java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg-ArraysIntegefied.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c372c2b [2018-10-02 12:18:47,085 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-02 12:18:47,087 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-02 12:18:47,099 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-02 12:18:47,099 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-02 12:18:47,100 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-02 12:18:47,102 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-02 12:18:47,103 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-02 12:18:47,105 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-02 12:18:47,106 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-02 12:18:47,107 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-02 12:18:47,107 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-02 12:18:47,108 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-02 12:18:47,109 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-02 12:18:47,110 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-02 12:18:47,111 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-02 12:18:47,112 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-02 12:18:47,113 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-02 12:18:47,115 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-02 12:18:47,117 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-02 12:18:47,118 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-02 12:18:47,119 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-02 12:18:47,122 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-02 12:18:47,131 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-10-02 12:18:47,150 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-02 12:18:47,151 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-02 12:18:47,152 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-02 12:18:47,152 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-02 12:18:47,154 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-02 12:18:47,154 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-02 12:18:47,154 INFO L133 SettingsManager]: * Use SBE=true [2018-10-02 12:18:47,155 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-02 12:18:47,155 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-02 12:18:47,155 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-02 12:18:47,155 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-02 12:18:47,155 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-02 12:18:47,157 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-02 12:18:47,157 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-02 12:18:47,157 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-02 12:18:47,157 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-02 12:18:47,157 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-02 12:18:47,158 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-02 12:18:47,158 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-02 12:18:47,158 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-02 12:18:47,158 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-02 12:18:47,160 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-02 12:18:47,160 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-02 12:18:47,160 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-02 12:18:47,160 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-02 12:18:47,160 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-02 12:18:47,161 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-02 12:18:47,161 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-02 12:18:47,161 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-02 12:18:47,161 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-02 12:18:47,161 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-02 12:18:47,203 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-02 12:18:47,217 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-02 12:18:47,220 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-02 12:18:47,222 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-02 12:18:47,223 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-02 12:18:47,223 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg-ArraysIntegefied.bpl [2018-10-02 12:18:47,224 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg-ArraysIntegefied.bpl' [2018-10-02 12:18:47,273 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-02 12:18:47,276 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-02 12:18:47,277 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-02 12:18:47,277 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-02 12:18:47,277 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-02 12:18:47,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:18:47" (1/1) ... [2018-10-02 12:18:47,312 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:18:47" (1/1) ... [2018-10-02 12:18:47,317 WARN L165 Inliner]: Program contained no entry procedure! [2018-10-02 12:18:47,317 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-10-02 12:18:47,317 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-10-02 12:18:47,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-02 12:18:47,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-02 12:18:47,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-02 12:18:47,321 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-02 12:18:47,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:18:47" (1/1) ... [2018-10-02 12:18:47,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:18:47" (1/1) ... [2018-10-02 12:18:47,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:18:47" (1/1) ... [2018-10-02 12:18:47,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:18:47" (1/1) ... [2018-10-02 12:18:47,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:18:47" (1/1) ... [2018-10-02 12:18:47,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:18:47" (1/1) ... [2018-10-02 12:18:47,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:18:47" (1/1) ... [2018-10-02 12:18:47,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-02 12:18:47,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-02 12:18:47,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-02 12:18:47,345 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-02 12:18:47,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:18:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-02 12:18:47,420 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-10-02 12:18:47,420 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-02 12:18:47,421 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-02 12:18:47,677 INFO L337 CfgBuilder]: Using library mode [2018-10-02 12:18:47,678 INFO L202 PluginConnector]: Adding new model Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 12:18:47 BoogieIcfgContainer [2018-10-02 12:18:47,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-02 12:18:47,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-02 12:18:47,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-02 12:18:47,687 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-02 12:18:47,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:18:47" (1/2) ... [2018-10-02 12:18:47,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e3e9e1 and model type Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 12:18:47, skipping insertion in model container [2018-10-02 12:18:47,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 12:18:47" (2/2) ... [2018-10-02 12:18:47,691 INFO L112 eAbstractionObserver]: Analyzing ICFG Luxembourg-ArraysIntegefied.bpl [2018-10-02 12:18:47,701 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-02 12:18:47,711 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-02 12:18:47,759 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-02 12:18:47,759 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-02 12:18:47,760 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-02 12:18:47,760 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-02 12:18:47,760 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-02 12:18:47,760 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-02 12:18:47,760 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-02 12:18:47,761 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-02 12:18:47,761 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-02 12:18:47,777 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2018-10-02 12:18:47,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-02 12:18:47,783 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:47,784 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-10-02 12:18:47,786 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:47,792 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:47,793 INFO L82 PathProgramCache]: Analyzing trace with hash 890493448, now seen corresponding path program 1 times [2018-10-02 12:18:47,795 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:47,796 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:47,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:47,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:18:47,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:47,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:47,984 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-02 12:18:47,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-02 12:18:47,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-02 12:18:48,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-02 12:18:48,011 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:48,014 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2018-10-02 12:18:48,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:48,180 INFO L93 Difference]: Finished difference Result 22 states and 31 transitions. [2018-10-02 12:18:48,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-02 12:18:48,185 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2018-10-02 12:18:48,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:48,200 INFO L225 Difference]: With dead ends: 22 [2018-10-02 12:18:48,200 INFO L226 Difference]: Without dead ends: 10 [2018-10-02 12:18:48,203 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:18:48,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-02 12:18:48,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-02 12:18:48,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-02 12:18:48,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-10-02 12:18:48,237 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2018-10-02 12:18:48,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:48,237 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-10-02 12:18:48,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-02 12:18:48,238 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-10-02 12:18:48,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-02 12:18:48,238 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:48,238 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-10-02 12:18:48,239 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:48,239 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:48,239 INFO L82 PathProgramCache]: Analyzing trace with hash 892342412, now seen corresponding path program 1 times [2018-10-02 12:18:48,239 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:48,239 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:48,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:48,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:18:48,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:48,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:48,274 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-02 12:18:48,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-02 12:18:48,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-02 12:18:48,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-02 12:18:48,277 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:48,277 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 3 states. [2018-10-02 12:18:48,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:48,317 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-02 12:18:48,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-02 12:18:48,317 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2018-10-02 12:18:48,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:48,318 INFO L225 Difference]: With dead ends: 13 [2018-10-02 12:18:48,318 INFO L226 Difference]: Without dead ends: 11 [2018-10-02 12:18:48,319 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:18:48,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-02 12:18:48,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-02 12:18:48,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-02 12:18:48,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-02 12:18:48,322 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2018-10-02 12:18:48,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:48,322 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-02 12:18:48,323 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-02 12:18:48,323 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-02 12:18:48,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-02 12:18:48,323 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:48,324 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-02 12:18:48,324 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:48,324 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:48,324 INFO L82 PathProgramCache]: Analyzing trace with hash -391235530, now seen corresponding path program 1 times [2018-10-02 12:18:48,324 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:48,325 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:48,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:48,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:18:48,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:48,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:48,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:48,432 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:48,432 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:18:48,443 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:18:48,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:48,460 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:48,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:48,550 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:48,551 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-02 12:18:48,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-02 12:18:48,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-02 12:18:48,552 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:48,552 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2018-10-02 12:18:48,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:48,670 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-02 12:18:48,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-02 12:18:48,672 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-10-02 12:18:48,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:48,673 INFO L225 Difference]: With dead ends: 17 [2018-10-02 12:18:48,674 INFO L226 Difference]: Without dead ends: 15 [2018-10-02 12:18:48,674 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:18:48,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-02 12:18:48,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-02 12:18:48,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-02 12:18:48,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-02 12:18:48,680 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 10 [2018-10-02 12:18:48,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:48,680 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-02 12:18:48,680 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-02 12:18:48,681 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-02 12:18:48,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-02 12:18:48,681 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:48,683 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-10-02 12:18:48,683 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:48,684 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:48,684 INFO L82 PathProgramCache]: Analyzing trace with hash -602113312, now seen corresponding path program 2 times [2018-10-02 12:18:48,684 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:48,684 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:48,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:48,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:18:48,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:48,757 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:48,758 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:48,758 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:18:48,776 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:18:48,812 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:18:48,812 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:48,814 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:49,037 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:49,057 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:49,057 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-02 12:18:49,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-02 12:18:49,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-02 12:18:49,058 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:49,058 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 5 states. [2018-10-02 12:18:49,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:49,128 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-02 12:18:49,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-02 12:18:49,128 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-10-02 12:18:49,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:49,130 INFO L225 Difference]: With dead ends: 21 [2018-10-02 12:18:49,130 INFO L226 Difference]: Without dead ends: 19 [2018-10-02 12:18:49,131 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime [2018-10-02 12:18:49,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-02 12:18:49,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-02 12:18:49,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-02 12:18:49,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-02 12:18:49,135 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 14 [2018-10-02 12:18:49,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:49,135 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-02 12:18:49,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-02 12:18:49,136 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-02 12:18:49,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-02 12:18:49,137 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:49,137 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2018-10-02 12:18:49,137 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:49,137 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:49,138 INFO L82 PathProgramCache]: Analyzing trace with hash 334846090, now seen corresponding path program 3 times [2018-10-02 12:18:49,138 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:49,138 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:49,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:49,139 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:49,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:49,226 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:49,226 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:49,227 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:18:49,234 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:18:49,256 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-02 12:18:49,256 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:49,258 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:49,431 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:49,451 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:49,452 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-02 12:18:49,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-02 12:18:49,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-02 12:18:49,453 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:49,453 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 6 states. [2018-10-02 12:18:49,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:49,539 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-02 12:18:49,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-02 12:18:49,539 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-10-02 12:18:49,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:49,540 INFO L225 Difference]: With dead ends: 25 [2018-10-02 12:18:49,541 INFO L226 Difference]: Without dead ends: 23 [2018-10-02 12:18:49,541 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime [2018-10-02 12:18:49,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-02 12:18:49,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-02 12:18:49,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-02 12:18:49,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-02 12:18:49,545 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 18 [2018-10-02 12:18:49,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:49,546 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-02 12:18:49,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-02 12:18:49,546 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-02 12:18:49,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-02 12:18:49,547 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:49,547 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2018-10-02 12:18:49,547 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:49,547 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:49,548 INFO L82 PathProgramCache]: Analyzing trace with hash -747417292, now seen corresponding path program 4 times [2018-10-02 12:18:49,548 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:49,548 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:49,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:49,549 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:49,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:49,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:49,634 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:49,634 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:49,635 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:18:49,645 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:18:49,658 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:18:49,659 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:49,660 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:49,785 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:49,811 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:49,812 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-02 12:18:49,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-02 12:18:49,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-02 12:18:49,812 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:49,813 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 7 states. [2018-10-02 12:18:49,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:49,905 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-02 12:18:49,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-02 12:18:49,905 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2018-10-02 12:18:49,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:49,907 INFO L225 Difference]: With dead ends: 29 [2018-10-02 12:18:49,907 INFO L226 Difference]: Without dead ends: 27 [2018-10-02 12:18:49,908 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:18:49,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-02 12:18:49,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-02 12:18:49,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-02 12:18:49,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-02 12:18:49,912 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 22 [2018-10-02 12:18:49,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:49,913 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-02 12:18:49,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-02 12:18:49,913 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-02 12:18:49,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-02 12:18:49,914 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:49,914 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2018-10-02 12:18:49,915 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:49,915 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:49,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1016128734, now seen corresponding path program 5 times [2018-10-02 12:18:49,915 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:49,915 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:49,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:49,916 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:49,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:50,094 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:50,095 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:50,095 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:18:50,105 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:18:50,206 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-02 12:18:50,207 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:50,209 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:50,576 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:50,598 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:50,598 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:18:50,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:18:50,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:18:50,599 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:50,599 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 8 states. [2018-10-02 12:18:50,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:50,664 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-02 12:18:50,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:18:50,664 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2018-10-02 12:18:50,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:50,665 INFO L225 Difference]: With dead ends: 33 [2018-10-02 12:18:50,666 INFO L226 Difference]: Without dead ends: 31 [2018-10-02 12:18:50,666 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.0s impTime [2018-10-02 12:18:50,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-02 12:18:50,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-02 12:18:50,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-02 12:18:50,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-02 12:18:50,671 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 26 [2018-10-02 12:18:50,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:50,671 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-02 12:18:50,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:18:50,672 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-02 12:18:50,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-02 12:18:50,672 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:50,672 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2018-10-02 12:18:50,673 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:50,673 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:50,673 INFO L82 PathProgramCache]: Analyzing trace with hash -267873400, now seen corresponding path program 6 times [2018-10-02 12:18:50,673 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:50,673 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:50,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:50,674 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:50,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:50,816 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:50,817 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:50,817 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:18:50,826 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:18:50,840 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-02 12:18:50,840 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:50,844 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:51,001 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:51,024 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:51,024 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:18:51,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:18:51,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:18:51,025 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:51,025 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 9 states. [2018-10-02 12:18:51,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:51,112 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-02 12:18:51,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:18:51,113 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2018-10-02 12:18:51,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:51,114 INFO L225 Difference]: With dead ends: 37 [2018-10-02 12:18:51,114 INFO L226 Difference]: Without dead ends: 35 [2018-10-02 12:18:51,115 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime [2018-10-02 12:18:51,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-02 12:18:51,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-02 12:18:51,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-02 12:18:51,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-02 12:18:51,120 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 30 [2018-10-02 12:18:51,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:51,121 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-02 12:18:51,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:18:51,121 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-02 12:18:51,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-02 12:18:51,122 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:51,122 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2018-10-02 12:18:51,122 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:51,122 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:51,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1386947278, now seen corresponding path program 7 times [2018-10-02 12:18:51,123 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:51,123 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:51,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:51,124 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:51,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:51,315 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:51,316 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:51,316 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:18:51,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:18:51,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:51,349 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:51,495 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:51,516 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:51,516 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:18:51,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:18:51,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:18:51,517 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:51,518 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 10 states. [2018-10-02 12:18:51,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:51,593 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-02 12:18:51,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:18:51,594 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2018-10-02 12:18:51,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:51,595 INFO L225 Difference]: With dead ends: 41 [2018-10-02 12:18:51,595 INFO L226 Difference]: Without dead ends: 39 [2018-10-02 12:18:51,595 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime [2018-10-02 12:18:51,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-02 12:18:51,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-02 12:18:51,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-02 12:18:51,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-02 12:18:51,600 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 34 [2018-10-02 12:18:51,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:51,600 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-02 12:18:51,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:18:51,601 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-02 12:18:51,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-02 12:18:51,602 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:51,602 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2018-10-02 12:18:51,602 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:51,602 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:51,603 INFO L82 PathProgramCache]: Analyzing trace with hash -223329828, now seen corresponding path program 8 times [2018-10-02 12:18:51,603 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:51,603 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:51,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:51,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:18:51,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:51,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:51,864 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:51,865 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:51,865 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:18:51,875 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:18:51,894 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:18:51,894 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:51,898 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:51,981 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:52,002 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:52,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:18:52,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:18:52,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:18:52,003 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:52,003 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 11 states. [2018-10-02 12:18:52,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:52,062 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-02 12:18:52,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:18:52,063 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2018-10-02 12:18:52,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:52,064 INFO L225 Difference]: With dead ends: 45 [2018-10-02 12:18:52,064 INFO L226 Difference]: Without dead ends: 43 [2018-10-02 12:18:52,065 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime [2018-10-02 12:18:52,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-02 12:18:52,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-02 12:18:52,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-02 12:18:52,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-02 12:18:52,070 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 38 [2018-10-02 12:18:52,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:52,071 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-02 12:18:52,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:18:52,071 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-02 12:18:52,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-02 12:18:52,072 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:52,072 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2018-10-02 12:18:52,072 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:52,073 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:52,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1659551354, now seen corresponding path program 9 times [2018-10-02 12:18:52,073 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:52,073 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:52,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:52,074 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:52,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:52,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:52,205 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:52,206 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:52,206 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:18:52,217 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:18:52,247 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-10-02 12:18:52,247 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:52,249 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:52,387 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:52,407 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:52,407 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-02 12:18:52,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-02 12:18:52,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-02 12:18:52,408 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:52,408 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 12 states. [2018-10-02 12:18:52,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:52,605 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-02 12:18:52,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-02 12:18:52,605 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2018-10-02 12:18:52,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:52,606 INFO L225 Difference]: With dead ends: 49 [2018-10-02 12:18:52,607 INFO L226 Difference]: Without dead ends: 47 [2018-10-02 12:18:52,607 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime [2018-10-02 12:18:52,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-02 12:18:52,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-02 12:18:52,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-02 12:18:52,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-02 12:18:52,612 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 42 [2018-10-02 12:18:52,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:52,613 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-02 12:18:52,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-02 12:18:52,613 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-02 12:18:52,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-02 12:18:52,614 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:52,614 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2018-10-02 12:18:52,614 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:52,615 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:52,615 INFO L82 PathProgramCache]: Analyzing trace with hash -2009179088, now seen corresponding path program 10 times [2018-10-02 12:18:52,615 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:52,615 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:52,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:52,616 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:52,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:52,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:52,828 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:52,828 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:52,828 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:18:52,836 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:18:52,871 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:18:52,872 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:52,874 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:52,990 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:53,010 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:53,011 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-02 12:18:53,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-02 12:18:53,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-02 12:18:53,011 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:53,012 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 13 states. [2018-10-02 12:18:53,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:53,123 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-02 12:18:53,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-02 12:18:53,126 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2018-10-02 12:18:53,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:53,127 INFO L225 Difference]: With dead ends: 53 [2018-10-02 12:18:53,127 INFO L226 Difference]: Without dead ends: 51 [2018-10-02 12:18:53,127 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime [2018-10-02 12:18:53,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-02 12:18:53,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-02 12:18:53,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-02 12:18:53,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-02 12:18:53,133 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 46 [2018-10-02 12:18:53,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:53,133 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-02 12:18:53,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-02 12:18:53,134 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-02 12:18:53,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-02 12:18:53,135 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:53,135 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2018-10-02 12:18:53,136 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:53,136 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:53,136 INFO L82 PathProgramCache]: Analyzing trace with hash 782635482, now seen corresponding path program 11 times [2018-10-02 12:18:53,136 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:53,136 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:53,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:53,137 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:53,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:53,306 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:53,306 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:53,306 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:18:53,315 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:18:53,341 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-10-02 12:18:53,342 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:53,344 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:53,618 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:53,638 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:53,639 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-02 12:18:53,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-02 12:18:53,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-02 12:18:53,640 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:53,640 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 14 states. [2018-10-02 12:18:53,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:53,764 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-02 12:18:53,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-02 12:18:53,764 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 50 [2018-10-02 12:18:53,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:53,765 INFO L225 Difference]: With dead ends: 57 [2018-10-02 12:18:53,765 INFO L226 Difference]: Without dead ends: 55 [2018-10-02 12:18:53,765 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.0s impTime [2018-10-02 12:18:53,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-02 12:18:53,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-02 12:18:53,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-02 12:18:53,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-02 12:18:53,769 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 50 [2018-10-02 12:18:53,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:53,770 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-02 12:18:53,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-02 12:18:53,770 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-02 12:18:53,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-02 12:18:53,771 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:53,771 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2018-10-02 12:18:53,771 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:53,771 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:53,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1233576580, now seen corresponding path program 12 times [2018-10-02 12:18:53,772 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:53,772 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:53,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:53,773 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:53,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:53,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:53,994 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:53,994 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:53,994 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:18:54,001 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:18:54,036 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-02 12:18:54,036 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:54,039 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:54,183 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:54,204 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:54,205 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-10-02 12:18:54,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-02 12:18:54,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-02 12:18:54,205 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:54,205 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 15 states. [2018-10-02 12:18:54,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:54,271 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-02 12:18:54,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-02 12:18:54,272 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2018-10-02 12:18:54,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:54,273 INFO L225 Difference]: With dead ends: 61 [2018-10-02 12:18:54,273 INFO L226 Difference]: Without dead ends: 59 [2018-10-02 12:18:54,274 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime [2018-10-02 12:18:54,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-02 12:18:54,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-02 12:18:54,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-02 12:18:54,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-02 12:18:54,278 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 54 [2018-10-02 12:18:54,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:54,278 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-02 12:18:54,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-02 12:18:54,278 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-02 12:18:54,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-02 12:18:54,279 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:54,279 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2018-10-02 12:18:54,279 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:54,280 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:54,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1893420590, now seen corresponding path program 13 times [2018-10-02 12:18:54,280 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:54,280 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:54,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:54,281 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:54,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:54,523 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:54,523 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:54,523 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:18:54,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:18:54,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:54,562 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:54,949 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:54,971 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:54,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-02 12:18:54,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-02 12:18:54,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-02 12:18:54,972 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:54,972 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 16 states. [2018-10-02 12:18:55,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:55,066 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-02 12:18:55,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-02 12:18:55,067 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2018-10-02 12:18:55,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:55,067 INFO L225 Difference]: With dead ends: 65 [2018-10-02 12:18:55,067 INFO L226 Difference]: Without dead ends: 63 [2018-10-02 12:18:55,068 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.1s impTime [2018-10-02 12:18:55,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-02 12:18:55,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-02 12:18:55,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-02 12:18:55,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-02 12:18:55,073 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 58 [2018-10-02 12:18:55,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:55,074 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-02 12:18:55,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-02 12:18:55,074 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-02 12:18:55,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-02 12:18:55,075 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:55,075 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2018-10-02 12:18:55,076 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:55,076 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:55,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1151478568, now seen corresponding path program 14 times [2018-10-02 12:18:55,076 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:55,076 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:55,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:55,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:18:55,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:55,262 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:55,262 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:55,262 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:18:55,271 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:18:55,313 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:18:55,314 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:55,316 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:55,445 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:55,465 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:55,465 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-02 12:18:55,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-02 12:18:55,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-02 12:18:55,466 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:55,466 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 17 states. [2018-10-02 12:18:55,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:55,592 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-02 12:18:55,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-02 12:18:55,593 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 62 [2018-10-02 12:18:55,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:55,593 INFO L225 Difference]: With dead ends: 69 [2018-10-02 12:18:55,594 INFO L226 Difference]: Without dead ends: 67 [2018-10-02 12:18:55,594 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime [2018-10-02 12:18:55,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-02 12:18:55,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-02 12:18:55,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-02 12:18:55,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-02 12:18:55,599 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 62 [2018-10-02 12:18:55,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:55,599 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-02 12:18:55,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-02 12:18:55,600 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-02 12:18:55,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-02 12:18:55,600 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:55,601 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2018-10-02 12:18:55,601 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:55,601 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:55,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1586034306, now seen corresponding path program 15 times [2018-10-02 12:18:55,601 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:55,601 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:55,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:55,602 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:55,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:55,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:56,004 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:56,005 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:56,005 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:18:56,013 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:18:56,071 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-10-02 12:18:56,071 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:56,075 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:56,333 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:56,354 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:56,354 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-02 12:18:56,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-02 12:18:56,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-02 12:18:56,355 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:56,355 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 18 states. [2018-10-02 12:18:56,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:56,486 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-02 12:18:56,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-02 12:18:56,487 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 66 [2018-10-02 12:18:56,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:56,488 INFO L225 Difference]: With dead ends: 73 [2018-10-02 12:18:56,488 INFO L226 Difference]: Without dead ends: 71 [2018-10-02 12:18:56,489 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.2s impTime [2018-10-02 12:18:56,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-02 12:18:56,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-02 12:18:56,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-02 12:18:56,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-02 12:18:56,494 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 66 [2018-10-02 12:18:56,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:56,495 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-02 12:18:56,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-02 12:18:56,495 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-02 12:18:56,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-02 12:18:56,496 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:56,496 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 1, 1, 1, 1, 1, 1] [2018-10-02 12:18:56,496 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:56,496 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:56,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1318531884, now seen corresponding path program 16 times [2018-10-02 12:18:56,497 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:56,497 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:56,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:56,498 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:56,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:56,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:56,807 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:56,807 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:56,807 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:18:56,815 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:18:56,830 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:18:56,830 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:56,832 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:57,388 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:57,408 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:57,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-02 12:18:57,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-02 12:18:57,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-02 12:18:57,409 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:57,409 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 19 states. [2018-10-02 12:18:57,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:57,532 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-02 12:18:57,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-02 12:18:57,532 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 70 [2018-10-02 12:18:57,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:57,533 INFO L225 Difference]: With dead ends: 77 [2018-10-02 12:18:57,533 INFO L226 Difference]: Without dead ends: 75 [2018-10-02 12:18:57,533 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.1s impTime [2018-10-02 12:18:57,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-02 12:18:57,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-02 12:18:57,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-02 12:18:57,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-02 12:18:57,539 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 70 [2018-10-02 12:18:57,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:57,539 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-02 12:18:57,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-02 12:18:57,539 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-02 12:18:57,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-02 12:18:57,540 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:57,540 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 1, 1, 1, 1, 1, 1] [2018-10-02 12:18:57,541 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:57,541 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:57,541 INFO L82 PathProgramCache]: Analyzing trace with hash -561837354, now seen corresponding path program 17 times [2018-10-02 12:18:57,541 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:57,541 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:57,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:57,542 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:57,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:57,971 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:57,971 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:57,971 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:18:57,980 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:18:58,007 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-10-02 12:18:58,007 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:58,009 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:58,156 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:58,177 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:58,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-02 12:18:58,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-02 12:18:58,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-02 12:18:58,178 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:58,179 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 20 states. [2018-10-02 12:18:58,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:58,299 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-10-02 12:18:58,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-02 12:18:58,300 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 74 [2018-10-02 12:18:58,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:58,300 INFO L225 Difference]: With dead ends: 81 [2018-10-02 12:18:58,301 INFO L226 Difference]: Without dead ends: 79 [2018-10-02 12:18:58,301 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime [2018-10-02 12:18:58,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-02 12:18:58,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-02 12:18:58,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-02 12:18:58,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-10-02 12:18:58,306 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 74 [2018-10-02 12:18:58,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:58,306 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-10-02 12:18:58,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-02 12:18:58,306 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-10-02 12:18:58,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-02 12:18:58,307 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:58,307 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1] [2018-10-02 12:18:58,308 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:58,308 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:58,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1611070848, now seen corresponding path program 18 times [2018-10-02 12:18:58,308 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:58,308 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:58,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:58,309 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:58,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:58,817 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:58,817 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:58,817 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:18:58,825 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:18:58,849 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-02 12:18:58,850 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:58,851 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:58,985 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:59,005 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:59,005 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-10-02 12:18:59,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-02 12:18:59,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-02 12:18:59,006 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:59,006 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 21 states. [2018-10-02 12:18:59,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:59,136 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-10-02 12:18:59,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-02 12:18:59,137 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 78 [2018-10-02 12:18:59,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:59,138 INFO L225 Difference]: With dead ends: 85 [2018-10-02 12:18:59,138 INFO L226 Difference]: Without dead ends: 83 [2018-10-02 12:18:59,139 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime [2018-10-02 12:18:59,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-02 12:18:59,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-02 12:18:59,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-02 12:18:59,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-02 12:18:59,143 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 78 [2018-10-02 12:18:59,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:59,143 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-02 12:18:59,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-02 12:18:59,152 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-02 12:18:59,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-02 12:18:59,153 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:59,153 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 1, 1, 1, 1, 1, 1] [2018-10-02 12:18:59,155 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:59,156 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:59,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1013085398, now seen corresponding path program 19 times [2018-10-02 12:18:59,156 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:59,156 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:59,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:59,157 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:59,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:59,418 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:59,418 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:59,418 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:18:59,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:18:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:59,442 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:59,642 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:59,662 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:59,662 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-02 12:18:59,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-02 12:18:59,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-02 12:18:59,663 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:59,663 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 22 states. [2018-10-02 12:18:59,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:59,768 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-02 12:18:59,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-02 12:18:59,768 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 82 [2018-10-02 12:18:59,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:59,769 INFO L225 Difference]: With dead ends: 89 [2018-10-02 12:18:59,770 INFO L226 Difference]: Without dead ends: 87 [2018-10-02 12:18:59,770 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime [2018-10-02 12:18:59,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-02 12:18:59,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-02 12:18:59,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-02 12:18:59,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-10-02 12:18:59,775 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 82 [2018-10-02 12:18:59,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:59,775 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-10-02 12:18:59,775 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-02 12:18:59,775 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-10-02 12:18:59,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-02 12:18:59,776 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:59,776 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 1, 1, 1, 1, 1, 1] [2018-10-02 12:18:59,777 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:59,777 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:59,777 INFO L82 PathProgramCache]: Analyzing trace with hash 947991508, now seen corresponding path program 20 times [2018-10-02 12:18:59,777 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:59,777 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:59,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:59,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:18:59,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:00,198 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:00,198 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:00,198 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:00,206 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:19:00,234 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:19:00,235 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:00,237 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:00,395 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:00,417 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:00,417 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-02 12:19:00,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-02 12:19:00,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-02 12:19:00,418 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:00,418 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 23 states. [2018-10-02 12:19:00,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:00,501 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-10-02 12:19:00,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-02 12:19:00,504 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 86 [2018-10-02 12:19:00,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:00,506 INFO L225 Difference]: With dead ends: 93 [2018-10-02 12:19:00,506 INFO L226 Difference]: Without dead ends: 91 [2018-10-02 12:19:00,506 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime [2018-10-02 12:19:00,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-02 12:19:00,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-02 12:19:00,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-02 12:19:00,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-10-02 12:19:00,509 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 86 [2018-10-02 12:19:00,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:00,509 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-10-02 12:19:00,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-02 12:19:00,509 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-10-02 12:19:00,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-02 12:19:00,510 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:00,511 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 1, 1, 1, 1, 1, 1] [2018-10-02 12:19:00,511 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:00,511 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:00,511 INFO L82 PathProgramCache]: Analyzing trace with hash -861112450, now seen corresponding path program 21 times [2018-10-02 12:19:00,511 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:00,511 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:00,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:00,512 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:00,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:02,022 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:02,022 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:02,023 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-02 12:19:02,037 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:02,145 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-10-02 12:19:02,145 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:02,147 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:02,321 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:02,341 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:02,341 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-02 12:19:02,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-02 12:19:02,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-02 12:19:02,342 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:02,342 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 24 states. [2018-10-02 12:19:02,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:02,489 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-10-02 12:19:02,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-02 12:19:02,490 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 90 [2018-10-02 12:19:02,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:02,491 INFO L225 Difference]: With dead ends: 97 [2018-10-02 12:19:02,491 INFO L226 Difference]: Without dead ends: 95 [2018-10-02 12:19:02,491 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.1s impTime [2018-10-02 12:19:02,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-02 12:19:02,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-02 12:19:02,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-02 12:19:02,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-10-02 12:19:02,495 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 90 [2018-10-02 12:19:02,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:02,495 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-10-02 12:19:02,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-02 12:19:02,496 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-10-02 12:19:02,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-02 12:19:02,497 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:02,497 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2018-10-02 12:19:02,497 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:02,497 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:02,497 INFO L82 PathProgramCache]: Analyzing trace with hash 215602728, now seen corresponding path program 22 times [2018-10-02 12:19:02,497 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:02,498 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:02,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:02,498 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:02,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:02,807 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:02,808 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:02,808 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:02,816 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:19:02,857 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:19:02,857 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:02,860 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:03,110 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:03,131 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:03,132 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-10-02 12:19:03,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-02 12:19:03,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-02 12:19:03,132 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:03,133 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 25 states. [2018-10-02 12:19:03,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:03,251 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-02 12:19:03,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-02 12:19:03,252 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 94 [2018-10-02 12:19:03,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:03,253 INFO L225 Difference]: With dead ends: 101 [2018-10-02 12:19:03,253 INFO L226 Difference]: Without dead ends: 99 [2018-10-02 12:19:03,253 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.1s impTime [2018-10-02 12:19:03,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-02 12:19:03,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-02 12:19:03,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-02 12:19:03,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-10-02 12:19:03,256 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 94 [2018-10-02 12:19:03,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:03,257 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-10-02 12:19:03,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-02 12:19:03,257 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-10-02 12:19:03,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-02 12:19:03,257 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:03,257 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 1, 1, 1, 1, 1, 1] [2018-10-02 12:19:03,258 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:03,258 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:03,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1534865454, now seen corresponding path program 23 times [2018-10-02 12:19:03,258 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:03,258 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:03,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:03,259 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:03,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:03,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:03,748 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:03,748 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:03,756 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:19:03,797 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-10-02 12:19:03,798 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:03,800 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:04,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:04,157 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:04,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-02 12:19:04,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-02 12:19:04,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-02 12:19:04,158 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:04,158 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 26 states. [2018-10-02 12:19:04,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:04,308 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-02 12:19:04,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-02 12:19:04,310 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 98 [2018-10-02 12:19:04,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:04,311 INFO L225 Difference]: With dead ends: 105 [2018-10-02 12:19:04,311 INFO L226 Difference]: Without dead ends: 103 [2018-10-02 12:19:04,312 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.3s impTime [2018-10-02 12:19:04,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-02 12:19:04,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-02 12:19:04,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-02 12:19:04,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-10-02 12:19:04,315 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 98 [2018-10-02 12:19:04,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:04,315 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-10-02 12:19:04,315 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-02 12:19:04,315 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-10-02 12:19:04,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-02 12:19:04,316 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:04,316 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 1, 1, 1, 1, 1, 1] [2018-10-02 12:19:04,317 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:04,317 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:04,317 INFO L82 PathProgramCache]: Analyzing trace with hash -35330948, now seen corresponding path program 24 times [2018-10-02 12:19:04,317 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:04,317 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:04,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:04,318 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:04,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:04,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:04,690 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:04,690 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:04,698 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:19:04,734 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-02 12:19:04,734 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:04,737 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:04,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:05,001 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:05,001 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-10-02 12:19:05,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-02 12:19:05,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-02 12:19:05,002 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:05,002 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 27 states. [2018-10-02 12:19:05,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:05,091 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-02 12:19:05,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-02 12:19:05,092 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 102 [2018-10-02 12:19:05,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:05,093 INFO L225 Difference]: With dead ends: 109 [2018-10-02 12:19:05,093 INFO L226 Difference]: Without dead ends: 107 [2018-10-02 12:19:05,093 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime [2018-10-02 12:19:05,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-02 12:19:05,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-02 12:19:05,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-02 12:19:05,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-02 12:19:05,097 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 102 [2018-10-02 12:19:05,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:05,097 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-02 12:19:05,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-02 12:19:05,097 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-02 12:19:05,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-02 12:19:05,098 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:05,098 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2018-10-02 12:19:05,098 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:05,098 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:05,098 INFO L82 PathProgramCache]: Analyzing trace with hash -503868378, now seen corresponding path program 25 times [2018-10-02 12:19:05,098 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:05,098 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:05,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:05,099 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:05,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:05,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:05,593 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:05,593 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:05,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:05,637 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:05,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:05,875 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:05,875 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-02 12:19:05,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-02 12:19:05,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-02 12:19:05,876 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:05,876 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 28 states. [2018-10-02 12:19:06,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:06,025 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-10-02 12:19:06,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-02 12:19:06,025 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 106 [2018-10-02 12:19:06,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:06,026 INFO L225 Difference]: With dead ends: 113 [2018-10-02 12:19:06,026 INFO L226 Difference]: Without dead ends: 111 [2018-10-02 12:19:06,027 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime [2018-10-02 12:19:06,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-02 12:19:06,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-02 12:19:06,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-02 12:19:06,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-10-02 12:19:06,030 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 106 [2018-10-02 12:19:06,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:06,030 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-10-02 12:19:06,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-02 12:19:06,030 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-10-02 12:19:06,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-02 12:19:06,031 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:06,031 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 1, 1, 1, 1, 1, 1] [2018-10-02 12:19:06,031 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:06,031 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:06,031 INFO L82 PathProgramCache]: Analyzing trace with hash 410410704, now seen corresponding path program 26 times [2018-10-02 12:19:06,032 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:06,032 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:06,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:06,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:06,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:06,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:06,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:06,658 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:06,658 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:06,666 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:19:06,689 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:19:06,689 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:06,692 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:06,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:06,881 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:06,881 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-02 12:19:06,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-02 12:19:06,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-02 12:19:06,881 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:06,882 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 29 states. [2018-10-02 12:19:07,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:07,101 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-10-02 12:19:07,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-02 12:19:07,102 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 110 [2018-10-02 12:19:07,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:07,103 INFO L225 Difference]: With dead ends: 117 [2018-10-02 12:19:07,103 INFO L226 Difference]: Without dead ends: 115 [2018-10-02 12:19:07,104 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime [2018-10-02 12:19:07,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-10-02 12:19:07,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-10-02 12:19:07,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-02 12:19:07,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-10-02 12:19:07,110 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 110 [2018-10-02 12:19:07,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:07,111 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-10-02 12:19:07,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-02 12:19:07,111 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-10-02 12:19:07,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-02 12:19:07,111 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:07,112 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 1, 1, 1, 1, 1, 1] [2018-10-02 12:19:07,112 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:07,112 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:07,112 INFO L82 PathProgramCache]: Analyzing trace with hash 131843194, now seen corresponding path program 27 times [2018-10-02 12:19:07,112 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:07,112 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:07,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:07,113 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:07,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:07,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:08,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:08,050 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:08,051 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:08,060 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:19:08,092 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-10-02 12:19:08,093 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:08,095 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:08,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:08,326 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:08,326 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-02 12:19:08,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-02 12:19:08,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-02 12:19:08,327 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:08,327 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 30 states. [2018-10-02 12:19:08,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:08,486 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-10-02 12:19:08,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-02 12:19:08,486 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 114 [2018-10-02 12:19:08,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:08,487 INFO L225 Difference]: With dead ends: 121 [2018-10-02 12:19:08,488 INFO L226 Difference]: Without dead ends: 119 [2018-10-02 12:19:08,488 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.6s impTime [2018-10-02 12:19:08,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-10-02 12:19:08,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-10-02 12:19:08,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-02 12:19:08,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-10-02 12:19:08,491 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 114 [2018-10-02 12:19:08,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:08,492 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-10-02 12:19:08,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-02 12:19:08,492 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-10-02 12:19:08,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-02 12:19:08,493 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:08,493 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 1, 1, 1, 1, 1, 1] [2018-10-02 12:19:08,493 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:08,493 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:08,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1432503588, now seen corresponding path program 28 times [2018-10-02 12:19:08,493 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:08,494 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:08,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:08,494 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:08,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:08,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:09,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:09,367 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:09,367 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:09,378 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:19:09,402 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:19:09,403 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:09,405 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:09,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:09,640 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:09,640 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-02 12:19:09,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-02 12:19:09,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-02 12:19:09,641 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:09,641 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 31 states. [2018-10-02 12:19:09,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:09,861 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-10-02 12:19:09,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-02 12:19:09,862 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 118 [2018-10-02 12:19:09,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:09,863 INFO L225 Difference]: With dead ends: 125 [2018-10-02 12:19:09,864 INFO L226 Difference]: Without dead ends: 123 [2018-10-02 12:19:09,864 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.6s impTime [2018-10-02 12:19:09,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-10-02 12:19:09,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-10-02 12:19:09,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-10-02 12:19:09,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-10-02 12:19:09,868 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 118 [2018-10-02 12:19:09,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:09,868 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-10-02 12:19:09,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-02 12:19:09,869 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-10-02 12:19:09,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-02 12:19:09,870 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:09,870 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 1, 1, 1, 1, 1, 1] [2018-10-02 12:19:09,870 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:09,870 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:09,870 INFO L82 PathProgramCache]: Analyzing trace with hash -2063310642, now seen corresponding path program 29 times [2018-10-02 12:19:09,871 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:09,871 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:09,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:09,872 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:09,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:10,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:10,607 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:10,607 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:10,614 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:19:10,652 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-10-02 12:19:10,652 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:10,655 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:10,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:10,866 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:10,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-02 12:19:10,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-02 12:19:10,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-02 12:19:10,867 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:10,867 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 32 states. [2018-10-02 12:19:11,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:11,072 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-10-02 12:19:11,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-02 12:19:11,072 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 122 [2018-10-02 12:19:11,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:11,073 INFO L225 Difference]: With dead ends: 129 [2018-10-02 12:19:11,073 INFO L226 Difference]: Without dead ends: 127 [2018-10-02 12:19:11,074 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime [2018-10-02 12:19:11,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-10-02 12:19:11,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-10-02 12:19:11,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-10-02 12:19:11,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-10-02 12:19:11,076 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 122 [2018-10-02 12:19:11,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:11,076 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-10-02 12:19:11,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-02 12:19:11,076 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-10-02 12:19:11,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-02 12:19:11,077 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:11,077 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 1, 1, 1, 1, 1, 1] [2018-10-02 12:19:11,077 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:11,077 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:11,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1719888008, now seen corresponding path program 30 times [2018-10-02 12:19:11,078 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:11,078 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:11,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:11,079 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:11,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:11,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:11,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:11,460 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:11,460 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:11,467 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:19:11,507 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-02 12:19:11,507 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:11,509 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:11,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:11,716 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:11,716 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-10-02 12:19:11,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-02 12:19:11,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-02 12:19:11,716 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:11,717 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 33 states. [2018-10-02 12:19:11,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:11,870 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-10-02 12:19:11,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-02 12:19:11,870 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 126 [2018-10-02 12:19:11,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:11,871 INFO L225 Difference]: With dead ends: 133 [2018-10-02 12:19:11,871 INFO L226 Difference]: Without dead ends: 131 [2018-10-02 12:19:11,872 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime [2018-10-02 12:19:11,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-02 12:19:11,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-10-02 12:19:11,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-10-02 12:19:11,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-10-02 12:19:11,876 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 126 [2018-10-02 12:19:11,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:11,876 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-10-02 12:19:11,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-02 12:19:11,876 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-10-02 12:19:11,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-02 12:19:11,877 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:11,877 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 1, 1, 1, 1, 1, 1] [2018-10-02 12:19:11,877 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:11,877 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:11,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1270519518, now seen corresponding path program 31 times [2018-10-02 12:19:11,877 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:11,877 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:11,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:11,878 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:11,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:12,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:12,727 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:12,728 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:12,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:12,763 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:12,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:12,993 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:12,993 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-02 12:19:12,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-02 12:19:12,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-02 12:19:12,994 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:12,994 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 34 states. [2018-10-02 12:19:13,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:13,136 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-10-02 12:19:13,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-02 12:19:13,136 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 130 [2018-10-02 12:19:13,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:13,138 INFO L225 Difference]: With dead ends: 137 [2018-10-02 12:19:13,138 INFO L226 Difference]: Without dead ends: 135 [2018-10-02 12:19:13,138 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime [2018-10-02 12:19:13,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-10-02 12:19:13,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-10-02 12:19:13,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-02 12:19:13,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-10-02 12:19:13,141 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 130 [2018-10-02 12:19:13,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:13,142 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-10-02 12:19:13,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-02 12:19:13,142 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-10-02 12:19:13,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-02 12:19:13,142 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:13,143 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 1, 1, 1, 1, 1, 1] [2018-10-02 12:19:13,143 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:13,143 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:13,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1248242228, now seen corresponding path program 32 times [2018-10-02 12:19:13,143 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:13,143 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:13,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:13,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:13,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:13,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:13,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:13,956 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:13,956 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:13,963 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:19:13,991 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:19:13,991 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:13,993 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:14,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:14,332 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:14,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-02 12:19:14,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-02 12:19:14,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-02 12:19:14,333 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:14,333 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 35 states. [2018-10-02 12:19:14,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:14,523 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-10-02 12:19:14,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-02 12:19:14,523 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 134 [2018-10-02 12:19:14,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:14,525 INFO L225 Difference]: With dead ends: 141 [2018-10-02 12:19:14,525 INFO L226 Difference]: Without dead ends: 139 [2018-10-02 12:19:14,525 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.6s impTime [2018-10-02 12:19:14,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-02 12:19:14,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-10-02 12:19:14,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-02 12:19:14,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-10-02 12:19:14,529 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 134 [2018-10-02 12:19:14,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:14,529 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-10-02 12:19:14,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-02 12:19:14,529 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-10-02 12:19:14,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-02 12:19:14,530 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:14,530 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 1, 1, 1, 1, 1, 1] [2018-10-02 12:19:14,531 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:14,531 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:14,531 INFO L82 PathProgramCache]: Analyzing trace with hash -596451978, now seen corresponding path program 33 times [2018-10-02 12:19:14,531 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:14,531 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:14,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:14,532 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:14,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:14,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:14,976 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:14,976 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:14,986 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:19:15,027 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-10-02 12:19:15,028 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:15,030 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:15,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:15,326 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:15,326 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-02 12:19:15,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-02 12:19:15,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-02 12:19:15,326 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:15,327 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 36 states. [2018-10-02 12:19:15,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:15,485 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-10-02 12:19:15,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-02 12:19:15,485 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 138 [2018-10-02 12:19:15,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:15,486 INFO L225 Difference]: With dead ends: 145 [2018-10-02 12:19:15,486 INFO L226 Difference]: Without dead ends: 143 [2018-10-02 12:19:15,487 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime [2018-10-02 12:19:15,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-02 12:19:15,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-10-02 12:19:15,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-10-02 12:19:15,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-10-02 12:19:15,491 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 138 [2018-10-02 12:19:15,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:15,491 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-10-02 12:19:15,491 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-02 12:19:15,491 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-10-02 12:19:15,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-02 12:19:15,492 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:15,492 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 1, 1, 1, 1, 1, 1] [2018-10-02 12:19:15,492 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:15,492 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:15,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1720483872, now seen corresponding path program 34 times [2018-10-02 12:19:15,493 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:15,493 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:15,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:15,494 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:15,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:15,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:16,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:16,110 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:16,110 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:16,117 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:19:16,144 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:19:16,145 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:16,147 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:16,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:16,419 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:16,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-02 12:19:16,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-02 12:19:16,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-02 12:19:16,420 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:16,420 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 37 states. [2018-10-02 12:19:16,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:16,641 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-10-02 12:19:16,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-02 12:19:16,642 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 142 [2018-10-02 12:19:16,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:16,643 INFO L225 Difference]: With dead ends: 149 [2018-10-02 12:19:16,643 INFO L226 Difference]: Without dead ends: 147 [2018-10-02 12:19:16,644 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime [2018-10-02 12:19:16,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-10-02 12:19:16,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-10-02 12:19:16,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-10-02 12:19:16,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-10-02 12:19:16,647 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 142 [2018-10-02 12:19:16,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:16,648 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-10-02 12:19:16,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-02 12:19:16,648 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-10-02 12:19:16,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-02 12:19:16,649 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:16,649 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 1, 1, 1, 1, 1, 1] [2018-10-02 12:19:16,649 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:16,649 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:16,649 INFO L82 PathProgramCache]: Analyzing trace with hash 811646410, now seen corresponding path program 35 times [2018-10-02 12:19:16,650 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:16,650 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:16,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:16,650 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:16,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:16,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:17,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:17,326 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:17,326 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:17,334 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:19:17,376 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-10-02 12:19:17,376 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:17,379 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:17,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:17,754 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:17,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-02 12:19:17,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-02 12:19:17,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-02 12:19:17,755 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:17,755 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 38 states. [2018-10-02 12:19:18,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:18,453 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-10-02 12:19:18,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-02 12:19:18,454 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 146 [2018-10-02 12:19:18,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:18,455 INFO L225 Difference]: With dead ends: 153 [2018-10-02 12:19:18,455 INFO L226 Difference]: Without dead ends: 151 [2018-10-02 12:19:18,456 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.5s impTime [2018-10-02 12:19:18,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-10-02 12:19:18,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-10-02 12:19:18,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-02 12:19:18,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-10-02 12:19:18,459 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 146 [2018-10-02 12:19:18,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:18,459 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-10-02 12:19:18,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-02 12:19:18,460 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-10-02 12:19:18,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-02 12:19:18,460 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:18,461 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 1, 1, 1, 1, 1, 1] [2018-10-02 12:19:18,461 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:18,461 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:18,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1428821620, now seen corresponding path program 36 times [2018-10-02 12:19:18,461 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:18,461 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:18,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:18,462 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:18,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:19,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:19,885 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:19,885 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:19,894 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:19:19,939 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-02 12:19:19,939 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:19,942 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:21,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:21,580 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:21,580 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-10-02 12:19:21,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-02 12:19:21,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-02 12:19:21,581 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:21,581 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 39 states. [2018-10-02 12:19:21,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:21,742 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-10-02 12:19:21,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-02 12:19:21,742 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 150 [2018-10-02 12:19:21,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:21,744 INFO L225 Difference]: With dead ends: 157 [2018-10-02 12:19:21,744 INFO L226 Difference]: Without dead ends: 155 [2018-10-02 12:19:21,744 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 1.2s impTime [2018-10-02 12:19:21,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-10-02 12:19:21,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-10-02 12:19:21,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-10-02 12:19:21,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-10-02 12:19:21,748 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 150 [2018-10-02 12:19:21,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:21,749 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-10-02 12:19:21,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-02 12:19:21,749 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-10-02 12:19:21,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-02 12:19:21,750 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:21,750 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 1, 1, 1, 1, 1, 1] [2018-10-02 12:19:21,750 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:21,751 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:21,751 INFO L82 PathProgramCache]: Analyzing trace with hash -823981538, now seen corresponding path program 37 times [2018-10-02 12:19:21,751 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:21,751 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:21,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:21,752 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:21,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:21,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:23,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:23,256 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:23,256 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:23,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:23,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:23,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:23,583 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:23,583 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-02 12:19:23,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-02 12:19:23,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-02 12:19:23,583 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:23,584 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 40 states. [2018-10-02 12:19:23,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:23,789 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-10-02 12:19:23,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-02 12:19:23,799 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 154 [2018-10-02 12:19:23,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:23,800 INFO L225 Difference]: With dead ends: 161 [2018-10-02 12:19:23,800 INFO L226 Difference]: Without dead ends: 159 [2018-10-02 12:19:23,800 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.1s impTime [2018-10-02 12:19:23,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-02 12:19:23,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-10-02 12:19:23,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-10-02 12:19:23,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-10-02 12:19:23,803 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 154 [2018-10-02 12:19:23,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:23,803 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-10-02 12:19:23,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-02 12:19:23,804 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-10-02 12:19:23,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-02 12:19:23,804 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:23,805 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 1, 1, 1, 1, 1, 1] [2018-10-02 12:19:23,805 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:23,805 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:23,805 INFO L82 PathProgramCache]: Analyzing trace with hash 373692616, now seen corresponding path program 38 times [2018-10-02 12:19:23,805 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:23,805 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:23,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:23,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:23,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:25,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:25,090 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:25,090 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:25,098 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:19:25,138 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:19:25,139 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:25,142 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:26,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:26,820 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:26,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-02 12:19:26,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-02 12:19:26,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-02 12:19:26,821 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:26,821 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 41 states. [2018-10-02 12:19:27,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:27,378 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-10-02 12:19:27,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-02 12:19:27,379 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 158 [2018-10-02 12:19:27,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:27,381 INFO L225 Difference]: With dead ends: 165 [2018-10-02 12:19:27,381 INFO L226 Difference]: Without dead ends: 163 [2018-10-02 12:19:27,381 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 0.9s impTime [2018-10-02 12:19:27,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-10-02 12:19:27,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-10-02 12:19:27,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-10-02 12:19:27,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-10-02 12:19:27,384 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 158 [2018-10-02 12:19:27,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:27,385 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-10-02 12:19:27,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-02 12:19:27,385 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-10-02 12:19:27,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-02 12:19:27,386 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:27,386 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 1, 1, 1, 1, 1, 1] [2018-10-02 12:19:27,386 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:27,386 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:27,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1026702734, now seen corresponding path program 39 times [2018-10-02 12:19:27,387 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:27,387 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:27,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:27,387 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:27,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:27,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:28,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:28,036 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:28,036 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:28,043 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:19:28,101 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-10-02 12:19:28,101 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:28,104 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:28,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:28,383 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:28,383 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-02 12:19:28,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-02 12:19:28,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-02 12:19:28,384 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:28,384 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 42 states. [2018-10-02 12:19:28,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:28,703 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-10-02 12:19:28,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-02 12:19:28,704 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 162 [2018-10-02 12:19:28,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:28,705 INFO L225 Difference]: With dead ends: 169 [2018-10-02 12:19:28,705 INFO L226 Difference]: Without dead ends: 167 [2018-10-02 12:19:28,706 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.4s impTime [2018-10-02 12:19:28,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-10-02 12:19:28,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-10-02 12:19:28,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-10-02 12:19:28,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-10-02 12:19:28,708 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 162 [2018-10-02 12:19:28,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:28,709 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-10-02 12:19:28,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-02 12:19:28,709 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-10-02 12:19:28,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-02 12:19:28,710 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:28,710 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 1, 1, 1, 1, 1, 1] [2018-10-02 12:19:28,710 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:28,711 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:28,711 INFO L82 PathProgramCache]: Analyzing trace with hash 716474140, now seen corresponding path program 40 times [2018-10-02 12:19:28,711 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:28,711 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:28,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:28,712 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:28,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:29,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:29,774 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:29,774 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:29,782 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:19:29,815 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:19:29,815 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:29,818 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:30,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:30,112 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:30,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-02 12:19:30,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-02 12:19:30,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-02 12:19:30,113 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:30,113 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 43 states. [2018-10-02 12:19:30,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:30,264 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-10-02 12:19:30,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-02 12:19:30,264 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 166 [2018-10-02 12:19:30,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:30,266 INFO L225 Difference]: With dead ends: 173 [2018-10-02 12:19:30,266 INFO L226 Difference]: Without dead ends: 171 [2018-10-02 12:19:30,266 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.8s impTime [2018-10-02 12:19:30,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-10-02 12:19:30,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-10-02 12:19:30,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-10-02 12:19:30,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-10-02 12:19:30,269 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 166 [2018-10-02 12:19:30,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:30,270 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-10-02 12:19:30,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-02 12:19:30,270 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-10-02 12:19:30,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-02 12:19:30,271 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:30,271 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 1, 1, 1, 1, 1, 1] [2018-10-02 12:19:30,271 INFO L423 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:30,271 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:30,272 INFO L82 PathProgramCache]: Analyzing trace with hash 49604294, now seen corresponding path program 41 times [2018-10-02 12:19:30,272 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:30,272 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:30,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:30,273 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:30,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:31,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:31,059 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:31,059 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:31,068 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:19:31,131 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-10-02 12:19:31,131 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:31,133 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:31,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:31,470 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:31,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-02 12:19:31,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-02 12:19:31,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-02 12:19:31,472 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:31,472 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 44 states. [2018-10-02 12:19:31,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:31,668 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-10-02 12:19:31,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-02 12:19:31,669 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 170 [2018-10-02 12:19:31,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:31,670 INFO L225 Difference]: With dead ends: 177 [2018-10-02 12:19:31,670 INFO L226 Difference]: Without dead ends: 175 [2018-10-02 12:19:31,670 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.6s impTime [2018-10-02 12:19:31,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-10-02 12:19:31,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-10-02 12:19:31,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-10-02 12:19:31,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-10-02 12:19:31,674 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 170 [2018-10-02 12:19:31,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:31,674 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-10-02 12:19:31,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-02 12:19:31,675 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-10-02 12:19:31,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-02 12:19:31,675 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:31,676 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 1, 1, 1, 1, 1, 1] [2018-10-02 12:19:31,676 INFO L423 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:31,676 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:31,676 INFO L82 PathProgramCache]: Analyzing trace with hash -11968144, now seen corresponding path program 42 times [2018-10-02 12:19:31,676 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:31,676 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:31,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:31,677 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:31,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:33,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:33,472 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:33,472 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:33,479 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:19:33,532 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-02 12:19:33,532 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:33,535 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:33,831 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:33,861 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:33,861 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-10-02 12:19:33,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-02 12:19:33,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-02 12:19:33,862 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:33,862 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 45 states. [2018-10-02 12:19:34,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:34,179 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-10-02 12:19:34,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-02 12:19:34,179 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 174 [2018-10-02 12:19:34,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:34,180 INFO L225 Difference]: With dead ends: 181 [2018-10-02 12:19:34,181 INFO L226 Difference]: Without dead ends: 179 [2018-10-02 12:19:34,181 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.3s impTime [2018-10-02 12:19:34,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-10-02 12:19:34,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-10-02 12:19:34,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-02 12:19:34,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-10-02 12:19:34,184 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 174 [2018-10-02 12:19:34,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:34,184 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-10-02 12:19:34,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-02 12:19:34,185 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-10-02 12:19:34,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-02 12:19:34,186 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:34,186 INFO L375 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 1, 1, 1, 1, 1, 1] [2018-10-02 12:19:34,186 INFO L423 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:34,186 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:34,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1915516698, now seen corresponding path program 43 times [2018-10-02 12:19:34,186 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:34,186 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:34,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:34,187 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:34,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:34,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:35,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:35,177 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:35,177 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:35,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:35,220 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:35,550 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:35,571 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:35,571 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-02 12:19:35,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-02 12:19:35,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-02 12:19:35,572 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:35,572 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 46 states. [2018-10-02 12:19:35,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:35,805 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-10-02 12:19:35,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-02 12:19:35,805 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 178 [2018-10-02 12:19:35,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:35,806 INFO L225 Difference]: With dead ends: 185 [2018-10-02 12:19:35,806 INFO L226 Difference]: Without dead ends: 183 [2018-10-02 12:19:35,806 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.7s impTime [2018-10-02 12:19:35,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-02 12:19:35,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-10-02 12:19:35,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-10-02 12:19:35,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-10-02 12:19:35,810 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 178 [2018-10-02 12:19:35,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:35,810 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-10-02 12:19:35,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-02 12:19:35,810 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-10-02 12:19:35,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-02 12:19:35,811 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:35,811 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 1, 1, 1, 1, 1, 1] [2018-10-02 12:19:35,811 INFO L423 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:35,811 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:35,811 INFO L82 PathProgramCache]: Analyzing trace with hash -321345596, now seen corresponding path program 44 times [2018-10-02 12:19:35,811 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:35,812 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:35,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:35,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:35,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:37,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:37,018 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:37,018 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:37,025 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:19:37,063 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:19:37,063 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:37,066 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:37,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:37,391 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:37,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-02 12:19:37,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-02 12:19:37,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-02 12:19:37,392 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:37,392 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 47 states. [2018-10-02 12:19:37,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:37,755 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-10-02 12:19:37,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-02 12:19:37,756 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 182 [2018-10-02 12:19:37,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:37,757 INFO L225 Difference]: With dead ends: 189 [2018-10-02 12:19:37,757 INFO L226 Difference]: Without dead ends: 187 [2018-10-02 12:19:37,757 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 0.9s impTime [2018-10-02 12:19:37,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-10-02 12:19:37,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-10-02 12:19:37,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-10-02 12:19:37,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-10-02 12:19:37,762 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 182 [2018-10-02 12:19:37,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:37,763 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-10-02 12:19:37,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-02 12:19:37,763 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-10-02 12:19:37,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-02 12:19:37,764 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:37,764 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 1, 1, 1, 1, 1, 1] [2018-10-02 12:19:37,764 INFO L423 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:37,764 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:37,765 INFO L82 PathProgramCache]: Analyzing trace with hash -548899986, now seen corresponding path program 45 times [2018-10-02 12:19:37,765 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:37,765 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:37,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:37,766 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:37,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:37,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:38,490 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:38,490 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:38,491 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:38,498 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:19:38,556 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-10-02 12:19:38,556 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:38,559 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:39,443 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:39,482 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:39,482 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-02 12:19:39,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-02 12:19:39,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-02 12:19:39,483 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:39,483 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 48 states. [2018-10-02 12:19:41,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:41,870 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-10-02 12:19:41,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-02 12:19:41,870 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 186 [2018-10-02 12:19:41,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:41,872 INFO L225 Difference]: With dead ends: 193 [2018-10-02 12:19:41,872 INFO L226 Difference]: Without dead ends: 191 [2018-10-02 12:19:41,872 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 0.5s impTime [2018-10-02 12:19:41,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-10-02 12:19:41,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-10-02 12:19:41,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-10-02 12:19:41,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-10-02 12:19:41,876 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 186 [2018-10-02 12:19:41,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:41,876 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-10-02 12:19:41,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-02 12:19:41,877 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-10-02 12:19:41,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-02 12:19:41,878 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:41,878 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 1, 1, 1, 1, 1, 1] [2018-10-02 12:19:41,878 INFO L423 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:41,878 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:41,878 INFO L82 PathProgramCache]: Analyzing trace with hash 943086104, now seen corresponding path program 46 times [2018-10-02 12:19:41,878 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:41,878 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:41,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:41,879 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:41,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:42,776 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:42,777 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:42,777 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:42,785 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:19:42,825 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:19:42,825 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:42,828 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:43,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:43,275 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:43,275 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-10-02 12:19:43,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-02 12:19:43,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-02 12:19:43,276 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:43,276 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 49 states. [2018-10-02 12:19:43,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:43,473 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-10-02 12:19:43,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-02 12:19:43,474 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 190 [2018-10-02 12:19:43,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:43,475 INFO L225 Difference]: With dead ends: 197 [2018-10-02 12:19:43,475 INFO L226 Difference]: Without dead ends: 195 [2018-10-02 12:19:43,476 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.6s impTime [2018-10-02 12:19:43,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-02 12:19:43,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-10-02 12:19:43,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-10-02 12:19:43,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-10-02 12:19:43,480 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 190 [2018-10-02 12:19:43,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:43,480 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-10-02 12:19:43,481 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-02 12:19:43,481 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-10-02 12:19:43,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-02 12:19:43,482 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:43,482 INFO L375 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 1, 1, 1, 1, 1, 1] [2018-10-02 12:19:43,482 INFO L423 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:43,482 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:43,482 INFO L82 PathProgramCache]: Analyzing trace with hash 85777346, now seen corresponding path program 47 times [2018-10-02 12:19:43,482 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:43,482 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:43,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:43,483 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:43,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:43,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:44,860 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:44,860 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:44,861 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:44,868 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:19:44,945 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-10-02 12:19:44,945 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:44,951 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:45,307 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:45,327 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:45,327 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-02 12:19:45,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-02 12:19:45,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-02 12:19:45,328 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:45,328 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 50 states. [2018-10-02 12:19:45,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:45,602 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-10-02 12:19:45,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-02 12:19:45,602 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 194 [2018-10-02 12:19:45,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:45,603 INFO L225 Difference]: With dead ends: 201 [2018-10-02 12:19:45,604 INFO L226 Difference]: Without dead ends: 199 [2018-10-02 12:19:45,604 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.1s impTime [2018-10-02 12:19:45,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-10-02 12:19:45,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-10-02 12:19:45,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-02 12:19:45,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-10-02 12:19:45,607 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 194 [2018-10-02 12:19:45,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:45,608 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-10-02 12:19:45,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-02 12:19:45,608 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-10-02 12:19:45,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-02 12:19:45,609 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:45,609 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 1, 1, 1, 1, 1, 1] [2018-10-02 12:19:45,609 INFO L423 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:45,610 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:45,610 INFO L82 PathProgramCache]: Analyzing trace with hash 305559660, now seen corresponding path program 48 times [2018-10-02 12:19:45,610 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:45,610 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:45,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:45,611 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:45,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:46,594 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:46,594 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:46,594 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:46,602 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:19:46,663 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-02 12:19:46,663 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:46,666 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:46,971 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:46,991 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:46,991 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-10-02 12:19:46,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-02 12:19:46,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-02 12:19:46,992 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:46,992 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 51 states. [2018-10-02 12:19:47,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:47,288 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-10-02 12:19:47,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-02 12:19:47,288 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 198 [2018-10-02 12:19:47,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:47,290 INFO L225 Difference]: With dead ends: 205 [2018-10-02 12:19:47,290 INFO L226 Difference]: Without dead ends: 203 [2018-10-02 12:19:47,290 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.7s impTime [2018-10-02 12:19:47,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-10-02 12:19:47,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-10-02 12:19:47,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-10-02 12:19:47,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-10-02 12:19:47,293 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 198 [2018-10-02 12:19:47,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:47,294 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-10-02 12:19:47,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-02 12:19:47,294 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-10-02 12:19:47,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-02 12:19:47,295 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:47,295 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 1, 1, 1, 1, 1, 1] [2018-10-02 12:19:47,295 INFO L423 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:47,295 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:47,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1971474410, now seen corresponding path program 49 times [2018-10-02 12:19:47,296 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:47,296 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:47,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:47,296 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:47,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:48,817 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:48,818 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:48,818 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:48,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:48,865 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:49,233 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:49,253 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:49,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-02 12:19:49,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-02 12:19:49,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-02 12:19:49,254 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:49,254 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 52 states. [2018-10-02 12:19:49,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:49,578 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-10-02 12:19:49,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-02 12:19:49,579 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 202 [2018-10-02 12:19:49,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:49,581 INFO L225 Difference]: With dead ends: 209 [2018-10-02 12:19:49,581 INFO L226 Difference]: Without dead ends: 207 [2018-10-02 12:19:49,581 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.2s impTime [2018-10-02 12:19:49,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-10-02 12:19:49,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-10-02 12:19:49,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-10-02 12:19:49,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-10-02 12:19:49,584 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 202 [2018-10-02 12:19:49,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:49,585 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-10-02 12:19:49,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-02 12:19:49,585 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-10-02 12:19:49,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-02 12:19:49,586 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:49,586 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 1, 1, 1, 1, 1, 1] [2018-10-02 12:19:49,586 INFO L423 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:49,586 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:49,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1750269248, now seen corresponding path program 50 times [2018-10-02 12:19:49,587 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:49,587 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:49,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:49,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:49,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:50,613 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:50,614 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:50,614 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:50,622 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:19:50,659 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:19:50,659 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:50,662 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:51,014 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:51,034 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:51,034 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-02 12:19:51,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-02 12:19:51,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-02 12:19:51,035 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:51,036 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 53 states. [2018-10-02 12:19:51,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:51,287 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-10-02 12:19:51,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-02 12:19:51,287 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 206 [2018-10-02 12:19:51,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:51,289 INFO L225 Difference]: With dead ends: 213 [2018-10-02 12:19:51,289 INFO L226 Difference]: Without dead ends: 211 [2018-10-02 12:19:51,289 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.7s impTime [2018-10-02 12:19:51,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-10-02 12:19:51,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-10-02 12:19:51,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-10-02 12:19:51,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-10-02 12:19:51,293 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 206 [2018-10-02 12:19:51,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:51,293 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-10-02 12:19:51,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-02 12:19:51,293 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-10-02 12:19:51,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-02 12:19:51,294 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:51,295 INFO L375 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 1, 1, 1, 1, 1, 1] [2018-10-02 12:19:51,295 INFO L423 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:51,295 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:51,295 INFO L82 PathProgramCache]: Analyzing trace with hash 37679210, now seen corresponding path program 51 times [2018-10-02 12:19:51,295 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:51,295 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:51,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:51,296 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:51,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:51,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:52,198 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:52,198 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:52,198 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:52,207 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:19:52,529 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-10-02 12:19:52,529 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:52,534 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:53,154 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:53,174 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:53,174 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-02 12:19:53,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-02 12:19:53,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-02 12:19:53,175 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:53,175 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 54 states. [2018-10-02 12:19:53,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:53,481 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-10-02 12:19:53,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-02 12:19:53,481 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 210 [2018-10-02 12:19:53,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:53,483 INFO L225 Difference]: With dead ends: 217 [2018-10-02 12:19:53,483 INFO L226 Difference]: Without dead ends: 215 [2018-10-02 12:19:53,484 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.7s impTime [2018-10-02 12:19:53,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-10-02 12:19:53,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-10-02 12:19:53,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-10-02 12:19:53,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-10-02 12:19:53,487 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 210 [2018-10-02 12:19:53,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:53,487 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-10-02 12:19:53,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-02 12:19:53,487 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-10-02 12:19:53,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-02 12:19:53,488 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:53,488 INFO L375 BasicCegarLoop]: trace histogram [52, 52, 52, 52, 1, 1, 1, 1, 1, 1] [2018-10-02 12:19:53,489 INFO L423 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:53,489 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:53,489 INFO L82 PathProgramCache]: Analyzing trace with hash -781321964, now seen corresponding path program 52 times [2018-10-02 12:19:53,489 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:53,489 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:53,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:53,490 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:53,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:53,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:54,762 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:54,762 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:54,762 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:54,769 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:19:54,812 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:19:54,812 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:54,815 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:55,373 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:55,392 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:55,393 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-02 12:19:55,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-02 12:19:55,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-02 12:19:55,394 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:55,394 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 55 states. [2018-10-02 12:19:55,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:55,745 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-10-02 12:19:55,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-02 12:19:55,745 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 214 [2018-10-02 12:19:55,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:55,746 INFO L225 Difference]: With dead ends: 221 [2018-10-02 12:19:55,747 INFO L226 Difference]: Without dead ends: 219 [2018-10-02 12:19:55,747 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.0s impTime [2018-10-02 12:19:55,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-10-02 12:19:55,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-10-02 12:19:55,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-10-02 12:19:55,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-10-02 12:19:55,750 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 214 [2018-10-02 12:19:55,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:55,750 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-10-02 12:19:55,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-02 12:19:55,750 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-10-02 12:19:55,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-02 12:19:55,751 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:55,751 INFO L375 BasicCegarLoop]: trace histogram [53, 53, 53, 53, 1, 1, 1, 1, 1, 1] [2018-10-02 12:19:55,751 INFO L423 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:55,751 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:55,751 INFO L82 PathProgramCache]: Analyzing trace with hash -348873538, now seen corresponding path program 53 times [2018-10-02 12:19:55,751 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:55,751 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:55,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:55,752 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:55,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:57,178 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:57,178 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:57,178 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:57,186 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:19:57,255 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-10-02 12:19:57,255 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:57,258 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:57,641 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:57,661 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:57,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-02 12:19:57,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-02 12:19:57,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-02 12:19:57,662 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:57,662 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 56 states. [2018-10-02 12:19:58,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:58,032 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-10-02 12:19:58,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-02 12:19:58,033 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 218 [2018-10-02 12:19:58,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:58,034 INFO L225 Difference]: With dead ends: 225 [2018-10-02 12:19:58,034 INFO L226 Difference]: Without dead ends: 223 [2018-10-02 12:19:58,035 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime [2018-10-02 12:19:58,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-02 12:19:58,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-10-02 12:19:58,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-10-02 12:19:58,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-10-02 12:19:58,038 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 218 [2018-10-02 12:19:58,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:58,038 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-10-02 12:19:58,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-02 12:19:58,038 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-10-02 12:19:58,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-02 12:19:58,039 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:58,040 INFO L375 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 1, 1, 1, 1, 1, 1] [2018-10-02 12:19:58,040 INFO L423 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:58,040 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:58,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1269998744, now seen corresponding path program 54 times [2018-10-02 12:19:58,040 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:58,041 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:58,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:58,041 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:58,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:59,257 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:59,258 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:59,258 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:19:59,265 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:19:59,332 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-10-02 12:19:59,333 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:59,335 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:59,783 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:59,803 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:59,803 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-10-02 12:19:59,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-02 12:19:59,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-02 12:19:59,804 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:59,805 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 57 states. [2018-10-02 12:20:00,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:00,353 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-10-02 12:20:00,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-02 12:20:00,353 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 222 [2018-10-02 12:20:00,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:00,355 INFO L225 Difference]: With dead ends: 229 [2018-10-02 12:20:00,355 INFO L226 Difference]: Without dead ends: 227 [2018-10-02 12:20:00,355 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.0s impTime [2018-10-02 12:20:00,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-10-02 12:20:00,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-10-02 12:20:00,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-10-02 12:20:00,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-10-02 12:20:00,358 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 222 [2018-10-02 12:20:00,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:00,359 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-10-02 12:20:00,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-02 12:20:00,359 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-10-02 12:20:00,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-02 12:20:00,360 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:00,360 INFO L375 BasicCegarLoop]: trace histogram [55, 55, 55, 55, 1, 1, 1, 1, 1, 1] [2018-10-02 12:20:00,360 INFO L423 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:00,360 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:00,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1338854126, now seen corresponding path program 55 times [2018-10-02 12:20:00,361 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:00,361 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:00,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:00,362 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:00,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:00,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:01,852 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:01,853 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:01,853 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:01,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:01,905 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:02,269 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:02,289 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:02,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-02 12:20:02,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-02 12:20:02,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-02 12:20:02,290 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:02,290 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand 58 states. [2018-10-02 12:20:02,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:02,681 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-10-02 12:20:02,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-02 12:20:02,681 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 226 [2018-10-02 12:20:02,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:02,682 INFO L225 Difference]: With dead ends: 233 [2018-10-02 12:20:02,682 INFO L226 Difference]: Without dead ends: 231 [2018-10-02 12:20:02,683 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.3s impTime [2018-10-02 12:20:02,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-10-02 12:20:02,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-10-02 12:20:02,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-10-02 12:20:02,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2018-10-02 12:20:02,685 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 226 [2018-10-02 12:20:02,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:02,686 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2018-10-02 12:20:02,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-02 12:20:02,686 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2018-10-02 12:20:02,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-10-02 12:20:02,687 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:02,687 INFO L375 BasicCegarLoop]: trace histogram [56, 56, 56, 56, 1, 1, 1, 1, 1, 1] [2018-10-02 12:20:02,687 INFO L423 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:02,688 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:02,688 INFO L82 PathProgramCache]: Analyzing trace with hash 555690428, now seen corresponding path program 56 times [2018-10-02 12:20:02,688 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:02,688 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:02,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:02,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:02,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:04,297 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:04,298 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:04,298 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:04,305 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:20:04,359 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:20:04,359 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:04,362 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:04,807 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:04,827 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:04,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-02 12:20:04,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-02 12:20:04,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-02 12:20:04,828 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:04,828 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand 59 states. [2018-10-02 12:20:05,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:05,435 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-10-02 12:20:05,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-02 12:20:05,435 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 230 [2018-10-02 12:20:05,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:05,436 INFO L225 Difference]: With dead ends: 237 [2018-10-02 12:20:05,436 INFO L226 Difference]: Without dead ends: 235 [2018-10-02 12:20:05,437 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.3s impTime [2018-10-02 12:20:05,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-10-02 12:20:05,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-10-02 12:20:05,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-10-02 12:20:05,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions. [2018-10-02 12:20:05,439 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 230 [2018-10-02 12:20:05,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:05,439 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions. [2018-10-02 12:20:05,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-02 12:20:05,439 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions. [2018-10-02 12:20:05,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-10-02 12:20:05,440 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:05,440 INFO L375 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 1, 1, 1, 1, 1, 1] [2018-10-02 12:20:05,440 INFO L423 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:05,440 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:05,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1475528346, now seen corresponding path program 57 times [2018-10-02 12:20:05,440 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:05,441 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:05,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:05,441 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:05,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:06,354 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:06,354 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:06,354 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:06,362 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:20:06,436 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2018-10-02 12:20:06,436 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:06,439 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:06,809 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:06,830 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:06,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-02 12:20:06,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-02 12:20:06,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-02 12:20:06,831 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:06,831 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand 60 states. [2018-10-02 12:20:07,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:07,174 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-10-02 12:20:07,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-02 12:20:07,174 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 234 [2018-10-02 12:20:07,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:07,176 INFO L225 Difference]: With dead ends: 241 [2018-10-02 12:20:07,176 INFO L226 Difference]: Without dead ends: 239 [2018-10-02 12:20:07,176 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.7s impTime [2018-10-02 12:20:07,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-10-02 12:20:07,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-10-02 12:20:07,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-10-02 12:20:07,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2018-10-02 12:20:07,178 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 234 [2018-10-02 12:20:07,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:07,178 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2018-10-02 12:20:07,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-02 12:20:07,179 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2018-10-02 12:20:07,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-02 12:20:07,179 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:07,180 INFO L375 BasicCegarLoop]: trace histogram [58, 58, 58, 58, 1, 1, 1, 1, 1, 1] [2018-10-02 12:20:07,180 INFO L423 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:07,180 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:07,180 INFO L82 PathProgramCache]: Analyzing trace with hash -457743344, now seen corresponding path program 58 times [2018-10-02 12:20:07,180 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:07,180 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:07,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:07,181 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:07,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:08,268 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:08,269 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:08,269 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:08,278 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:20:08,318 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:20:08,319 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:08,321 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:08,751 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:08,771 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:08,771 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-02 12:20:08,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-02 12:20:08,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-02 12:20:08,772 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:08,772 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 61 states. [2018-10-02 12:20:09,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:09,064 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-10-02 12:20:09,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-02 12:20:09,064 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 238 [2018-10-02 12:20:09,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:09,066 INFO L225 Difference]: With dead ends: 245 [2018-10-02 12:20:09,066 INFO L226 Difference]: Without dead ends: 243 [2018-10-02 12:20:09,066 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.8s impTime [2018-10-02 12:20:09,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-10-02 12:20:09,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-10-02 12:20:09,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-10-02 12:20:09,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 243 transitions. [2018-10-02 12:20:09,069 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 243 transitions. Word has length 238 [2018-10-02 12:20:09,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:09,069 INFO L480 AbstractCegarLoop]: Abstraction has 243 states and 243 transitions. [2018-10-02 12:20:09,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-02 12:20:09,069 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 243 transitions. [2018-10-02 12:20:09,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-02 12:20:09,070 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:09,070 INFO L375 BasicCegarLoop]: trace histogram [59, 59, 59, 59, 1, 1, 1, 1, 1, 1] [2018-10-02 12:20:09,071 INFO L423 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:09,071 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:09,071 INFO L82 PathProgramCache]: Analyzing trace with hash 362293690, now seen corresponding path program 59 times [2018-10-02 12:20:09,071 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:09,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:09,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:09,072 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:09,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:09,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:10,607 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:10,607 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:10,607 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:10,615 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:20:10,695 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2018-10-02 12:20:10,695 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:10,698 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:11,079 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:11,099 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:11,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-02 12:20:11,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-02 12:20:11,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-02 12:20:11,100 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:11,100 INFO L87 Difference]: Start difference. First operand 243 states and 243 transitions. Second operand 62 states. [2018-10-02 12:20:11,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:11,510 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-10-02 12:20:11,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-02 12:20:11,511 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 242 [2018-10-02 12:20:11,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:11,512 INFO L225 Difference]: With dead ends: 249 [2018-10-02 12:20:11,512 INFO L226 Difference]: Without dead ends: 247 [2018-10-02 12:20:11,512 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.3s impTime [2018-10-02 12:20:11,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-10-02 12:20:11,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-10-02 12:20:11,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-10-02 12:20:11,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2018-10-02 12:20:11,515 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 242 [2018-10-02 12:20:11,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:11,515 INFO L480 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2018-10-02 12:20:11,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-02 12:20:11,516 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2018-10-02 12:20:11,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-10-02 12:20:11,517 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:11,517 INFO L375 BasicCegarLoop]: trace histogram [60, 60, 60, 60, 1, 1, 1, 1, 1, 1] [2018-10-02 12:20:11,517 INFO L423 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:11,517 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:11,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1209398684, now seen corresponding path program 60 times [2018-10-02 12:20:11,518 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:11,518 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:11,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:11,519 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:11,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:12,885 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:12,885 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:12,885 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:12,893 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:20:12,970 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-10-02 12:20:12,970 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:12,973 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:13,357 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:13,378 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:13,378 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-10-02 12:20:13,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-02 12:20:13,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-02 12:20:13,379 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:13,379 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand 63 states. [2018-10-02 12:20:13,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:13,803 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-10-02 12:20:13,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-02 12:20:13,804 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 246 [2018-10-02 12:20:13,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:13,805 INFO L225 Difference]: With dead ends: 253 [2018-10-02 12:20:13,806 INFO L226 Difference]: Without dead ends: 251 [2018-10-02 12:20:13,806 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.1s impTime [2018-10-02 12:20:13,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-10-02 12:20:13,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-10-02 12:20:13,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-10-02 12:20:13,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions. [2018-10-02 12:20:13,809 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 246 [2018-10-02 12:20:13,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:13,809 INFO L480 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions. [2018-10-02 12:20:13,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-02 12:20:13,809 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions. [2018-10-02 12:20:13,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-10-02 12:20:13,810 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:13,810 INFO L375 BasicCegarLoop]: trace histogram [61, 61, 61, 61, 1, 1, 1, 1, 1, 1] [2018-10-02 12:20:13,810 INFO L423 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:13,811 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:13,811 INFO L82 PathProgramCache]: Analyzing trace with hash 665290254, now seen corresponding path program 61 times [2018-10-02 12:20:13,811 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:13,811 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:13,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:13,811 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:13,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:14,891 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:14,892 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:14,892 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:14,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:14,948 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:15,470 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:15,491 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:15,491 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-02 12:20:15,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-02 12:20:15,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-02 12:20:15,492 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:15,493 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand 64 states. [2018-10-02 12:20:15,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:15,951 INFO L93 Difference]: Finished difference Result 257 states and 257 transitions. [2018-10-02 12:20:15,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-02 12:20:15,952 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 250 [2018-10-02 12:20:15,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:15,953 INFO L225 Difference]: With dead ends: 257 [2018-10-02 12:20:15,953 INFO L226 Difference]: Without dead ends: 255 [2018-10-02 12:20:15,954 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 0.8s impTime [2018-10-02 12:20:15,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-10-02 12:20:15,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-10-02 12:20:15,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-10-02 12:20:15,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 255 transitions. [2018-10-02 12:20:15,957 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 255 transitions. Word has length 250 [2018-10-02 12:20:15,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:15,957 INFO L480 AbstractCegarLoop]: Abstraction has 255 states and 255 transitions. [2018-10-02 12:20:15,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-02 12:20:15,957 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 255 transitions. [2018-10-02 12:20:15,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-10-02 12:20:15,958 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:15,958 INFO L375 BasicCegarLoop]: trace histogram [62, 62, 62, 62, 1, 1, 1, 1, 1, 1] [2018-10-02 12:20:15,958 INFO L423 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:15,958 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:15,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1066081464, now seen corresponding path program 62 times [2018-10-02 12:20:15,959 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:15,959 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:15,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:15,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:15,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:17,184 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:17,184 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:17,184 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:17,193 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:20:17,240 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:20:17,240 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:17,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:17,645 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:17,665 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:17,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-02 12:20:17,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-02 12:20:17,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-02 12:20:17,666 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:17,666 INFO L87 Difference]: Start difference. First operand 255 states and 255 transitions. Second operand 65 states. [2018-10-02 12:20:17,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:17,965 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2018-10-02 12:20:17,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-02 12:20:17,965 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 254 [2018-10-02 12:20:17,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:17,966 INFO L225 Difference]: With dead ends: 261 [2018-10-02 12:20:17,967 INFO L226 Difference]: Without dead ends: 259 [2018-10-02 12:20:17,967 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime [2018-10-02 12:20:17,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-10-02 12:20:17,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-10-02 12:20:17,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-10-02 12:20:17,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 259 transitions. [2018-10-02 12:20:17,969 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 259 transitions. Word has length 254 [2018-10-02 12:20:17,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:17,970 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 259 transitions. [2018-10-02 12:20:17,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-02 12:20:17,970 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 259 transitions. [2018-10-02 12:20:17,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-10-02 12:20:17,971 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:17,971 INFO L375 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 1, 1, 1, 1, 1, 1] [2018-10-02 12:20:17,971 INFO L423 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:17,971 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:17,971 INFO L82 PathProgramCache]: Analyzing trace with hash -116437406, now seen corresponding path program 63 times [2018-10-02 12:20:17,972 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:17,972 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:17,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:17,972 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:17,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:17,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:19,415 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:19,416 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:19,416 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:19,425 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:20:19,510 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2018-10-02 12:20:19,511 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:19,514 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:19,930 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:19,950 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:19,950 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-02 12:20:19,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-02 12:20:19,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-02 12:20:19,951 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:19,951 INFO L87 Difference]: Start difference. First operand 259 states and 259 transitions. Second operand 66 states. [2018-10-02 12:20:20,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:20,265 INFO L93 Difference]: Finished difference Result 265 states and 265 transitions. [2018-10-02 12:20:20,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-02 12:20:20,265 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 258 [2018-10-02 12:20:20,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:20,267 INFO L225 Difference]: With dead ends: 265 [2018-10-02 12:20:20,267 INFO L226 Difference]: Without dead ends: 263 [2018-10-02 12:20:20,267 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime [2018-10-02 12:20:20,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-10-02 12:20:20,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2018-10-02 12:20:20,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-10-02 12:20:20,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 263 transitions. [2018-10-02 12:20:20,270 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 263 transitions. Word has length 258 [2018-10-02 12:20:20,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:20,270 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 263 transitions. [2018-10-02 12:20:20,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-02 12:20:20,270 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 263 transitions. [2018-10-02 12:20:20,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-10-02 12:20:20,272 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:20,272 INFO L375 BasicCegarLoop]: trace histogram [64, 64, 64, 64, 1, 1, 1, 1, 1, 1] [2018-10-02 12:20:20,272 INFO L423 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:20,272 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:20,272 INFO L82 PathProgramCache]: Analyzing trace with hash 208575244, now seen corresponding path program 64 times [2018-10-02 12:20:20,273 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:20,273 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:20,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:20,273 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:20,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:21,631 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:21,632 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:21,632 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:21,639 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:20:21,689 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:20:21,689 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:21,692 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:22,110 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:22,129 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:22,130 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-02 12:20:22,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-02 12:20:22,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-02 12:20:22,130 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:22,131 INFO L87 Difference]: Start difference. First operand 263 states and 263 transitions. Second operand 67 states. [2018-10-02 12:20:22,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:22,478 INFO L93 Difference]: Finished difference Result 269 states and 269 transitions. [2018-10-02 12:20:22,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-02 12:20:22,478 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 262 [2018-10-02 12:20:22,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:22,480 INFO L225 Difference]: With dead ends: 269 [2018-10-02 12:20:22,480 INFO L226 Difference]: Without dead ends: 267 [2018-10-02 12:20:22,480 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.1s impTime [2018-10-02 12:20:22,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-10-02 12:20:22,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2018-10-02 12:20:22,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-10-02 12:20:22,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 267 transitions. [2018-10-02 12:20:22,484 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 267 transitions. Word has length 262 [2018-10-02 12:20:22,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:22,484 INFO L480 AbstractCegarLoop]: Abstraction has 267 states and 267 transitions. [2018-10-02 12:20:22,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-02 12:20:22,484 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 267 transitions. [2018-10-02 12:20:22,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-10-02 12:20:22,486 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:22,486 INFO L375 BasicCegarLoop]: trace histogram [65, 65, 65, 65, 1, 1, 1, 1, 1, 1] [2018-10-02 12:20:22,486 INFO L423 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:22,486 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:22,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1868332362, now seen corresponding path program 65 times [2018-10-02 12:20:22,487 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:22,487 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:22,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:22,487 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:22,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:24,425 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:24,425 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:24,425 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:24,432 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:20:24,539 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2018-10-02 12:20:24,540 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:24,543 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:24,969 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:24,989 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:24,990 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-02 12:20:24,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-02 12:20:24,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-02 12:20:24,991 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:24,991 INFO L87 Difference]: Start difference. First operand 267 states and 267 transitions. Second operand 68 states. [2018-10-02 12:20:25,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:25,507 INFO L93 Difference]: Finished difference Result 273 states and 273 transitions. [2018-10-02 12:20:25,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-02 12:20:25,507 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 266 [2018-10-02 12:20:25,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:25,509 INFO L225 Difference]: With dead ends: 273 [2018-10-02 12:20:25,509 INFO L226 Difference]: Without dead ends: 271 [2018-10-02 12:20:25,509 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.7s impTime [2018-10-02 12:20:25,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-10-02 12:20:25,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-10-02 12:20:25,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-10-02 12:20:25,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 271 transitions. [2018-10-02 12:20:25,512 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 271 transitions. Word has length 266 [2018-10-02 12:20:25,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:25,513 INFO L480 AbstractCegarLoop]: Abstraction has 271 states and 271 transitions. [2018-10-02 12:20:25,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-02 12:20:25,513 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 271 transitions. [2018-10-02 12:20:25,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-10-02 12:20:25,514 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:25,514 INFO L375 BasicCegarLoop]: trace histogram [66, 66, 66, 66, 1, 1, 1, 1, 1, 1] [2018-10-02 12:20:25,515 INFO L423 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:25,515 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:25,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1687648928, now seen corresponding path program 66 times [2018-10-02 12:20:25,515 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:25,515 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:25,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:25,516 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:25,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:26,779 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:26,779 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:26,779 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:26,787 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:20:26,876 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-10-02 12:20:26,876 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:26,879 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:27,328 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:27,348 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:27,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-10-02 12:20:27,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-02 12:20:27,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-02 12:20:27,349 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:27,349 INFO L87 Difference]: Start difference. First operand 271 states and 271 transitions. Second operand 69 states. [2018-10-02 12:20:27,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:27,694 INFO L93 Difference]: Finished difference Result 277 states and 277 transitions. [2018-10-02 12:20:27,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-02 12:20:27,695 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 270 [2018-10-02 12:20:27,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:27,696 INFO L225 Difference]: With dead ends: 277 [2018-10-02 12:20:27,697 INFO L226 Difference]: Without dead ends: 275 [2018-10-02 12:20:27,697 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.0s impTime [2018-10-02 12:20:27,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-10-02 12:20:27,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2018-10-02 12:20:27,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-10-02 12:20:27,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 275 transitions. [2018-10-02 12:20:27,700 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 275 transitions. Word has length 270 [2018-10-02 12:20:27,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:27,700 INFO L480 AbstractCegarLoop]: Abstraction has 275 states and 275 transitions. [2018-10-02 12:20:27,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-02 12:20:27,700 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 275 transitions. [2018-10-02 12:20:27,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-10-02 12:20:27,702 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:27,702 INFO L375 BasicCegarLoop]: trace histogram [67, 67, 67, 67, 1, 1, 1, 1, 1, 1] [2018-10-02 12:20:27,702 INFO L423 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:27,702 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:27,702 INFO L82 PathProgramCache]: Analyzing trace with hash -516414710, now seen corresponding path program 67 times [2018-10-02 12:20:27,702 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:27,703 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:27,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:27,703 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:27,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:29,667 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:29,667 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:29,667 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:29,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:29,725 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:30,176 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:30,195 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:30,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-02 12:20:30,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-02 12:20:30,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-02 12:20:30,197 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:30,197 INFO L87 Difference]: Start difference. First operand 275 states and 275 transitions. Second operand 70 states. [2018-10-02 12:20:30,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:30,607 INFO L93 Difference]: Finished difference Result 281 states and 281 transitions. [2018-10-02 12:20:30,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-02 12:20:30,607 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 274 [2018-10-02 12:20:30,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:30,609 INFO L225 Difference]: With dead ends: 281 [2018-10-02 12:20:30,609 INFO L226 Difference]: Without dead ends: 279 [2018-10-02 12:20:30,609 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.7s impTime [2018-10-02 12:20:30,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-10-02 12:20:30,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2018-10-02 12:20:30,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-10-02 12:20:30,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 279 transitions. [2018-10-02 12:20:30,612 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 279 transitions. Word has length 274 [2018-10-02 12:20:30,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:30,613 INFO L480 AbstractCegarLoop]: Abstraction has 279 states and 279 transitions. [2018-10-02 12:20:30,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-02 12:20:30,613 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 279 transitions. [2018-10-02 12:20:30,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-10-02 12:20:30,614 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:30,614 INFO L375 BasicCegarLoop]: trace histogram [68, 68, 68, 68, 1, 1, 1, 1, 1, 1] [2018-10-02 12:20:30,615 INFO L423 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:30,615 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:30,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1431100340, now seen corresponding path program 68 times [2018-10-02 12:20:30,615 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:30,615 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:30,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:30,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:30,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:30,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:32,788 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:32,788 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:32,788 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:32,795 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:20:32,845 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:20:32,845 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:32,849 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:33,339 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:33,359 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:33,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-02 12:20:33,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-02 12:20:33,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-02 12:20:33,360 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:33,360 INFO L87 Difference]: Start difference. First operand 279 states and 279 transitions. Second operand 71 states. [2018-10-02 12:20:33,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:33,738 INFO L93 Difference]: Finished difference Result 285 states and 285 transitions. [2018-10-02 12:20:33,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-02 12:20:33,739 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 278 [2018-10-02 12:20:33,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:33,740 INFO L225 Difference]: With dead ends: 285 [2018-10-02 12:20:33,741 INFO L226 Difference]: Without dead ends: 283 [2018-10-02 12:20:33,741 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 1.9s impTime [2018-10-02 12:20:33,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-10-02 12:20:33,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2018-10-02 12:20:33,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-10-02 12:20:33,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 283 transitions. [2018-10-02 12:20:33,744 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 283 transitions. Word has length 278 [2018-10-02 12:20:33,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:33,744 INFO L480 AbstractCegarLoop]: Abstraction has 283 states and 283 transitions. [2018-10-02 12:20:33,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-02 12:20:33,744 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 283 transitions. [2018-10-02 12:20:33,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-10-02 12:20:33,745 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:33,745 INFO L375 BasicCegarLoop]: trace histogram [69, 69, 69, 69, 1, 1, 1, 1, 1, 1] [2018-10-02 12:20:33,745 INFO L423 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:33,746 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:33,746 INFO L82 PathProgramCache]: Analyzing trace with hash -912183458, now seen corresponding path program 69 times [2018-10-02 12:20:33,746 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:33,746 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:33,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:33,746 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:33,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:34,955 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:34,955 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:34,955 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:34,962 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:20:35,058 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-10-02 12:20:35,058 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:35,062 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:35,822 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:35,842 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:35,842 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-02 12:20:35,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-02 12:20:35,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-02 12:20:35,843 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:35,843 INFO L87 Difference]: Start difference. First operand 283 states and 283 transitions. Second operand 72 states. [2018-10-02 12:20:36,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:36,320 INFO L93 Difference]: Finished difference Result 289 states and 289 transitions. [2018-10-02 12:20:36,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-02 12:20:36,320 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 282 [2018-10-02 12:20:36,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:36,322 INFO L225 Difference]: With dead ends: 289 [2018-10-02 12:20:36,322 INFO L226 Difference]: Without dead ends: 287 [2018-10-02 12:20:36,322 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 0.9s impTime [2018-10-02 12:20:36,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-10-02 12:20:36,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2018-10-02 12:20:36,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-10-02 12:20:36,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 287 transitions. [2018-10-02 12:20:36,326 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 287 transitions. Word has length 282 [2018-10-02 12:20:36,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:36,326 INFO L480 AbstractCegarLoop]: Abstraction has 287 states and 287 transitions. [2018-10-02 12:20:36,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-02 12:20:36,326 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 287 transitions. [2018-10-02 12:20:36,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-10-02 12:20:36,327 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:36,327 INFO L375 BasicCegarLoop]: trace histogram [70, 70, 70, 70, 1, 1, 1, 1, 1, 1] [2018-10-02 12:20:36,327 INFO L423 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:36,328 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:36,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1896899064, now seen corresponding path program 70 times [2018-10-02 12:20:36,328 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:36,328 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:36,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:36,329 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:36,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:37,659 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:37,659 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:37,659 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:37,667 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:20:37,717 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:20:37,717 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:37,721 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:38,179 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:38,200 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:38,200 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-10-02 12:20:38,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-02 12:20:38,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-02 12:20:38,201 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:38,201 INFO L87 Difference]: Start difference. First operand 287 states and 287 transitions. Second operand 73 states. [2018-10-02 12:20:38,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:38,709 INFO L93 Difference]: Finished difference Result 293 states and 293 transitions. [2018-10-02 12:20:38,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-02 12:20:38,710 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 286 [2018-10-02 12:20:38,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:38,711 INFO L225 Difference]: With dead ends: 293 [2018-10-02 12:20:38,711 INFO L226 Difference]: Without dead ends: 291 [2018-10-02 12:20:38,711 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.0s impTime [2018-10-02 12:20:38,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-10-02 12:20:38,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2018-10-02 12:20:38,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-10-02 12:20:38,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 291 transitions. [2018-10-02 12:20:38,714 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 291 transitions. Word has length 286 [2018-10-02 12:20:38,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:38,715 INFO L480 AbstractCegarLoop]: Abstraction has 291 states and 291 transitions. [2018-10-02 12:20:38,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-02 12:20:38,715 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 291 transitions. [2018-10-02 12:20:38,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-10-02 12:20:38,716 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:38,716 INFO L375 BasicCegarLoop]: trace histogram [71, 71, 71, 71, 1, 1, 1, 1, 1, 1] [2018-10-02 12:20:38,717 INFO L423 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:38,717 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:38,717 INFO L82 PathProgramCache]: Analyzing trace with hash 347252658, now seen corresponding path program 71 times [2018-10-02 12:20:38,717 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:38,717 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:38,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:38,718 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:38,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:38,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:39,594 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:39,594 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:39,595 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:39,601 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:20:39,705 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2018-10-02 12:20:39,705 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:39,711 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:40,195 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:40,216 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:40,216 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-02 12:20:40,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-02 12:20:40,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-02 12:20:40,217 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:40,217 INFO L87 Difference]: Start difference. First operand 291 states and 291 transitions. Second operand 74 states. [2018-10-02 12:20:40,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:40,572 INFO L93 Difference]: Finished difference Result 297 states and 297 transitions. [2018-10-02 12:20:40,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-02 12:20:40,573 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 290 [2018-10-02 12:20:40,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:40,574 INFO L225 Difference]: With dead ends: 297 [2018-10-02 12:20:40,574 INFO L226 Difference]: Without dead ends: 295 [2018-10-02 12:20:40,574 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.6s impTime [2018-10-02 12:20:40,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-10-02 12:20:40,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2018-10-02 12:20:40,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-10-02 12:20:40,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 295 transitions. [2018-10-02 12:20:40,576 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 295 transitions. Word has length 290 [2018-10-02 12:20:40,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:40,577 INFO L480 AbstractCegarLoop]: Abstraction has 295 states and 295 transitions. [2018-10-02 12:20:40,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-02 12:20:40,577 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 295 transitions. [2018-10-02 12:20:40,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-10-02 12:20:40,578 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:40,578 INFO L375 BasicCegarLoop]: trace histogram [72, 72, 72, 72, 1, 1, 1, 1, 1, 1] [2018-10-02 12:20:40,578 INFO L423 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:40,579 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:40,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1994077092, now seen corresponding path program 72 times [2018-10-02 12:20:40,579 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:40,579 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:40,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:40,580 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:40,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:42,076 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:42,077 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:42,077 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:42,084 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:20:42,185 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-10-02 12:20:42,186 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:42,189 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:42,680 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:42,700 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:42,700 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-10-02 12:20:42,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-02 12:20:42,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-02 12:20:42,701 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:42,702 INFO L87 Difference]: Start difference. First operand 295 states and 295 transitions. Second operand 75 states. [2018-10-02 12:20:43,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:43,130 INFO L93 Difference]: Finished difference Result 301 states and 301 transitions. [2018-10-02 12:20:43,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-02 12:20:43,130 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 294 [2018-10-02 12:20:43,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:43,131 INFO L225 Difference]: With dead ends: 301 [2018-10-02 12:20:43,132 INFO L226 Difference]: Without dead ends: 299 [2018-10-02 12:20:43,132 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.2s impTime [2018-10-02 12:20:43,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-10-02 12:20:43,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2018-10-02 12:20:43,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-10-02 12:20:43,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 299 transitions. [2018-10-02 12:20:43,135 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 299 transitions. Word has length 294 [2018-10-02 12:20:43,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:43,135 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 299 transitions. [2018-10-02 12:20:43,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-02 12:20:43,135 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 299 transitions. [2018-10-02 12:20:43,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-10-02 12:20:43,136 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:43,136 INFO L375 BasicCegarLoop]: trace histogram [73, 73, 73, 73, 1, 1, 1, 1, 1, 1] [2018-10-02 12:20:43,136 INFO L423 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:43,137 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:43,137 INFO L82 PathProgramCache]: Analyzing trace with hash 2034273286, now seen corresponding path program 73 times [2018-10-02 12:20:43,137 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:43,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:43,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:43,137 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:43,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:43,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:44,352 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:44,352 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:44,352 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:44,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:44,417 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:44,916 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:44,936 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:44,937 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-02 12:20:44,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-02 12:20:44,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-02 12:20:44,938 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:44,938 INFO L87 Difference]: Start difference. First operand 299 states and 299 transitions. Second operand 76 states. [2018-10-02 12:20:45,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:45,390 INFO L93 Difference]: Finished difference Result 305 states and 305 transitions. [2018-10-02 12:20:45,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-02 12:20:45,390 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 298 [2018-10-02 12:20:45,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:45,392 INFO L225 Difference]: With dead ends: 305 [2018-10-02 12:20:45,392 INFO L226 Difference]: Without dead ends: 303 [2018-10-02 12:20:45,393 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 0.9s impTime [2018-10-02 12:20:45,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-10-02 12:20:45,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2018-10-02 12:20:45,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-10-02 12:20:45,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 303 transitions. [2018-10-02 12:20:45,395 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 303 transitions. Word has length 298 [2018-10-02 12:20:45,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:45,396 INFO L480 AbstractCegarLoop]: Abstraction has 303 states and 303 transitions. [2018-10-02 12:20:45,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-02 12:20:45,396 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 303 transitions. [2018-10-02 12:20:45,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-10-02 12:20:45,397 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:45,397 INFO L375 BasicCegarLoop]: trace histogram [74, 74, 74, 74, 1, 1, 1, 1, 1, 1] [2018-10-02 12:20:45,397 INFO L423 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:45,397 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:45,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1891657392, now seen corresponding path program 74 times [2018-10-02 12:20:45,397 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:45,397 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:45,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:45,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:45,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:45,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:46,511 INFO L134 CoverageAnalysis]: Checked inductivity of 10878 backedges. 0 proven. 10878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:46,512 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:46,512 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:46,519 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:20:46,575 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:20:46,575 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:46,579 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:47,077 INFO L134 CoverageAnalysis]: Checked inductivity of 10878 backedges. 0 proven. 10878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:47,097 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:47,097 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-10-02 12:20:47,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-02 12:20:47,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-02 12:20:47,098 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:47,098 INFO L87 Difference]: Start difference. First operand 303 states and 303 transitions. Second operand 77 states. [2018-10-02 12:20:47,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:47,462 INFO L93 Difference]: Finished difference Result 309 states and 309 transitions. [2018-10-02 12:20:47,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-02 12:20:47,463 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 302 [2018-10-02 12:20:47,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:47,464 INFO L225 Difference]: With dead ends: 309 [2018-10-02 12:20:47,464 INFO L226 Difference]: Without dead ends: 307 [2018-10-02 12:20:47,465 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 0.8s impTime [2018-10-02 12:20:47,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-10-02 12:20:47,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2018-10-02 12:20:47,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-10-02 12:20:47,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 307 transitions. [2018-10-02 12:20:47,467 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 307 transitions. Word has length 302 [2018-10-02 12:20:47,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:47,468 INFO L480 AbstractCegarLoop]: Abstraction has 307 states and 307 transitions. [2018-10-02 12:20:47,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-02 12:20:47,468 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 307 transitions. [2018-10-02 12:20:47,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-10-02 12:20:47,469 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:47,469 INFO L375 BasicCegarLoop]: trace histogram [75, 75, 75, 75, 1, 1, 1, 1, 1, 1] [2018-10-02 12:20:47,469 INFO L423 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:47,469 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:47,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1709253542, now seen corresponding path program 75 times [2018-10-02 12:20:47,470 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:47,470 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:47,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:47,470 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:47,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:47,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:48,930 INFO L134 CoverageAnalysis]: Checked inductivity of 11175 backedges. 0 proven. 11175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:48,930 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:48,930 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:48,938 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:20:49,048 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2018-10-02 12:20:49,048 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:49,051 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:49,549 INFO L134 CoverageAnalysis]: Checked inductivity of 11175 backedges. 0 proven. 11175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:49,568 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:49,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-02 12:20:49,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-02 12:20:49,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-02 12:20:49,570 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:49,570 INFO L87 Difference]: Start difference. First operand 307 states and 307 transitions. Second operand 78 states. [2018-10-02 12:20:50,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:50,163 INFO L93 Difference]: Finished difference Result 313 states and 313 transitions. [2018-10-02 12:20:50,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-02 12:20:50,163 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 306 [2018-10-02 12:20:50,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:50,165 INFO L225 Difference]: With dead ends: 313 [2018-10-02 12:20:50,165 INFO L226 Difference]: Without dead ends: 311 [2018-10-02 12:20:50,165 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.2s impTime [2018-10-02 12:20:50,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-10-02 12:20:50,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2018-10-02 12:20:50,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2018-10-02 12:20:50,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 311 transitions. [2018-10-02 12:20:50,168 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 311 transitions. Word has length 306 [2018-10-02 12:20:50,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:50,168 INFO L480 AbstractCegarLoop]: Abstraction has 311 states and 311 transitions. [2018-10-02 12:20:50,168 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-02 12:20:50,168 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 311 transitions. [2018-10-02 12:20:50,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-10-02 12:20:50,169 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:50,169 INFO L375 BasicCegarLoop]: trace histogram [76, 76, 76, 76, 1, 1, 1, 1, 1, 1] [2018-10-02 12:20:50,169 INFO L423 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:50,169 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:50,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1586916612, now seen corresponding path program 76 times [2018-10-02 12:20:50,170 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:50,170 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:50,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:50,170 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:50,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:50,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:51,018 INFO L134 CoverageAnalysis]: Checked inductivity of 11476 backedges. 0 proven. 11476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:51,019 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:51,019 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:51,026 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:20:51,086 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:20:51,086 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:51,089 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:51,752 INFO L134 CoverageAnalysis]: Checked inductivity of 11476 backedges. 0 proven. 11476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:51,772 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:51,772 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-10-02 12:20:51,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-02 12:20:51,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-02 12:20:51,773 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:51,774 INFO L87 Difference]: Start difference. First operand 311 states and 311 transitions. Second operand 79 states. [2018-10-02 12:20:52,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:52,159 INFO L93 Difference]: Finished difference Result 317 states and 317 transitions. [2018-10-02 12:20:52,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-02 12:20:52,160 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 310 [2018-10-02 12:20:52,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:52,161 INFO L225 Difference]: With dead ends: 317 [2018-10-02 12:20:52,161 INFO L226 Difference]: Without dead ends: 315 [2018-10-02 12:20:52,162 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.6s impTime [2018-10-02 12:20:52,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-10-02 12:20:52,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2018-10-02 12:20:52,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-10-02 12:20:52,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 315 transitions. [2018-10-02 12:20:52,164 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 315 transitions. Word has length 310 [2018-10-02 12:20:52,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:52,164 INFO L480 AbstractCegarLoop]: Abstraction has 315 states and 315 transitions. [2018-10-02 12:20:52,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-02 12:20:52,164 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 315 transitions. [2018-10-02 12:20:52,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-10-02 12:20:52,165 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:52,166 INFO L375 BasicCegarLoop]: trace histogram [77, 77, 77, 77, 1, 1, 1, 1, 1, 1] [2018-10-02 12:20:52,166 INFO L423 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:52,166 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:52,166 INFO L82 PathProgramCache]: Analyzing trace with hash 102865070, now seen corresponding path program 77 times [2018-10-02 12:20:52,166 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:52,166 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:52,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:52,167 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:52,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:53,502 INFO L134 CoverageAnalysis]: Checked inductivity of 11781 backedges. 0 proven. 11781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:53,503 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:53,503 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:53,510 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:20:53,628 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2018-10-02 12:20:53,629 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:53,632 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:54,149 INFO L134 CoverageAnalysis]: Checked inductivity of 11781 backedges. 0 proven. 11781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:54,170 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:54,170 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-02 12:20:54,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-02 12:20:54,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-02 12:20:54,171 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:54,171 INFO L87 Difference]: Start difference. First operand 315 states and 315 transitions. Second operand 80 states. [2018-10-02 12:20:54,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:54,630 INFO L93 Difference]: Finished difference Result 321 states and 321 transitions. [2018-10-02 12:20:54,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-02 12:20:54,630 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 314 [2018-10-02 12:20:54,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:54,632 INFO L225 Difference]: With dead ends: 321 [2018-10-02 12:20:54,632 INFO L226 Difference]: Without dead ends: 319 [2018-10-02 12:20:54,632 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 0.9s impTime [2018-10-02 12:20:54,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-10-02 12:20:54,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-10-02 12:20:54,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-10-02 12:20:54,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 319 transitions. [2018-10-02 12:20:54,634 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 319 transitions. Word has length 314 [2018-10-02 12:20:54,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:54,635 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 319 transitions. [2018-10-02 12:20:54,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-02 12:20:54,635 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 319 transitions. [2018-10-02 12:20:54,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-10-02 12:20:54,636 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:54,636 INFO L375 BasicCegarLoop]: trace histogram [78, 78, 78, 78, 1, 1, 1, 1, 1, 1] [2018-10-02 12:20:54,636 INFO L423 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:54,636 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:54,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1467670360, now seen corresponding path program 78 times [2018-10-02 12:20:54,636 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:54,636 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:54,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:54,637 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:54,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:55,825 INFO L134 CoverageAnalysis]: Checked inductivity of 12090 backedges. 0 proven. 12090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:55,826 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:55,826 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:55,834 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:20:55,950 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2018-10-02 12:20:55,950 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:55,955 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:56,746 INFO L134 CoverageAnalysis]: Checked inductivity of 12090 backedges. 0 proven. 12090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:56,766 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:56,767 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-10-02 12:20:56,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-02 12:20:56,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-02 12:20:56,768 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:56,768 INFO L87 Difference]: Start difference. First operand 319 states and 319 transitions. Second operand 81 states. [2018-10-02 12:20:57,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:57,218 INFO L93 Difference]: Finished difference Result 325 states and 325 transitions. [2018-10-02 12:20:57,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-02 12:20:57,218 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 318 [2018-10-02 12:20:57,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:57,220 INFO L225 Difference]: With dead ends: 325 [2018-10-02 12:20:57,220 INFO L226 Difference]: Without dead ends: 323 [2018-10-02 12:20:57,221 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 0.9s impTime [2018-10-02 12:20:57,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-10-02 12:20:57,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2018-10-02 12:20:57,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-10-02 12:20:57,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 323 transitions. [2018-10-02 12:20:57,224 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 323 transitions. Word has length 318 [2018-10-02 12:20:57,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:57,224 INFO L480 AbstractCegarLoop]: Abstraction has 323 states and 323 transitions. [2018-10-02 12:20:57,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-02 12:20:57,224 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 323 transitions. [2018-10-02 12:20:57,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-10-02 12:20:57,225 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:57,225 INFO L375 BasicCegarLoop]: trace histogram [79, 79, 79, 79, 1, 1, 1, 1, 1, 1] [2018-10-02 12:20:57,226 INFO L423 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:57,226 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:57,226 INFO L82 PathProgramCache]: Analyzing trace with hash 941408514, now seen corresponding path program 79 times [2018-10-02 12:20:57,226 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:57,226 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:57,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:57,227 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:57,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:58,142 INFO L134 CoverageAnalysis]: Checked inductivity of 12403 backedges. 0 proven. 12403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:58,142 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:58,142 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:58,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:58,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:58,213 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:58,762 INFO L134 CoverageAnalysis]: Checked inductivity of 12403 backedges. 0 proven. 12403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:58,782 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:58,782 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-02 12:20:58,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-02 12:20:58,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-02 12:20:58,783 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:58,783 INFO L87 Difference]: Start difference. First operand 323 states and 323 transitions. Second operand 82 states. [2018-10-02 12:20:59,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:59,237 INFO L93 Difference]: Finished difference Result 329 states and 329 transitions. [2018-10-02 12:20:59,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-02 12:20:59,237 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 322 [2018-10-02 12:20:59,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:59,239 INFO L225 Difference]: With dead ends: 329 [2018-10-02 12:20:59,239 INFO L226 Difference]: Without dead ends: 327 [2018-10-02 12:20:59,240 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.6s impTime [2018-10-02 12:20:59,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-10-02 12:20:59,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2018-10-02 12:20:59,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-10-02 12:20:59,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 327 transitions. [2018-10-02 12:20:59,243 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 327 transitions. Word has length 322 [2018-10-02 12:20:59,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:59,243 INFO L480 AbstractCegarLoop]: Abstraction has 327 states and 327 transitions. [2018-10-02 12:20:59,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-02 12:20:59,243 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 327 transitions. [2018-10-02 12:20:59,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-10-02 12:20:59,244 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:59,244 INFO L375 BasicCegarLoop]: trace histogram [80, 80, 80, 80, 1, 1, 1, 1, 1, 1] [2018-10-02 12:20:59,244 INFO L423 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:59,244 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:59,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1279376812, now seen corresponding path program 80 times [2018-10-02 12:20:59,245 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:59,245 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:59,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:59,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:59,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:59,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:00,866 INFO L134 CoverageAnalysis]: Checked inductivity of 12720 backedges. 0 proven. 12720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:00,866 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:00,866 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:00,874 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:21:00,935 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:21:00,935 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:00,939 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:01,622 INFO L134 CoverageAnalysis]: Checked inductivity of 12720 backedges. 0 proven. 12720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:01,641 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:01,642 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-10-02 12:21:01,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-02 12:21:01,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-02 12:21:01,643 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:01,643 INFO L87 Difference]: Start difference. First operand 327 states and 327 transitions. Second operand 83 states. [2018-10-02 12:21:02,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:02,312 INFO L93 Difference]: Finished difference Result 333 states and 333 transitions. [2018-10-02 12:21:02,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-02 12:21:02,313 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 326 [2018-10-02 12:21:02,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:02,315 INFO L225 Difference]: With dead ends: 333 [2018-10-02 12:21:02,315 INFO L226 Difference]: Without dead ends: 331 [2018-10-02 12:21:02,315 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.3s impTime [2018-10-02 12:21:02,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-10-02 12:21:02,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2018-10-02 12:21:02,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-10-02 12:21:02,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 331 transitions. [2018-10-02 12:21:02,318 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 331 transitions. Word has length 326 [2018-10-02 12:21:02,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:02,319 INFO L480 AbstractCegarLoop]: Abstraction has 331 states and 331 transitions. [2018-10-02 12:21:02,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-02 12:21:02,319 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 331 transitions. [2018-10-02 12:21:02,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-10-02 12:21:02,320 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:02,320 INFO L375 BasicCegarLoop]: trace histogram [81, 81, 81, 81, 1, 1, 1, 1, 1, 1] [2018-10-02 12:21:02,320 INFO L423 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:02,320 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:02,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1763420842, now seen corresponding path program 81 times [2018-10-02 12:21:02,320 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:02,320 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:02,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:02,321 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:02,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:02,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:03,372 INFO L134 CoverageAnalysis]: Checked inductivity of 13041 backedges. 0 proven. 13041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:03,372 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:03,372 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:03,380 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:21:03,503 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s) [2018-10-02 12:21:03,504 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:03,507 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:04,058 INFO L134 CoverageAnalysis]: Checked inductivity of 13041 backedges. 0 proven. 13041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:04,078 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:04,078 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-10-02 12:21:04,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-02 12:21:04,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-02 12:21:04,079 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:04,079 INFO L87 Difference]: Start difference. First operand 331 states and 331 transitions. Second operand 84 states. [2018-10-02 12:21:05,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:05,669 INFO L93 Difference]: Finished difference Result 337 states and 337 transitions. [2018-10-02 12:21:05,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-02 12:21:05,669 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 330 [2018-10-02 12:21:05,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:05,671 INFO L225 Difference]: With dead ends: 337 [2018-10-02 12:21:05,671 INFO L226 Difference]: Without dead ends: 335 [2018-10-02 12:21:05,671 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.7s impTime [2018-10-02 12:21:05,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-10-02 12:21:05,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2018-10-02 12:21:05,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-10-02 12:21:05,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 335 transitions. [2018-10-02 12:21:05,675 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 335 transitions. Word has length 330 [2018-10-02 12:21:05,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:05,675 INFO L480 AbstractCegarLoop]: Abstraction has 335 states and 335 transitions. [2018-10-02 12:21:05,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-02 12:21:05,675 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 335 transitions. [2018-10-02 12:21:05,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-10-02 12:21:05,676 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:05,676 INFO L375 BasicCegarLoop]: trace histogram [82, 82, 82, 82, 1, 1, 1, 1, 1, 1] [2018-10-02 12:21:05,676 INFO L423 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:05,676 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:05,677 INFO L82 PathProgramCache]: Analyzing trace with hash 431949824, now seen corresponding path program 82 times [2018-10-02 12:21:05,677 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:05,677 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:05,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:05,677 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:05,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:07,171 INFO L134 CoverageAnalysis]: Checked inductivity of 13366 backedges. 0 proven. 13366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:07,172 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:07,172 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:07,179 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:21:07,242 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:21:07,243 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:07,247 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:07,914 INFO L134 CoverageAnalysis]: Checked inductivity of 13366 backedges. 0 proven. 13366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:07,935 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:07,936 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-10-02 12:21:07,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-02 12:21:07,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-02 12:21:07,937 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:07,937 INFO L87 Difference]: Start difference. First operand 335 states and 335 transitions. Second operand 85 states. [2018-10-02 12:21:08,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:08,395 INFO L93 Difference]: Finished difference Result 341 states and 341 transitions. [2018-10-02 12:21:08,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-02 12:21:08,395 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 334 [2018-10-02 12:21:08,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:08,396 INFO L225 Difference]: With dead ends: 341 [2018-10-02 12:21:08,396 INFO L226 Difference]: Without dead ends: 339 [2018-10-02 12:21:08,397 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.1s impTime [2018-10-02 12:21:08,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-10-02 12:21:08,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2018-10-02 12:21:08,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-10-02 12:21:08,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 339 transitions. [2018-10-02 12:21:08,400 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 339 transitions. Word has length 334 [2018-10-02 12:21:08,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:08,400 INFO L480 AbstractCegarLoop]: Abstraction has 339 states and 339 transitions. [2018-10-02 12:21:08,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-02 12:21:08,400 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 339 transitions. [2018-10-02 12:21:08,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-10-02 12:21:08,401 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:08,401 INFO L375 BasicCegarLoop]: trace histogram [83, 83, 83, 83, 1, 1, 1, 1, 1, 1] [2018-10-02 12:21:08,402 INFO L423 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:08,402 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:08,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1967936938, now seen corresponding path program 83 times [2018-10-02 12:21:08,402 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:08,402 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:08,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:08,403 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:08,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:09,433 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:09,434 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:09,434 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:09,442 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:21:09,572 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2018-10-02 12:21:09,572 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:09,576 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:10,141 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:10,162 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:10,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-02 12:21:10,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-02 12:21:10,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-02 12:21:10,163 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:10,163 INFO L87 Difference]: Start difference. First operand 339 states and 339 transitions. Second operand 86 states. [2018-10-02 12:21:10,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:10,618 INFO L93 Difference]: Finished difference Result 345 states and 345 transitions. [2018-10-02 12:21:10,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-02 12:21:10,618 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 338 [2018-10-02 12:21:10,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:10,620 INFO L225 Difference]: With dead ends: 345 [2018-10-02 12:21:10,620 INFO L226 Difference]: Without dead ends: 343 [2018-10-02 12:21:10,620 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.7s impTime [2018-10-02 12:21:10,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-10-02 12:21:10,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2018-10-02 12:21:10,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-10-02 12:21:10,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 343 transitions. [2018-10-02 12:21:10,623 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 343 transitions. Word has length 338 [2018-10-02 12:21:10,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:10,623 INFO L480 AbstractCegarLoop]: Abstraction has 343 states and 343 transitions. [2018-10-02 12:21:10,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-02 12:21:10,623 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 343 transitions. [2018-10-02 12:21:10,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-10-02 12:21:10,625 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:10,625 INFO L375 BasicCegarLoop]: trace histogram [84, 84, 84, 84, 1, 1, 1, 1, 1, 1] [2018-10-02 12:21:10,625 INFO L423 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:10,625 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:10,626 INFO L82 PathProgramCache]: Analyzing trace with hash -2000241068, now seen corresponding path program 84 times [2018-10-02 12:21:10,626 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:10,626 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:10,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:10,626 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:10,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:12,066 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 14028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:12,067 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:12,067 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:12,085 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:21:12,213 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2018-10-02 12:21:12,213 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:12,217 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:12,795 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 14028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:12,815 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:12,816 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-10-02 12:21:12,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-02 12:21:12,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-02 12:21:12,817 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:12,817 INFO L87 Difference]: Start difference. First operand 343 states and 343 transitions. Second operand 87 states. [2018-10-02 12:21:13,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:13,473 INFO L93 Difference]: Finished difference Result 349 states and 349 transitions. [2018-10-02 12:21:13,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-02 12:21:13,474 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 342 [2018-10-02 12:21:13,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:13,476 INFO L225 Difference]: With dead ends: 349 [2018-10-02 12:21:13,476 INFO L226 Difference]: Without dead ends: 347 [2018-10-02 12:21:13,477 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.1s impTime [2018-10-02 12:21:13,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-10-02 12:21:13,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2018-10-02 12:21:13,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-10-02 12:21:13,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 347 transitions. [2018-10-02 12:21:13,480 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 347 transitions. Word has length 342 [2018-10-02 12:21:13,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:13,481 INFO L480 AbstractCegarLoop]: Abstraction has 347 states and 347 transitions. [2018-10-02 12:21:13,481 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-02 12:21:13,481 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 347 transitions. [2018-10-02 12:21:13,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-10-02 12:21:13,482 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:13,482 INFO L375 BasicCegarLoop]: trace histogram [85, 85, 85, 85, 1, 1, 1, 1, 1, 1] [2018-10-02 12:21:13,482 INFO L423 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:13,482 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:13,483 INFO L82 PathProgramCache]: Analyzing trace with hash 304660990, now seen corresponding path program 85 times [2018-10-02 12:21:13,483 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:13,483 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:13,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:13,483 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:13,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:13,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:15,129 INFO L134 CoverageAnalysis]: Checked inductivity of 14365 backedges. 0 proven. 14365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:15,129 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:15,129 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:15,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:15,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:15,203 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:15,772 INFO L134 CoverageAnalysis]: Checked inductivity of 14365 backedges. 0 proven. 14365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:15,792 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:15,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-02 12:21:15,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-02 12:21:15,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-02 12:21:15,794 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:15,794 INFO L87 Difference]: Start difference. First operand 347 states and 347 transitions. Second operand 88 states. [2018-10-02 12:21:16,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:16,563 INFO L93 Difference]: Finished difference Result 353 states and 353 transitions. [2018-10-02 12:21:16,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-02 12:21:16,563 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 346 [2018-10-02 12:21:16,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:16,565 INFO L225 Difference]: With dead ends: 353 [2018-10-02 12:21:16,565 INFO L226 Difference]: Without dead ends: 351 [2018-10-02 12:21:16,566 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.3s impTime [2018-10-02 12:21:16,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-10-02 12:21:16,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2018-10-02 12:21:16,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-10-02 12:21:16,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 351 transitions. [2018-10-02 12:21:16,568 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 351 transitions. Word has length 346 [2018-10-02 12:21:16,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:16,568 INFO L480 AbstractCegarLoop]: Abstraction has 351 states and 351 transitions. [2018-10-02 12:21:16,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-02 12:21:16,569 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 351 transitions. [2018-10-02 12:21:16,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-10-02 12:21:16,570 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:16,570 INFO L375 BasicCegarLoop]: trace histogram [86, 86, 86, 86, 1, 1, 1, 1, 1, 1] [2018-10-02 12:21:16,570 INFO L423 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:16,570 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:16,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1311563944, now seen corresponding path program 86 times [2018-10-02 12:21:16,570 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:16,571 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:16,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:16,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:16,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:18,322 INFO L134 CoverageAnalysis]: Checked inductivity of 14706 backedges. 0 proven. 14706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:18,322 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:18,322 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:18,330 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:21:18,396 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:21:18,396 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:18,400 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:18,998 INFO L134 CoverageAnalysis]: Checked inductivity of 14706 backedges. 0 proven. 14706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:19,017 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:19,018 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-10-02 12:21:19,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-02 12:21:19,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-02 12:21:19,019 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:19,019 INFO L87 Difference]: Start difference. First operand 351 states and 351 transitions. Second operand 89 states. [2018-10-02 12:21:19,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:19,796 INFO L93 Difference]: Finished difference Result 357 states and 357 transitions. [2018-10-02 12:21:19,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-02 12:21:19,796 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 350 [2018-10-02 12:21:19,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:19,798 INFO L225 Difference]: With dead ends: 357 [2018-10-02 12:21:19,798 INFO L226 Difference]: Without dead ends: 355 [2018-10-02 12:21:19,798 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.4s impTime [2018-10-02 12:21:19,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-10-02 12:21:19,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2018-10-02 12:21:19,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-10-02 12:21:19,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 355 transitions. [2018-10-02 12:21:19,801 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 355 transitions. Word has length 350 [2018-10-02 12:21:19,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:19,801 INFO L480 AbstractCegarLoop]: Abstraction has 355 states and 355 transitions. [2018-10-02 12:21:19,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-02 12:21:19,801 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 355 transitions. [2018-10-02 12:21:19,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-10-02 12:21:19,802 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:19,802 INFO L375 BasicCegarLoop]: trace histogram [87, 87, 87, 87, 1, 1, 1, 1, 1, 1] [2018-10-02 12:21:19,803 INFO L423 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:19,803 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:19,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1739744686, now seen corresponding path program 87 times [2018-10-02 12:21:19,803 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:19,803 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:19,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:19,804 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:19,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:21,028 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 15051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:21,029 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:21,029 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:21,037 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:21:21,185 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 88 check-sat command(s) [2018-10-02 12:21:21,186 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:21,190 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:21,773 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 15051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:21,795 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:21,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-10-02 12:21:21,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-02 12:21:21,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-02 12:21:21,797 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:21,797 INFO L87 Difference]: Start difference. First operand 355 states and 355 transitions. Second operand 90 states. [2018-10-02 12:21:22,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:22,433 INFO L93 Difference]: Finished difference Result 361 states and 361 transitions. [2018-10-02 12:21:22,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-02 12:21:22,434 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 354 [2018-10-02 12:21:22,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:22,435 INFO L225 Difference]: With dead ends: 361 [2018-10-02 12:21:22,435 INFO L226 Difference]: Without dead ends: 359 [2018-10-02 12:21:22,436 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 0.9s impTime [2018-10-02 12:21:22,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-10-02 12:21:22,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2018-10-02 12:21:22,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-10-02 12:21:22,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 359 transitions. [2018-10-02 12:21:22,438 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 359 transitions. Word has length 354 [2018-10-02 12:21:22,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:22,438 INFO L480 AbstractCegarLoop]: Abstraction has 359 states and 359 transitions. [2018-10-02 12:21:22,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-02 12:21:22,439 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 359 transitions. [2018-10-02 12:21:22,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-10-02 12:21:22,440 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:22,440 INFO L375 BasicCegarLoop]: trace histogram [88, 88, 88, 88, 1, 1, 1, 1, 1, 1] [2018-10-02 12:21:22,440 INFO L423 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:22,440 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:22,440 INFO L82 PathProgramCache]: Analyzing trace with hash 180711164, now seen corresponding path program 88 times [2018-10-02 12:21:22,440 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:22,441 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:22,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:22,441 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:22,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:23,795 INFO L134 CoverageAnalysis]: Checked inductivity of 15400 backedges. 0 proven. 15400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:23,795 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:23,795 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:23,804 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:21:23,886 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:21:23,887 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:23,892 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:24,532 INFO L134 CoverageAnalysis]: Checked inductivity of 15400 backedges. 0 proven. 15400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:24,552 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:24,552 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-10-02 12:21:24,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-02 12:21:24,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-02 12:21:24,553 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:24,553 INFO L87 Difference]: Start difference. First operand 359 states and 359 transitions. Second operand 91 states. [2018-10-02 12:21:25,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:25,224 INFO L93 Difference]: Finished difference Result 365 states and 365 transitions. [2018-10-02 12:21:25,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-02 12:21:25,224 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 358 [2018-10-02 12:21:25,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:25,226 INFO L225 Difference]: With dead ends: 365 [2018-10-02 12:21:25,226 INFO L226 Difference]: Without dead ends: 363 [2018-10-02 12:21:25,227 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.0s impTime [2018-10-02 12:21:25,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-10-02 12:21:25,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2018-10-02 12:21:25,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-10-02 12:21:25,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 363 transitions. [2018-10-02 12:21:25,230 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 363 transitions. Word has length 358 [2018-10-02 12:21:25,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:25,230 INFO L480 AbstractCegarLoop]: Abstraction has 363 states and 363 transitions. [2018-10-02 12:21:25,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-02 12:21:25,231 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 363 transitions. [2018-10-02 12:21:25,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-10-02 12:21:25,232 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:25,232 INFO L375 BasicCegarLoop]: trace histogram [89, 89, 89, 89, 1, 1, 1, 1, 1, 1] [2018-10-02 12:21:25,232 INFO L423 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:25,232 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:25,232 INFO L82 PathProgramCache]: Analyzing trace with hash 512679590, now seen corresponding path program 89 times [2018-10-02 12:21:25,233 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:25,233 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:25,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:25,233 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:25,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:27,465 INFO L134 CoverageAnalysis]: Checked inductivity of 15753 backedges. 0 proven. 15753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:27,465 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:27,465 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:27,474 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:21:27,627 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2018-10-02 12:21:27,628 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:27,632 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:28,234 INFO L134 CoverageAnalysis]: Checked inductivity of 15753 backedges. 0 proven. 15753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:28,255 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:28,255 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-10-02 12:21:28,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-02 12:21:28,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-02 12:21:28,256 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:28,256 INFO L87 Difference]: Start difference. First operand 363 states and 363 transitions. Second operand 92 states. [2018-10-02 12:21:29,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:29,088 INFO L93 Difference]: Finished difference Result 369 states and 369 transitions. [2018-10-02 12:21:29,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-02 12:21:29,089 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 362 [2018-10-02 12:21:29,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:29,090 INFO L225 Difference]: With dead ends: 369 [2018-10-02 12:21:29,090 INFO L226 Difference]: Without dead ends: 367 [2018-10-02 12:21:29,091 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 1.9s impTime [2018-10-02 12:21:29,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-10-02 12:21:29,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2018-10-02 12:21:29,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2018-10-02 12:21:29,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 367 transitions. [2018-10-02 12:21:29,093 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 367 transitions. Word has length 362 [2018-10-02 12:21:29,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:29,094 INFO L480 AbstractCegarLoop]: Abstraction has 367 states and 367 transitions. [2018-10-02 12:21:29,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-02 12:21:29,094 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 367 transitions. [2018-10-02 12:21:29,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-10-02 12:21:29,095 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:29,095 INFO L375 BasicCegarLoop]: trace histogram [90, 90, 90, 90, 1, 1, 1, 1, 1, 1] [2018-10-02 12:21:29,095 INFO L423 AbstractCegarLoop]: === Iteration 92 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:29,095 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:29,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1264871760, now seen corresponding path program 90 times [2018-10-02 12:21:29,096 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:29,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:29,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:29,096 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:29,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:30,416 INFO L134 CoverageAnalysis]: Checked inductivity of 16110 backedges. 0 proven. 16110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:30,416 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:30,416 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:30,424 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:21:30,604 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2018-10-02 12:21:30,604 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:30,609 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:31,249 INFO L134 CoverageAnalysis]: Checked inductivity of 16110 backedges. 0 proven. 16110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:31,269 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:31,269 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-10-02 12:21:31,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-02 12:21:31,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-02 12:21:31,270 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:31,270 INFO L87 Difference]: Start difference. First operand 367 states and 367 transitions. Second operand 93 states. [2018-10-02 12:21:31,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:31,834 INFO L93 Difference]: Finished difference Result 373 states and 373 transitions. [2018-10-02 12:21:31,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-02 12:21:31,834 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 366 [2018-10-02 12:21:31,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:31,837 INFO L225 Difference]: With dead ends: 373 [2018-10-02 12:21:31,837 INFO L226 Difference]: Without dead ends: 371 [2018-10-02 12:21:31,837 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.0s impTime [2018-10-02 12:21:31,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2018-10-02 12:21:31,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2018-10-02 12:21:31,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2018-10-02 12:21:31,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 371 transitions. [2018-10-02 12:21:31,840 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 371 transitions. Word has length 366 [2018-10-02 12:21:31,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:31,840 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 371 transitions. [2018-10-02 12:21:31,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-02 12:21:31,841 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 371 transitions. [2018-10-02 12:21:31,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-10-02 12:21:31,842 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:31,842 INFO L375 BasicCegarLoop]: trace histogram [91, 91, 91, 91, 1, 1, 1, 1, 1, 1] [2018-10-02 12:21:31,842 INFO L423 AbstractCegarLoop]: === Iteration 93 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:31,842 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:31,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1480552710, now seen corresponding path program 91 times [2018-10-02 12:21:31,843 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:31,843 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:31,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:31,843 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:31,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:34,060 INFO L134 CoverageAnalysis]: Checked inductivity of 16471 backedges. 0 proven. 16471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:34,060 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:34,060 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:34,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:34,137 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:34,776 INFO L134 CoverageAnalysis]: Checked inductivity of 16471 backedges. 0 proven. 16471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:34,797 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:34,797 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-10-02 12:21:34,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-02 12:21:34,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-02 12:21:34,798 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:34,798 INFO L87 Difference]: Start difference. First operand 371 states and 371 transitions. Second operand 94 states. [2018-10-02 12:21:35,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:35,690 INFO L93 Difference]: Finished difference Result 377 states and 377 transitions. [2018-10-02 12:21:35,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-02 12:21:35,690 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 370 [2018-10-02 12:21:35,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:35,692 INFO L225 Difference]: With dead ends: 377 [2018-10-02 12:21:35,692 INFO L226 Difference]: Without dead ends: 375 [2018-10-02 12:21:35,692 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 1.8s impTime [2018-10-02 12:21:35,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-10-02 12:21:35,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2018-10-02 12:21:35,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2018-10-02 12:21:35,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 375 transitions. [2018-10-02 12:21:35,695 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 375 transitions. Word has length 370 [2018-10-02 12:21:35,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:35,696 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 375 transitions. [2018-10-02 12:21:35,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-02 12:21:35,696 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 375 transitions. [2018-10-02 12:21:35,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-10-02 12:21:35,697 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:35,698 INFO L375 BasicCegarLoop]: trace histogram [92, 92, 92, 92, 1, 1, 1, 1, 1, 1] [2018-10-02 12:21:35,698 INFO L423 AbstractCegarLoop]: === Iteration 94 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:35,698 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:35,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1998729308, now seen corresponding path program 92 times [2018-10-02 12:21:35,698 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:35,698 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:35,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:35,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:35,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:35,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:38,126 INFO L134 CoverageAnalysis]: Checked inductivity of 16836 backedges. 0 proven. 16836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:38,126 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:38,126 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:38,134 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:21:38,202 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:21:38,202 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:38,206 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:38,853 INFO L134 CoverageAnalysis]: Checked inductivity of 16836 backedges. 0 proven. 16836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:38,874 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:38,874 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-10-02 12:21:38,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-02 12:21:38,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-02 12:21:38,875 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:38,875 INFO L87 Difference]: Start difference. First operand 375 states and 375 transitions. Second operand 95 states. [2018-10-02 12:21:39,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:39,822 INFO L93 Difference]: Finished difference Result 381 states and 381 transitions. [2018-10-02 12:21:39,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-02 12:21:39,822 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 374 [2018-10-02 12:21:39,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:39,825 INFO L225 Difference]: With dead ends: 381 [2018-10-02 12:21:39,825 INFO L226 Difference]: Without dead ends: 379 [2018-10-02 12:21:39,825 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.0s impTime [2018-10-02 12:21:39,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-10-02 12:21:39,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2018-10-02 12:21:39,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-10-02 12:21:39,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 379 transitions. [2018-10-02 12:21:39,828 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 379 transitions. Word has length 374 [2018-10-02 12:21:39,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:39,829 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 379 transitions. [2018-10-02 12:21:39,829 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-02 12:21:39,829 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 379 transitions. [2018-10-02 12:21:39,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-10-02 12:21:39,830 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:39,830 INFO L375 BasicCegarLoop]: trace histogram [93, 93, 93, 93, 1, 1, 1, 1, 1, 1] [2018-10-02 12:21:39,831 INFO L423 AbstractCegarLoop]: === Iteration 95 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:39,831 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:39,831 INFO L82 PathProgramCache]: Analyzing trace with hash 582396750, now seen corresponding path program 93 times [2018-10-02 12:21:39,831 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:39,831 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:39,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:39,831 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:39,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:39,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:41,995 INFO L134 CoverageAnalysis]: Checked inductivity of 17205 backedges. 0 proven. 17205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:41,995 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:41,995 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:42,003 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:21:42,154 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 94 check-sat command(s) [2018-10-02 12:21:42,154 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:42,159 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:42,983 INFO L134 CoverageAnalysis]: Checked inductivity of 17205 backedges. 0 proven. 17205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:43,004 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:43,004 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-10-02 12:21:43,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-02 12:21:43,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-02 12:21:43,006 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:43,006 INFO L87 Difference]: Start difference. First operand 379 states and 379 transitions. Second operand 96 states. [2018-10-02 12:21:43,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:43,941 INFO L93 Difference]: Finished difference Result 385 states and 385 transitions. [2018-10-02 12:21:43,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-02 12:21:43,941 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 378 [2018-10-02 12:21:43,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:43,943 INFO L225 Difference]: With dead ends: 385 [2018-10-02 12:21:43,943 INFO L226 Difference]: Without dead ends: 383 [2018-10-02 12:21:43,944 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 1.8s impTime [2018-10-02 12:21:43,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-10-02 12:21:43,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2018-10-02 12:21:43,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-10-02 12:21:43,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 383 transitions. [2018-10-02 12:21:43,947 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 383 transitions. Word has length 378 [2018-10-02 12:21:43,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:43,947 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 383 transitions. [2018-10-02 12:21:43,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-02 12:21:43,947 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 383 transitions. [2018-10-02 12:21:43,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-10-02 12:21:43,948 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:43,949 INFO L375 BasicCegarLoop]: trace histogram [94, 94, 94, 94, 1, 1, 1, 1, 1, 1] [2018-10-02 12:21:43,949 INFO L423 AbstractCegarLoop]: === Iteration 96 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:43,949 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:43,949 INFO L82 PathProgramCache]: Analyzing trace with hash 671457784, now seen corresponding path program 94 times [2018-10-02 12:21:43,949 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:43,949 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:43,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:43,950 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:43,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:43,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:45,576 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:45,577 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:45,577 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:45,584 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:21:45,658 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:21:45,659 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:45,663 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:46,369 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:46,390 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:46,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-10-02 12:21:46,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-02 12:21:46,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-02 12:21:46,392 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:46,392 INFO L87 Difference]: Start difference. First operand 383 states and 383 transitions. Second operand 97 states. [2018-10-02 12:21:47,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:47,096 INFO L93 Difference]: Finished difference Result 389 states and 389 transitions. [2018-10-02 12:21:47,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-02 12:21:47,096 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 382 [2018-10-02 12:21:47,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:47,098 INFO L225 Difference]: With dead ends: 389 [2018-10-02 12:21:47,098 INFO L226 Difference]: Without dead ends: 387 [2018-10-02 12:21:47,098 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.2s impTime [2018-10-02 12:21:47,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-10-02 12:21:47,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2018-10-02 12:21:47,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-10-02 12:21:47,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 387 transitions. [2018-10-02 12:21:47,101 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 387 transitions. Word has length 382 [2018-10-02 12:21:47,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:47,101 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 387 transitions. [2018-10-02 12:21:47,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-02 12:21:47,102 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 387 transitions. [2018-10-02 12:21:47,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-10-02 12:21:47,103 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:47,103 INFO L375 BasicCegarLoop]: trace histogram [95, 95, 95, 95, 1, 1, 1, 1, 1, 1] [2018-10-02 12:21:47,103 INFO L423 AbstractCegarLoop]: === Iteration 97 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:47,103 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:47,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1782920098, now seen corresponding path program 95 times [2018-10-02 12:21:47,104 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:47,104 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:47,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:47,104 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:47,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:49,015 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:49,016 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:49,016 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:49,024 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:21:49,181 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 96 check-sat command(s) [2018-10-02 12:21:49,181 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:49,186 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:49,842 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:49,863 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:49,863 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-10-02 12:21:49,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-02 12:21:49,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-02 12:21:49,864 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:49,864 INFO L87 Difference]: Start difference. First operand 387 states and 387 transitions. Second operand 98 states. [2018-10-02 12:21:50,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:50,706 INFO L93 Difference]: Finished difference Result 393 states and 393 transitions. [2018-10-02 12:21:50,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-02 12:21:50,706 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 386 [2018-10-02 12:21:50,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:50,708 INFO L225 Difference]: With dead ends: 393 [2018-10-02 12:21:50,708 INFO L226 Difference]: Without dead ends: 391 [2018-10-02 12:21:50,708 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.5s impTime [2018-10-02 12:21:50,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2018-10-02 12:21:50,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2018-10-02 12:21:50,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2018-10-02 12:21:50,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 391 transitions. [2018-10-02 12:21:50,711 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 391 transitions. Word has length 386 [2018-10-02 12:21:50,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:50,711 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 391 transitions. [2018-10-02 12:21:50,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-02 12:21:50,711 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 391 transitions. [2018-10-02 12:21:50,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-10-02 12:21:50,713 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:50,713 INFO L375 BasicCegarLoop]: trace histogram [96, 96, 96, 96, 1, 1, 1, 1, 1, 1] [2018-10-02 12:21:50,713 INFO L423 AbstractCegarLoop]: === Iteration 98 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:50,713 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:50,713 INFO L82 PathProgramCache]: Analyzing trace with hash 2041569356, now seen corresponding path program 96 times [2018-10-02 12:21:50,713 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:50,713 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:50,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:50,714 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:50,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:52,261 INFO L134 CoverageAnalysis]: Checked inductivity of 18336 backedges. 0 proven. 18336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:52,261 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:52,262 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:52,269 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:21:52,422 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 97 check-sat command(s) [2018-10-02 12:21:52,422 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:52,427 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:53,344 INFO L134 CoverageAnalysis]: Checked inductivity of 18336 backedges. 0 proven. 18336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:53,365 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:53,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-10-02 12:21:53,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-10-02 12:21:53,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-10-02 12:21:53,366 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:53,366 INFO L87 Difference]: Start difference. First operand 391 states and 391 transitions. Second operand 99 states. [2018-10-02 12:21:54,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:54,042 INFO L93 Difference]: Finished difference Result 397 states and 397 transitions. [2018-10-02 12:21:54,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-02 12:21:54,043 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 390 [2018-10-02 12:21:54,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:54,045 INFO L225 Difference]: With dead ends: 397 [2018-10-02 12:21:54,045 INFO L226 Difference]: Without dead ends: 395 [2018-10-02 12:21:54,046 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.2s impTime [2018-10-02 12:21:54,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2018-10-02 12:21:54,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2018-10-02 12:21:54,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2018-10-02 12:21:54,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 395 transitions. [2018-10-02 12:21:54,049 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 395 transitions. Word has length 390 [2018-10-02 12:21:54,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:54,049 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 395 transitions. [2018-10-02 12:21:54,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-10-02 12:21:54,049 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 395 transitions. [2018-10-02 12:21:54,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-10-02 12:21:54,051 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:54,051 INFO L375 BasicCegarLoop]: trace histogram [97, 97, 97, 97, 1, 1, 1, 1, 1, 1] [2018-10-02 12:21:54,051 INFO L423 AbstractCegarLoop]: === Iteration 99 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:54,051 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:54,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1161832438, now seen corresponding path program 97 times [2018-10-02 12:21:54,051 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:54,051 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:54,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:54,052 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:54,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:54,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:55,737 INFO L134 CoverageAnalysis]: Checked inductivity of 18721 backedges. 0 proven. 18721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:55,738 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:55,738 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:55,745 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:55,821 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:56,511 INFO L134 CoverageAnalysis]: Checked inductivity of 18721 backedges. 0 proven. 18721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:56,532 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:56,533 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-10-02 12:21:56,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-02 12:21:56,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-02 12:21:56,534 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:56,534 INFO L87 Difference]: Start difference. First operand 395 states and 395 transitions. Second operand 100 states. [2018-10-02 12:21:57,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:57,402 INFO L93 Difference]: Finished difference Result 401 states and 401 transitions. [2018-10-02 12:21:57,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-02 12:21:57,403 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 394 [2018-10-02 12:21:57,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:57,404 INFO L225 Difference]: With dead ends: 401 [2018-10-02 12:21:57,404 INFO L226 Difference]: Without dead ends: 399 [2018-10-02 12:21:57,404 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.3s impTime [2018-10-02 12:21:57,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-10-02 12:21:57,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2018-10-02 12:21:57,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2018-10-02 12:21:57,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 399 transitions. [2018-10-02 12:21:57,407 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 399 transitions. Word has length 394 [2018-10-02 12:21:57,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:57,407 INFO L480 AbstractCegarLoop]: Abstraction has 399 states and 399 transitions. [2018-10-02 12:21:57,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-02 12:21:57,407 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 399 transitions. [2018-10-02 12:21:57,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-10-02 12:21:57,409 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:57,409 INFO L375 BasicCegarLoop]: trace histogram [98, 98, 98, 98, 1, 1, 1, 1, 1, 1] [2018-10-02 12:21:57,409 INFO L423 AbstractCegarLoop]: === Iteration 100 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:57,409 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:57,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1162835296, now seen corresponding path program 98 times [2018-10-02 12:21:57,409 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:57,410 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:57,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:57,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:57,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:59,262 INFO L134 CoverageAnalysis]: Checked inductivity of 19110 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:59,263 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:59,263 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:21:59,270 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:21:59,341 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:21:59,342 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:59,347 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:00,032 INFO L134 CoverageAnalysis]: Checked inductivity of 19110 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:00,053 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:00,053 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-10-02 12:22:00,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-02 12:22:00,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-02 12:22:00,054 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:00,054 INFO L87 Difference]: Start difference. First operand 399 states and 399 transitions. Second operand 101 states. [2018-10-02 12:22:00,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:00,837 INFO L93 Difference]: Finished difference Result 405 states and 405 transitions. [2018-10-02 12:22:00,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-02 12:22:00,838 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 398 [2018-10-02 12:22:00,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:00,839 INFO L225 Difference]: With dead ends: 405 [2018-10-02 12:22:00,839 INFO L226 Difference]: Without dead ends: 403 [2018-10-02 12:22:00,839 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.4s impTime [2018-10-02 12:22:00,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2018-10-02 12:22:00,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2018-10-02 12:22:00,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2018-10-02 12:22:00,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 403 transitions. [2018-10-02 12:22:00,842 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 403 transitions. Word has length 398 [2018-10-02 12:22:00,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:00,843 INFO L480 AbstractCegarLoop]: Abstraction has 403 states and 403 transitions. [2018-10-02 12:22:00,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-02 12:22:00,843 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 403 transitions. [2018-10-02 12:22:00,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-10-02 12:22:00,845 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:00,845 INFO L375 BasicCegarLoop]: trace histogram [99, 99, 99, 99, 1, 1, 1, 1, 1, 1] [2018-10-02 12:22:00,845 INFO L423 AbstractCegarLoop]: === Iteration 101 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:00,845 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:00,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1719371850, now seen corresponding path program 99 times [2018-10-02 12:22:00,846 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:00,846 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:00,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:00,846 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:00,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:00,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:02,495 INFO L134 CoverageAnalysis]: Checked inductivity of 19503 backedges. 0 proven. 19503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:02,495 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:02,495 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:02,504 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:22:02,681 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 100 check-sat command(s) [2018-10-02 12:22:02,681 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:02,686 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:03,584 INFO L134 CoverageAnalysis]: Checked inductivity of 19503 backedges. 0 proven. 19503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:03,604 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:03,605 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-10-02 12:22:03,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-02 12:22:03,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-02 12:22:03,606 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:03,606 INFO L87 Difference]: Start difference. First operand 403 states and 403 transitions. Second operand 102 states. [2018-10-02 12:22:04,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:04,488 INFO L93 Difference]: Finished difference Result 409 states and 409 transitions. [2018-10-02 12:22:04,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-02 12:22:04,489 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 402 [2018-10-02 12:22:04,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:04,491 INFO L225 Difference]: With dead ends: 409 [2018-10-02 12:22:04,491 INFO L226 Difference]: Without dead ends: 407 [2018-10-02 12:22:04,491 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.2s impTime [2018-10-02 12:22:04,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-10-02 12:22:04,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2018-10-02 12:22:04,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-10-02 12:22:04,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 407 transitions. [2018-10-02 12:22:04,496 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 407 transitions. Word has length 402 [2018-10-02 12:22:04,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:04,496 INFO L480 AbstractCegarLoop]: Abstraction has 407 states and 407 transitions. [2018-10-02 12:22:04,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-02 12:22:04,496 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 407 transitions. [2018-10-02 12:22:04,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-10-02 12:22:04,498 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:04,499 INFO L375 BasicCegarLoop]: trace histogram [100, 100, 100, 100, 1, 1, 1, 1, 1, 1] [2018-10-02 12:22:04,499 INFO L423 AbstractCegarLoop]: === Iteration 102 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:04,499 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:04,499 INFO L82 PathProgramCache]: Analyzing trace with hash 333160692, now seen corresponding path program 100 times [2018-10-02 12:22:04,499 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:04,499 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:04,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:04,500 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:04,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:06,885 INFO L134 CoverageAnalysis]: Checked inductivity of 19900 backedges. 0 proven. 19900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:06,886 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:06,886 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:06,894 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:22:06,976 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:22:06,977 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:06,982 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:07,692 INFO L134 CoverageAnalysis]: Checked inductivity of 19900 backedges. 0 proven. 19900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:07,712 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:07,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-10-02 12:22:07,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-02 12:22:07,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-02 12:22:07,713 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:07,713 INFO L87 Difference]: Start difference. First operand 407 states and 407 transitions. Second operand 103 states. [2018-10-02 12:22:08,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:08,710 INFO L93 Difference]: Finished difference Result 413 states and 413 transitions. [2018-10-02 12:22:08,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-02 12:22:08,710 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 406 [2018-10-02 12:22:08,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:08,712 INFO L225 Difference]: With dead ends: 413 [2018-10-02 12:22:08,712 INFO L226 Difference]: Without dead ends: 411 [2018-10-02 12:22:08,712 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 1.9s impTime [2018-10-02 12:22:08,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2018-10-02 12:22:08,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2018-10-02 12:22:08,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-10-02 12:22:08,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 411 transitions. [2018-10-02 12:22:08,716 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 411 transitions. Word has length 406 [2018-10-02 12:22:08,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:08,717 INFO L480 AbstractCegarLoop]: Abstraction has 411 states and 411 transitions. [2018-10-02 12:22:08,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-02 12:22:08,717 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 411 transitions. [2018-10-02 12:22:08,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-10-02 12:22:08,719 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:08,719 INFO L375 BasicCegarLoop]: trace histogram [101, 101, 101, 101, 1, 1, 1, 1, 1, 1] [2018-10-02 12:22:08,719 INFO L423 AbstractCegarLoop]: === Iteration 103 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:08,719 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:08,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1825264798, now seen corresponding path program 101 times [2018-10-02 12:22:08,720 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:08,720 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:08,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:08,721 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:08,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:08,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:10,990 INFO L134 CoverageAnalysis]: Checked inductivity of 20301 backedges. 0 proven. 20301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:10,991 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:10,991 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:10,999 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:22:11,187 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 102 check-sat command(s) [2018-10-02 12:22:11,187 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:11,192 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:12,046 INFO L134 CoverageAnalysis]: Checked inductivity of 20301 backedges. 0 proven. 20301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:12,068 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:12,068 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-10-02 12:22:12,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-02 12:22:12,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-02 12:22:12,070 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:12,070 INFO L87 Difference]: Start difference. First operand 411 states and 411 transitions. Second operand 104 states. [2018-10-02 12:22:13,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:13,337 INFO L93 Difference]: Finished difference Result 417 states and 417 transitions. [2018-10-02 12:22:13,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-02 12:22:13,337 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 410 [2018-10-02 12:22:13,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:13,339 INFO L225 Difference]: With dead ends: 417 [2018-10-02 12:22:13,339 INFO L226 Difference]: Without dead ends: 415 [2018-10-02 12:22:13,339 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 1.8s impTime [2018-10-02 12:22:13,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2018-10-02 12:22:13,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2018-10-02 12:22:13,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2018-10-02 12:22:13,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 415 transitions. [2018-10-02 12:22:13,344 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 415 transitions. Word has length 410 [2018-10-02 12:22:13,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:13,344 INFO L480 AbstractCegarLoop]: Abstraction has 415 states and 415 transitions. [2018-10-02 12:22:13,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-02 12:22:13,344 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 415 transitions. [2018-10-02 12:22:13,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-10-02 12:22:13,346 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:13,346 INFO L375 BasicCegarLoop]: trace histogram [102, 102, 102, 102, 1, 1, 1, 1, 1, 1] [2018-10-02 12:22:13,347 INFO L423 AbstractCegarLoop]: === Iteration 104 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:13,347 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:13,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1710939320, now seen corresponding path program 102 times [2018-10-02 12:22:13,347 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:13,347 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:13,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:13,348 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:13,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:15,420 INFO L134 CoverageAnalysis]: Checked inductivity of 20706 backedges. 0 proven. 20706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:15,420 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:15,420 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:15,428 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:22:15,598 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2018-10-02 12:22:15,598 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:15,604 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:16,345 INFO L134 CoverageAnalysis]: Checked inductivity of 20706 backedges. 0 proven. 20706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:16,365 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:16,366 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-10-02 12:22:16,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-10-02 12:22:16,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-10-02 12:22:16,367 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:16,367 INFO L87 Difference]: Start difference. First operand 415 states and 415 transitions. Second operand 105 states. [2018-10-02 12:22:17,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:17,430 INFO L93 Difference]: Finished difference Result 421 states and 421 transitions. [2018-10-02 12:22:17,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-02 12:22:17,430 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 414 [2018-10-02 12:22:17,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:17,431 INFO L225 Difference]: With dead ends: 421 [2018-10-02 12:22:17,431 INFO L226 Difference]: Without dead ends: 419 [2018-10-02 12:22:17,431 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 1.6s impTime [2018-10-02 12:22:17,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2018-10-02 12:22:17,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2018-10-02 12:22:17,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2018-10-02 12:22:17,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 419 transitions. [2018-10-02 12:22:17,434 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 419 transitions. Word has length 414 [2018-10-02 12:22:17,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:17,435 INFO L480 AbstractCegarLoop]: Abstraction has 419 states and 419 transitions. [2018-10-02 12:22:17,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-10-02 12:22:17,435 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 419 transitions. [2018-10-02 12:22:17,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-10-02 12:22:17,436 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:17,436 INFO L375 BasicCegarLoop]: trace histogram [103, 103, 103, 103, 1, 1, 1, 1, 1, 1] [2018-10-02 12:22:17,436 INFO L423 AbstractCegarLoop]: === Iteration 105 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:17,437 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:17,437 INFO L82 PathProgramCache]: Analyzing trace with hash -486306574, now seen corresponding path program 103 times [2018-10-02 12:22:17,437 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:17,437 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:17,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:17,437 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:17,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:17,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:19,978 INFO L134 CoverageAnalysis]: Checked inductivity of 21115 backedges. 0 proven. 21115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:19,979 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:19,979 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:19,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:22:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:20,075 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:20,817 INFO L134 CoverageAnalysis]: Checked inductivity of 21115 backedges. 0 proven. 21115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:20,836 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:20,837 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-10-02 12:22:20,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-02 12:22:20,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-02 12:22:20,838 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:20,838 INFO L87 Difference]: Start difference. First operand 419 states and 419 transitions. Second operand 106 states. [2018-10-02 12:22:21,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:21,962 INFO L93 Difference]: Finished difference Result 425 states and 425 transitions. [2018-10-02 12:22:21,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-02 12:22:21,962 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 418 [2018-10-02 12:22:21,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:21,963 INFO L225 Difference]: With dead ends: 425 [2018-10-02 12:22:21,963 INFO L226 Difference]: Without dead ends: 423 [2018-10-02 12:22:21,963 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.0s impTime [2018-10-02 12:22:21,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-10-02 12:22:21,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2018-10-02 12:22:21,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2018-10-02 12:22:21,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 423 transitions. [2018-10-02 12:22:21,967 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 423 transitions. Word has length 418 [2018-10-02 12:22:21,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:21,967 INFO L480 AbstractCegarLoop]: Abstraction has 423 states and 423 transitions. [2018-10-02 12:22:21,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-02 12:22:21,967 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 423 transitions. [2018-10-02 12:22:21,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-10-02 12:22:21,969 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:21,969 INFO L375 BasicCegarLoop]: trace histogram [104, 104, 104, 104, 1, 1, 1, 1, 1, 1] [2018-10-02 12:22:21,969 INFO L423 AbstractCegarLoop]: === Iteration 106 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:21,970 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:21,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1308692892, now seen corresponding path program 104 times [2018-10-02 12:22:21,970 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:21,970 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:21,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:21,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:22:21,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:22,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:24,799 INFO L134 CoverageAnalysis]: Checked inductivity of 21528 backedges. 0 proven. 21528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:24,800 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:24,800 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:24,808 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:22:24,889 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:22:24,889 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:24,894 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:25,701 INFO L134 CoverageAnalysis]: Checked inductivity of 21528 backedges. 0 proven. 21528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:25,721 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:25,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-10-02 12:22:25,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-10-02 12:22:25,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-10-02 12:22:25,723 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:25,723 INFO L87 Difference]: Start difference. First operand 423 states and 423 transitions. Second operand 107 states. [2018-10-02 12:22:26,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:26,823 INFO L93 Difference]: Finished difference Result 429 states and 429 transitions. [2018-10-02 12:22:26,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-02 12:22:26,823 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 422 [2018-10-02 12:22:26,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:26,824 INFO L225 Difference]: With dead ends: 429 [2018-10-02 12:22:26,824 INFO L226 Difference]: Without dead ends: 427 [2018-10-02 12:22:26,824 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time 2.4s impTime [2018-10-02 12:22:26,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2018-10-02 12:22:26,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2018-10-02 12:22:26,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2018-10-02 12:22:26,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 427 transitions. [2018-10-02 12:22:26,827 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 427 transitions. Word has length 422 [2018-10-02 12:22:26,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:26,827 INFO L480 AbstractCegarLoop]: Abstraction has 427 states and 427 transitions. [2018-10-02 12:22:26,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-10-02 12:22:26,828 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 427 transitions. [2018-10-02 12:22:26,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-10-02 12:22:26,829 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:26,829 INFO L375 BasicCegarLoop]: trace histogram [105, 105, 105, 105, 1, 1, 1, 1, 1, 1] [2018-10-02 12:22:26,829 INFO L423 AbstractCegarLoop]: === Iteration 107 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:26,829 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:26,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1073230150, now seen corresponding path program 105 times [2018-10-02 12:22:26,830 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:26,830 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:26,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:26,830 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:26,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:28,989 INFO L134 CoverageAnalysis]: Checked inductivity of 21945 backedges. 0 proven. 21945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:28,990 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:28,990 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:29,000 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:22:29,203 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 106 check-sat command(s) [2018-10-02 12:22:29,203 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:29,208 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:29,963 INFO L134 CoverageAnalysis]: Checked inductivity of 21945 backedges. 0 proven. 21945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:29,983 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:29,983 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-10-02 12:22:29,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-02 12:22:29,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-02 12:22:29,985 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:29,985 INFO L87 Difference]: Start difference. First operand 427 states and 427 transitions. Second operand 108 states. [2018-10-02 12:22:30,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:30,945 INFO L93 Difference]: Finished difference Result 433 states and 433 transitions. [2018-10-02 12:22:30,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-02 12:22:30,945 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 426 [2018-10-02 12:22:30,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:30,946 INFO L225 Difference]: With dead ends: 433 [2018-10-02 12:22:30,946 INFO L226 Difference]: Without dead ends: 431 [2018-10-02 12:22:30,946 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 1.7s impTime [2018-10-02 12:22:30,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2018-10-02 12:22:30,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2018-10-02 12:22:30,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2018-10-02 12:22:30,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 431 transitions. [2018-10-02 12:22:30,949 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 431 transitions. Word has length 426 [2018-10-02 12:22:30,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:30,949 INFO L480 AbstractCegarLoop]: Abstraction has 431 states and 431 transitions. [2018-10-02 12:22:30,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-02 12:22:30,949 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 431 transitions. [2018-10-02 12:22:30,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2018-10-02 12:22:30,951 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:30,951 INFO L375 BasicCegarLoop]: trace histogram [106, 106, 106, 106, 1, 1, 1, 1, 1, 1] [2018-10-02 12:22:30,951 INFO L423 AbstractCegarLoop]: === Iteration 108 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:30,951 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:30,951 INFO L82 PathProgramCache]: Analyzing trace with hash 480472048, now seen corresponding path program 106 times [2018-10-02 12:22:30,951 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:30,951 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:30,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:30,952 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:30,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:33,101 INFO L134 CoverageAnalysis]: Checked inductivity of 22366 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:33,101 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:33,101 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:33,108 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:22:33,191 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:22:33,192 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:33,196 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:34,142 INFO L134 CoverageAnalysis]: Checked inductivity of 22366 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:34,163 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:34,163 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-10-02 12:22:34,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-10-02 12:22:34,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-10-02 12:22:34,164 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:34,164 INFO L87 Difference]: Start difference. First operand 431 states and 431 transitions. Second operand 109 states. [2018-10-02 12:22:35,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:35,226 INFO L93 Difference]: Finished difference Result 437 states and 437 transitions. [2018-10-02 12:22:35,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-02 12:22:35,226 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 430 [2018-10-02 12:22:35,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:35,228 INFO L225 Difference]: With dead ends: 437 [2018-10-02 12:22:35,228 INFO L226 Difference]: Without dead ends: 435 [2018-10-02 12:22:35,228 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 1.7s impTime [2018-10-02 12:22:35,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2018-10-02 12:22:35,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2018-10-02 12:22:35,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2018-10-02 12:22:35,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 435 transitions. [2018-10-02 12:22:35,231 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 435 transitions. Word has length 430 [2018-10-02 12:22:35,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:35,232 INFO L480 AbstractCegarLoop]: Abstraction has 435 states and 435 transitions. [2018-10-02 12:22:35,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-10-02 12:22:35,232 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 435 transitions. [2018-10-02 12:22:35,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2018-10-02 12:22:35,233 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:35,233 INFO L375 BasicCegarLoop]: trace histogram [107, 107, 107, 107, 1, 1, 1, 1, 1, 1] [2018-10-02 12:22:35,233 INFO L423 AbstractCegarLoop]: === Iteration 109 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:35,233 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:35,234 INFO L82 PathProgramCache]: Analyzing trace with hash -427998822, now seen corresponding path program 107 times [2018-10-02 12:22:35,234 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:35,234 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:35,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:35,234 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:35,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:35,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:37,787 INFO L134 CoverageAnalysis]: Checked inductivity of 22791 backedges. 0 proven. 22791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:37,787 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:37,787 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:37,795 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:22:37,988 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 108 check-sat command(s) [2018-10-02 12:22:37,988 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:37,993 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:38,772 INFO L134 CoverageAnalysis]: Checked inductivity of 22791 backedges. 0 proven. 22791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:38,792 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:38,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-10-02 12:22:38,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-10-02 12:22:38,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-10-02 12:22:38,794 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:38,794 INFO L87 Difference]: Start difference. First operand 435 states and 435 transitions. Second operand 110 states. [2018-10-02 12:22:40,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:40,072 INFO L93 Difference]: Finished difference Result 441 states and 441 transitions. [2018-10-02 12:22:40,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-10-02 12:22:40,072 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 434 [2018-10-02 12:22:40,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:40,073 INFO L225 Difference]: With dead ends: 441 [2018-10-02 12:22:40,074 INFO L226 Difference]: Without dead ends: 439 [2018-10-02 12:22:40,074 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 434 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.1s impTime [2018-10-02 12:22:40,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2018-10-02 12:22:40,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2018-10-02 12:22:40,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2018-10-02 12:22:40,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 439 transitions. [2018-10-02 12:22:40,076 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 439 transitions. Word has length 434 [2018-10-02 12:22:40,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:40,077 INFO L480 AbstractCegarLoop]: Abstraction has 439 states and 439 transitions. [2018-10-02 12:22:40,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-10-02 12:22:40,077 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 439 transitions. [2018-10-02 12:22:40,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2018-10-02 12:22:40,078 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:40,078 INFO L375 BasicCegarLoop]: trace histogram [108, 108, 108, 108, 1, 1, 1, 1, 1, 1] [2018-10-02 12:22:40,078 INFO L423 AbstractCegarLoop]: === Iteration 110 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:40,079 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:40,079 INFO L82 PathProgramCache]: Analyzing trace with hash -557829564, now seen corresponding path program 108 times [2018-10-02 12:22:40,079 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:40,079 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:40,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:40,079 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:40,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:42,228 INFO L134 CoverageAnalysis]: Checked inductivity of 23220 backedges. 0 proven. 23220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:42,228 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:42,228 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:42,235 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:22:42,440 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 109 check-sat command(s) [2018-10-02 12:22:42,441 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:42,445 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:43,231 INFO L134 CoverageAnalysis]: Checked inductivity of 23220 backedges. 0 proven. 23220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:43,251 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:43,251 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2018-10-02 12:22:43,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-10-02 12:22:43,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-10-02 12:22:43,253 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:43,253 INFO L87 Difference]: Start difference. First operand 439 states and 439 transitions. Second operand 111 states. [2018-10-02 12:22:44,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:44,352 INFO L93 Difference]: Finished difference Result 445 states and 445 transitions. [2018-10-02 12:22:44,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-10-02 12:22:44,353 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 438 [2018-10-02 12:22:44,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:44,354 INFO L225 Difference]: With dead ends: 445 [2018-10-02 12:22:44,354 INFO L226 Difference]: Without dead ends: 443 [2018-10-02 12:22:44,354 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 1.7s impTime [2018-10-02 12:22:44,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2018-10-02 12:22:44,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2018-10-02 12:22:44,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2018-10-02 12:22:44,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 443 transitions. [2018-10-02 12:22:44,358 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 443 transitions. Word has length 438 [2018-10-02 12:22:44,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:44,358 INFO L480 AbstractCegarLoop]: Abstraction has 443 states and 443 transitions. [2018-10-02 12:22:44,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-10-02 12:22:44,358 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 443 transitions. [2018-10-02 12:22:44,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2018-10-02 12:22:44,359 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:44,359 INFO L375 BasicCegarLoop]: trace histogram [109, 109, 109, 109, 1, 1, 1, 1, 1, 1] [2018-10-02 12:22:44,360 INFO L423 AbstractCegarLoop]: === Iteration 111 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:44,360 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:44,360 INFO L82 PathProgramCache]: Analyzing trace with hash 627490286, now seen corresponding path program 109 times [2018-10-02 12:22:44,360 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:44,360 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:44,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:44,361 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:44,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-02 12:22:45,186 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-02 12:22:45,191 WARN L205 ceAbstractionStarter]: Timeout [2018-10-02 12:22:45,191 INFO L202 PluginConnector]: Adding new model Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 12:22:45 BoogieIcfgContainer [2018-10-02 12:22:45,191 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-02 12:22:45,192 INFO L168 Benchmark]: Toolchain (without parser) took 237918.78 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -73.4 MB). Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 75.6 MB). Peak memory consumption was 534.5 MB. Max. memory is 7.1 GB. [2018-10-02 12:22:45,194 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-02 12:22:45,194 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.13 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-02 12:22:45,196 INFO L168 Benchmark]: Boogie Preprocessor took 23.29 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-02 12:22:45,197 INFO L168 Benchmark]: RCFGBuilder took 333.99 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-02 12:22:45,198 INFO L168 Benchmark]: TraceAbstraction took 237509.94 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -73.4 MB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 54.5 MB). Peak memory consumption was 513.3 MB. Max. memory is 7.1 GB. [2018-10-02 12:22:45,201 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 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 43.13 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.29 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 333.99 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 237509.94 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -73.4 MB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 54.5 MB). Peak memory consumption was 513.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 41]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 41). Cancelled while BasicCegarLoop was analyzing trace of length 443 with TraceHistMax 109, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while NestedInterpolantsBuilder was constructing predicates for 441 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. TIMEOUT Result, 237.4s OverallTime, 111 OverallIterations, 109 TraceHistogramMax, 49.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 990 SDtfs, 687 SDslu, 20770 SDs, 0 SdLazy, 8893 SolverSat, 228 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30190 GetRequests, 24194 SyntacticMatches, 0 SemanticMatches, 5996 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 156.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=443occurred in iteration=110, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 110 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.7s SsaConstructionTime, 8.3s SatisfiabilityAnalysisTime, 168.5s InterpolantComputationTime, 48396 NumberOfCodeBlocks, 48396 NumberOfCodeBlocksAsserted, 3260 NumberOfCheckSat, 48178 ConstructedInterpolants, 0 QuantifiedInterpolants, 42204998 SizeOfPredicates, 108 NumberOfNonLiveVariables, 36612 ConjunctsInSsa, 6102 ConjunctsInUnsatCore, 218 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1691244 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Luxembourg-ArraysIntegefied.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-02_12-22-45-210.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Luxembourg-ArraysIntegefied.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-02_12-22-45-210.csv Completed graceful shutdown