions. Word has length 350 [2018-09-30 23:25:00,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:25:00,856 INFO L480 AbstractCegarLoop]: Abstraction has 355 states and 356 transitions. [2018-09-30 23:25:00,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-09-30 23:25:00,856 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 356 transitions. [2018-09-30 23:25:00,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-09-30 23:25:00,857 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:25:00,857 INFO L375 BasicCegarLoop]: trace histogram [88, 88, 87, 87, 1, 1, 1, 1] [2018-09-30 23:25:00,857 INFO L423 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:25:00,857 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:25:00,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1840751415, now seen corresponding path program 87 times [2018-09-30 23:25:00,858 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:25:00,858 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:25:00,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:25:00,858 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:25:00,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:25:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:25:03,990 INFO L134 CoverageAnalysis]: Checked inductivity of 15312 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2018-09-30 23:25:03,990 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:25:03,990 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 [2018-09-30 23:25:04,000 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 23:25:11,625 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 88 check-sat command(s) [2018-09-30 23:25:11,625 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:25:11,633 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:25:11,707 INFO L134 CoverageAnalysis]: Checked inductivity of 15312 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2018-09-30 23:25:11,732 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:25:11,732 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-09-30 23:25:11,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-09-30 23:25:11,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-09-30 23:25:11,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-09-30 23:25:11,733 INFO L87 Difference]: Start difference. First operand 355 states and 356 transitions. Second operand 90 states. [2018-09-30 23:25:12,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:25:12,600 INFO L93 Difference]: Finished difference Result 537 states and 540 transitions. [2018-09-30 23:25:12,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-09-30 23:25:12,601 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 354 [2018-09-30 23:25:12,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:25:12,603 INFO L225 Difference]: With dead ends: 537 [2018-09-30 23:25:12,603 INFO L226 Difference]: Without dead ends: 359 [2018-09-30 23:25:12,604 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-09-30 23:25:12,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-09-30 23:25:12,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2018-09-30 23:25:12,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-09-30 23:25:12,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 360 transitions. [2018-09-30 23:25:12,610 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 360 transitions. Word has length 354 [2018-09-30 23:25:12,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:25:12,610 INFO L480 AbstractCegarLoop]: Abstraction has 359 states and 360 transitions. [2018-09-30 23:25:12,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-09-30 23:25:12,610 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 360 transitions. [2018-09-30 23:25:12,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-09-30 23:25:12,612 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:25:12,612 INFO L375 BasicCegarLoop]: trace histogram [89, 89, 88, 88, 1, 1, 1, 1] [2018-09-30 23:25:12,612 INFO L423 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:25:12,612 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:25:12,613 INFO L82 PathProgramCache]: Analyzing trace with hash 956890027, now seen corresponding path program 88 times [2018-09-30 23:25:12,613 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:25:12,613 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:25:12,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:25:12,613 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:25:12,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:25:12,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:25:15,877 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 7832 trivial. 0 not checked. [2018-09-30 23:25:15,878 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:25:15,878 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 23:25:15,885 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 23:25:16,030 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 23:25:16,031 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:25:16,036 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:25:16,111 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 7832 trivial. 0 not checked. [2018-09-30 23:25:16,132 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:25:16,132 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-09-30 23:25:16,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-09-30 23:25:16,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-09-30 23:25:16,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-09-30 23:25:16,133 INFO L87 Difference]: Start difference. First operand 359 states and 360 transitions. Second operand 91 states. [2018-09-30 23:25:17,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:25:17,063 INFO L93 Difference]: Finished difference Result 543 states and 546 transitions. [2018-09-30 23:25:17,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-09-30 23:25:17,064 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 358 [2018-09-30 23:25:17,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:25:17,066 INFO L225 Difference]: With dead ends: 543 [2018-09-30 23:25:17,066 INFO L226 Difference]: Without dead ends: 363 [2018-09-30 23:25:17,067 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-09-30 23:25:17,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-09-30 23:25:17,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2018-09-30 23:25:17,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-09-30 23:25:17,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 364 transitions. [2018-09-30 23:25:17,071 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 364 transitions. Word has length 358 [2018-09-30 23:25:17,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:25:17,072 INFO L480 AbstractCegarLoop]: Abstraction has 363 states and 364 transitions. [2018-09-30 23:25:17,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-09-30 23:25:17,072 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 364 transitions. [2018-09-30 23:25:17,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-09-30 23:25:17,073 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:25:17,073 INFO L375 BasicCegarLoop]: trace histogram [90, 90, 89, 89, 1, 1, 1, 1] [2018-09-30 23:25:17,073 INFO L423 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:25:17,073 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:25:17,074 INFO L82 PathProgramCache]: Analyzing trace with hash 723294751, now seen corresponding path program 89 times [2018-09-30 23:25:17,074 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:25:17,074 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:25:17,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:25:17,074 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:25:17,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:25:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:25:20,320 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 8010 trivial. 0 not checked. [2018-09-30 23:25:20,321 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:25:20,321 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 23:25:20,328 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 23:25:31,754 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2018-09-30 23:25:31,754 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:25:31,766 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:25:31,859 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 8010 trivial. 0 not checked. [2018-09-30 23:25:31,891 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:25:31,891 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-09-30 23:25:31,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-09-30 23:25:31,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-09-30 23:25:31,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-09-30 23:25:31,892 INFO L87 Difference]: Start difference. First operand 363 states and 364 transitions. Second operand 92 states. [2018-09-30 23:25:32,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:25:32,870 INFO L93 Difference]: Finished difference Result 549 states and 552 transitions. [2018-09-30 23:25:32,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-09-30 23:25:32,870 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 362 [2018-09-30 23:25:32,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:25:32,873 INFO L225 Difference]: With dead ends: 549 [2018-09-30 23:25:32,873 INFO L226 Difference]: Without dead ends: 367 [2018-09-30 23:25:32,873 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-09-30 23:25:32,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-09-30 23:25:32,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2018-09-30 23:25:32,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2018-09-30 23:25:32,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 368 transitions. [2018-09-30 23:25:32,879 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 368 transitions. Word has length 362 [2018-09-30 23:25:32,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:25:32,879 INFO L480 AbstractCegarLoop]: Abstraction has 367 states and 368 transitions. [2018-09-30 23:25:32,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-09-30 23:25:32,879 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 368 transitions. [2018-09-30 23:25:32,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-09-30 23:25:32,880 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:25:32,880 INFO L375 BasicCegarLoop]: trace histogram [91, 91, 90, 90, 1, 1, 1, 1] [2018-09-30 23:25:32,881 INFO L423 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:25:32,881 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:25:32,881 INFO L82 PathProgramCache]: Analyzing trace with hash -386433389, now seen corresponding path program 90 times [2018-09-30 23:25:32,881 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:25:32,881 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:25:32,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:25:32,882 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:25:32,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:25:32,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:25:36,310 INFO L134 CoverageAnalysis]: Checked inductivity of 16380 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 8190 trivial. 0 not checked. [2018-09-30 23:25:36,311 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:25:36,311 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 [2018-09-30 23:25:36,318 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 23:25:41,927 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2018-09-30 23:25:41,928 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:25:41,943 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:25:42,034 INFO L134 CoverageAnalysis]: Checked inductivity of 16380 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 8190 trivial. 0 not checked. [2018-09-30 23:25:42,059 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:25:42,060 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-09-30 23:25:42,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-09-30 23:25:42,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-09-30 23:25:42,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-09-30 23:25:42,061 INFO L87 Difference]: Start difference. First operand 367 states and 368 transitions. Second operand 93 states. [2018-09-30 23:25:43,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:25:43,411 INFO L93 Difference]: Finished difference Result 555 states and 558 transitions. [2018-09-30 23:25:43,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-09-30 23:25:43,412 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 366 [2018-09-30 23:25:43,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:25:43,414 INFO L225 Difference]: With dead ends: 555 [2018-09-30 23:25:43,414 INFO L226 Difference]: Without dead ends: 371 [2018-09-30 23:25:43,415 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-09-30 23:25:43,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2018-09-30 23:25:43,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2018-09-30 23:25:43,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2018-09-30 23:25:43,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 372 transitions. [2018-09-30 23:25:43,420 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 372 transitions. Word has length 366 [2018-09-30 23:25:43,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:25:43,420 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 372 transitions. [2018-09-30 23:25:43,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-09-30 23:25:43,420 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 372 transitions. [2018-09-30 23:25:43,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-09-30 23:25:43,421 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:25:43,422 INFO L375 BasicCegarLoop]: trace histogram [92, 92, 91, 91, 1, 1, 1, 1] [2018-09-30 23:25:43,422 INFO L423 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:25:43,422 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:25:43,422 INFO L82 PathProgramCache]: Analyzing trace with hash -2028033785, now seen corresponding path program 91 times [2018-09-30 23:25:43,422 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:25:43,422 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:25:43,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:25:43,423 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:25:43,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:25:43,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:25:46,865 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 8372 trivial. 0 not checked. [2018-09-30 23:25:46,866 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:25:46,866 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 [2018-09-30 23:25:46,875 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:25:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:25:47,031 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:25:47,129 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 8372 trivial. 0 not checked. [2018-09-30 23:25:47,149 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:25:47,150 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-09-30 23:25:47,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-09-30 23:25:47,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-09-30 23:25:47,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-09-30 23:25:47,151 INFO L87 Difference]: Start difference. First operand 371 states and 372 transitions. Second operand 94 states. [2018-09-30 23:25:48,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:25:48,513 INFO L93 Difference]: Finished difference Result 561 states and 564 transitions. [2018-09-30 23:25:48,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-09-30 23:25:48,513 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 370 [2018-09-30 23:25:48,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:25:48,515 INFO L225 Difference]: With dead ends: 561 [2018-09-30 23:25:48,515 INFO L226 Difference]: Without dead ends: 375 [2018-09-30 23:25:48,516 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-09-30 23:25:48,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-09-30 23:25:48,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2018-09-30 23:25:48,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2018-09-30 23:25:48,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 376 transitions. [2018-09-30 23:25:48,522 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 376 transitions. Word has length 370 [2018-09-30 23:25:48,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:25:48,522 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 376 transitions. [2018-09-30 23:25:48,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-09-30 23:25:48,522 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 376 transitions. [2018-09-30 23:25:48,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-09-30 23:25:48,523 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:25:48,524 INFO L375 BasicCegarLoop]: trace histogram [93, 93, 92, 92, 1, 1, 1, 1] [2018-09-30 23:25:48,524 INFO L423 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:25:48,524 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:25:48,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1234639227, now seen corresponding path program 92 times [2018-09-30 23:25:48,524 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:25:48,524 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:25:48,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:25:48,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:25:48,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:25:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:25:52,059 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 8556 trivial. 0 not checked. [2018-09-30 23:25:52,059 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:25:52,059 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 [2018-09-30 23:25:52,067 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 23:25:52,219 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 23:25:52,219 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:25:52,247 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:25:52,329 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 8556 trivial. 0 not checked. [2018-09-30 23:25:52,350 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:25:52,350 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-09-30 23:25:52,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-09-30 23:25:52,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-09-30 23:25:52,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-09-30 23:25:52,352 INFO L87 Difference]: Start difference. First operand 375 states and 376 transitions. Second operand 95 states. [2018-09-30 23:25:53,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:25:53,688 INFO L93 Difference]: Finished difference Result 567 states and 570 transitions. [2018-09-30 23:25:53,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-09-30 23:25:53,689 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 374 [2018-09-30 23:25:53,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:25:53,691 INFO L225 Difference]: With dead ends: 567 [2018-09-30 23:25:53,691 INFO L226 Difference]: Without dead ends: 379 [2018-09-30 23:25:53,692 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-09-30 23:25:53,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-09-30 23:25:53,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2018-09-30 23:25:53,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-09-30 23:25:53,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 380 transitions. [2018-09-30 23:25:53,697 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 380 transitions. Word has length 374 [2018-09-30 23:25:53,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:25:53,697 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 380 transitions. [2018-09-30 23:25:53,697 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-09-30 23:25:53,697 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 380 transitions. [2018-09-30 23:25:53,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-09-30 23:25:53,698 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:25:53,698 INFO L375 BasicCegarLoop]: trace histogram [94, 94, 93, 93, 1, 1, 1, 1] [2018-09-30 23:25:53,699 INFO L423 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:25:53,699 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:25:53,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1676005359, now seen corresponding path program 93 times [2018-09-30 23:25:53,699 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:25:53,699 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:25:53,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:25:53,699 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:25:53,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:25:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:25:57,821 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 8742 trivial. 0 not checked. [2018-09-30 23:25:57,821 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:25:57,821 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 23:25:57,828 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 23:26:07,920 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 94 check-sat command(s) [2018-09-30 23:26:07,921 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:26:07,930 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:26:08,013 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 8742 trivial. 0 not checked. [2018-09-30 23:26:08,040 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:26:08,040 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-09-30 23:26:08,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-09-30 23:26:08,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-09-30 23:26:08,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-09-30 23:26:08,042 INFO L87 Difference]: Start difference. First operand 379 states and 380 transitions. Second operand 96 states. [2018-09-30 23:26:09,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:26:09,581 INFO L93 Difference]: Finished difference Result 573 states and 576 transitions. [2018-09-30 23:26:09,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-09-30 23:26:09,581 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 378 [2018-09-30 23:26:09,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:26:09,583 INFO L225 Difference]: With dead ends: 573 [2018-09-30 23:26:09,583 INFO L226 Difference]: Without dead ends: 383 [2018-09-30 23:26:09,584 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-09-30 23:26:09,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-09-30 23:26:09,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2018-09-30 23:26:09,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-09-30 23:26:09,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 384 transitions. [2018-09-30 23:26:09,589 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 384 transitions. Word has length 378 [2018-09-30 23:26:09,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:26:09,590 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 384 transitions. [2018-09-30 23:26:09,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-09-30 23:26:09,590 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 384 transitions. [2018-09-30 23:26:09,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-09-30 23:26:09,591 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:26:09,591 INFO L375 BasicCegarLoop]: trace histogram [95, 95, 94, 94, 1, 1, 1, 1] [2018-09-30 23:26:09,592 INFO L423 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:26:09,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:26:09,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1190146973, now seen corresponding path program 94 times [2018-09-30 23:26:09,592 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:26:09,592 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:26:09,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:26:09,593 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:26:09,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:26:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:26:13,231 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 8930 trivial. 0 not checked. [2018-09-30 23:26:13,231 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:26:13,231 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 [2018-09-30 23:26:13,238 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 23:26:13,386 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 23:26:13,386 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:26:13,391 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:26:13,493 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 8930 trivial. 0 not checked. [2018-09-30 23:26:13,513 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:26:13,513 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-09-30 23:26:13,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-09-30 23:26:13,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-09-30 23:26:13,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-09-30 23:26:13,515 INFO L87 Difference]: Start difference. First operand 383 states and 384 transitions. Second operand 97 states. [2018-09-30 23:26:14,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:26:14,551 INFO L93 Difference]: Finished difference Result 579 states and 582 transitions. [2018-09-30 23:26:14,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-09-30 23:26:14,551 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 382 [2018-09-30 23:26:14,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:26:14,554 INFO L225 Difference]: With dead ends: 579 [2018-09-30 23:26:14,554 INFO L226 Difference]: Without dead ends: 387 [2018-09-30 23:26:14,555 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-09-30 23:26:14,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-09-30 23:26:14,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2018-09-30 23:26:14,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-09-30 23:26:14,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 388 transitions. [2018-09-30 23:26:14,560 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 388 transitions. Word has length 382 [2018-09-30 23:26:14,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:26:14,560 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 388 transitions. [2018-09-30 23:26:14,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-09-30 23:26:14,560 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 388 transitions. [2018-09-30 23:26:14,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-09-30 23:26:14,562 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:26:14,562 INFO L375 BasicCegarLoop]: trace histogram [96, 96, 95, 95, 1, 1, 1, 1] [2018-09-30 23:26:14,562 INFO L423 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:26:14,562 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:26:14,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1684402473, now seen corresponding path program 95 times [2018-09-30 23:26:14,563 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:26:14,563 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:26:14,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:26:14,563 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:26:14,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:26:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:26:18,337 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 9120 trivial. 0 not checked. [2018-09-30 23:26:18,337 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:26:18,337 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-09-30 23:26:18,346 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:26:34,700 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 96 check-sat command(s) [2018-09-30 23:26:34,700 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:26:34,714 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:26:34,800 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 9120 trivial. 0 not checked. [2018-09-30 23:26:34,836 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:26:34,837 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-09-30 23:26:34,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-09-30 23:26:34,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-09-30 23:26:34,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-09-30 23:26:34,838 INFO L87 Difference]: Start difference. First operand 387 states and 388 transitions. Second operand 98 states. [2018-09-30 23:26:36,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:26:36,202 INFO L93 Difference]: Finished difference Result 585 states and 588 transitions. [2018-09-30 23:26:36,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-09-30 23:26:36,202 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 386 [2018-09-30 23:26:36,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:26:36,203 INFO L225 Difference]: With dead ends: 585 [2018-09-30 23:26:36,203 INFO L226 Difference]: Without dead ends: 391 [2018-09-30 23:26:36,204 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-09-30 23:26:36,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2018-09-30 23:26:36,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2018-09-30 23:26:36,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2018-09-30 23:26:36,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 392 transitions. [2018-09-30 23:26:36,209 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 392 transitions. Word has length 386 [2018-09-30 23:26:36,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:26:36,209 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 392 transitions. [2018-09-30 23:26:36,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-09-30 23:26:36,209 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 392 transitions. [2018-09-30 23:26:36,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-09-30 23:26:36,211 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:26:36,211 INFO L375 BasicCegarLoop]: trace histogram [97, 97, 96, 96, 1, 1, 1, 1] [2018-09-30 23:26:36,211 INFO L423 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:26:36,212 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:26:36,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1920362677, now seen corresponding path program 96 times [2018-09-30 23:26:36,212 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:26:36,212 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:26:36,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:26:36,213 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:26:36,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:26:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:26:39,689 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 9312 trivial. 0 not checked. [2018-09-30 23:26:39,689 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:26:39,689 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 [2018-09-30 23:26:39,697 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 23:26:47,578 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 97 check-sat command(s) [2018-09-30 23:26:47,578 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:26:47,602 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:26:47,704 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 9312 trivial. 0 not checked. [2018-09-30 23:26:47,735 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:26:47,736 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-09-30 23:26:47,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-09-30 23:26:47,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-09-30 23:26:47,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-09-30 23:26:47,737 INFO L87 Difference]: Start difference. First operand 391 states and 392 transitions. Second operand 99 states. [2018-09-30 23:26:49,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:26:49,104 INFO L93 Difference]: Finished difference Result 591 states and 594 transitions. [2018-09-30 23:26:49,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-09-30 23:26:49,104 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 390 [2018-09-30 23:26:49,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:26:49,106 INFO L225 Difference]: With dead ends: 591 [2018-09-30 23:26:49,106 INFO L226 Difference]: Without dead ends: 395 [2018-09-30 23:26:49,106 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-09-30 23:26:49,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2018-09-30 23:26:49,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2018-09-30 23:26:49,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2018-09-30 23:26:49,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 396 transitions. [2018-09-30 23:26:49,112 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 396 transitions. Word has length 390 [2018-09-30 23:26:49,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:26:49,112 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 396 transitions. [2018-09-30 23:26:49,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-09-30 23:26:49,112 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 396 transitions. [2018-09-30 23:26:49,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-09-30 23:26:49,114 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:26:49,114 INFO L375 BasicCegarLoop]: trace histogram [98, 98, 97, 97, 1, 1, 1, 1] [2018-09-30 23:26:49,114 INFO L423 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:26:49,114 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:26:49,114 INFO L82 PathProgramCache]: Analyzing trace with hash 6514111, now seen corresponding path program 97 times [2018-09-30 23:26:49,114 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:26:49,114 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:26:49,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:26:49,115 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:26:49,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:26:49,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:26:52,976 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 9506 trivial. 0 not checked. [2018-09-30 23:26:52,976 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:26:52,976 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 23:26:52,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:26:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:26:53,156 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:26:53,246 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 9506 trivial. 0 not checked. [2018-09-30 23:26:53,267 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:26:53,267 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-09-30 23:26:53,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-09-30 23:26:53,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-09-30 23:26:53,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-09-30 23:26:53,269 INFO L87 Difference]: Start difference. First operand 395 states and 396 transitions. Second operand 100 states. [2018-09-30 23:26:54,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:26:54,412 INFO L93 Difference]: Finished difference Result 597 states and 600 transitions. [2018-09-30 23:26:54,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-09-30 23:26:54,412 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 394 [2018-09-30 23:26:54,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:26:54,414 INFO L225 Difference]: With dead ends: 597 [2018-09-30 23:26:54,415 INFO L226 Difference]: Without dead ends: 399 [2018-09-30 23:26:54,415 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-09-30 23:26:54,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-09-30 23:26:54,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2018-09-30 23:26:54,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2018-09-30 23:26:54,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 400 transitions. [2018-09-30 23:26:54,420 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 400 transitions. Word has length 394 [2018-09-30 23:26:54,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:26:54,420 INFO L480 AbstractCegarLoop]: Abstraction has 399 states and 400 transitions. [2018-09-30 23:26:54,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-09-30 23:26:54,420 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 400 transitions. [2018-09-30 23:26:54,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-09-30 23:26:54,422 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:26:54,422 INFO L375 BasicCegarLoop]: trace histogram [99, 99, 98, 98, 1, 1, 1, 1] [2018-09-30 23:26:54,422 INFO L423 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:26:54,422 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:26:54,423 INFO L82 PathProgramCache]: Analyzing trace with hash 355236403, now seen corresponding path program 98 times [2018-09-30 23:26:54,423 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:26:54,423 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:26:54,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:26:54,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:26:54,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:26:54,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:26:58,424 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 9702 trivial. 0 not checked. [2018-09-30 23:26:58,425 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:26:58,425 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 23:26:58,433 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 23:26:58,596 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 23:26:58,596 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:26:58,601 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:26:58,712 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 9702 trivial. 0 not checked. [2018-09-30 23:26:58,732 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:26:58,732 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-09-30 23:26:58,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-09-30 23:26:58,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-09-30 23:26:58,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-09-30 23:26:58,734 INFO L87 Difference]: Start difference. First operand 399 states and 400 transitions. Second operand 101 states. [2018-09-30 23:27:00,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:27:00,591 INFO L93 Difference]: Finished difference Result 603 states and 606 transitions. [2018-09-30 23:27:00,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-09-30 23:27:00,592 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 398 [2018-09-30 23:27:00,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:27:00,594 INFO L225 Difference]: With dead ends: 603 [2018-09-30 23:27:00,594 INFO L226 Difference]: Without dead ends: 403 [2018-09-30 23:27:00,595 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-09-30 23:27:00,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2018-09-30 23:27:00,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2018-09-30 23:27:00,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2018-09-30 23:27:00,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 404 transitions. [2018-09-30 23:27:00,600 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 404 transitions. Word has length 398 [2018-09-30 23:27:00,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:27:00,601 INFO L480 AbstractCegarLoop]: Abstraction has 403 states and 404 transitions. [2018-09-30 23:27:00,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-09-30 23:27:00,601 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 404 transitions. [2018-09-30 23:27:00,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-09-30 23:27:00,602 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:27:00,602 INFO L375 BasicCegarLoop]: trace histogram [100, 100, 99, 99, 1, 1, 1, 1] [2018-09-30 23:27:00,603 INFO L423 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:27:00,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:27:00,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1550439591, now seen corresponding path program 99 times [2018-09-30 23:27:00,603 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:27:00,603 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:27:00,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:27:00,604 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:27:00,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:27:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:27:04,612 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 9900 trivial. 0 not checked. [2018-09-30 23:27:04,612 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:27:04,613 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 23:27:04,620 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 23:27:17,802 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 100 check-sat command(s) [2018-09-30 23:27:17,802 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:27:17,812 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:27:17,919 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 9900 trivial. 0 not checked. [2018-09-30 23:27:17,946 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:27:17,946 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-09-30 23:27:17,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-09-30 23:27:17,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-09-30 23:27:17,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-09-30 23:27:17,948 INFO L87 Difference]: Start difference. First operand 403 states and 404 transitions. Second operand 102 states. [2018-09-30 23:27:19,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:27:19,644 INFO L93 Difference]: Finished difference Result 609 states and 612 transitions. [2018-09-30 23:27:19,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-09-30 23:27:19,645 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 402 [2018-09-30 23:27:19,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:27:19,647 INFO L225 Difference]: With dead ends: 609 [2018-09-30 23:27:19,647 INFO L226 Difference]: Without dead ends: 407 [2018-09-30 23:27:19,648 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-09-30 23:27:19,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-09-30 23:27:19,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2018-09-30 23:27:19,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-09-30 23:27:19,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 408 transitions. [2018-09-30 23:27:19,653 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 408 transitions. Word has length 402 [2018-09-30 23:27:19,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:27:19,653 INFO L480 AbstractCegarLoop]: Abstraction has 407 states and 408 transitions. [2018-09-30 23:27:19,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-09-30 23:27:19,653 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 408 transitions. [2018-09-30 23:27:19,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-09-30 23:27:19,655 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:27:19,656 INFO L375 BasicCegarLoop]: trace histogram [101, 101, 100, 100, 1, 1, 1, 1] [2018-09-30 23:27:19,656 INFO L423 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:27:19,656 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:27:19,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1776257765, now seen corresponding path program 100 times [2018-09-30 23:27:19,656 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:27:19,656 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:27:19,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:27:19,657 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:27:19,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:27:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:27:23,745 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 10100 trivial. 0 not checked. [2018-09-30 23:27:23,746 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:27:23,746 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 23:27:23,753 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 23:27:23,915 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 23:27:23,916 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:27:23,922 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:27:24,016 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 10100 trivial. 0 not checked. [2018-09-30 23:27:24,037 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:27:24,037 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-09-30 23:27:24,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-09-30 23:27:24,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-09-30 23:27:24,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-09-30 23:27:24,038 INFO L87 Difference]: Start difference. First operand 407 states and 408 transitions. Second operand 103 states. [2018-09-30 23:27:25,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:27:25,807 INFO L93 Difference]: Finished difference Result 615 states and 618 transitions. [2018-09-30 23:27:25,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-09-30 23:27:25,807 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 406 [2018-09-30 23:27:25,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:27:25,809 INFO L225 Difference]: With dead ends: 615 [2018-09-30 23:27:25,810 INFO L226 Difference]: Without dead ends: 411 [2018-09-30 23:27:25,811 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-09-30 23:27:25,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2018-09-30 23:27:25,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2018-09-30 23:27:25,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-09-30 23:27:25,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 412 transitions. [2018-09-30 23:27:25,818 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 412 transitions. Word has length 406 [2018-09-30 23:27:25,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:27:25,818 INFO L480 AbstractCegarLoop]: Abstraction has 411 states and 412 transitions. [2018-09-30 23:27:25,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-09-30 23:27:25,818 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 412 transitions. [2018-09-30 23:27:25,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-09-30 23:27:25,820 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:27:25,820 INFO L375 BasicCegarLoop]: trace histogram [102, 102, 101, 101, 1, 1, 1, 1] [2018-09-30 23:27:25,821 INFO L423 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:27:25,821 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:27:25,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1909808015, now seen corresponding path program 101 times [2018-09-30 23:27:25,821 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:27:25,821 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:27:25,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:27:25,822 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:27:25,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:27:25,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:27:30,119 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 10302 trivial. 0 not checked. [2018-09-30 23:27:30,119 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:27:30,119 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 [2018-09-30 23:27:30,127 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 23:27:51,890 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 102 check-sat command(s) [2018-09-30 23:27:51,890 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:27:51,903 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:27:52,013 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 10302 trivial. 0 not checked. [2018-09-30 23:27:52,048 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:27:52,049 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-09-30 23:27:52,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-09-30 23:27:52,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-09-30 23:27:52,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-09-30 23:27:52,051 INFO L87 Difference]: Start difference. First operand 411 states and 412 transitions. Second operand 104 states. [2018-09-30 23:27:54,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:27:54,018 INFO L93 Difference]: Finished difference Result 621 states and 624 transitions. [2018-09-30 23:27:54,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-09-30 23:27:54,018 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 410 [2018-09-30 23:27:54,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:27:54,020 INFO L225 Difference]: With dead ends: 621 [2018-09-30 23:27:54,020 INFO L226 Difference]: Without dead ends: 415 [2018-09-30 23:27:54,021 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-09-30 23:27:54,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2018-09-30 23:27:54,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2018-09-30 23:27:54,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2018-09-30 23:27:54,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 416 transitions. [2018-09-30 23:27:54,028 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 416 transitions. Word has length 410 [2018-09-30 23:27:54,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:27:54,028 INFO L480 AbstractCegarLoop]: Abstraction has 415 states and 416 transitions. [2018-09-30 23:27:54,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-09-30 23:27:54,028 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 416 transitions. [2018-09-30 23:27:54,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-09-30 23:27:54,030 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:27:54,030 INFO L375 BasicCegarLoop]: trace histogram [103, 103, 102, 102, 1, 1, 1, 1] [2018-09-30 23:27:54,031 INFO L423 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:27:54,031 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:27:54,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1317898243, now seen corresponding path program 102 times [2018-09-30 23:27:54,031 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:27:54,031 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:27:54,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:27:54,032 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:27:54,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:27:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:27:58,270 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 10506 trivial. 0 not checked. [2018-09-30 23:27:58,270 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:27:58,270 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 23:27:58,277 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 23:28:08,326 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2018-09-30 23:28:08,326 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:28:08,343 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:28:08,460 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 10506 trivial. 0 not checked. [2018-09-30 23:28:08,489 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:28:08,490 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-09-30 23:28:08,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-09-30 23:28:08,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-09-30 23:28:08,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-09-30 23:28:08,491 INFO L87 Difference]: Start difference. First operand 415 states and 416 transitions. Second operand 105 states. [2018-09-30 23:28:09,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:28:09,993 INFO L93 Difference]: Finished difference Result 627 states and 630 transitions. [2018-09-30 23:28:09,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-09-30 23:28:09,994 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 414 [2018-09-30 23:28:09,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:28:09,995 INFO L225 Difference]: With dead ends: 627 [2018-09-30 23:28:09,996 INFO L226 Difference]: Without dead ends: 419 [2018-09-30 23:28:09,998 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-09-30 23:28:09,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2018-09-30 23:28:10,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2018-09-30 23:28:10,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2018-09-30 23:28:10,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 420 transitions. [2018-09-30 23:28:10,003 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 420 transitions. Word has length 414 [2018-09-30 23:28:10,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:28:10,004 INFO L480 AbstractCegarLoop]: Abstraction has 419 states and 420 transitions. [2018-09-30 23:28:10,004 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-09-30 23:28:10,004 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 420 transitions. [2018-09-30 23:28:10,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-09-30 23:28:10,006 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:28:10,006 INFO L375 BasicCegarLoop]: trace histogram [104, 104, 103, 103, 1, 1, 1, 1] [2018-09-30 23:28:10,006 INFO L423 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:28:10,007 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:28:10,007 INFO L82 PathProgramCache]: Analyzing trace with hash -87164297, now seen corresponding path program 103 times [2018-09-30 23:28:10,007 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:28:10,007 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:28:10,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:28:10,008 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:28:10,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:28:10,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:28:14,246 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 10712 trivial. 0 not checked. [2018-09-30 23:28:14,246 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:28:14,246 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 [2018-09-30 23:28:14,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:28:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:28:14,430 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:28:14,533 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 10712 trivial. 0 not checked. [2018-09-30 23:28:14,555 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:28:14,555 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-09-30 23:28:14,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-09-30 23:28:14,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-09-30 23:28:14,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-09-30 23:28:14,557 INFO L87 Difference]: Start difference. First operand 419 states and 420 transitions. Second operand 106 states. [2018-09-30 23:28:15,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:28:15,971 INFO L93 Difference]: Finished difference Result 633 states and 636 transitions. [2018-09-30 23:28:15,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-09-30 23:28:15,972 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 418 [2018-09-30 23:28:15,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:28:15,972 INFO L225 Difference]: With dead ends: 633 [2018-09-30 23:28:15,973 INFO L226 Difference]: Without dead ends: 423 [2018-09-30 23:28:15,973 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-09-30 23:28:15,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-09-30 23:28:15,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2018-09-30 23:28:15,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2018-09-30 23:28:15,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 424 transitions. [2018-09-30 23:28:15,980 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 424 transitions. Word has length 418 [2018-09-30 23:28:15,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:28:15,981 INFO L480 AbstractCegarLoop]: Abstraction has 423 states and 424 transitions. [2018-09-30 23:28:15,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-09-30 23:28:15,981 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 424 transitions. [2018-09-30 23:28:15,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-09-30 23:28:15,983 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:28:15,983 INFO L375 BasicCegarLoop]: trace histogram [105, 105, 104, 104, 1, 1, 1, 1] [2018-09-30 23:28:15,983 INFO L423 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:28:15,984 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:28:15,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1956360939, now seen corresponding path program 104 times [2018-09-30 23:28:15,984 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:28:15,984 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:28:15,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:28:15,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:28:15,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:28:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:28:20,428 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 10920 trivial. 0 not checked. [2018-09-30 23:28:20,428 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:28:20,429 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 [2018-09-30 23:28:20,435 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 23:28:20,604 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 23:28:20,605 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:28:20,610 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:28:20,773 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 10920 trivial. 0 not checked. [2018-09-30 23:28:20,805 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:28:20,805 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-09-30 23:28:20,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-09-30 23:28:20,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-09-30 23:28:20,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-09-30 23:28:20,807 INFO L87 Difference]: Start difference. First operand 423 states and 424 transitions. Second operand 107 states. [2018-09-30 23:28:22,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:28:22,269 INFO L93 Difference]: Finished difference Result 639 states and 642 transitions. [2018-09-30 23:28:22,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-09-30 23:28:22,270 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 422 [2018-09-30 23:28:22,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:28:22,271 INFO L225 Difference]: With dead ends: 639 [2018-09-30 23:28:22,271 INFO L226 Difference]: Without dead ends: 427 [2018-09-30 23:28:22,272 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-09-30 23:28:22,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2018-09-30 23:28:22,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2018-09-30 23:28:22,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2018-09-30 23:28:22,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 428 transitions. [2018-09-30 23:28:22,277 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 428 transitions. Word has length 422 [2018-09-30 23:28:22,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:28:22,278 INFO L480 AbstractCegarLoop]: Abstraction has 427 states and 428 transitions. [2018-09-30 23:28:22,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-09-30 23:28:22,278 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 428 transitions. [2018-09-30 23:28:22,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-09-30 23:28:22,279 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:28:22,279 INFO L375 BasicCegarLoop]: trace histogram [106, 106, 105, 105, 1, 1, 1, 1] [2018-09-30 23:28:22,280 INFO L423 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:28:22,280 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:28:22,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1451511457, now seen corresponding path program 105 times [2018-09-30 23:28:22,280 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:28:22,280 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:28:22,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:28:22,281 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:28:22,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:28:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:28:26,690 INFO L134 CoverageAnalysis]: Checked inductivity of 22260 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 11130 trivial. 0 not checked. [2018-09-30 23:28:26,691 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:28:26,691 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 [2018-09-30 23:28:26,697 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 23:28:43,127 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 106 check-sat command(s) [2018-09-30 23:28:43,127 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:28:43,137 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:28:43,244 INFO L134 CoverageAnalysis]: Checked inductivity of 22260 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 11130 trivial. 0 not checked. [2018-09-30 23:28:43,273 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:28:43,274 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-09-30 23:28:43,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-09-30 23:28:43,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-09-30 23:28:43,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-09-30 23:28:43,275 INFO L87 Difference]: Start difference. First operand 427 states and 428 transitions. Second operand 108 states. [2018-09-30 23:28:45,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:28:45,447 INFO L93 Difference]: Finished difference Result 645 states and 648 transitions. [2018-09-30 23:28:45,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-09-30 23:28:45,447 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 426 [2018-09-30 23:28:45,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:28:45,448 INFO L225 Difference]: With dead ends: 645 [2018-09-30 23:28:45,448 INFO L226 Difference]: Without dead ends: 431 [2018-09-30 23:28:45,449 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-09-30 23:28:45,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2018-09-30 23:28:45,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2018-09-30 23:28:45,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2018-09-30 23:28:45,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 432 transitions. [2018-09-30 23:28:45,456 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 432 transitions. Word has length 426 [2018-09-30 23:28:45,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:28:45,456 INFO L480 AbstractCegarLoop]: Abstraction has 431 states and 432 transitions. [2018-09-30 23:28:45,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-09-30 23:28:45,456 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 432 transitions. [2018-09-30 23:28:45,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2018-09-30 23:28:45,458 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:28:45,458 INFO L375 BasicCegarLoop]: trace histogram [107, 107, 106, 106, 1, 1, 1, 1] [2018-09-30 23:28:45,459 INFO L423 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:28:45,459 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:28:45,459 INFO L82 PathProgramCache]: Analyzing trace with hash 913503699, now seen corresponding path program 106 times [2018-09-30 23:28:45,459 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:28:45,459 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:28:45,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:28:45,460 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:28:45,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:28:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:28:49,861 INFO L134 CoverageAnalysis]: Checked inductivity of 22684 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 11342 trivial. 0 not checked. [2018-09-30 23:28:49,861 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:28:49,862 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 23:28:49,869 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 23:28:50,041 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 23:28:50,042 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:28:50,047 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:28:50,158 INFO L134 CoverageAnalysis]: Checked inductivity of 22684 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 11342 trivial. 0 not checked. [2018-09-30 23:28:50,179 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:28:50,180 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-09-30 23:28:50,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-09-30 23:28:50,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-09-30 23:28:50,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-09-30 23:28:50,181 INFO L87 Difference]: Start difference. First operand 431 states and 432 transitions. Second operand 109 states. [2018-09-30 23:28:51,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:28:51,876 INFO L93 Difference]: Finished difference Result 651 states and 654 transitions. [2018-09-30 23:28:51,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-09-30 23:28:51,876 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 430 [2018-09-30 23:28:51,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:28:51,877 INFO L225 Difference]: With dead ends: 651 [2018-09-30 23:28:51,877 INFO L226 Difference]: Without dead ends: 435 [2018-09-30 23:28:51,878 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-09-30 23:28:51,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2018-09-30 23:28:51,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2018-09-30 23:28:51,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2018-09-30 23:28:51,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 436 transitions. [2018-09-30 23:28:51,883 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 436 transitions. Word has length 430 [2018-09-30 23:28:51,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:28:51,884 INFO L480 AbstractCegarLoop]: Abstraction has 435 states and 436 transitions. [2018-09-30 23:28:51,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-09-30 23:28:51,884 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 436 transitions. [2018-09-30 23:28:51,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2018-09-30 23:28:51,885 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:28:51,885 INFO L375 BasicCegarLoop]: trace histogram [108, 108, 107, 107, 1, 1, 1, 1] [2018-09-30 23:28:51,885 INFO L423 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:28:51,886 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:28:51,886 INFO L82 PathProgramCache]: Analyzing trace with hash 671514695, now seen corresponding path program 107 times [2018-09-30 23:28:51,886 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:28:51,886 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:28:51,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:28:51,886 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:28:51,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:28:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:28:56,504 INFO L134 CoverageAnalysis]: Checked inductivity of 23112 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 11556 trivial. 0 not checked. [2018-09-30 23:28:56,504 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:28:56,504 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 23:28:56,513 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 23:29:29,884 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 108 check-sat command(s) [2018-09-30 23:29:29,885 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:29:29,903 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:29:30,002 INFO L134 CoverageAnalysis]: Checked inductivity of 23112 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 11556 trivial. 0 not checked. [2018-09-30 23:29:30,043 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:29:30,043 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-09-30 23:29:30,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-09-30 23:29:30,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-09-30 23:29:30,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-09-30 23:29:30,045 INFO L87 Difference]: Start difference. First operand 435 states and 436 transitions. Second operand 110 states. [2018-09-30 23:29:32,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:29:32,002 INFO L93 Difference]: Finished difference Result 657 states and 660 transitions. [2018-09-30 23:29:32,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-09-30 23:29:32,003 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 434 [2018-09-30 23:29:32,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:29:32,004 INFO L225 Difference]: With dead ends: 657 [2018-09-30 23:29:32,004 INFO L226 Difference]: Without dead ends: 439 [2018-09-30 23:29:32,005 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 434 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-09-30 23:29:32,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2018-09-30 23:29:32,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2018-09-30 23:29:32,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2018-09-30 23:29:32,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 440 transitions. [2018-09-30 23:29:32,011 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 440 transitions. Word has length 434 [2018-09-30 23:29:32,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:29:32,011 INFO L480 AbstractCegarLoop]: Abstraction has 439 states and 440 transitions. [2018-09-30 23:29:32,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-09-30 23:29:32,011 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 440 transitions. [2018-09-30 23:29:32,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2018-09-30 23:29:32,012 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:29:32,013 INFO L375 BasicCegarLoop]: trace histogram [109, 109, 108, 108, 1, 1, 1, 1] [2018-09-30 23:29:32,013 INFO L423 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:29:32,013 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:29:32,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1170517829, now seen corresponding path program 108 times [2018-09-30 23:29:32,013 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:29:32,013 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:29:32,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:29:32,014 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:29:32,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:29:32,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:29:36,701 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 11772 trivial. 0 not checked. [2018-09-30 23:29:36,702 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:29:36,702 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 [2018-09-30 23:29:36,710 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 23:29:52,299 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 109 check-sat command(s) [2018-09-30 23:29:52,300 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:29:52,328 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:29:52,459 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 11772 trivial. 0 not checked. [2018-09-30 23:29:52,494 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:29:52,494 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2018-09-30 23:29:52,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-09-30 23:29:52,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-09-30 23:29:52,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-09-30 23:29:52,496 INFO L87 Difference]: Start difference. First operand 439 states and 440 transitions. Second operand 111 states. [2018-09-30 23:29:54,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:29:54,423 INFO L93 Difference]: Finished difference Result 663 states and 666 transitions. [2018-09-30 23:29:54,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-09-30 23:29:54,424 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 438 [2018-09-30 23:29:54,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:29:54,425 INFO L225 Difference]: With dead ends: 663 [2018-09-30 23:29:54,425 INFO L226 Difference]: Without dead ends: 443 [2018-09-30 23:29:54,426 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-09-30 23:29:54,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2018-09-30 23:29:54,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2018-09-30 23:29:54,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2018-09-30 23:29:54,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 444 transitions. [2018-09-30 23:29:54,432 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 444 transitions. Word has length 438 [2018-09-30 23:29:54,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:29:54,432 INFO L480 AbstractCegarLoop]: Abstraction has 443 states and 444 transitions. [2018-09-30 23:29:54,432 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-09-30 23:29:54,432 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 444 transitions. [2018-09-30 23:29:54,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2018-09-30 23:29:54,433 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:29:54,434 INFO L375 BasicCegarLoop]: trace histogram [110, 110, 109, 109, 1, 1, 1, 1] [2018-09-30 23:29:54,434 INFO L423 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:29:54,434 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:29:54,434 INFO L82 PathProgramCache]: Analyzing trace with hash 412509999, now seen corresponding path program 109 times [2018-09-30 23:29:54,434 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:29:54,434 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:29:54,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:29:54,435 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:29:54,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:29:54,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:29:59,157 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 11990 trivial. 0 not checked. [2018-09-30 23:29:59,157 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:29:59,157 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 23:29:59,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:29:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:29:59,349 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:29:59,474 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 11990 trivial. 0 not checked. [2018-09-30 23:29:59,495 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:29:59,495 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2018-09-30 23:29:59,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-09-30 23:29:59,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-09-30 23:29:59,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-09-30 23:29:59,497 INFO L87 Difference]: Start difference. First operand 443 states and 444 transitions. Second operand 112 states. [2018-09-30 23:30:01,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:30:01,694 INFO L93 Difference]: Finished difference Result 669 states and 672 transitions. [2018-09-30 23:30:01,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-09-30 23:30:01,694 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 442 [2018-09-30 23:30:01,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:30:01,695 INFO L225 Difference]: With dead ends: 669 [2018-09-30 23:30:01,696 INFO L226 Difference]: Without dead ends: 447 [2018-09-30 23:30:01,697 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-09-30 23:30:01,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2018-09-30 23:30:01,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2018-09-30 23:30:01,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2018-09-30 23:30:01,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 448 transitions. [2018-09-30 23:30:01,703 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 448 transitions. Word has length 442 [2018-09-30 23:30:01,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:30:01,704 INFO L480 AbstractCegarLoop]: Abstraction has 447 states and 448 transitions. [2018-09-30 23:30:01,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-09-30 23:30:01,704 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 448 transitions. [2018-09-30 23:30:01,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2018-09-30 23:30:01,705 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:30:01,705 INFO L375 BasicCegarLoop]: trace histogram [111, 111, 110, 110, 1, 1, 1, 1] [2018-09-30 23:30:01,706 INFO L423 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:30:01,706 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:30:01,706 INFO L82 PathProgramCache]: Analyzing trace with hash 505201571, now seen corresponding path program 110 times [2018-09-30 23:30:01,706 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:30:01,706 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:30:01,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:30:01,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:30:01,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:30:01,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:30:06,511 INFO L134 CoverageAnalysis]: Checked inductivity of 24420 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 12210 trivial. 0 not checked. [2018-09-30 23:30:06,512 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:30:06,512 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 [2018-09-30 23:30:06,519 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 23:30:06,701 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 23:30:06,701 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:30:06,707 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:30:06,841 INFO L134 CoverageAnalysis]: Checked inductivity of 24420 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 12210 trivial. 0 not checked. [2018-09-30 23:30:06,861 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:30:06,862 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 112 [2018-09-30 23:30:06,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-09-30 23:30:06,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-09-30 23:30:06,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-09-30 23:30:06,863 INFO L87 Difference]: Start difference. First operand 447 states and 448 transitions. Second operand 113 states. [2018-09-30 23:30:08,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:30:08,853 INFO L93 Difference]: Finished difference Result 675 states and 678 transitions. [2018-09-30 23:30:08,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-09-30 23:30:08,853 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 446 [2018-09-30 23:30:08,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:30:08,854 INFO L225 Difference]: With dead ends: 675 [2018-09-30 23:30:08,854 INFO L226 Difference]: Without dead ends: 451 [2018-09-30 23:30:08,855 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-09-30 23:30:08,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2018-09-30 23:30:08,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2018-09-30 23:30:08,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2018-09-30 23:30:08,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 452 transitions. [2018-09-30 23:30:08,860 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 452 transitions. Word has length 446 [2018-09-30 23:30:08,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:30:08,860 INFO L480 AbstractCegarLoop]: Abstraction has 451 states and 452 transitions. [2018-09-30 23:30:08,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-09-30 23:30:08,860 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 452 transitions. [2018-09-30 23:30:08,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2018-09-30 23:30:08,862 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:30:08,862 INFO L375 BasicCegarLoop]: trace histogram [112, 112, 111, 111, 1, 1, 1, 1] [2018-09-30 23:30:08,862 INFO L423 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:30:08,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:30:08,862 INFO L82 PathProgramCache]: Analyzing trace with hash 357787159, now seen corresponding path program 111 times [2018-09-30 23:30:08,862 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:30:08,862 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:30:08,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:30:08,863 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:30:08,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:30:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:30:13,780 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 12432 trivial. 0 not checked. [2018-09-30 23:30:13,780 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:30:13,780 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 [2018-09-30 23:30:13,786 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 23:30:34,715 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 112 check-sat command(s) [2018-09-30 23:30:34,716 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:30:34,725 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:30:34,850 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 12432 trivial. 0 not checked. [2018-09-30 23:30:34,878 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:30:34,879 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2018-09-30 23:30:34,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-09-30 23:30:34,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-09-30 23:30:34,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-09-30 23:30:34,881 INFO L87 Difference]: Start difference. First operand 451 states and 452 transitions. Second operand 114 states. [2018-09-30 23:30:37,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:30:37,326 INFO L93 Difference]: Finished difference Result 681 states and 684 transitions. [2018-09-30 23:30:37,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-09-30 23:30:37,326 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 450 [2018-09-30 23:30:37,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:30:37,327 INFO L225 Difference]: With dead ends: 681 [2018-09-30 23:30:37,328 INFO L226 Difference]: Without dead ends: 455 [2018-09-30 23:30:37,328 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-09-30 23:30:37,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2018-09-30 23:30:37,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 455. [2018-09-30 23:30:37,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2018-09-30 23:30:37,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 456 transitions. [2018-09-30 23:30:37,333 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 456 transitions. Word has length 450 [2018-09-30 23:30:37,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:30:37,334 INFO L480 AbstractCegarLoop]: Abstraction has 455 states and 456 transitions. [2018-09-30 23:30:37,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-09-30 23:30:37,334 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 456 transitions. [2018-09-30 23:30:37,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-09-30 23:30:37,335 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:30:37,335 INFO L375 BasicCegarLoop]: trace histogram [113, 113, 112, 112, 1, 1, 1, 1] [2018-09-30 23:30:37,336 INFO L423 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:30:37,336 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:30:37,336 INFO L82 PathProgramCache]: Analyzing trace with hash 2017414795, now seen corresponding path program 112 times [2018-09-30 23:30:37,336 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:30:37,336 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:30:37,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:30:37,337 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:30:37,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:30:37,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:30:42,305 INFO L134 CoverageAnalysis]: Checked inductivity of 25312 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 12656 trivial. 0 not checked. [2018-09-30 23:30:42,305 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:30:42,305 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 23:30:42,311 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 23:30:42,495 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 23:30:42,495 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:30:42,501 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:30:42,611 INFO L134 CoverageAnalysis]: Checked inductivity of 25312 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 12656 trivial. 0 not checked. [2018-09-30 23:30:42,631 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:30:42,631 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 114 [2018-09-30 23:30:42,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-09-30 23:30:42,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-09-30 23:30:42,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-09-30 23:30:42,633 INFO L87 Difference]: Start difference. First operand 455 states and 456 transitions. Second operand 115 states. [2018-09-30 23:30:44,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:30:44,738 INFO L93 Difference]: Finished difference Result 687 states and 690 transitions. [2018-09-30 23:30:44,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-09-30 23:30:44,738 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 454 [2018-09-30 23:30:44,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:30:44,739 INFO L225 Difference]: With dead ends: 687 [2018-09-30 23:30:44,739 INFO L226 Difference]: Without dead ends: 459 [2018-09-30 23:30:44,740 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-09-30 23:30:44,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2018-09-30 23:30:44,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 459. [2018-09-30 23:30:44,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2018-09-30 23:30:44,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 460 transitions. [2018-09-30 23:30:44,745 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 460 transitions. Word has length 454 [2018-09-30 23:30:44,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:30:44,745 INFO L480 AbstractCegarLoop]: Abstraction has 459 states and 460 transitions. [2018-09-30 23:30:44,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-09-30 23:30:44,745 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 460 transitions. [2018-09-30 23:30:44,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2018-09-30 23:30:44,747 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:30:44,747 INFO L375 BasicCegarLoop]: trace histogram [114, 114, 113, 113, 1, 1, 1, 1] [2018-09-30 23:30:44,747 INFO L423 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:30:44,747 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:30:44,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1335526145, now seen corresponding path program 113 times [2018-09-30 23:30:44,747 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:30:44,748 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:30:44,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:30:44,748 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:30:44,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:30:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:30:49,858 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 12882 trivial. 0 not checked. [2018-09-30 23:30:49,859 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:30:49,859 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 [2018-09-30 23:30:49,866 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 23:31:28,862 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 114 check-sat command(s) [2018-09-30 23:31:28,862 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:31:28,879 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:31:29,000 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 12882 trivial. 0 not checked. [2018-09-30 23:31:29,033 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:31:29,033 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 115 [2018-09-30 23:31:29,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-09-30 23:31:29,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-09-30 23:31:29,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-09-30 23:31:29,035 INFO L87 Difference]: Start difference. First operand 459 states and 460 transitions. Second operand 116 states. [2018-09-30 23:31:31,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:31:31,428 INFO L93 Difference]: Finished difference Result 693 states and 696 transitions. [2018-09-30 23:31:31,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-09-30 23:31:31,429 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 458 [2018-09-30 23:31:31,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:31:31,430 INFO L225 Difference]: With dead ends: 693 [2018-09-30 23:31:31,430 INFO L226 Difference]: Without dead ends: 463 [2018-09-30 23:31:31,431 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-09-30 23:31:31,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2018-09-30 23:31:31,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 463. [2018-09-30 23:31:31,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2018-09-30 23:31:31,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 464 transitions. [2018-09-30 23:31:31,437 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 464 transitions. Word has length 458 [2018-09-30 23:31:31,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:31:31,437 INFO L480 AbstractCegarLoop]: Abstraction has 463 states and 464 transitions. [2018-09-30 23:31:31,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-09-30 23:31:31,437 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 464 transitions. [2018-09-30 23:31:31,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2018-09-30 23:31:31,438 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:31:31,439 INFO L375 BasicCegarLoop]: trace histogram [115, 115, 114, 114, 1, 1, 1, 1] [2018-09-30 23:31:31,439 INFO L423 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:31:31,439 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:31:31,439 INFO L82 PathProgramCache]: Analyzing trace with hash -691342989, now seen corresponding path program 114 times [2018-09-30 23:31:31,439 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:31:31,439 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:31:31,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:31:31,440 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:31:31,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:31:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:31:36,564 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 0 proven. 13110 refuted. 0 times theorem prover too weak. 13110 trivial. 0 not checked. [2018-09-30 23:31:36,564 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:31:36,564 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 [2018-09-30 23:31:36,571 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 23:31:50,704 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 115 check-sat command(s) [2018-09-30 23:31:50,704 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:31:50,720 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:31:50,861 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 0 proven. 13110 refuted. 0 times theorem prover too weak. 13110 trivial. 0 not checked. [2018-09-30 23:31:50,891 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:31:50,891 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116] total 116 [2018-09-30 23:31:50,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-09-30 23:31:50,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-09-30 23:31:50,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-09-30 23:31:50,893 INFO L87 Difference]: Start difference. First operand 463 states and 464 transitions. Second operand 117 states. [2018-09-30 23:31:53,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:31:53,269 INFO L93 Difference]: Finished difference Result 699 states and 702 transitions. [2018-09-30 23:31:53,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-09-30 23:31:53,270 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 462 [2018-09-30 23:31:53,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:31:53,271 INFO L225 Difference]: With dead ends: 699 [2018-09-30 23:31:53,271 INFO L226 Difference]: Without dead ends: 467 [2018-09-30 23:31:53,271 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-09-30 23:31:53,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2018-09-30 23:31:53,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 467. [2018-09-30 23:31:53,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2018-09-30 23:31:53,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 468 transitions. [2018-09-30 23:31:53,276 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 468 transitions. Word has length 462 [2018-09-30 23:31:53,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:31:53,276 INFO L480 AbstractCegarLoop]: Abstraction has 467 states and 468 transitions. [2018-09-30 23:31:53,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-09-30 23:31:53,277 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 468 transitions. [2018-09-30 23:31:53,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2018-09-30 23:31:53,278 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:31:53,278 INFO L375 BasicCegarLoop]: trace histogram [116, 116, 115, 115, 1, 1, 1, 1] [2018-09-30 23:31:53,278 INFO L423 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:31:53,279 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:31:53,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1945414631, now seen corresponding path program 115 times [2018-09-30 23:31:53,279 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:31:53,279 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:31:53,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:31:53,280 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:31:53,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:31:53,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:31:58,417 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 0 proven. 13340 refuted. 0 times theorem prover too weak. 13340 trivial. 0 not checked. [2018-09-30 23:31:58,417 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:31:58,417 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 23:31:58,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:31:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:31:58,645 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:31:58,767 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 0 proven. 13340 refuted. 0 times theorem prover too weak. 13340 trivial. 0 not checked. [2018-09-30 23:31:58,788 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:31:58,788 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117] total 117 [2018-09-30 23:31:58,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-09-30 23:31:58,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-09-30 23:31:58,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-09-30 23:31:58,790 INFO L87 Difference]: Start difference. First operand 467 states and 468 transitions. Second operand 118 states. [2018-09-30 23:32:01,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:32:01,535 INFO L93 Difference]: Finished difference Result 705 states and 708 transitions. [2018-09-30 23:32:01,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-09-30 23:32:01,535 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 466 [2018-09-30 23:32:01,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:32:01,537 INFO L225 Difference]: With dead ends: 705 [2018-09-30 23:32:01,537 INFO L226 Difference]: Without dead ends: 471 [2018-09-30 23:32:01,539 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-09-30 23:32:01,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2018-09-30 23:32:01,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 471. [2018-09-30 23:32:01,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2018-09-30 23:32:01,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 472 transitions. [2018-09-30 23:32:01,545 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 472 transitions. Word has length 466 [2018-09-30 23:32:01,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:32:01,545 INFO L480 AbstractCegarLoop]: Abstraction has 471 states and 472 transitions. [2018-09-30 23:32:01,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-09-30 23:32:01,545 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 472 transitions. [2018-09-30 23:32:01,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2018-09-30 23:32:01,547 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:32:01,547 INFO L375 BasicCegarLoop]: trace histogram [117, 117, 116, 116, 1, 1, 1, 1] [2018-09-30 23:32:01,547 INFO L423 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:32:01,547 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:32:01,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1072147547, now seen corresponding path program 116 times [2018-09-30 23:32:01,548 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:32:01,548 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:32:01,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:32:01,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:32:01,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:32:01,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:32:06,917 INFO L134 CoverageAnalysis]: Checked inductivity of 27144 backedges. 0 proven. 13572 refuted. 0 times theorem prover too weak. 13572 trivial. 0 not checked. [2018-09-30 23:32:06,917 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:32:06,918 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 [2018-09-30 23:32:06,926 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 23:32:07,115 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 23:32:07,116 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:32:07,122 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:32:07,246 INFO L134 CoverageAnalysis]: Checked inductivity of 27144 backedges. 0 proven. 13572 refuted. 0 times theorem prover too weak. 13572 trivial. 0 not checked. [2018-09-30 23:32:07,267 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:32:07,267 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118] total 118 [2018-09-30 23:32:07,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-09-30 23:32:07,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-09-30 23:32:07,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-09-30 23:32:07,269 INFO L87 Difference]: Start difference. First operand 471 states and 472 transitions. Second operand 119 states. [2018-09-30 23:32:09,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:32:09,761 INFO L93 Difference]: Finished difference Result 711 states and 714 transitions. [2018-09-30 23:32:09,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-09-30 23:32:09,761 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 470 [2018-09-30 23:32:09,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:32:09,762 INFO L225 Difference]: With dead ends: 711 [2018-09-30 23:32:09,762 INFO L226 Difference]: Without dead ends: 475 [2018-09-30 23:32:09,763 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-09-30 23:32:09,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2018-09-30 23:32:09,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2018-09-30 23:32:09,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2018-09-30 23:32:09,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 476 transitions. [2018-09-30 23:32:09,769 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 476 transitions. Word has length 470 [2018-09-30 23:32:09,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:32:09,769 INFO L480 AbstractCegarLoop]: Abstraction has 475 states and 476 transitions. [2018-09-30 23:32:09,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-09-30 23:32:09,770 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 476 transitions. [2018-09-30 23:32:09,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2018-09-30 23:32:09,771 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:32:09,771 INFO L375 BasicCegarLoop]: trace histogram [118, 118, 117, 117, 1, 1, 1, 1] [2018-09-30 23:32:09,771 INFO L423 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:32:09,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:32:09,772 INFO L82 PathProgramCache]: Analyzing trace with hash -500632881, now seen corresponding path program 117 times [2018-09-30 23:32:09,772 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:32:09,772 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:32:09,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:32:09,772 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:32:09,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:32:09,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:32:15,209 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 0 proven. 13806 refuted. 0 times theorem prover too weak. 13806 trivial. 0 not checked. [2018-09-30 23:32:15,210 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:32:15,210 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 [2018-09-30 23:32:15,218 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 23:32:41,002 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 118 check-sat command(s) [2018-09-30 23:32:41,002 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:32:41,014 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:32:41,139 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 0 proven. 13806 refuted. 0 times theorem prover too weak. 13806 trivial. 0 not checked. [2018-09-30 23:32:41,169 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:32:41,169 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119] total 119 [2018-09-30 23:32:41,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-09-30 23:32:41,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-09-30 23:32:41,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-09-30 23:32:41,171 INFO L87 Difference]: Start difference. First operand 475 states and 476 transitions. Second operand 120 states. [2018-09-30 23:32:44,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:32:44,227 INFO L93 Difference]: Finished difference Result 717 states and 720 transitions. [2018-09-30 23:32:44,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-09-30 23:32:44,227 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 474 [2018-09-30 23:32:44,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:32:44,228 INFO L225 Difference]: With dead ends: 717 [2018-09-30 23:32:44,229 INFO L226 Difference]: Without dead ends: 479 [2018-09-30 23:32:44,229 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-09-30 23:32:44,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2018-09-30 23:32:44,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2018-09-30 23:32:44,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-09-30 23:32:44,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 480 transitions. [2018-09-30 23:32:44,235 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 480 transitions. Word has length 474 [2018-09-30 23:32:44,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:32:44,236 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 480 transitions. [2018-09-30 23:32:44,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-09-30 23:32:44,236 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 480 transitions. [2018-09-30 23:32:44,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2018-09-30 23:32:44,237 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:32:44,237 INFO L375 BasicCegarLoop]: trace histogram [119, 119, 118, 118, 1, 1, 1, 1] [2018-09-30 23:32:44,238 INFO L423 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:32:44,238 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:32:44,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1312981181, now seen corresponding path program 118 times [2018-09-30 23:32:44,238 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:32:44,238 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:32:44,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:32:44,239 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:32:44,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:32:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:32:50,198 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 14042 refuted. 0 times theorem prover too weak. 14042 trivial. 0 not checked. [2018-09-30 23:32:50,198 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:32:50,198 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 23:32:50,206 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 23:32:50,395 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 23:32:50,396 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:32:50,402 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:32:50,527 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 14042 refuted. 0 times theorem prover too weak. 14042 trivial. 0 not checked. [2018-09-30 23:32:50,549 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:32:50,549 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 120] total 120 [2018-09-30 23:32:50,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-09-30 23:32:50,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-09-30 23:32:50,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-09-30 23:32:50,551 INFO L87 Difference]: Start difference. First operand 479 states and 480 transitions. Second operand 121 states. [2018-09-30 23:32:52,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:32:52,799 INFO L93 Difference]: Finished difference Result 723 states and 726 transitions. [2018-09-30 23:32:52,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-09-30 23:32:52,799 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 478 [2018-09-30 23:32:52,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:32:52,800 INFO L225 Difference]: With dead ends: 723 [2018-09-30 23:32:52,800 INFO L226 Difference]: Without dead ends: 483 [2018-09-30 23:32:52,801 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-09-30 23:32:52,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2018-09-30 23:32:52,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2018-09-30 23:32:52,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2018-09-30 23:32:52,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 484 transitions. [2018-09-30 23:32:52,806 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 484 transitions. Word has length 478 [2018-09-30 23:32:52,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:32:52,807 INFO L480 AbstractCegarLoop]: Abstraction has 483 states and 484 transitions. [2018-09-30 23:32:52,807 INFO L481 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-09-30 23:32:52,807 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 484 transitions. [2018-09-30 23:32:52,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2018-09-30 23:32:52,808 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:32:52,809 INFO L375 BasicCegarLoop]: trace histogram [120, 120, 119, 119, 1, 1, 1, 1] [2018-09-30 23:32:52,809 INFO L423 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:32:52,809 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:32:52,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1965707703, now seen corresponding path program 119 times [2018-09-30 23:32:52,809 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:32:52,809 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:32:52,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:32:52,810 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:32:52,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:32:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:32:58,416 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 14280 refuted. 0 times theorem prover too weak. 14280 trivial. 0 not checked. [2018-09-30 23:32:58,417 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:32:58,417 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:32:58,423 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 23:33:44,368 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 120 check-sat command(s) [2018-09-30 23:33:44,369 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:33:44,383 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:33:44,492 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 14280 refuted. 0 times theorem prover too weak. 14280 trivial. 0 not checked. [2018-09-30 23:33:44,530 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:33:44,531 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 121] total 121 [2018-09-30 23:33:44,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-09-30 23:33:44,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-09-30 23:33:44,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-09-30 23:33:44,532 INFO L87 Difference]: Start difference. First operand 483 states and 484 transitions. Second operand 122 states. [2018-09-30 23:33:47,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:33:47,250 INFO L93 Difference]: Finished difference Result 729 states and 732 transitions. [2018-09-30 23:33:47,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-09-30 23:33:47,251 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 482 [2018-09-30 23:33:47,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:33:47,252 INFO L225 Difference]: With dead ends: 729 [2018-09-30 23:33:47,252 INFO L226 Difference]: Without dead ends: 487 [2018-09-30 23:33:47,254 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-09-30 23:33:47,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2018-09-30 23:33:47,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 487. [2018-09-30 23:33:47,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2018-09-30 23:33:47,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 488 transitions. [2018-09-30 23:33:47,261 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 488 transitions. Word has length 482 [2018-09-30 23:33:47,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:33:47,261 INFO L480 AbstractCegarLoop]: Abstraction has 487 states and 488 transitions. [2018-09-30 23:33:47,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-09-30 23:33:47,262 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 488 transitions. [2018-09-30 23:33:47,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2018-09-30 23:33:47,263 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:33:47,263 INFO L375 BasicCegarLoop]: trace histogram [121, 121, 120, 120, 1, 1, 1, 1] [2018-09-30 23:33:47,263 INFO L423 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:33:47,264 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:33:47,264 INFO L82 PathProgramCache]: Analyzing trace with hash 578054699, now seen corresponding path program 120 times [2018-09-30 23:33:47,264 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:33:47,264 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:33:47,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:33:47,264 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:33:47,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:33:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:33:52,838 INFO L134 CoverageAnalysis]: Checked inductivity of 29040 backedges. 0 proven. 14520 refuted. 0 times theorem prover too weak. 14520 trivial. 0 not checked. [2018-09-30 23:33:52,838 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:33:52,838 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:33:52,846 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 23:34:21,420 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 121 check-sat command(s) [2018-09-30 23:34:21,421 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:34:21,445 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:34:21,556 INFO L134 CoverageAnalysis]: Checked inductivity of 29040 backedges. 0 proven. 14520 refuted. 0 times theorem prover too weak. 14520 trivial. 0 not checked. [2018-09-30 23:34:21,587 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:34:21,587 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 122] total 122 [2018-09-30 23:34:21,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-09-30 23:34:21,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-09-30 23:34:21,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-09-30 23:34:21,589 INFO L87 Difference]: Start difference. First operand 487 states and 488 transitions. Second operand 123 states. [2018-09-30 23:34:23,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:34:23,933 INFO L93 Difference]: Finished difference Result 735 states and 738 transitions. [2018-09-30 23:34:23,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-09-30 23:34:23,934 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 486 [2018-09-30 23:34:23,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:34:23,935 INFO L225 Difference]: With dead ends: 735 [2018-09-30 23:34:23,935 INFO L226 Difference]: Without dead ends: 491 [2018-09-30 23:34:23,936 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 607 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-09-30 23:34:23,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2018-09-30 23:34:23,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 491. [2018-09-30 23:34:23,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2018-09-30 23:34:23,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 492 transitions. [2018-09-30 23:34:23,942 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 492 transitions. Word has length 486 [2018-09-30 23:34:23,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:34:23,942 INFO L480 AbstractCegarLoop]: Abstraction has 491 states and 492 transitions. [2018-09-30 23:34:23,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-09-30 23:34:23,942 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 492 transitions. [2018-09-30 23:34:23,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2018-09-30 23:34:23,944 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:34:23,944 INFO L375 BasicCegarLoop]: trace histogram [122, 122, 121, 121, 1, 1, 1, 1] [2018-09-30 23:34:23,944 INFO L423 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:34:23,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:34:23,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1625241441, now seen corresponding path program 121 times [2018-09-30 23:34:23,944 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:34:23,944 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:34:23,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:34:23,945 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:34:23,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:34:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:34:29,576 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 0 proven. 14762 refuted. 0 times theorem prover too weak. 14762 trivial. 0 not checked. [2018-09-30 23:34:29,577 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:34:29,577 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:34:29,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:34:29,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:34:29,792 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:34:29,950 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 0 proven. 14762 refuted. 0 times theorem prover too weak. 14762 trivial. 0 not checked. [2018-09-30 23:34:29,971 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:34:29,971 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 123] total 123 [2018-09-30 23:34:29,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-09-30 23:34:29,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-09-30 23:34:29,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-09-30 23:34:29,974 INFO L87 Difference]: Start difference. First operand 491 states and 492 transitions. Second operand 124 states. [2018-09-30 23:34:33,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:34:33,378 INFO L93 Difference]: Finished difference Result 741 states and 744 transitions. [2018-09-30 23:34:33,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-09-30 23:34:33,379 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 490 [2018-09-30 23:34:33,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:34:33,380 INFO L225 Difference]: With dead ends: 741 [2018-09-30 23:34:33,380 INFO L226 Difference]: Without dead ends: 495 [2018-09-30 23:34:33,381 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-09-30 23:34:33,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2018-09-30 23:34:33,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 495. [2018-09-30 23:34:33,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2018-09-30 23:34:33,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 496 transitions. [2018-09-30 23:34:33,387 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 496 transitions. Word has length 490 [2018-09-30 23:34:33,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:34:33,387 INFO L480 AbstractCegarLoop]: Abstraction has 495 states and 496 transitions. [2018-09-30 23:34:33,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-09-30 23:34:33,387 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 496 transitions. [2018-09-30 23:34:33,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2018-09-30 23:34:33,389 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:34:33,389 INFO L375 BasicCegarLoop]: trace histogram [123, 123, 122, 122, 1, 1, 1, 1] [2018-09-30 23:34:33,390 INFO L423 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:34:33,390 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:34:33,390 INFO L82 PathProgramCache]: Analyzing trace with hash -2144047853, now seen corresponding path program 122 times [2018-09-30 23:34:33,390 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:34:33,390 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:34:33,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:34:33,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:34:33,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:34:33,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:34:39,206 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 0 proven. 15006 refuted. 0 times theorem prover too weak. 15006 trivial. 0 not checked. [2018-09-30 23:34:39,206 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:34:39,206 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:34:39,215 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 23:34:39,423 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 23:34:39,423 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:34:39,431 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:34:39,588 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 0 proven. 15006 refuted. 0 times theorem prover too weak. 15006 trivial. 0 not checked. [2018-09-30 23:34:39,609 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:34:39,609 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 124] total 124 [2018-09-30 23:34:39,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-09-30 23:34:39,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-09-30 23:34:39,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-09-30 23:34:39,610 INFO L87 Difference]: Start difference. First operand 495 states and 496 transitions. Second operand 125 states. [2018-09-30 23:34:42,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:34:42,884 INFO L93 Difference]: Finished difference Result 747 states and 750 transitions. [2018-09-30 23:34:42,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-09-30 23:34:42,885 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 494 [2018-09-30 23:34:42,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:34:42,886 INFO L225 Difference]: With dead ends: 747 [2018-09-30 23:34:42,886 INFO L226 Difference]: Without dead ends: 499 [2018-09-30 23:34:42,887 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 494 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-09-30 23:34:42,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2018-09-30 23:34:42,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 499. [2018-09-30 23:34:42,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2018-09-30 23:34:42,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 500 transitions. [2018-09-30 23:34:42,895 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 500 transitions. Word has length 494 [2018-09-30 23:34:42,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:34:42,896 INFO L480 AbstractCegarLoop]: Abstraction has 499 states and 500 transitions. [2018-09-30 23:34:42,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-09-30 23:34:42,896 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 500 transitions. [2018-09-30 23:34:42,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2018-09-30 23:34:42,899 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:34:42,899 INFO L375 BasicCegarLoop]: trace histogram [124, 124, 123, 123, 1, 1, 1, 1] [2018-09-30 23:34:42,899 INFO L423 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:34:42,899 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:34:42,900 INFO L82 PathProgramCache]: Analyzing trace with hash -902539385, now seen corresponding path program 123 times [2018-09-30 23:34:42,900 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:34:42,900 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:34:42,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:34:42,901 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:34:42,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:34:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-09-30 23:34:47,204 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-30 23:34:47,209 WARN L206 ceAbstractionStarter]: Timeout [2018-09-30 23:34:47,209 INFO L202 PluginConnector]: Adding new model array3.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.09 11:34:47 BoogieIcfgContainer [2018-09-30 23:34:47,209 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-30 23:34:47,210 INFO L168 Benchmark]: Toolchain (without parser) took 817963.99 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 137.4 MB). Free memory was 1.4 GB in the beginning and 968.5 MB in the end (delta: 465.7 MB). Peak memory consumption was 603.1 MB. Max. memory is 7.1 GB. [2018-09-30 23:34:47,212 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. [2018-09-30 23:34:47,212 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.01 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. [2018-09-30 23:34:47,212 INFO L168 Benchmark]: Boogie Preprocessor took 19.80 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. [2018-09-30 23:34:47,212 INFO L168 Benchmark]: RCFGBuilder took 387.17 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. [2018-09-30 23:34:47,213 INFO L168 Benchmark]: TraceAbstraction took 817504.50 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 137.4 MB). Free memory was 1.4 GB in the beginning and 968.5 MB in the end (delta: 444.6 MB). Peak memory consumption was 582.0 MB. Max. memory is 7.1 GB. [2018-09-30 23:34:47,214 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 45.01 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 19.80 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 387.17 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 817504.50 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 137.4 MB). Free memory was 1.4 GB in the beginning and 968.5 MB in the end (delta: 444.6 MB). Peak memory consumption was 582.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 56). Cancelled while BasicCegarLoop was analyzing trace of length 499 with TraceHistMax 124, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateComparison was comparing new predicate (quantifier-free) to 110 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. TIMEOUT Result, 817.4s OverallTime, 124 OverallIterations, 124 TraceHistogramMax, 106.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 738 SDtfs, 16455 SDslu, 18438 SDs, 0 SdLazy, 18684 SolverSat, 16846 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 43.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38371 GetRequests, 30745 SyntacticMatches, 0 SemanticMatches, 7626 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 256.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=499occurred in iteration=123, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 123 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 2.9s SsaConstructionTime, 423.7s SatisfiabilityAnalysisTime, 268.9s InterpolantComputationTime, 61494 NumberOfCodeBlocks, 61494 NumberOfCodeBlocksAsserted, 3986 NumberOfCheckSat, 61249 ConstructedInterpolants, 0 QuantifiedInterpolants, 40367161 SizeOfPredicates, 0 NumberOfNonLiveVariables, 92110 ConjunctsInSsa, 7747 ConjunctsInUnsatCore, 245 InterpolantComputations, 1 PerfectInterpolantSequences, 1240496/2480992 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/array3.i_4.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-30_23-34-47-223.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/array3.i_4.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-30_23-34-47-223.csv Completed graceful shutdown