java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/reducercommutativity/avg40_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-5f7ec6e-m [2018-01-31 08:31:48,745 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-31 08:31:48,746 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-31 08:31:48,760 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-31 08:31:48,760 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-31 08:31:48,761 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-31 08:31:48,762 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-31 08:31:48,763 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-31 08:31:48,764 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-31 08:31:48,765 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-31 08:31:48,765 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-31 08:31:48,765 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-31 08:31:48,766 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-31 08:31:48,767 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-31 08:31:48,767 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-31 08:31:48,770 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-31 08:31:48,771 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-31 08:31:48,772 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-31 08:31:48,772 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-31 08:31:48,773 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-31 08:31:48,774 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-31 08:31:48,783 INFO L98 SettingsManager]: Beginning loading settings from /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf [2018-01-31 08:31:48,789 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-31 08:31:48,790 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-31 08:31:48,790 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-31 08:31:48,790 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-31 08:31:48,790 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-31 08:31:48,790 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-31 08:31:48,790 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-31 08:31:48,791 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-31 08:31:48,793 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-31 08:31:48,793 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-31 08:31:48,793 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-31 08:31:48,793 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-31 08:31:48,793 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-31 08:31:48,793 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-31 08:31:48,794 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-31 08:31:48,794 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-31 08:31:48,794 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-31 08:31:48,794 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-31 08:31:48,794 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-31 08:31:48,794 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-31 08:31:48,794 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-31 08:31:48,794 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-31 08:31:48,794 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-31 08:31:48,794 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 08:31:48,794 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-31 08:31:48,795 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-31 08:31:48,795 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-31 08:31:48,795 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-31 08:31:48,795 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-31 08:31:48,795 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-31 08:31:48,795 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-31 08:31:48,795 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-31 08:31:48,795 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-31 08:31:48,796 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-31 08:31:48,815 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-31 08:31:48,826 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-31 08:31:48,828 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-31 08:31:48,829 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-31 08:31:48,829 INFO L276 PluginConnector]: CDTParser initialized [2018-01-31 08:31:48,831 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/avg40_true-unreach-call.i [2018-01-31 08:31:48,900 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-31 08:31:48,902 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-31 08:31:48,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-31 08:31:48,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-31 08:31:48,907 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-31 08:31:48,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:31:48" (1/1) ... [2018-01-31 08:31:48,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fc2a9b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:31:48, skipping insertion in model container [2018-01-31 08:31:48,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:31:48" (1/1) ... [2018-01-31 08:31:48,919 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 08:31:48,932 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 08:31:49,012 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 08:31:49,028 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 08:31:49,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:31:49 WrapperNode [2018-01-31 08:31:49,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-31 08:31:49,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-31 08:31:49,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-31 08:31:49,033 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-31 08:31:49,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:31:49" (1/1) ... [2018-01-31 08:31:49,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:31:49" (1/1) ... [2018-01-31 08:31:49,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:31:49" (1/1) ... [2018-01-31 08:31:49,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:31:49" (1/1) ... [2018-01-31 08:31:49,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:31:49" (1/1) ... [2018-01-31 08:31:49,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:31:49" (1/1) ... [2018-01-31 08:31:49,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:31:49" (1/1) ... [2018-01-31 08:31:49,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-31 08:31:49,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-31 08:31:49,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-31 08:31:49,053 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-31 08:31:49,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:31:49" (1/1) ... No working directory specified, using /home/daniel/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 [2018-01-31 08:31:49,096 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-31 08:31:49,097 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-31 08:31:49,097 INFO L136 BoogieDeclarations]: Found implementation of procedure avg [2018-01-31 08:31:49,097 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-31 08:31:49,097 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-31 08:31:49,097 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-31 08:31:49,097 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-31 08:31:49,097 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-31 08:31:49,097 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-31 08:31:49,097 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-31 08:31:49,097 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-31 08:31:49,097 INFO L128 BoogieDeclarations]: Found specification of procedure avg [2018-01-31 08:31:49,099 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-31 08:31:49,099 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-31 08:31:49,099 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-31 08:31:49,450 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-31 08:31:49,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:31:49 BoogieIcfgContainer [2018-01-31 08:31:49,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-31 08:31:49,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-31 08:31:49,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-31 08:31:49,453 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-31 08:31:49,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 08:31:48" (1/3) ... [2018-01-31 08:31:49,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e8c879d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:31:49, skipping insertion in model container [2018-01-31 08:31:49,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:31:49" (2/3) ... [2018-01-31 08:31:49,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e8c879d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:31:49, skipping insertion in model container [2018-01-31 08:31:49,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:31:49" (3/3) ... [2018-01-31 08:31:49,455 INFO L107 eAbstractionObserver]: Analyzing ICFG avg40_true-unreach-call.i [2018-01-31 08:31:49,460 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-31 08:31:49,464 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-31 08:31:49,489 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-31 08:31:49,489 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-31 08:31:49,489 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-31 08:31:49,489 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-31 08:31:49,489 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-31 08:31:49,489 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-31 08:31:49,489 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-31 08:31:49,489 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-31 08:31:49,490 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-31 08:31:49,499 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2018-01-31 08:31:49,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-01-31 08:31:49,503 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:31:49,504 INFO L351 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:31:49,504 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0AssertViolation]=== [2018-01-31 08:31:49,507 INFO L82 PathProgramCache]: Analyzing trace with hash 951170667, now seen corresponding path program 1 times [2018-01-31 08:31:49,508 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:31:49,508 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:31:49,535 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:31:49,536 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:31:49,536 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:31:49,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:31:49,565 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:31:49,617 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-01-31 08:31:49,619 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 08:31:49,619 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-31 08:31:49,620 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-31 08:31:49,627 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-31 08:31:49,627 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-31 08:31:49,628 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 2 states. [2018-01-31 08:31:49,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:31:49,644 INFO L93 Difference]: Finished difference Result 136 states and 153 transitions. [2018-01-31 08:31:49,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-31 08:31:49,645 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 67 [2018-01-31 08:31:49,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:31:49,650 INFO L225 Difference]: With dead ends: 136 [2018-01-31 08:31:49,650 INFO L226 Difference]: Without dead ends: 71 [2018-01-31 08:31:49,652 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-31 08:31:49,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-01-31 08:31:49,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-01-31 08:31:49,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-01-31 08:31:49,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2018-01-31 08:31:49,677 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 67 [2018-01-31 08:31:49,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:31:49,677 INFO L432 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2018-01-31 08:31:49,677 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-31 08:31:49,677 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2018-01-31 08:31:49,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-01-31 08:31:49,679 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:31:49,679 INFO L351 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:31:49,679 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0AssertViolation]=== [2018-01-31 08:31:49,679 INFO L82 PathProgramCache]: Analyzing trace with hash 352061447, now seen corresponding path program 1 times [2018-01-31 08:31:49,679 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:31:49,679 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:31:49,680 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:31:49,680 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:31:49,680 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:31:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:31:49,698 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:31:49,824 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-01-31 08:31:49,825 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 08:31:49,825 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-31 08:31:49,828 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-31 08:31:49,829 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-31 08:31:49,829 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 08:31:49,829 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 3 states. [2018-01-31 08:31:49,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:31:49,914 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2018-01-31 08:31:49,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-31 08:31:49,914 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2018-01-31 08:31:49,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:31:49,915 INFO L225 Difference]: With dead ends: 129 [2018-01-31 08:31:49,915 INFO L226 Difference]: Without dead ends: 78 [2018-01-31 08:31:49,916 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 08:31:49,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-01-31 08:31:49,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2018-01-31 08:31:49,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-01-31 08:31:49,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2018-01-31 08:31:49,920 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 72 [2018-01-31 08:31:49,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:31:49,920 INFO L432 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2018-01-31 08:31:49,920 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-31 08:31:49,921 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2018-01-31 08:31:49,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-01-31 08:31:49,922 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:31:49,922 INFO L351 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:31:49,922 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0AssertViolation]=== [2018-01-31 08:31:49,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1617545872, now seen corresponding path program 1 times [2018-01-31 08:31:49,922 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:31:49,922 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:31:49,923 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:31:49,923 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:31:49,923 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:31:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:31:49,933 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:31:50,012 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-01-31 08:31:50,013 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:31:50,013 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:31:50,028 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:31:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:31:50,075 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:31:50,110 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-01-31 08:31:50,126 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:31:50,127 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-31 08:31:50,127 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 08:31:50,127 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 08:31:50,127 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-31 08:31:50,127 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 6 states. [2018-01-31 08:31:50,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:31:50,428 INFO L93 Difference]: Finished difference Result 144 states and 156 transitions. [2018-01-31 08:31:50,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 08:31:50,428 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2018-01-31 08:31:50,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:31:50,429 INFO L225 Difference]: With dead ends: 144 [2018-01-31 08:31:50,429 INFO L226 Difference]: Without dead ends: 93 [2018-01-31 08:31:50,429 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-31 08:31:50,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-01-31 08:31:50,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2018-01-31 08:31:50,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-01-31 08:31:50,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2018-01-31 08:31:50,434 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 80 [2018-01-31 08:31:50,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:31:50,434 INFO L432 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2018-01-31 08:31:50,434 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 08:31:50,434 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2018-01-31 08:31:50,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-01-31 08:31:50,436 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:31:50,436 INFO L351 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:31:50,436 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0AssertViolation]=== [2018-01-31 08:31:50,437 INFO L82 PathProgramCache]: Analyzing trace with hash -904252446, now seen corresponding path program 1 times [2018-01-31 08:31:50,438 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:31:50,438 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:31:50,438 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:31:50,438 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:31:50,438 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:31:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:31:50,452 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:31:50,550 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-01-31 08:31:50,551 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:31:50,551 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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) [2018-01-31 08:31:50,555 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:31:50,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:31:50,595 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:31:50,629 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-01-31 08:31:50,646 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-31 08:31:50,646 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-31 08:31:50,646 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 08:31:50,646 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 08:31:50,646 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-31 08:31:50,647 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 6 states. [2018-01-31 08:31:50,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:31:50,745 INFO L93 Difference]: Finished difference Result 155 states and 166 transitions. [2018-01-31 08:31:50,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 08:31:50,747 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2018-01-31 08:31:50,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:31:50,748 INFO L225 Difference]: With dead ends: 155 [2018-01-31 08:31:50,748 INFO L226 Difference]: Without dead ends: 103 [2018-01-31 08:31:50,748 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-31 08:31:50,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-01-31 08:31:50,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 93. [2018-01-31 08:31:50,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-01-31 08:31:50,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2018-01-31 08:31:50,753 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 112 [2018-01-31 08:31:50,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:31:50,754 INFO L432 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2018-01-31 08:31:50,754 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 08:31:50,754 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2018-01-31 08:31:50,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-01-31 08:31:50,757 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:31:50,757 INFO L351 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:31:50,757 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0AssertViolation]=== [2018-01-31 08:31:50,757 INFO L82 PathProgramCache]: Analyzing trace with hash -705814942, now seen corresponding path program 1 times [2018-01-31 08:31:50,757 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:31:50,757 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:31:50,758 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:31:50,758 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:31:50,758 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:31:50,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:31:50,787 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:31:50,912 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2018-01-31 08:31:50,912 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:31:50,912 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:31:50,921 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:31:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:31:50,960 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:31:51,208 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2018-01-31 08:31:51,225 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:31:51,225 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2018-01-31 08:31:51,226 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-31 08:31:51,226 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-31 08:31:51,226 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-01-31 08:31:51,226 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 10 states. [2018-01-31 08:31:51,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:31:51,535 INFO L93 Difference]: Finished difference Result 182 states and 191 transitions. [2018-01-31 08:31:51,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-31 08:31:51,538 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 144 [2018-01-31 08:31:51,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:31:51,539 INFO L225 Difference]: With dead ends: 182 [2018-01-31 08:31:51,539 INFO L226 Difference]: Without dead ends: 119 [2018-01-31 08:31:51,539 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-01-31 08:31:51,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-01-31 08:31:51,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 109. [2018-01-31 08:31:51,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-01-31 08:31:51,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2018-01-31 08:31:51,543 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 144 [2018-01-31 08:31:51,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:31:51,543 INFO L432 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2018-01-31 08:31:51,544 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-31 08:31:51,544 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2018-01-31 08:31:51,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-01-31 08:31:51,549 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:31:51,549 INFO L351 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:31:51,549 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0AssertViolation]=== [2018-01-31 08:31:51,550 INFO L82 PathProgramCache]: Analyzing trace with hash 448042562, now seen corresponding path program 2 times [2018-01-31 08:31:51,550 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:31:51,550 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:31:51,550 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:31:51,550 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:31:51,550 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:31:51,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:31:51,574 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:31:51,678 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-01-31 08:31:51,678 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:31:51,678 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:31:51,683 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 08:31:51,693 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:31:51,713 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:31:51,722 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:31:51,724 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:31:52,026 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2018-01-31 08:31:52,042 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:31:52,042 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2018-01-31 08:31:52,043 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-31 08:31:52,043 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-31 08:31:52,043 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2018-01-31 08:31:52,043 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 14 states. [2018-01-31 08:31:52,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:31:52,397 INFO L93 Difference]: Finished difference Result 206 states and 218 transitions. [2018-01-31 08:31:52,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-31 08:31:52,404 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 160 [2018-01-31 08:31:52,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:31:52,405 INFO L225 Difference]: With dead ends: 206 [2018-01-31 08:31:52,405 INFO L226 Difference]: Without dead ends: 135 [2018-01-31 08:31:52,406 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2018-01-31 08:31:52,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-01-31 08:31:52,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 125. [2018-01-31 08:31:52,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-01-31 08:31:52,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2018-01-31 08:31:52,410 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 160 [2018-01-31 08:31:52,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:31:52,411 INFO L432 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2018-01-31 08:31:52,411 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-31 08:31:52,411 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2018-01-31 08:31:52,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-01-31 08:31:52,412 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:31:52,412 INFO L351 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:31:52,412 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0AssertViolation]=== [2018-01-31 08:31:52,412 INFO L82 PathProgramCache]: Analyzing trace with hash 651681972, now seen corresponding path program 3 times [2018-01-31 08:31:52,412 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:31:52,413 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:31:52,413 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:31:52,413 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:31:52,413 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:31:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:31:52,428 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:31:52,560 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2018-01-31 08:31:52,560 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:31:52,560 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:31:52,570 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:31:52,581 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:31:52,585 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:31:52,602 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:31:52,613 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:31:52,614 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:31:52,616 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:31:52,643 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 188 proven. 12 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-01-31 08:31:52,660 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:31:52,660 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-01-31 08:31:52,660 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-31 08:31:52,660 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-31 08:31:52,661 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-31 08:31:52,661 INFO L87 Difference]: Start difference. First operand 125 states and 129 transitions. Second operand 9 states. [2018-01-31 08:31:52,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:31:52,702 INFO L93 Difference]: Finished difference Result 180 states and 185 transitions. [2018-01-31 08:31:52,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-31 08:31:52,702 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 192 [2018-01-31 08:31:52,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:31:52,703 INFO L225 Difference]: With dead ends: 180 [2018-01-31 08:31:52,703 INFO L226 Difference]: Without dead ends: 138 [2018-01-31 08:31:52,703 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2018-01-31 08:31:52,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-01-31 08:31:52,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 133. [2018-01-31 08:31:52,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-01-31 08:31:52,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 137 transitions. [2018-01-31 08:31:52,708 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 137 transitions. Word has length 192 [2018-01-31 08:31:52,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:31:52,709 INFO L432 AbstractCegarLoop]: Abstraction has 133 states and 137 transitions. [2018-01-31 08:31:52,709 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-31 08:31:52,709 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 137 transitions. [2018-01-31 08:31:52,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-01-31 08:31:52,710 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:31:52,711 INFO L351 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:31:52,711 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0AssertViolation]=== [2018-01-31 08:31:52,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1257913045, now seen corresponding path program 4 times [2018-01-31 08:31:52,711 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:31:52,711 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:31:52,711 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:31:52,711 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:31:52,712 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:31:52,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:31:52,725 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:31:52,921 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2018-01-31 08:31:52,922 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:31:52,922 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:31:52,926 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 08:31:52,967 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:31:52,970 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:31:52,992 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2018-01-31 08:31:53,009 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:31:53,009 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2018-01-31 08:31:53,009 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-31 08:31:53,009 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-31 08:31:53,010 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-31 08:31:53,010 INFO L87 Difference]: Start difference. First operand 133 states and 137 transitions. Second operand 13 states. [2018-01-31 08:31:53,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:31:53,078 INFO L93 Difference]: Finished difference Result 233 states and 241 transitions. [2018-01-31 08:31:53,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-31 08:31:53,088 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 200 [2018-01-31 08:31:53,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:31:53,088 INFO L225 Difference]: With dead ends: 233 [2018-01-31 08:31:53,088 INFO L226 Difference]: Without dead ends: 146 [2018-01-31 08:31:53,089 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2018-01-31 08:31:53,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-31 08:31:53,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 141. [2018-01-31 08:31:53,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-01-31 08:31:53,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 145 transitions. [2018-01-31 08:31:53,092 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 145 transitions. Word has length 200 [2018-01-31 08:31:53,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:31:53,092 INFO L432 AbstractCegarLoop]: Abstraction has 141 states and 145 transitions. [2018-01-31 08:31:53,093 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-31 08:31:53,093 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 145 transitions. [2018-01-31 08:31:53,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-01-31 08:31:53,094 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:31:53,094 INFO L351 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 9, 9, 9, 9, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:31:53,094 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr0AssertViolation]=== [2018-01-31 08:31:53,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1725930860, now seen corresponding path program 5 times [2018-01-31 08:31:53,094 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:31:53,094 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:31:53,095 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:31:53,095 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:31:53,095 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:31:53,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:31:53,106 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:31:53,250 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2018-01-31 08:31:53,250 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:31:53,250 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:31:53,255 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 08:31:53,267 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:31:53,272 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:31:53,279 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:31:53,286 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:31:53,287 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:31:53,289 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:31:53,347 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 182 proven. 30 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-01-31 08:31:53,364 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:31:53,364 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2018-01-31 08:31:53,364 INFO L409 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-01-31 08:31:53,365 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-01-31 08:31:53,365 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2018-01-31 08:31:53,365 INFO L87 Difference]: Start difference. First operand 141 states and 145 transitions. Second operand 20 states. [2018-01-31 08:31:53,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:31:53,597 INFO L93 Difference]: Finished difference Result 254 states and 266 transitions. [2018-01-31 08:31:53,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-01-31 08:31:53,600 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 208 [2018-01-31 08:31:53,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:31:53,601 INFO L225 Difference]: With dead ends: 254 [2018-01-31 08:31:53,601 INFO L226 Difference]: Without dead ends: 167 [2018-01-31 08:31:53,602 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=255, Invalid=1005, Unknown=0, NotChecked=0, Total=1260 [2018-01-31 08:31:53,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-01-31 08:31:53,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 157. [2018-01-31 08:31:53,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-01-31 08:31:53,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 161 transitions. [2018-01-31 08:31:53,609 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 161 transitions. Word has length 208 [2018-01-31 08:31:53,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:31:53,610 INFO L432 AbstractCegarLoop]: Abstraction has 157 states and 161 transitions. [2018-01-31 08:31:53,610 INFO L433 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-01-31 08:31:53,610 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 161 transitions. [2018-01-31 08:31:53,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-01-31 08:31:53,613 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:31:53,613 INFO L351 BasicCegarLoop]: trace histogram [15, 12, 12, 12, 12, 12, 12, 12, 7, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:31:53,613 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr0AssertViolation]=== [2018-01-31 08:31:53,613 INFO L82 PathProgramCache]: Analyzing trace with hash 486960902, now seen corresponding path program 6 times [2018-01-31 08:31:53,613 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:31:53,613 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:31:53,614 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:31:53,614 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:31:53,614 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:31:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:31:53,629 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:31:53,866 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2018-01-31 08:31:53,866 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:31:53,866 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:31:53,871 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 08:31:53,883 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:31:53,886 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:31:53,890 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:31:53,894 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:31:53,899 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:31:53,909 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:31:53,922 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:31:53,923 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:31:53,925 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:31:54,002 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 454 proven. 56 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2018-01-31 08:31:54,019 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:31:54,019 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 24 [2018-01-31 08:31:54,020 INFO L409 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-01-31 08:31:54,020 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-01-31 08:31:54,020 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2018-01-31 08:31:54,020 INFO L87 Difference]: Start difference. First operand 157 states and 161 transitions. Second operand 24 states. [2018-01-31 08:31:54,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:31:54,308 INFO L93 Difference]: Finished difference Result 278 states and 290 transitions. [2018-01-31 08:31:54,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-01-31 08:31:54,318 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 240 [2018-01-31 08:31:54,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:31:54,318 INFO L225 Difference]: With dead ends: 278 [2018-01-31 08:31:54,318 INFO L226 Difference]: Without dead ends: 183 [2018-01-31 08:31:54,319 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=365, Invalid=1527, Unknown=0, NotChecked=0, Total=1892 [2018-01-31 08:31:54,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-01-31 08:31:54,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 173. [2018-01-31 08:31:54,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-01-31 08:31:54,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 177 transitions. [2018-01-31 08:31:54,322 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 177 transitions. Word has length 240 [2018-01-31 08:31:54,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:31:54,322 INFO L432 AbstractCegarLoop]: Abstraction has 173 states and 177 transitions. [2018-01-31 08:31:54,323 INFO L433 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-01-31 08:31:54,323 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 177 transitions. [2018-01-31 08:31:54,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-01-31 08:31:54,323 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:31:54,324 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 15, 15, 15, 8, 7, 7, 7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:31:54,324 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr0AssertViolation]=== [2018-01-31 08:31:54,324 INFO L82 PathProgramCache]: Analyzing trace with hash 2007982456, now seen corresponding path program 7 times [2018-01-31 08:31:54,324 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:31:54,324 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:31:54,324 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:31:54,324 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:31:54,324 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:31:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:31:54,341 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:31:54,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-01-31 08:31:54,706 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:31:54,706 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:31:54,710 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:31:54,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:31:54,747 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:31:55,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-01-31 08:31:55,047 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:31:55,047 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2018-01-31 08:31:55,048 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-31 08:31:55,048 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-31 08:31:55,048 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-01-31 08:31:55,048 INFO L87 Difference]: Start difference. First operand 173 states and 177 transitions. Second operand 19 states. [2018-01-31 08:31:55,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:31:55,264 INFO L93 Difference]: Finished difference Result 289 states and 297 transitions. [2018-01-31 08:31:55,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-31 08:31:55,268 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 272 [2018-01-31 08:31:55,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:31:55,269 INFO L225 Difference]: With dead ends: 289 [2018-01-31 08:31:55,269 INFO L226 Difference]: Without dead ends: 186 [2018-01-31 08:31:55,269 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2018-01-31 08:31:55,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-01-31 08:31:55,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 181. [2018-01-31 08:31:55,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-01-31 08:31:55,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 185 transitions. [2018-01-31 08:31:55,273 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 185 transitions. Word has length 272 [2018-01-31 08:31:55,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:31:55,273 INFO L432 AbstractCegarLoop]: Abstraction has 181 states and 185 transitions. [2018-01-31 08:31:55,273 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-31 08:31:55,273 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 185 transitions. [2018-01-31 08:31:55,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-01-31 08:31:55,274 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:31:55,274 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 15, 15, 15, 9, 8, 8, 8, 8, 8, 8, 8, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:31:55,274 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr0AssertViolation]=== [2018-01-31 08:31:55,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1034502687, now seen corresponding path program 8 times [2018-01-31 08:31:55,274 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:31:55,274 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:31:55,275 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:31:55,275 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:31:55,275 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:31:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:31:55,286 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:31:55,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1230 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-01-31 08:31:55,898 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:31:55,898 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:31:55,912 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 08:31:55,924 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:31:55,942 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:31:55,946 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:31:55,948 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:31:56,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1230 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-01-31 08:31:56,027 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:31:56,027 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2018-01-31 08:31:56,027 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-31 08:31:56,028 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-31 08:31:56,028 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-31 08:31:56,028 INFO L87 Difference]: Start difference. First operand 181 states and 185 transitions. Second operand 21 states. [2018-01-31 08:31:56,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:31:56,242 INFO L93 Difference]: Finished difference Result 297 states and 305 transitions. [2018-01-31 08:31:56,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-31 08:31:56,248 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 280 [2018-01-31 08:31:56,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:31:56,249 INFO L225 Difference]: With dead ends: 297 [2018-01-31 08:31:56,249 INFO L226 Difference]: Without dead ends: 194 [2018-01-31 08:31:56,250 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2018-01-31 08:31:56,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-01-31 08:31:56,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 189. [2018-01-31 08:31:56,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-01-31 08:31:56,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 193 transitions. [2018-01-31 08:31:56,253 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 193 transitions. Word has length 280 [2018-01-31 08:31:56,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:31:56,253 INFO L432 AbstractCegarLoop]: Abstraction has 189 states and 193 transitions. [2018-01-31 08:31:56,253 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-31 08:31:56,253 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 193 transitions. [2018-01-31 08:31:56,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-01-31 08:31:56,254 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:31:56,254 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 15, 15, 15, 10, 9, 9, 9, 9, 9, 9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:31:56,254 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr0AssertViolation]=== [2018-01-31 08:31:56,255 INFO L82 PathProgramCache]: Analyzing trace with hash -571236022, now seen corresponding path program 9 times [2018-01-31 08:31:56,255 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:31:56,255 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:31:56,255 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:31:56,255 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:31:56,255 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:31:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:31:56,266 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:31:56,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-01-31 08:31:56,486 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:31:56,486 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:31:56,492 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:31:56,503 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:31:56,507 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:31:56,513 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:31:56,520 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:31:56,543 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:31:56,544 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:31:56,547 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:31:56,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 460 proven. 30 refuted. 0 times theorem prover too weak. 806 trivial. 0 not checked. [2018-01-31 08:31:56,643 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:31:56,643 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 9] total 28 [2018-01-31 08:31:56,644 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-01-31 08:31:56,644 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-01-31 08:31:56,644 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2018-01-31 08:31:56,644 INFO L87 Difference]: Start difference. First operand 189 states and 193 transitions. Second operand 28 states. [2018-01-31 08:31:57,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:31:57,099 INFO L93 Difference]: Finished difference Result 318 states and 327 transitions. [2018-01-31 08:31:57,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-01-31 08:31:57,099 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 288 [2018-01-31 08:31:57,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:31:57,100 INFO L225 Difference]: With dead ends: 318 [2018-01-31 08:31:57,100 INFO L226 Difference]: Without dead ends: 215 [2018-01-31 08:31:57,100 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=575, Invalid=2077, Unknown=0, NotChecked=0, Total=2652 [2018-01-31 08:31:57,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-01-31 08:31:57,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 205. [2018-01-31 08:31:57,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-01-31 08:31:57,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 209 transitions. [2018-01-31 08:31:57,103 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 209 transitions. Word has length 288 [2018-01-31 08:31:57,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:31:57,104 INFO L432 AbstractCegarLoop]: Abstraction has 205 states and 209 transitions. [2018-01-31 08:31:57,104 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-01-31 08:31:57,104 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 209 transitions. [2018-01-31 08:31:57,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-01-31 08:31:57,105 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:31:57,105 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 15, 15, 15, 11, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:31:57,105 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr0AssertViolation]=== [2018-01-31 08:31:57,105 INFO L82 PathProgramCache]: Analyzing trace with hash 2113676586, now seen corresponding path program 10 times [2018-01-31 08:31:57,105 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:31:57,105 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:31:57,106 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:31:57,106 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:31:57,106 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:31:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:31:57,118 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:31:57,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 1016 trivial. 0 not checked. [2018-01-31 08:31:57,796 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:31:57,796 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:31:57,800 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 08:31:57,851 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:31:57,854 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:31:57,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 1016 trivial. 0 not checked. [2018-01-31 08:31:57,911 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:31:57,911 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2018-01-31 08:31:57,912 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-31 08:31:57,912 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-31 08:31:57,912 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2018-01-31 08:31:57,912 INFO L87 Difference]: Start difference. First operand 205 states and 209 transitions. Second operand 25 states. [2018-01-31 08:31:58,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:31:58,167 INFO L93 Difference]: Finished difference Result 329 states and 337 transitions. [2018-01-31 08:31:58,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-01-31 08:31:58,168 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 304 [2018-01-31 08:31:58,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:31:58,168 INFO L225 Difference]: With dead ends: 329 [2018-01-31 08:31:58,168 INFO L226 Difference]: Without dead ends: 218 [2018-01-31 08:31:58,169 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2018-01-31 08:31:58,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-01-31 08:31:58,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 213. [2018-01-31 08:31:58,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-01-31 08:31:58,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 217 transitions. [2018-01-31 08:31:58,172 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 217 transitions. Word has length 304 [2018-01-31 08:31:58,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:31:58,172 INFO L432 AbstractCegarLoop]: Abstraction has 213 states and 217 transitions. [2018-01-31 08:31:58,172 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-31 08:31:58,172 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 217 transitions. [2018-01-31 08:31:58,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-01-31 08:31:58,173 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:31:58,173 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 15, 15, 15, 12, 11, 11, 11, 11, 11, 11, 11, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:31:58,173 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr0AssertViolation]=== [2018-01-31 08:31:58,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1850761837, now seen corresponding path program 11 times [2018-01-31 08:31:58,173 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:31:58,173 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:31:58,174 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:31:58,174 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:31:58,174 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:31:58,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:31:58,185 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:31:58,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1478 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 1016 trivial. 0 not checked. [2018-01-31 08:31:58,838 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:31:58,838 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:31:58,842 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 08:31:58,851 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:31:58,858 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:31:58,859 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:31:58,861 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:31:58,863 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:31:58,866 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:31:58,871 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:31:58,876 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:31:58,886 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:31:58,915 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:31:58,917 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:31:58,919 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:31:59,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1478 backedges. 454 proven. 90 refuted. 0 times theorem prover too weak. 934 trivial. 0 not checked. [2018-01-31 08:31:59,116 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:31:59,116 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 13] total 36 [2018-01-31 08:31:59,117 INFO L409 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-01-31 08:31:59,117 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-01-31 08:31:59,117 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1045, Unknown=0, NotChecked=0, Total=1260 [2018-01-31 08:31:59,117 INFO L87 Difference]: Start difference. First operand 213 states and 217 transitions. Second operand 36 states. [2018-01-31 08:32:00,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:32:00,195 INFO L93 Difference]: Finished difference Result 350 states and 362 transitions. [2018-01-31 08:32:00,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-01-31 08:32:00,201 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 312 [2018-01-31 08:32:00,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:32:00,202 INFO L225 Difference]: With dead ends: 350 [2018-01-31 08:32:00,202 INFO L226 Difference]: Without dead ends: 239 [2018-01-31 08:32:00,203 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=895, Invalid=3661, Unknown=0, NotChecked=0, Total=4556 [2018-01-31 08:32:00,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-01-31 08:32:00,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 229. [2018-01-31 08:32:00,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-01-31 08:32:00,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 233 transitions. [2018-01-31 08:32:00,209 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 233 transitions. Word has length 312 [2018-01-31 08:32:00,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:32:00,209 INFO L432 AbstractCegarLoop]: Abstraction has 229 states and 233 transitions. [2018-01-31 08:32:00,209 INFO L433 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-01-31 08:32:00,209 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 233 transitions. [2018-01-31 08:32:00,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-01-31 08:32:00,211 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:32:00,211 INFO L351 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 18, 18, 18, 13, 12, 12, 12, 12, 12, 12, 12, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:32:00,211 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr0AssertViolation]=== [2018-01-31 08:32:00,211 INFO L82 PathProgramCache]: Analyzing trace with hash 805021189, now seen corresponding path program 12 times [2018-01-31 08:32:00,211 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:32:00,211 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:32:00,212 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:00,212 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:32:00,212 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:32:00,226 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:32:01,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1970 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 1418 trivial. 0 not checked. [2018-01-31 08:32:01,085 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:32:01,085 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:32:01,090 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 08:32:01,102 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:01,115 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:01,124 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:01,135 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:01,145 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:01,165 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:01,194 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:01,216 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:01,241 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:01,267 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:01,311 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:01,312 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:32:01,316 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:32:02,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1970 backedges. 734 proven. 56 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2018-01-31 08:32:02,205 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:32:02,205 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 14] total 39 [2018-01-31 08:32:02,205 INFO L409 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-01-31 08:32:02,205 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-01-31 08:32:02,206 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=1208, Unknown=0, NotChecked=0, Total=1482 [2018-01-31 08:32:02,206 INFO L87 Difference]: Start difference. First operand 229 states and 233 transitions. Second operand 39 states. [2018-01-31 08:32:03,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:32:03,231 INFO L93 Difference]: Finished difference Result 374 states and 383 transitions. [2018-01-31 08:32:03,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-01-31 08:32:03,231 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 344 [2018-01-31 08:32:03,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:32:03,232 INFO L225 Difference]: With dead ends: 374 [2018-01-31 08:32:03,232 INFO L226 Difference]: Without dead ends: 255 [2018-01-31 08:32:03,233 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1199 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1244, Invalid=4918, Unknown=0, NotChecked=0, Total=6162 [2018-01-31 08:32:03,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-01-31 08:32:03,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 245. [2018-01-31 08:32:03,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-01-31 08:32:03,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 249 transitions. [2018-01-31 08:32:03,236 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 249 transitions. Word has length 344 [2018-01-31 08:32:03,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:32:03,237 INFO L432 AbstractCegarLoop]: Abstraction has 245 states and 249 transitions. [2018-01-31 08:32:03,237 INFO L433 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-01-31 08:32:03,237 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 249 transitions. [2018-01-31 08:32:03,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-01-31 08:32:03,238 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:32:03,238 INFO L351 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 18, 18, 18, 14, 13, 13, 13, 13, 13, 13, 13, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:32:03,238 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr0AssertViolation]=== [2018-01-31 08:32:03,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1064452581, now seen corresponding path program 13 times [2018-01-31 08:32:03,238 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:32:03,238 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:32:03,239 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:03,239 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:32:03,239 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:03,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:32:03,250 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:32:03,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2102 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2018-01-31 08:32:03,695 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:32:03,696 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:32:03,702 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:32:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:32:03,741 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:32:03,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2102 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2018-01-31 08:32:03,817 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:32:03,817 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2018-01-31 08:32:03,818 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-31 08:32:03,818 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-31 08:32:03,818 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2018-01-31 08:32:03,818 INFO L87 Difference]: Start difference. First operand 245 states and 249 transitions. Second operand 31 states. [2018-01-31 08:32:04,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:32:04,125 INFO L93 Difference]: Finished difference Result 385 states and 393 transitions. [2018-01-31 08:32:04,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-01-31 08:32:04,138 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 360 [2018-01-31 08:32:04,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:32:04,138 INFO L225 Difference]: With dead ends: 385 [2018-01-31 08:32:04,138 INFO L226 Difference]: Without dead ends: 258 [2018-01-31 08:32:04,139 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2018-01-31 08:32:04,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-01-31 08:32:04,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 253. [2018-01-31 08:32:04,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-01-31 08:32:04,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 257 transitions. [2018-01-31 08:32:04,142 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 257 transitions. Word has length 360 [2018-01-31 08:32:04,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:32:04,142 INFO L432 AbstractCegarLoop]: Abstraction has 253 states and 257 transitions. [2018-01-31 08:32:04,142 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-31 08:32:04,142 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 257 transitions. [2018-01-31 08:32:04,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-01-31 08:32:04,143 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:32:04,144 INFO L351 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 18, 18, 18, 15, 14, 14, 14, 14, 14, 14, 14, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:32:04,144 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr0AssertViolation]=== [2018-01-31 08:32:04,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1813343054, now seen corresponding path program 14 times [2018-01-31 08:32:04,144 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:32:04,144 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:32:04,145 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:04,145 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:32:04,145 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:04,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:32:04,156 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:32:04,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2208 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2018-01-31 08:32:04,588 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:32:04,588 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:32:04,593 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 08:32:04,610 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:04,632 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:04,636 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:32:04,639 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:32:04,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2208 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2018-01-31 08:32:04,717 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:32:04,717 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2018-01-31 08:32:04,717 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-31 08:32:04,718 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-31 08:32:04,718 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2018-01-31 08:32:04,718 INFO L87 Difference]: Start difference. First operand 253 states and 257 transitions. Second operand 33 states. [2018-01-31 08:32:05,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:32:05,055 INFO L93 Difference]: Finished difference Result 393 states and 401 transitions. [2018-01-31 08:32:05,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-01-31 08:32:05,055 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 368 [2018-01-31 08:32:05,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:32:05,056 INFO L225 Difference]: With dead ends: 393 [2018-01-31 08:32:05,056 INFO L226 Difference]: Without dead ends: 266 [2018-01-31 08:32:05,057 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2018-01-31 08:32:05,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2018-01-31 08:32:05,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 261. [2018-01-31 08:32:05,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-01-31 08:32:05,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 265 transitions. [2018-01-31 08:32:05,061 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 265 transitions. Word has length 368 [2018-01-31 08:32:05,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:32:05,061 INFO L432 AbstractCegarLoop]: Abstraction has 261 states and 265 transitions. [2018-01-31 08:32:05,061 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-31 08:32:05,061 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 265 transitions. [2018-01-31 08:32:05,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-01-31 08:32:05,062 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:32:05,062 INFO L351 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 18, 18, 18, 16, 15, 15, 15, 15, 15, 15, 15, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:32:05,062 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr0AssertViolation]=== [2018-01-31 08:32:05,063 INFO L82 PathProgramCache]: Analyzing trace with hash 194059191, now seen corresponding path program 15 times [2018-01-31 08:32:05,063 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:32:05,063 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:32:05,063 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:05,063 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:32:05,063 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:05,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:32:05,075 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:32:05,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2322 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2018-01-31 08:32:05,524 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:32:05,524 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:32:05,538 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:32:05,550 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:32:05,564 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:32:05,573 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:32:05,583 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:32:05,595 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:32:05,612 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:32:05,648 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:32:05,649 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:32:05,652 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:32:05,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2322 backedges. 634 proven. 132 refuted. 0 times theorem prover too weak. 1556 trivial. 0 not checked. [2018-01-31 08:32:05,860 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:32:05,860 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 15] total 46 [2018-01-31 08:32:05,861 INFO L409 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-01-31 08:32:05,861 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-01-31 08:32:05,861 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=1720, Unknown=0, NotChecked=0, Total=2070 [2018-01-31 08:32:05,861 INFO L87 Difference]: Start difference. First operand 261 states and 265 transitions. Second operand 46 states. [2018-01-31 08:32:06,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:32:06,730 INFO L93 Difference]: Finished difference Result 414 states and 426 transitions. [2018-01-31 08:32:06,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-01-31 08:32:06,731 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 376 [2018-01-31 08:32:06,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:32:06,731 INFO L225 Difference]: With dead ends: 414 [2018-01-31 08:32:06,732 INFO L226 Difference]: Without dead ends: 287 [2018-01-31 08:32:06,733 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1478 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1520, Invalid=6136, Unknown=0, NotChecked=0, Total=7656 [2018-01-31 08:32:06,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-01-31 08:32:06,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 277. [2018-01-31 08:32:06,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-01-31 08:32:06,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 281 transitions. [2018-01-31 08:32:06,736 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 281 transitions. Word has length 376 [2018-01-31 08:32:06,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:32:06,736 INFO L432 AbstractCegarLoop]: Abstraction has 277 states and 281 transitions. [2018-01-31 08:32:06,736 INFO L433 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-01-31 08:32:06,736 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 281 transitions. [2018-01-31 08:32:06,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-01-31 08:32:06,738 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:32:06,738 INFO L351 BasicCegarLoop]: trace histogram [24, 21, 21, 21, 21, 21, 21, 21, 17, 16, 16, 16, 16, 16, 16, 16, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:32:06,738 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr0AssertViolation]=== [2018-01-31 08:32:06,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1980621271, now seen corresponding path program 16 times [2018-01-31 08:32:06,738 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:32:06,738 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:32:06,739 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:06,739 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:32:06,739 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:32:06,751 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:32:07,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2918 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 1926 trivial. 0 not checked. [2018-01-31 08:32:07,296 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:32:07,296 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:32:07,301 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 08:32:07,419 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:32:07,422 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:32:07,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2918 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 1926 trivial. 0 not checked. [2018-01-31 08:32:07,591 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:32:07,591 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2018-01-31 08:32:07,591 INFO L409 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-01-31 08:32:07,592 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-01-31 08:32:07,592 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2018-01-31 08:32:07,592 INFO L87 Difference]: Start difference. First operand 277 states and 281 transitions. Second operand 37 states. [2018-01-31 08:32:07,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:32:07,976 INFO L93 Difference]: Finished difference Result 425 states and 433 transitions. [2018-01-31 08:32:07,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-01-31 08:32:07,977 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 408 [2018-01-31 08:32:07,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:32:07,978 INFO L225 Difference]: With dead ends: 425 [2018-01-31 08:32:07,978 INFO L226 Difference]: Without dead ends: 290 [2018-01-31 08:32:07,979 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1483, Invalid=3209, Unknown=0, NotChecked=0, Total=4692 [2018-01-31 08:32:07,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-01-31 08:32:07,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 285. [2018-01-31 08:32:07,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-01-31 08:32:07,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 289 transitions. [2018-01-31 08:32:07,982 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 289 transitions. Word has length 408 [2018-01-31 08:32:07,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:32:07,983 INFO L432 AbstractCegarLoop]: Abstraction has 285 states and 289 transitions. [2018-01-31 08:32:07,983 INFO L433 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-01-31 08:32:07,983 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 289 transitions. [2018-01-31 08:32:07,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2018-01-31 08:32:07,984 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:32:07,984 INFO L351 BasicCegarLoop]: trace histogram [24, 21, 21, 21, 21, 21, 21, 21, 18, 17, 17, 17, 17, 17, 17, 17, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:32:07,984 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr0AssertViolation]=== [2018-01-31 08:32:07,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1649446510, now seen corresponding path program 17 times [2018-01-31 08:32:07,984 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:32:07,984 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:32:07,985 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:07,985 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:32:07,985 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:07,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:32:07,997 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:32:08,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3048 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 1926 trivial. 0 not checked. [2018-01-31 08:32:08,597 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:32:08,597 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:32:08,602 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 08:32:08,612 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:08,621 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:08,631 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:08,638 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:08,648 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:08,655 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:08,657 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:08,660 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:08,666 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:08,672 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:08,680 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:08,690 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:08,709 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:08,796 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:08,858 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:09,196 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:09,198 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:32:09,201 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:32:09,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3048 backedges. 854 proven. 182 refuted. 0 times theorem prover too weak. 2012 trivial. 0 not checked. [2018-01-31 08:32:09,571 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:32:09,571 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 17] total 52 [2018-01-31 08:32:09,571 INFO L409 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-01-31 08:32:09,571 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-01-31 08:32:09,572 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=2213, Unknown=0, NotChecked=0, Total=2652 [2018-01-31 08:32:09,572 INFO L87 Difference]: Start difference. First operand 285 states and 289 transitions. Second operand 52 states. [2018-01-31 08:32:10,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:32:10,333 INFO L93 Difference]: Finished difference Result 446 states and 458 transitions. [2018-01-31 08:32:10,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-01-31 08:32:10,333 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 416 [2018-01-31 08:32:10,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:32:10,334 INFO L225 Difference]: With dead ends: 446 [2018-01-31 08:32:10,334 INFO L226 Difference]: Without dead ends: 311 [2018-01-31 08:32:10,336 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1937 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1935, Invalid=7965, Unknown=0, NotChecked=0, Total=9900 [2018-01-31 08:32:10,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-01-31 08:32:10,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 301. [2018-01-31 08:32:10,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-01-31 08:32:10,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 305 transitions. [2018-01-31 08:32:10,339 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 305 transitions. Word has length 416 [2018-01-31 08:32:10,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:32:10,339 INFO L432 AbstractCegarLoop]: Abstraction has 301 states and 305 transitions. [2018-01-31 08:32:10,339 INFO L433 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-01-31 08:32:10,339 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 305 transitions. [2018-01-31 08:32:10,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2018-01-31 08:32:10,341 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:32:10,341 INFO L351 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 24, 24, 24, 24, 19, 18, 18, 18, 18, 18, 18, 18, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:32:10,341 INFO L371 AbstractCegarLoop]: === Iteration 22 === [mainErr0AssertViolation]=== [2018-01-31 08:32:10,341 INFO L82 PathProgramCache]: Analyzing trace with hash 279541252, now seen corresponding path program 18 times [2018-01-31 08:32:10,341 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:32:10,341 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:32:10,342 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:10,342 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:32:10,342 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:32:10,356 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:32:11,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3732 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 2472 trivial. 0 not checked. [2018-01-31 08:32:11,086 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:32:11,086 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:32:11,091 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 08:32:11,104 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:11,106 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:11,109 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:11,112 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:11,117 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:11,124 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:11,141 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:11,214 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:11,233 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:11,272 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:11,477 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:11,739 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:11,871 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:11,873 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:32:11,877 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:32:12,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3732 backedges. 1108 proven. 90 refuted. 0 times theorem prover too weak. 2534 trivial. 0 not checked. [2018-01-31 08:32:12,123 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:32:12,123 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 13] total 50 [2018-01-31 08:32:12,123 INFO L409 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-01-31 08:32:12,124 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-01-31 08:32:12,124 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=446, Invalid=2004, Unknown=0, NotChecked=0, Total=2450 [2018-01-31 08:32:12,124 INFO L87 Difference]: Start difference. First operand 301 states and 305 transitions. Second operand 50 states. [2018-01-31 08:32:12,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:32:12,922 INFO L93 Difference]: Finished difference Result 470 states and 479 transitions. [2018-01-31 08:32:12,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-01-31 08:32:12,925 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 448 [2018-01-31 08:32:12,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:32:12,926 INFO L225 Difference]: With dead ends: 470 [2018-01-31 08:32:12,926 INFO L226 Difference]: Without dead ends: 327 [2018-01-31 08:32:12,927 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1746 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1980, Invalid=7140, Unknown=0, NotChecked=0, Total=9120 [2018-01-31 08:32:12,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-01-31 08:32:12,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 317. [2018-01-31 08:32:12,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-01-31 08:32:12,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 321 transitions. [2018-01-31 08:32:12,945 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 321 transitions. Word has length 448 [2018-01-31 08:32:12,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:32:12,945 INFO L432 AbstractCegarLoop]: Abstraction has 317 states and 321 transitions. [2018-01-31 08:32:12,945 INFO L433 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-01-31 08:32:12,945 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 321 transitions. [2018-01-31 08:32:12,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2018-01-31 08:32:12,946 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:32:12,947 INFO L351 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 24, 24, 24, 24, 20, 19, 19, 19, 19, 19, 19, 19, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:32:12,947 INFO L371 AbstractCegarLoop]: === Iteration 23 === [mainErr0AssertViolation]=== [2018-01-31 08:32:12,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1853480476, now seen corresponding path program 19 times [2018-01-31 08:32:12,947 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:32:12,947 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:32:12,947 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:12,947 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:32:12,947 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:32:12,980 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:32:13,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3920 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 2514 trivial. 0 not checked. [2018-01-31 08:32:13,794 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:32:13,794 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:32:13,798 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:32:13,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:32:13,853 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:32:14,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3920 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 2514 trivial. 0 not checked. [2018-01-31 08:32:14,339 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:32:14,339 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2018-01-31 08:32:14,339 INFO L409 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-01-31 08:32:14,339 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-01-31 08:32:14,339 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2018-01-31 08:32:14,340 INFO L87 Difference]: Start difference. First operand 317 states and 321 transitions. Second operand 43 states. [2018-01-31 08:32:15,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:32:15,056 INFO L93 Difference]: Finished difference Result 481 states and 489 transitions. [2018-01-31 08:32:15,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-01-31 08:32:15,056 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 464 [2018-01-31 08:32:15,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:32:15,057 INFO L225 Difference]: With dead ends: 481 [2018-01-31 08:32:15,057 INFO L226 Difference]: Without dead ends: 330 [2018-01-31 08:32:15,058 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 463 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2044, Invalid=4436, Unknown=0, NotChecked=0, Total=6480 [2018-01-31 08:32:15,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2018-01-31 08:32:15,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 325. [2018-01-31 08:32:15,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-01-31 08:32:15,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 329 transitions. [2018-01-31 08:32:15,061 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 329 transitions. Word has length 464 [2018-01-31 08:32:15,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:32:15,061 INFO L432 AbstractCegarLoop]: Abstraction has 325 states and 329 transitions. [2018-01-31 08:32:15,061 INFO L433 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-01-31 08:32:15,062 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 329 transitions. [2018-01-31 08:32:15,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2018-01-31 08:32:15,063 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:32:15,063 INFO L351 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 24, 24, 24, 24, 21, 20, 20, 20, 20, 20, 20, 20, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:32:15,063 INFO L371 AbstractCegarLoop]: === Iteration 24 === [mainErr0AssertViolation]=== [2018-01-31 08:32:15,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1293539763, now seen corresponding path program 20 times [2018-01-31 08:32:15,063 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:32:15,063 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:32:15,064 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:15,064 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:32:15,064 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:15,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:32:15,077 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:32:16,024 INFO L134 CoverageAnalysis]: Checked inductivity of 4074 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 2514 trivial. 0 not checked. [2018-01-31 08:32:16,024 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:32:16,024 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:32:16,030 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 08:32:16,043 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:16,071 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:16,076 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:32:16,079 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:32:16,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4074 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 2514 trivial. 0 not checked. [2018-01-31 08:32:16,374 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:32:16,374 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2018-01-31 08:32:16,374 INFO L409 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-01-31 08:32:16,375 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-01-31 08:32:16,375 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2018-01-31 08:32:16,375 INFO L87 Difference]: Start difference. First operand 325 states and 329 transitions. Second operand 45 states. [2018-01-31 08:32:16,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:32:16,928 INFO L93 Difference]: Finished difference Result 489 states and 497 transitions. [2018-01-31 08:32:16,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-01-31 08:32:16,928 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 472 [2018-01-31 08:32:16,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:32:16,929 INFO L225 Difference]: With dead ends: 489 [2018-01-31 08:32:16,929 INFO L226 Difference]: Without dead ends: 338 [2018-01-31 08:32:16,930 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2251, Invalid=4889, Unknown=0, NotChecked=0, Total=7140 [2018-01-31 08:32:16,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-01-31 08:32:16,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 333. [2018-01-31 08:32:16,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2018-01-31 08:32:16,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 337 transitions. [2018-01-31 08:32:16,933 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 337 transitions. Word has length 472 [2018-01-31 08:32:16,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:32:16,934 INFO L432 AbstractCegarLoop]: Abstraction has 333 states and 337 transitions. [2018-01-31 08:32:16,934 INFO L433 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-01-31 08:32:16,934 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 337 transitions. [2018-01-31 08:32:16,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2018-01-31 08:32:16,935 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:32:16,935 INFO L351 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 24, 24, 24, 24, 22, 21, 21, 21, 21, 21, 21, 21, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:32:16,935 INFO L371 AbstractCegarLoop]: === Iteration 25 === [mainErr0AssertViolation]=== [2018-01-31 08:32:16,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1444131254, now seen corresponding path program 21 times [2018-01-31 08:32:16,936 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:32:16,936 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:32:16,936 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:16,936 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:32:16,936 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:16,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:32:16,949 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:32:17,931 INFO L134 CoverageAnalysis]: Checked inductivity of 4236 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 2514 trivial. 0 not checked. [2018-01-31 08:32:17,932 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:32:17,932 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:32:17,937 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:32:17,950 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:32:17,954 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:32:17,959 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:32:17,971 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:32:17,982 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:32:17,998 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:32:18,032 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:32:18,156 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:32:18,158 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:32:18,161 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:32:18,563 INFO L134 CoverageAnalysis]: Checked inductivity of 4236 backedges. 1108 proven. 132 refuted. 0 times theorem prover too weak. 2996 trivial. 0 not checked. [2018-01-31 08:32:18,581 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:32:18,581 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 15] total 58 [2018-01-31 08:32:18,581 INFO L409 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-01-31 08:32:18,581 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-01-31 08:32:18,582 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=590, Invalid=2716, Unknown=0, NotChecked=0, Total=3306 [2018-01-31 08:32:18,582 INFO L87 Difference]: Start difference. First operand 333 states and 337 transitions. Second operand 58 states. [2018-01-31 08:32:19,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:32:19,535 INFO L93 Difference]: Finished difference Result 510 states and 519 transitions. [2018-01-31 08:32:19,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-01-31 08:32:19,535 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 480 [2018-01-31 08:32:19,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:32:19,536 INFO L225 Difference]: With dead ends: 510 [2018-01-31 08:32:19,536 INFO L226 Difference]: Without dead ends: 359 [2018-01-31 08:32:19,537 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2414 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2660, Invalid=9772, Unknown=0, NotChecked=0, Total=12432 [2018-01-31 08:32:19,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-01-31 08:32:19,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 349. [2018-01-31 08:32:19,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-01-31 08:32:19,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 353 transitions. [2018-01-31 08:32:19,541 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 353 transitions. Word has length 480 [2018-01-31 08:32:19,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:32:19,541 INFO L432 AbstractCegarLoop]: Abstraction has 349 states and 353 transitions. [2018-01-31 08:32:19,541 INFO L433 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-01-31 08:32:19,541 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 353 transitions. [2018-01-31 08:32:19,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2018-01-31 08:32:19,543 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:32:19,543 INFO L351 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 24, 24, 24, 24, 23, 22, 22, 22, 22, 22, 22, 22, 8, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:32:19,543 INFO L371 AbstractCegarLoop]: === Iteration 26 === [mainErr0AssertViolation]=== [2018-01-31 08:32:19,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1919068054, now seen corresponding path program 22 times [2018-01-31 08:32:19,543 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:32:19,544 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:32:19,544 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:19,544 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:32:19,544 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:19,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:32:19,558 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:32:20,511 INFO L134 CoverageAnalysis]: Checked inductivity of 4456 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 2564 trivial. 0 not checked. [2018-01-31 08:32:20,511 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:32:20,511 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:32:20,518 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 08:32:20,844 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:32:20,849 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:32:20,973 INFO L134 CoverageAnalysis]: Checked inductivity of 4456 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 2564 trivial. 0 not checked. [2018-01-31 08:32:20,992 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:32:20,992 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 49 [2018-01-31 08:32:20,992 INFO L409 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-01-31 08:32:20,992 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-01-31 08:32:20,992 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2018-01-31 08:32:20,993 INFO L87 Difference]: Start difference. First operand 349 states and 353 transitions. Second operand 49 states. [2018-01-31 08:32:21,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:32:21,646 INFO L93 Difference]: Finished difference Result 521 states and 529 transitions. [2018-01-31 08:32:21,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-01-31 08:32:21,647 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 496 [2018-01-31 08:32:21,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:32:21,648 INFO L225 Difference]: With dead ends: 521 [2018-01-31 08:32:21,648 INFO L226 Difference]: Without dead ends: 362 [2018-01-31 08:32:21,649 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 495 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1616 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2695, Invalid=5861, Unknown=0, NotChecked=0, Total=8556 [2018-01-31 08:32:21,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2018-01-31 08:32:21,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 357. [2018-01-31 08:32:21,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-01-31 08:32:21,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 361 transitions. [2018-01-31 08:32:21,653 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 361 transitions. Word has length 496 [2018-01-31 08:32:21,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:32:21,653 INFO L432 AbstractCegarLoop]: Abstraction has 357 states and 361 transitions. [2018-01-31 08:32:21,653 INFO L433 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-01-31 08:32:21,653 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 361 transitions. [2018-01-31 08:32:21,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2018-01-31 08:32:21,655 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:32:21,655 INFO L351 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 23, 8, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:32:21,655 INFO L371 AbstractCegarLoop]: === Iteration 27 === [mainErr0AssertViolation]=== [2018-01-31 08:32:21,656 INFO L82 PathProgramCache]: Analyzing trace with hash 271501311, now seen corresponding path program 23 times [2018-01-31 08:32:21,656 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:32:21,656 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:32:21,656 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:21,656 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:32:21,656 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:32:21,670 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:32:22,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4634 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 2564 trivial. 0 not checked. [2018-01-31 08:32:22,675 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:32:22,675 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:32:22,692 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 08:32:22,704 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:22,713 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:22,722 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:22,735 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:22,742 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:22,744 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:22,746 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:22,749 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:22,753 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:22,757 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:22,764 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:22,769 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:22,778 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:22,783 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:22,795 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:22,805 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:22,834 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:22,983 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:23,153 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:23,321 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:23,736 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:25,727 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:25,730 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:32:25,736 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:32:26,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4634 backedges. 1102 proven. 240 refuted. 0 times theorem prover too weak. 3292 trivial. 0 not checked. [2018-01-31 08:32:26,092 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:32:26,092 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 19] total 66 [2018-01-31 08:32:26,092 INFO L409 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-01-31 08:32:26,093 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-01-31 08:32:26,093 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=722, Invalid=3568, Unknown=0, NotChecked=0, Total=4290 [2018-01-31 08:32:26,093 INFO L87 Difference]: Start difference. First operand 357 states and 361 transitions. Second operand 66 states. [2018-01-31 08:32:27,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:32:27,229 INFO L93 Difference]: Finished difference Result 542 states and 554 transitions. [2018-01-31 08:32:27,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-01-31 08:32:27,229 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 504 [2018-01-31 08:32:27,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:32:27,230 INFO L225 Difference]: With dead ends: 542 [2018-01-31 08:32:27,230 INFO L226 Difference]: Without dead ends: 383 [2018-01-31 08:32:27,232 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3218 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3280, Invalid=12976, Unknown=0, NotChecked=0, Total=16256 [2018-01-31 08:32:27,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-01-31 08:32:27,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 373. [2018-01-31 08:32:27,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2018-01-31 08:32:27,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 377 transitions. [2018-01-31 08:32:27,236 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 377 transitions. Word has length 504 [2018-01-31 08:32:27,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:32:27,236 INFO L432 AbstractCegarLoop]: Abstraction has 373 states and 377 transitions. [2018-01-31 08:32:27,236 INFO L433 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-01-31 08:32:27,236 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 377 transitions. [2018-01-31 08:32:27,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2018-01-31 08:32:27,239 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:32:27,239 INFO L351 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 27, 27, 27, 27, 25, 24, 24, 24, 24, 24, 24, 24, 8, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:32:27,239 INFO L371 AbstractCegarLoop]: === Iteration 28 === [mainErr0AssertViolation]=== [2018-01-31 08:32:27,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1837350513, now seen corresponding path program 24 times [2018-01-31 08:32:27,239 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:32:27,239 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:32:27,240 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:27,240 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:32:27,240 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:27,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:32:27,254 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:32:28,390 INFO L134 CoverageAnalysis]: Checked inductivity of 5438 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 3182 trivial. 0 not checked. [2018-01-31 08:32:28,390 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:32:28,390 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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) [2018-01-31 08:32:28,407 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:32:28,422 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:28,435 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:28,447 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:28,458 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:28,464 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:28,473 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:28,506 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:28,523 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:28,538 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:28,584 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:28,613 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:28,723 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:28,823 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:29,056 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:29,477 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:30,030 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:30,760 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:30,763 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:32:30,768 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:32:31,054 INFO L134 CoverageAnalysis]: Checked inductivity of 5438 backedges. 1388 proven. 182 refuted. 0 times theorem prover too weak. 3868 trivial. 0 not checked. [2018-01-31 08:32:31,073 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:32:31,073 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 17] total 66 [2018-01-31 08:32:31,074 INFO L409 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-01-31 08:32:31,074 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-01-31 08:32:31,074 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=754, Invalid=3536, Unknown=0, NotChecked=0, Total=4290 [2018-01-31 08:32:31,074 INFO L87 Difference]: Start difference. First operand 373 states and 377 transitions. Second operand 66 states. [2018-01-31 08:32:32,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:32:32,936 INFO L93 Difference]: Finished difference Result 566 states and 575 transitions. [2018-01-31 08:32:32,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-01-31 08:32:32,936 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 536 [2018-01-31 08:32:32,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:32:32,937 INFO L225 Difference]: With dead ends: 566 [2018-01-31 08:32:32,937 INFO L226 Difference]: Without dead ends: 399 [2018-01-31 08:32:32,938 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 522 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3190 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3440, Invalid=12816, Unknown=0, NotChecked=0, Total=16256 [2018-01-31 08:32:32,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-01-31 08:32:32,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 389. [2018-01-31 08:32:32,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2018-01-31 08:32:32,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 393 transitions. [2018-01-31 08:32:32,942 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 393 transitions. Word has length 536 [2018-01-31 08:32:32,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:32:32,942 INFO L432 AbstractCegarLoop]: Abstraction has 389 states and 393 transitions. [2018-01-31 08:32:32,942 INFO L433 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-01-31 08:32:32,942 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 393 transitions. [2018-01-31 08:32:32,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2018-01-31 08:32:32,945 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:32:32,946 INFO L351 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 27, 27, 27, 27, 26, 25, 25, 25, 25, 25, 25, 25, 9, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:32:32,946 INFO L371 AbstractCegarLoop]: === Iteration 29 === [mainErr0AssertViolation]=== [2018-01-31 08:32:32,946 INFO L82 PathProgramCache]: Analyzing trace with hash -951399343, now seen corresponding path program 25 times [2018-01-31 08:32:32,946 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:32:32,946 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:32:32,946 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:32,946 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:32:32,946 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:32:32,963 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:32:34,166 INFO L134 CoverageAnalysis]: Checked inductivity of 5690 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 3240 trivial. 0 not checked. [2018-01-31 08:32:34,166 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:32:34,166 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:32:34,170 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:32:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:32:34,224 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:32:34,338 INFO L134 CoverageAnalysis]: Checked inductivity of 5690 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 3240 trivial. 0 not checked. [2018-01-31 08:32:34,355 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:32:34,355 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 55 [2018-01-31 08:32:34,355 INFO L409 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-01-31 08:32:34,356 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-01-31 08:32:34,356 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=783, Invalid=2187, Unknown=0, NotChecked=0, Total=2970 [2018-01-31 08:32:34,356 INFO L87 Difference]: Start difference. First operand 389 states and 393 transitions. Second operand 55 states. [2018-01-31 08:32:35,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:32:35,129 INFO L93 Difference]: Finished difference Result 577 states and 585 transitions. [2018-01-31 08:32:35,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-01-31 08:32:35,130 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 552 [2018-01-31 08:32:35,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:32:35,131 INFO L225 Difference]: With dead ends: 577 [2018-01-31 08:32:35,131 INFO L226 Difference]: Without dead ends: 402 [2018-01-31 08:32:35,131 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2063 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=3436, Invalid=7484, Unknown=0, NotChecked=0, Total=10920 [2018-01-31 08:32:35,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2018-01-31 08:32:35,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 397. [2018-01-31 08:32:35,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2018-01-31 08:32:35,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 401 transitions. [2018-01-31 08:32:35,136 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 401 transitions. Word has length 552 [2018-01-31 08:32:35,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:32:35,136 INFO L432 AbstractCegarLoop]: Abstraction has 397 states and 401 transitions. [2018-01-31 08:32:35,136 INFO L433 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-01-31 08:32:35,136 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 401 transitions. [2018-01-31 08:32:35,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2018-01-31 08:32:35,138 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:32:35,138 INFO L351 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 27, 27, 27, 27, 27, 26, 26, 26, 26, 26, 26, 26, 9, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:32:35,138 INFO L371 AbstractCegarLoop]: === Iteration 30 === [mainErr0AssertViolation]=== [2018-01-31 08:32:35,139 INFO L82 PathProgramCache]: Analyzing trace with hash 2079235514, now seen corresponding path program 26 times [2018-01-31 08:32:35,139 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:32:35,139 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:32:35,139 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:35,139 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:32:35,139 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:32:35,153 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:32:36,419 INFO L134 CoverageAnalysis]: Checked inductivity of 5892 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 3240 trivial. 0 not checked. [2018-01-31 08:32:36,420 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:32:36,420 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:32:36,425 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 08:32:36,440 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:36,474 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:36,481 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:32:36,484 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:32:36,596 INFO L134 CoverageAnalysis]: Checked inductivity of 5892 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 3240 trivial. 0 not checked. [2018-01-31 08:32:36,613 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:32:36,613 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 57 [2018-01-31 08:32:36,614 INFO L409 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-01-31 08:32:36,614 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-01-31 08:32:36,614 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=840, Invalid=2352, Unknown=0, NotChecked=0, Total=3192 [2018-01-31 08:32:36,614 INFO L87 Difference]: Start difference. First operand 397 states and 401 transitions. Second operand 57 states. [2018-01-31 08:32:37,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:32:37,410 INFO L93 Difference]: Finished difference Result 585 states and 593 transitions. [2018-01-31 08:32:37,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-01-31 08:32:37,411 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 560 [2018-01-31 08:32:37,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:32:37,412 INFO L225 Difference]: With dead ends: 585 [2018-01-31 08:32:37,412 INFO L226 Difference]: Without dead ends: 410 [2018-01-31 08:32:37,413 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 559 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2224 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=3703, Invalid=8069, Unknown=0, NotChecked=0, Total=11772 [2018-01-31 08:32:37,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2018-01-31 08:32:37,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 405. [2018-01-31 08:32:37,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2018-01-31 08:32:37,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 409 transitions. [2018-01-31 08:32:37,416 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 409 transitions. Word has length 560 [2018-01-31 08:32:37,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:32:37,417 INFO L432 AbstractCegarLoop]: Abstraction has 405 states and 409 transitions. [2018-01-31 08:32:37,417 INFO L433 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-01-31 08:32:37,417 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 409 transitions. [2018-01-31 08:32:37,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2018-01-31 08:32:37,419 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:32:37,419 INFO L351 BasicCegarLoop]: trace histogram [30, 28, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 9, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:32:37,419 INFO L371 AbstractCegarLoop]: === Iteration 31 === [mainErr0AssertViolation]=== [2018-01-31 08:32:37,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1941768669, now seen corresponding path program 27 times [2018-01-31 08:32:37,419 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:32:37,419 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:32:37,420 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:37,420 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:32:37,420 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:37,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:32:37,434 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:32:38,759 INFO L134 CoverageAnalysis]: Checked inductivity of 6102 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 3240 trivial. 0 not checked. [2018-01-31 08:32:38,760 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:32:38,760 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:32:38,765 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:32:38,781 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:32:38,785 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:32:38,790 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:32:38,798 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:32:38,806 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:32:38,826 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:32:38,894 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:32:38,946 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:32:38,976 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:32:39,010 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:32:39,012 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:32:39,018 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:32:39,529 INFO L134 CoverageAnalysis]: Checked inductivity of 6102 backedges. 1664 proven. 314 refuted. 0 times theorem prover too weak. 4124 trivial. 0 not checked. [2018-01-31 08:32:39,547 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:32:39,547 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 25] total 80 [2018-01-31 08:32:39,548 INFO L409 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-01-31 08:32:39,548 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-01-31 08:32:39,548 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=5285, Unknown=0, NotChecked=0, Total=6320 [2018-01-31 08:32:39,549 INFO L87 Difference]: Start difference. First operand 405 states and 409 transitions. Second operand 80 states. [2018-01-31 08:32:41,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:32:41,449 INFO L93 Difference]: Finished difference Result 606 states and 615 transitions. [2018-01-31 08:32:41,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-01-31 08:32:41,450 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 568 [2018-01-31 08:32:41,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:32:41,451 INFO L225 Difference]: With dead ends: 606 [2018-01-31 08:32:41,451 INFO L226 Difference]: Without dead ends: 431 [2018-01-31 08:32:41,453 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 708 GetRequests, 546 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5489 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4973, Invalid=21759, Unknown=0, NotChecked=0, Total=26732 [2018-01-31 08:32:41,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2018-01-31 08:32:41,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 421. [2018-01-31 08:32:41,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2018-01-31 08:32:41,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 425 transitions. [2018-01-31 08:32:41,457 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 425 transitions. Word has length 568 [2018-01-31 08:32:41,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:32:41,457 INFO L432 AbstractCegarLoop]: Abstraction has 421 states and 425 transitions. [2018-01-31 08:32:41,457 INFO L433 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-01-31 08:32:41,457 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 425 transitions. [2018-01-31 08:32:41,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2018-01-31 08:32:41,459 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:32:41,459 INFO L351 BasicCegarLoop]: trace histogram [30, 29, 28, 28, 28, 28, 28, 28, 28, 27, 27, 27, 27, 27, 27, 27, 10, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:32:41,459 INFO L371 AbstractCegarLoop]: === Iteration 32 === [mainErr0AssertViolation]=== [2018-01-31 08:32:41,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1941156349, now seen corresponding path program 28 times [2018-01-31 08:32:41,460 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:32:41,460 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:32:41,460 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:41,460 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:32:41,460 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:41,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:32:41,475 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:32:42,887 INFO L134 CoverageAnalysis]: Checked inductivity of 6386 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2018-01-31 08:32:42,887 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:32:42,887 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:32:42,892 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 08:32:43,430 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:32:43,435 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:32:43,554 INFO L134 CoverageAnalysis]: Checked inductivity of 6386 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2018-01-31 08:32:43,573 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:32:43,573 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 61 [2018-01-31 08:32:43,573 INFO L409 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-01-31 08:32:43,573 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-01-31 08:32:43,574 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2018-01-31 08:32:43,574 INFO L87 Difference]: Start difference. First operand 421 states and 425 transitions. Second operand 61 states. [2018-01-31 08:32:44,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:32:44,467 INFO L93 Difference]: Finished difference Result 617 states and 625 transitions. [2018-01-31 08:32:44,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-01-31 08:32:44,468 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 584 [2018-01-31 08:32:44,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:32:44,469 INFO L225 Difference]: With dead ends: 617 [2018-01-31 08:32:44,469 INFO L226 Difference]: Without dead ends: 434 [2018-01-31 08:32:44,470 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 698 GetRequests, 583 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2564 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=4267, Invalid=9305, Unknown=0, NotChecked=0, Total=13572 [2018-01-31 08:32:44,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-01-31 08:32:44,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 429. [2018-01-31 08:32:44,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2018-01-31 08:32:44,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 433 transitions. [2018-01-31 08:32:44,474 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 433 transitions. Word has length 584 [2018-01-31 08:32:44,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:32:44,474 INFO L432 AbstractCegarLoop]: Abstraction has 429 states and 433 transitions. [2018-01-31 08:32:44,474 INFO L433 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-01-31 08:32:44,474 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 433 transitions. [2018-01-31 08:32:44,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2018-01-31 08:32:44,476 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:32:44,476 INFO L351 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 29, 29, 29, 27, 27, 27, 27, 27, 27, 27, 10, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:32:44,476 INFO L371 AbstractCegarLoop]: === Iteration 33 === [mainErr0AssertViolation]=== [2018-01-31 08:32:44,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1293403284, now seen corresponding path program 29 times [2018-01-31 08:32:44,476 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:32:44,476 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:32:44,477 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:44,477 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:32:44,477 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:44,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:32:44,492 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:32:46,080 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2018-01-31 08:32:46,081 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:32:46,081 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:32:46,086 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 08:32:46,101 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:46,102 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:46,103 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:46,104 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:46,106 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:46,108 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:46,110 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:46,112 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:46,115 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:46,118 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:46,121 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:46,128 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:46,134 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:46,150 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:46,159 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:46,167 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:46,189 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:46,210 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:46,234 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:46,246 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:46,288 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:46,972 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:47,172 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:47,275 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:48,256 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:50,374 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:52,909 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:53,680 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:32:53,683 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:32:53,691 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:32:54,124 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 1382 proven. 306 refuted. 0 times theorem prover too weak. 4924 trivial. 0 not checked. [2018-01-31 08:32:54,145 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:32:54,145 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 21] total 80 [2018-01-31 08:32:54,145 INFO L409 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-01-31 08:32:54,146 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-01-31 08:32:54,146 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1079, Invalid=5241, Unknown=0, NotChecked=0, Total=6320 [2018-01-31 08:32:54,146 INFO L87 Difference]: Start difference. First operand 429 states and 433 transitions. Second operand 80 states. [2018-01-31 08:32:55,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:32:55,800 INFO L93 Difference]: Finished difference Result 638 states and 650 transitions. [2018-01-31 08:32:55,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-01-31 08:32:55,801 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 592 [2018-01-31 08:32:55,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:32:55,802 INFO L225 Difference]: With dead ends: 638 [2018-01-31 08:32:55,802 INFO L226 Difference]: Without dead ends: 455 [2018-01-31 08:32:55,804 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 728 GetRequests, 574 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4817 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=4995, Invalid=19185, Unknown=0, NotChecked=0, Total=24180 [2018-01-31 08:32:55,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2018-01-31 08:32:55,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 445. [2018-01-31 08:32:55,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2018-01-31 08:32:55,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 449 transitions. [2018-01-31 08:32:55,807 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 449 transitions. Word has length 592 [2018-01-31 08:32:55,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:32:55,808 INFO L432 AbstractCegarLoop]: Abstraction has 445 states and 449 transitions. [2018-01-31 08:32:55,808 INFO L433 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-01-31 08:32:55,808 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 449 transitions. [2018-01-31 08:32:55,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2018-01-31 08:32:55,810 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:32:55,810 INFO L351 BasicCegarLoop]: trace histogram [33, 31, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 10, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:32:55,810 INFO L371 AbstractCegarLoop]: === Iteration 34 === [mainErr0AssertViolation]=== [2018-01-31 08:32:55,810 INFO L82 PathProgramCache]: Analyzing trace with hash -179428386, now seen corresponding path program 30 times [2018-01-31 08:32:55,810 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:32:55,811 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:32:55,811 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:55,811 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:32:55,811 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:32:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:32:55,827 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:32:57,471 INFO L134 CoverageAnalysis]: Checked inductivity of 7536 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 3996 trivial. 0 not checked. [2018-01-31 08:32:57,471 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:32:57,472 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:32:57,476 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 08:32:57,492 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:57,494 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:57,497 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:57,500 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:57,506 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:57,528 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:57,537 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:57,585 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:57,622 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:57,711 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:57,738 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:57,909 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:58,164 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:58,450 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:58,741 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:58,893 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:58,992 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:59,150 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:59,229 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:59,399 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:59,536 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:32:59,538 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:32:59,545 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:32:59,998 INFO L134 CoverageAnalysis]: Checked inductivity of 7536 backedges. 1700 proven. 306 refuted. 0 times theorem prover too weak. 5530 trivial. 0 not checked. [2018-01-31 08:33:00,018 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:33:00,019 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 21] total 82 [2018-01-31 08:33:00,019 INFO L409 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-01-31 08:33:00,019 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-01-31 08:33:00,020 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1142, Invalid=5500, Unknown=0, NotChecked=0, Total=6642 [2018-01-31 08:33:00,020 INFO L87 Difference]: Start difference. First operand 445 states and 449 transitions. Second operand 82 states. [2018-01-31 08:33:01,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:33:01,958 INFO L93 Difference]: Finished difference Result 662 states and 671 transitions. [2018-01-31 08:33:01,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-01-31 08:33:01,958 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 624 [2018-01-31 08:33:01,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:33:01,960 INFO L225 Difference]: With dead ends: 662 [2018-01-31 08:33:01,960 INFO L226 Difference]: Without dead ends: 471 [2018-01-31 08:33:01,962 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 764 GetRequests, 606 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5066 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=5300, Invalid=20140, Unknown=0, NotChecked=0, Total=25440 [2018-01-31 08:33:01,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2018-01-31 08:33:01,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 461. [2018-01-31 08:33:01,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2018-01-31 08:33:01,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 465 transitions. [2018-01-31 08:33:01,967 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 465 transitions. Word has length 624 [2018-01-31 08:33:01,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:33:01,967 INFO L432 AbstractCegarLoop]: Abstraction has 461 states and 465 transitions. [2018-01-31 08:33:01,967 INFO L433 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-01-31 08:33:01,967 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 465 transitions. [2018-01-31 08:33:01,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2018-01-31 08:33:01,970 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:33:01,970 INFO L351 BasicCegarLoop]: trace histogram [33, 32, 31, 31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 30, 30, 11, 10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:33:01,970 INFO L371 AbstractCegarLoop]: === Iteration 35 === [mainErr0AssertViolation]=== [2018-01-31 08:33:01,970 INFO L82 PathProgramCache]: Analyzing trace with hash -287206466, now seen corresponding path program 31 times [2018-01-31 08:33:01,970 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:33:01,970 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:33:01,971 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:33:01,971 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:33:01,971 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:33:01,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:33:01,989 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:33:03,790 INFO L134 CoverageAnalysis]: Checked inductivity of 7852 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 4070 trivial. 0 not checked. [2018-01-31 08:33:03,790 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:33:03,790 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:33:03,795 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:33:03,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:33:03,864 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:33:04,017 INFO L134 CoverageAnalysis]: Checked inductivity of 7852 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 4070 trivial. 0 not checked. [2018-01-31 08:33:04,033 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:33:04,033 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 67 [2018-01-31 08:33:04,034 INFO L409 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-01-31 08:33:04,034 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-01-31 08:33:04,034 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1155, Invalid=3267, Unknown=0, NotChecked=0, Total=4422 [2018-01-31 08:33:04,034 INFO L87 Difference]: Start difference. First operand 461 states and 465 transitions. Second operand 67 states. [2018-01-31 08:33:05,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:33:05,148 INFO L93 Difference]: Finished difference Result 673 states and 681 transitions. [2018-01-31 08:33:05,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-01-31 08:33:05,152 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 640 [2018-01-31 08:33:05,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:33:05,154 INFO L225 Difference]: With dead ends: 673 [2018-01-31 08:33:05,154 INFO L226 Difference]: Without dead ends: 474 [2018-01-31 08:33:05,155 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 766 GetRequests, 639 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3119 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=5188, Invalid=11324, Unknown=0, NotChecked=0, Total=16512 [2018-01-31 08:33:05,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2018-01-31 08:33:05,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 469. [2018-01-31 08:33:05,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2018-01-31 08:33:05,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 473 transitions. [2018-01-31 08:33:05,159 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 473 transitions. Word has length 640 [2018-01-31 08:33:05,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:33:05,160 INFO L432 AbstractCegarLoop]: Abstraction has 469 states and 473 transitions. [2018-01-31 08:33:05,160 INFO L433 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-01-31 08:33:05,160 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 473 transitions. [2018-01-31 08:33:05,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2018-01-31 08:33:05,162 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:33:05,162 INFO L351 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 32, 32, 32, 30, 30, 30, 30, 30, 30, 30, 11, 10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:33:05,162 INFO L371 AbstractCegarLoop]: === Iteration 36 === [mainErr0AssertViolation]=== [2018-01-31 08:33:05,162 INFO L82 PathProgramCache]: Analyzing trace with hash -24497625, now seen corresponding path program 32 times [2018-01-31 08:33:05,163 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:33:05,163 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:33:05,163 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:33:05,163 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:33:05,163 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:33:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:33:05,180 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:33:07,110 INFO L134 CoverageAnalysis]: Checked inductivity of 8102 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 4070 trivial. 0 not checked. [2018-01-31 08:33:07,111 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:33:07,111 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:33:07,116 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 08:33:07,132 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:07,170 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:07,179 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:33:07,183 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:33:07,340 INFO L134 CoverageAnalysis]: Checked inductivity of 8102 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 4070 trivial. 0 not checked. [2018-01-31 08:33:07,358 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:33:07,359 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 69 [2018-01-31 08:33:07,359 INFO L409 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-01-31 08:33:07,359 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-01-31 08:33:07,359 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1224, Invalid=3468, Unknown=0, NotChecked=0, Total=4692 [2018-01-31 08:33:07,360 INFO L87 Difference]: Start difference. First operand 469 states and 473 transitions. Second operand 69 states. [2018-01-31 08:33:08,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:33:08,523 INFO L93 Difference]: Finished difference Result 681 states and 689 transitions. [2018-01-31 08:33:08,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-01-31 08:33:08,534 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 648 [2018-01-31 08:33:08,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:33:08,536 INFO L225 Difference]: With dead ends: 681 [2018-01-31 08:33:08,536 INFO L226 Difference]: Without dead ends: 482 [2018-01-31 08:33:08,537 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 778 GetRequests, 647 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3316 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=5515, Invalid=12041, Unknown=0, NotChecked=0, Total=17556 [2018-01-31 08:33:08,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2018-01-31 08:33:08,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 477. [2018-01-31 08:33:08,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2018-01-31 08:33:08,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 481 transitions. [2018-01-31 08:33:08,541 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 481 transitions. Word has length 648 [2018-01-31 08:33:08,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:33:08,541 INFO L432 AbstractCegarLoop]: Abstraction has 477 states and 481 transitions. [2018-01-31 08:33:08,541 INFO L433 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-01-31 08:33:08,541 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 481 transitions. [2018-01-31 08:33:08,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2018-01-31 08:33:08,544 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:33:08,544 INFO L351 BasicCegarLoop]: trace histogram [34, 33, 33, 33, 33, 33, 33, 33, 33, 30, 30, 30, 30, 30, 30, 30, 11, 10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:33:08,544 INFO L371 AbstractCegarLoop]: === Iteration 37 === [mainErr0AssertViolation]=== [2018-01-31 08:33:08,544 INFO L82 PathProgramCache]: Analyzing trace with hash -221882480, now seen corresponding path program 33 times [2018-01-31 08:33:08,544 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:33:08,544 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:33:08,545 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:33:08,545 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:33:08,545 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:33:08,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:33:08,560 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:33:10,431 INFO L134 CoverageAnalysis]: Checked inductivity of 8360 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 4070 trivial. 0 not checked. [2018-01-31 08:33:10,432 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:33:10,432 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:33:10,436 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:33:10,452 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:33:10,456 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:33:10,462 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:33:10,471 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:33:10,483 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:33:10,526 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:33:10,594 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:33:10,641 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:33:10,840 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:33:10,997 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:33:11,084 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:33:11,087 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:33:11,092 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:33:11,602 INFO L134 CoverageAnalysis]: Checked inductivity of 8360 backedges. 1690 proven. 380 refuted. 0 times theorem prover too weak. 6290 trivial. 0 not checked. [2018-01-31 08:33:11,620 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:33:11,620 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 23] total 90 [2018-01-31 08:33:11,620 INFO L409 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-01-31 08:33:11,620 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-01-31 08:33:11,621 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1366, Invalid=6644, Unknown=0, NotChecked=0, Total=8010 [2018-01-31 08:33:11,621 INFO L87 Difference]: Start difference. First operand 477 states and 481 transitions. Second operand 90 states. [2018-01-31 08:33:13,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:33:13,671 INFO L93 Difference]: Finished difference Result 702 states and 714 transitions. [2018-01-31 08:33:13,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-01-31 08:33:13,671 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 656 [2018-01-31 08:33:13,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:33:13,673 INFO L225 Difference]: With dead ends: 702 [2018-01-31 08:33:13,673 INFO L226 Difference]: Without dead ends: 503 [2018-01-31 08:33:13,675 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 810 GetRequests, 636 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6166 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=6380, Invalid=24420, Unknown=0, NotChecked=0, Total=30800 [2018-01-31 08:33:13,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2018-01-31 08:33:13,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 493. [2018-01-31 08:33:13,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2018-01-31 08:33:13,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 497 transitions. [2018-01-31 08:33:13,678 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 497 transitions. Word has length 656 [2018-01-31 08:33:13,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:33:13,679 INFO L432 AbstractCegarLoop]: Abstraction has 493 states and 497 transitions. [2018-01-31 08:33:13,679 INFO L433 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-01-31 08:33:13,679 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 497 transitions. [2018-01-31 08:33:13,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2018-01-31 08:33:13,681 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:33:13,681 INFO L351 BasicCegarLoop]: trace histogram [36, 35, 34, 34, 34, 34, 34, 34, 34, 33, 33, 33, 33, 33, 33, 33, 11, 10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:33:13,682 INFO L371 AbstractCegarLoop]: === Iteration 38 === [mainErr0AssertViolation]=== [2018-01-31 08:33:13,682 INFO L82 PathProgramCache]: Analyzing trace with hash -2027079166, now seen corresponding path program 34 times [2018-01-31 08:33:13,682 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:33:13,682 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:33:13,682 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:33:13,682 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:33:13,682 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:33:13,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:33:13,699 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:33:15,830 INFO L134 CoverageAnalysis]: Checked inductivity of 9388 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 4832 trivial. 0 not checked. [2018-01-31 08:33:15,830 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:33:15,830 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:33:15,835 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 08:33:16,776 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:33:16,783 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:33:16,943 INFO L134 CoverageAnalysis]: Checked inductivity of 9388 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 4832 trivial. 0 not checked. [2018-01-31 08:33:16,963 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:33:16,963 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 73 [2018-01-31 08:33:16,963 INFO L409 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-01-31 08:33:16,964 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-01-31 08:33:16,964 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1368, Invalid=3888, Unknown=0, NotChecked=0, Total=5256 [2018-01-31 08:33:16,964 INFO L87 Difference]: Start difference. First operand 493 states and 497 transitions. Second operand 73 states. [2018-01-31 08:33:18,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:33:18,238 INFO L93 Difference]: Finished difference Result 713 states and 721 transitions. [2018-01-31 08:33:18,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-01-31 08:33:18,238 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 688 [2018-01-31 08:33:18,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:33:18,239 INFO L225 Difference]: With dead ends: 713 [2018-01-31 08:33:18,239 INFO L226 Difference]: Without dead ends: 506 [2018-01-31 08:33:18,241 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 826 GetRequests, 687 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3728 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=6199, Invalid=13541, Unknown=0, NotChecked=0, Total=19740 [2018-01-31 08:33:18,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2018-01-31 08:33:18,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 501. [2018-01-31 08:33:18,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2018-01-31 08:33:18,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 505 transitions. [2018-01-31 08:33:18,245 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 505 transitions. Word has length 688 [2018-01-31 08:33:18,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:33:18,245 INFO L432 AbstractCegarLoop]: Abstraction has 501 states and 505 transitions. [2018-01-31 08:33:18,245 INFO L433 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-01-31 08:33:18,245 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 505 transitions. [2018-01-31 08:33:18,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2018-01-31 08:33:18,248 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:33:18,248 INFO L351 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 35, 35, 33, 33, 33, 33, 33, 33, 33, 11, 10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:33:18,248 INFO L371 AbstractCegarLoop]: === Iteration 39 === [mainErr0AssertViolation]=== [2018-01-31 08:33:18,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1666318955, now seen corresponding path program 35 times [2018-01-31 08:33:18,248 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:33:18,248 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:33:18,249 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:33:18,249 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:33:18,249 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:33:18,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:33:18,266 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:33:20,491 INFO L134 CoverageAnalysis]: Checked inductivity of 9662 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 4832 trivial. 0 not checked. [2018-01-31 08:33:20,492 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:33:20,492 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:33:20,497 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 08:33:20,512 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:20,513 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:20,514 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:20,515 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:20,517 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:20,519 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:20,522 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:20,525 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:20,527 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:20,530 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:20,539 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:20,547 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:20,561 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:20,566 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:20,577 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:20,609 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:20,633 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:20,645 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:20,671 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:20,702 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:20,723 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:20,737 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:20,760 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:20,804 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:20,822 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:20,863 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:21,440 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:21,761 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:21,923 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:22,133 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:22,340 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:25,978 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:32,754 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:34,621 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:34,625 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:33:34,635 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:33:35,281 INFO L134 CoverageAnalysis]: Checked inductivity of 9662 backedges. 2038 proven. 462 refuted. 0 times theorem prover too weak. 7162 trivial. 0 not checked. [2018-01-31 08:33:35,303 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:33:35,303 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 25] total 96 [2018-01-31 08:33:35,303 INFO L409 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-01-31 08:33:35,304 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-01-31 08:33:35,304 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1535, Invalid=7585, Unknown=0, NotChecked=0, Total=9120 [2018-01-31 08:33:35,304 INFO L87 Difference]: Start difference. First operand 501 states and 505 transitions. Second operand 96 states. [2018-01-31 08:33:37,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:33:37,817 INFO L93 Difference]: Finished difference Result 734 states and 746 transitions. [2018-01-31 08:33:37,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-01-31 08:33:37,817 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 696 [2018-01-31 08:33:37,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:33:37,818 INFO L225 Difference]: With dead ends: 734 [2018-01-31 08:33:37,818 INFO L226 Difference]: Without dead ends: 527 [2018-01-31 08:33:37,820 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 860 GetRequests, 674 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7073 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=7195, Invalid=27961, Unknown=0, NotChecked=0, Total=35156 [2018-01-31 08:33:37,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2018-01-31 08:33:37,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 517. [2018-01-31 08:33:37,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 517 states. [2018-01-31 08:33:37,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 521 transitions. [2018-01-31 08:33:37,824 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 521 transitions. Word has length 696 [2018-01-31 08:33:37,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:33:37,824 INFO L432 AbstractCegarLoop]: Abstraction has 517 states and 521 transitions. [2018-01-31 08:33:37,824 INFO L433 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-01-31 08:33:37,824 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 521 transitions. [2018-01-31 08:33:37,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2018-01-31 08:33:37,827 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:33:37,827 INFO L351 BasicCegarLoop]: trace histogram [39, 37, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 11, 10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:33:37,827 INFO L371 AbstractCegarLoop]: === Iteration 40 === [mainErr0AssertViolation]=== [2018-01-31 08:33:37,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1039276323, now seen corresponding path program 36 times [2018-01-31 08:33:37,827 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:33:37,827 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:33:37,828 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:33:37,828 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:33:37,828 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:33:37,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:33:37,846 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:33:40,310 INFO L134 CoverageAnalysis]: Checked inductivity of 10778 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 5666 trivial. 0 not checked. [2018-01-31 08:33:40,311 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:33:40,311 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:33:40,315 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 08:33:40,334 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:33:40,336 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:33:40,339 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:33:40,343 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:33:40,348 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:33:40,371 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:33:40,386 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:33:40,506 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:33:40,534 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:33:40,551 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:33:40,562 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:33:40,616 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:33:40,832 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:33:41,107 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:33:41,350 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:33:41,427 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:33:41,598 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:33:41,925 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:33:42,404 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:33:42,840 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:33:43,159 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:33:43,872 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:33:44,939 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 08:33:44,942 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:33:44,951 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:33:45,520 INFO L134 CoverageAnalysis]: Checked inductivity of 10778 backedges. 2420 proven. 380 refuted. 0 times theorem prover too weak. 7978 trivial. 0 not checked. [2018-01-31 08:33:45,540 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:33:45,540 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 23] total 96 [2018-01-31 08:33:45,541 INFO L409 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-01-31 08:33:45,541 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-01-31 08:33:45,541 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1585, Invalid=7535, Unknown=0, NotChecked=0, Total=9120 [2018-01-31 08:33:45,542 INFO L87 Difference]: Start difference. First operand 517 states and 521 transitions. Second operand 96 states. [2018-01-31 08:33:48,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:33:48,059 INFO L93 Difference]: Finished difference Result 758 states and 767 transitions. [2018-01-31 08:33:48,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-01-31 08:33:48,060 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 728 [2018-01-31 08:33:48,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:33:48,061 INFO L225 Difference]: With dead ends: 758 [2018-01-31 08:33:48,061 INFO L226 Difference]: Without dead ends: 543 [2018-01-31 08:33:48,062 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 894 GetRequests, 708 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7027 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=7445, Invalid=27711, Unknown=0, NotChecked=0, Total=35156 [2018-01-31 08:33:48,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2018-01-31 08:33:48,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 533. [2018-01-31 08:33:48,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 533 states. [2018-01-31 08:33:48,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 537 transitions. [2018-01-31 08:33:48,067 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 537 transitions. Word has length 728 [2018-01-31 08:33:48,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:33:48,067 INFO L432 AbstractCegarLoop]: Abstraction has 533 states and 537 transitions. [2018-01-31 08:33:48,067 INFO L433 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-01-31 08:33:48,067 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 537 transitions. [2018-01-31 08:33:48,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2018-01-31 08:33:48,070 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:33:48,071 INFO L351 BasicCegarLoop]: trace histogram [39, 38, 37, 37, 37, 37, 37, 37, 37, 36, 36, 36, 36, 36, 36, 36, 12, 11, 11, 11, 11, 11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:33:48,071 INFO L371 AbstractCegarLoop]: === Iteration 41 === [mainErr0AssertViolation]=== [2018-01-31 08:33:48,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1991022915, now seen corresponding path program 37 times [2018-01-31 08:33:48,071 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:33:48,071 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:33:48,071 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:33:48,071 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:33:48,071 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:33:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:33:48,090 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:33:50,590 INFO L134 CoverageAnalysis]: Checked inductivity of 11150 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 5748 trivial. 0 not checked. [2018-01-31 08:33:50,590 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:33:50,591 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:33:50,595 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:33:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:33:50,663 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:33:50,849 INFO L134 CoverageAnalysis]: Checked inductivity of 11150 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 5748 trivial. 0 not checked. [2018-01-31 08:33:50,868 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:33:50,868 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 79 [2018-01-31 08:33:50,868 INFO L409 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-01-31 08:33:50,869 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-01-31 08:33:50,869 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1599, Invalid=4563, Unknown=0, NotChecked=0, Total=6162 [2018-01-31 08:33:50,869 INFO L87 Difference]: Start difference. First operand 533 states and 537 transitions. Second operand 79 states. [2018-01-31 08:33:53,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:33:53,058 INFO L93 Difference]: Finished difference Result 769 states and 777 transitions. [2018-01-31 08:33:53,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-01-31 08:33:53,058 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 744 [2018-01-31 08:33:53,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:33:53,060 INFO L225 Difference]: With dead ends: 769 [2018-01-31 08:33:53,060 INFO L226 Difference]: Without dead ends: 546 [2018-01-31 08:33:53,061 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 894 GetRequests, 743 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4391 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=7300, Invalid=15956, Unknown=0, NotChecked=0, Total=23256 [2018-01-31 08:33:53,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2018-01-31 08:33:53,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 541. [2018-01-31 08:33:53,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 541 states. [2018-01-31 08:33:53,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 545 transitions. [2018-01-31 08:33:53,065 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 545 transitions. Word has length 744 [2018-01-31 08:33:53,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:33:53,065 INFO L432 AbstractCegarLoop]: Abstraction has 541 states and 545 transitions. [2018-01-31 08:33:53,065 INFO L433 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-01-31 08:33:53,065 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 545 transitions. [2018-01-31 08:33:53,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2018-01-31 08:33:53,068 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:33:53,069 INFO L351 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 38, 38, 38, 36, 36, 36, 36, 36, 36, 36, 12, 11, 11, 11, 11, 11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:33:53,069 INFO L371 AbstractCegarLoop]: === Iteration 42 === [mainErr0AssertViolation]=== [2018-01-31 08:33:53,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1170743258, now seen corresponding path program 38 times [2018-01-31 08:33:53,069 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:33:53,069 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:33:53,069 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:33:53,069 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:33:53,069 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:33:53,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:33:53,088 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:33:55,701 INFO L134 CoverageAnalysis]: Checked inductivity of 11448 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 5748 trivial. 0 not checked. [2018-01-31 08:33:55,701 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:33:55,701 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:33:55,706 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 08:33:55,724 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:55,768 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:33:55,777 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:33:55,781 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:33:55,971 INFO L134 CoverageAnalysis]: Checked inductivity of 11448 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 5748 trivial. 0 not checked. [2018-01-31 08:33:55,988 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:33:55,988 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 81 [2018-01-31 08:33:55,988 INFO L409 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-01-31 08:33:55,988 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-01-31 08:33:55,989 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1680, Invalid=4800, Unknown=0, NotChecked=0, Total=6480 [2018-01-31 08:33:55,989 INFO L87 Difference]: Start difference. First operand 541 states and 545 transitions. Second operand 81 states. [2018-01-31 08:33:57,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:33:57,583 INFO L93 Difference]: Finished difference Result 777 states and 785 transitions. [2018-01-31 08:33:57,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-01-31 08:33:57,583 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 752 [2018-01-31 08:33:57,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:33:57,585 INFO L225 Difference]: With dead ends: 777 [2018-01-31 08:33:57,585 INFO L226 Difference]: Without dead ends: 554 [2018-01-31 08:33:57,586 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 906 GetRequests, 751 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4624 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=7687, Invalid=16805, Unknown=0, NotChecked=0, Total=24492 [2018-01-31 08:33:57,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2018-01-31 08:33:57,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 549. [2018-01-31 08:33:57,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2018-01-31 08:33:57,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 553 transitions. [2018-01-31 08:33:57,590 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 553 transitions. Word has length 752 [2018-01-31 08:33:57,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:33:57,590 INFO L432 AbstractCegarLoop]: Abstraction has 549 states and 553 transitions. [2018-01-31 08:33:57,590 INFO L433 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-01-31 08:33:57,590 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 553 transitions. [2018-01-31 08:33:57,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2018-01-31 08:33:57,593 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:33:57,594 INFO L351 BasicCegarLoop]: trace histogram [40, 39, 39, 39, 39, 39, 39, 39, 39, 36, 36, 36, 36, 36, 36, 36, 12, 11, 11, 11, 11, 11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:33:57,594 INFO L371 AbstractCegarLoop]: === Iteration 43 === [mainErr0AssertViolation]=== [2018-01-31 08:33:57,594 INFO L82 PathProgramCache]: Analyzing trace with hash -274407281, now seen corresponding path program 39 times [2018-01-31 08:33:57,594 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:33:57,594 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:33:57,594 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:33:57,594 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:33:57,595 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:33:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:33:57,613 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:34:00,361 INFO L134 CoverageAnalysis]: Checked inductivity of 11754 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 5748 trivial. 0 not checked. [2018-01-31 08:34:00,361 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:34:00,361 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:34:00,368 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:34:00,385 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:34:00,389 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:34:00,394 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:34:00,404 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:34:00,418 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:34:00,428 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:34:00,483 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:34:00,520 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:34:00,659 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:34:00,739 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:34:00,773 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:34:00,868 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:34:00,916 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:34:00,918 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:34:00,923 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:34:01,611 INFO L134 CoverageAnalysis]: Checked inductivity of 11754 backedges. 2410 proven. 552 refuted. 0 times theorem prover too weak. 8792 trivial. 0 not checked. [2018-01-31 08:34:01,630 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:34:01,630 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 27] total 106 [2018-01-31 08:34:01,630 INFO L409 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-01-31 08:34:01,631 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-01-31 08:34:01,631 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1874, Invalid=9256, Unknown=0, NotChecked=0, Total=11130 [2018-01-31 08:34:01,631 INFO L87 Difference]: Start difference. First operand 549 states and 553 transitions. Second operand 106 states. [2018-01-31 08:34:04,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:34:04,551 INFO L93 Difference]: Finished difference Result 793 states and 805 transitions. [2018-01-31 08:34:04,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-01-31 08:34:04,552 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 760 [2018-01-31 08:34:04,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:34:04,553 INFO L225 Difference]: With dead ends: 793 [2018-01-31 08:34:04,553 INFO L226 Difference]: Without dead ends: 570 [2018-01-31 08:34:04,556 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 942 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8690 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=8840, Invalid=34216, Unknown=0, NotChecked=0, Total=43056 [2018-01-31 08:34:04,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2018-01-31 08:34:04,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 565. [2018-01-31 08:34:04,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 565 states. [2018-01-31 08:34:04,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 569 transitions. [2018-01-31 08:34:04,560 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 569 transitions. Word has length 760 [2018-01-31 08:34:04,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:34:04,560 INFO L432 AbstractCegarLoop]: Abstraction has 565 states and 569 transitions. [2018-01-31 08:34:04,560 INFO L433 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-01-31 08:34:04,560 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 569 transitions. [2018-01-31 08:34:04,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2018-01-31 08:34:04,563 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:34:04,563 INFO L351 BasicCegarLoop]: trace histogram [42, 41, 40, 40, 40, 40, 40, 40, 40, 39, 39, 39, 39, 39, 39, 39, 12, 11, 11, 11, 11, 11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:34:04,563 INFO L371 AbstractCegarLoop]: === Iteration 44 === [mainErr0AssertViolation]=== [2018-01-31 08:34:04,563 INFO L82 PathProgramCache]: Analyzing trace with hash -569786623, now seen corresponding path program 40 times [2018-01-31 08:34:04,564 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:34:04,564 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:34:04,564 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:04,564 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:34:04,564 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:34:04,584 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:34:05,502 INFO L134 CoverageAnalysis]: Checked inductivity of 12974 backedges. 0 proven. 3468 refuted. 0 times theorem prover too weak. 9506 trivial. 0 not checked. [2018-01-31 08:34:05,502 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:34:05,502 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:34:05,507 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 08:34:06,811 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:34:06,819 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:34:06,979 INFO L134 CoverageAnalysis]: Checked inductivity of 12974 backedges. 2822 proven. 650 refuted. 0 times theorem prover too weak. 9502 trivial. 0 not checked. [2018-01-31 08:34:07,000 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:34:07,000 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2018-01-31 08:34:07,001 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-31 08:34:07,001 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-31 08:34:07,001 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2018-01-31 08:34:07,001 INFO L87 Difference]: Start difference. First operand 565 states and 569 transitions. Second operand 31 states. [2018-01-31 08:34:07,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:34:07,271 INFO L93 Difference]: Finished difference Result 808 states and 818 transitions. [2018-01-31 08:34:07,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-01-31 08:34:07,271 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 792 [2018-01-31 08:34:07,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:34:07,272 INFO L225 Difference]: With dead ends: 808 [2018-01-31 08:34:07,272 INFO L226 Difference]: Without dead ends: 578 [2018-01-31 08:34:07,273 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 846 GetRequests, 791 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2018-01-31 08:34:07,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2018-01-31 08:34:07,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 573. [2018-01-31 08:34:07,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 573 states. [2018-01-31 08:34:07,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 577 transitions. [2018-01-31 08:34:07,277 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 577 transitions. Word has length 792 [2018-01-31 08:34:07,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:34:07,277 INFO L432 AbstractCegarLoop]: Abstraction has 573 states and 577 transitions. [2018-01-31 08:34:07,277 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-31 08:34:07,277 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 577 transitions. [2018-01-31 08:34:07,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2018-01-31 08:34:07,280 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:34:07,281 INFO L351 BasicCegarLoop]: trace histogram [45, 42, 42, 42, 42, 42, 42, 42, 41, 40, 40, 40, 40, 40, 40, 40, 12, 11, 11, 11, 11, 11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:34:07,281 INFO L371 AbstractCegarLoop]: === Iteration 45 === [mainErr0AssertViolation]=== [2018-01-31 08:34:07,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1203877110, now seen corresponding path program 41 times [2018-01-31 08:34:07,281 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:34:07,281 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:34:07,281 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:07,281 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:34:07,281 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:34:07,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:34:07,301 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:34:08,307 INFO L134 CoverageAnalysis]: Checked inductivity of 13952 backedges. 0 proven. 4014 refuted. 0 times theorem prover too weak. 9938 trivial. 0 not checked. [2018-01-31 08:34:08,308 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:34:08,308 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-31 08:34:08,312 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 08:34:08,329 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:08,330 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:08,331 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:08,332 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:08,334 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:08,336 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:08,338 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:08,342 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:08,345 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:08,349 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:08,352 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:08,361 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:08,368 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:08,376 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:08,383 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:08,390 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:08,400 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:08,409 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:08,420 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:08,432 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:08,446 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:08,472 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:08,507 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:08,548 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:08,601 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:08,633 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:08,672 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:08,730 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:08,818 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:08,867 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:08,943 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:10,471 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:11,185 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:12,268 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:13,725 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:17,022 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:34:22,438 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown