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/sep60_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-5f7ec6e-m [2018-01-31 09:18:38,739 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-31 09:18:38,740 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-31 09:18:38,749 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-31 09:18:38,749 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-31 09:18:38,750 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-31 09:18:38,750 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-31 09:18:38,751 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-31 09:18:38,752 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-31 09:18:38,752 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-31 09:18:38,753 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-31 09:18:38,753 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-31 09:18:38,754 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-31 09:18:38,754 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-31 09:18:38,755 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-31 09:18:38,756 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-31 09:18:38,757 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-31 09:18:38,758 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-31 09:18:38,758 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-31 09:18:38,759 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-31 09:18:38,760 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-31 09:18:38,763 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-31 09:18:38,763 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-31 09:18:38,763 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 09:18:38,768 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-31 09:18:38,768 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-31 09:18:38,769 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-31 09:18:38,769 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-31 09:18:38,769 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-31 09:18:38,769 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-31 09:18:38,769 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-31 09:18:38,769 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-31 09:18:38,770 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-31 09:18:38,770 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-31 09:18:38,770 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-31 09:18:38,770 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-31 09:18:38,770 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-31 09:18:38,770 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-31 09:18:38,770 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-31 09:18:38,770 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-31 09:18:38,770 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-31 09:18:38,770 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-31 09:18:38,770 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-31 09:18:38,771 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-31 09:18:38,771 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-31 09:18:38,771 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-31 09:18:38,771 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-31 09:18:38,771 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 09:18:38,771 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-31 09:18:38,771 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-31 09:18:38,771 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-31 09:18:38,771 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-31 09:18:38,771 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-31 09:18:38,771 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-31 09:18:38,772 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-31 09:18:38,772 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-31 09:18:38,772 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-31 09:18:38,772 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-31 09:18:38,790 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-31 09:18:38,796 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-31 09:18:38,798 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-31 09:18:38,799 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-31 09:18:38,799 INFO L276 PluginConnector]: CDTParser initialized [2018-01-31 09:18:38,799 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sep60_true-unreach-call.i [2018-01-31 09:18:38,861 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-31 09:18:38,862 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-31 09:18:38,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-31 09:18:38,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-31 09:18:38,866 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-31 09:18:38,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:18:38" (1/1) ... [2018-01-31 09:18:38,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d35538b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:18:38, skipping insertion in model container [2018-01-31 09:18:38,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:18:38" (1/1) ... [2018-01-31 09:18:38,877 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 09:18:38,886 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 09:18:38,958 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 09:18:38,970 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 09:18:38,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:18:38 WrapperNode [2018-01-31 09:18:38,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-31 09:18:38,974 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-31 09:18:38,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-31 09:18:38,975 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-31 09:18:38,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:18:38" (1/1) ... [2018-01-31 09:18:38,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:18:38" (1/1) ... [2018-01-31 09:18:38,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:18:38" (1/1) ... [2018-01-31 09:18:38,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:18:38" (1/1) ... [2018-01-31 09:18:38,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:18:38" (1/1) ... [2018-01-31 09:18:38,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:18:38" (1/1) ... [2018-01-31 09:18:38,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:18:38" (1/1) ... [2018-01-31 09:18:38,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-31 09:18:38,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-31 09:18:38,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-31 09:18:38,994 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-31 09:18:38,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:18:38" (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 09:18:39,033 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-31 09:18:39,033 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-31 09:18:39,033 INFO L136 BoogieDeclarations]: Found implementation of procedure sep [2018-01-31 09:18:39,033 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-31 09:18:39,033 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-31 09:18:39,033 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-31 09:18:39,033 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-31 09:18:39,034 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-31 09:18:39,034 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-31 09:18:39,034 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-31 09:18:39,034 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-31 09:18:39,034 INFO L128 BoogieDeclarations]: Found specification of procedure sep [2018-01-31 09:18:39,034 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-31 09:18:39,034 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-31 09:18:39,034 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-31 09:18:39,430 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-31 09:18:39,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:18:39 BoogieIcfgContainer [2018-01-31 09:18:39,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-31 09:18:39,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-31 09:18:39,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-31 09:18:39,434 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-31 09:18:39,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 09:18:38" (1/3) ... [2018-01-31 09:18:39,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46528b38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:18:39, skipping insertion in model container [2018-01-31 09:18:39,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:18:38" (2/3) ... [2018-01-31 09:18:39,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46528b38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:18:39, skipping insertion in model container [2018-01-31 09:18:39,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:18:39" (3/3) ... [2018-01-31 09:18:39,435 INFO L107 eAbstractionObserver]: Analyzing ICFG sep60_true-unreach-call.i [2018-01-31 09:18:39,440 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-31 09:18:39,444 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-31 09:18:39,468 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-31 09:18:39,469 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-31 09:18:39,469 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-31 09:18:39,469 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-31 09:18:39,469 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-31 09:18:39,469 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-31 09:18:39,469 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-31 09:18:39,469 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-31 09:18:39,470 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-31 09:18:39,479 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states. [2018-01-31 09:18:39,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-01-31 09:18:39,483 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:18:39,484 INFO L351 BasicCegarLoop]: trace histogram [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 09:18:39,484 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0AssertViolation]=== [2018-01-31 09:18:39,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1329501872, now seen corresponding path program 1 times [2018-01-31 09:18:39,488 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:18:39,488 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:18:39,516 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:39,516 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:18:39,516 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:18:39,545 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:18:39,592 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-01-31 09:18:39,594 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:18:39,594 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-31 09:18:39,595 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-31 09:18:39,602 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-31 09:18:39,602 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-31 09:18:39,603 INFO L87 Difference]: Start difference. First operand 83 states. Second operand 2 states. [2018-01-31 09:18:39,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:18:39,621 INFO L93 Difference]: Finished difference Result 146 states and 165 transitions. [2018-01-31 09:18:39,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-31 09:18:39,622 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 61 [2018-01-31 09:18:39,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:18:39,627 INFO L225 Difference]: With dead ends: 146 [2018-01-31 09:18:39,627 INFO L226 Difference]: Without dead ends: 76 [2018-01-31 09:18:39,629 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 09:18:39,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-01-31 09:18:39,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-01-31 09:18:39,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-01-31 09:18:39,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 81 transitions. [2018-01-31 09:18:39,654 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 81 transitions. Word has length 61 [2018-01-31 09:18:39,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:18:39,654 INFO L432 AbstractCegarLoop]: Abstraction has 76 states and 81 transitions. [2018-01-31 09:18:39,654 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-31 09:18:39,654 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 81 transitions. [2018-01-31 09:18:39,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-01-31 09:18:39,656 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:18:39,656 INFO L351 BasicCegarLoop]: trace histogram [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 09:18:39,656 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0AssertViolation]=== [2018-01-31 09:18:39,656 INFO L82 PathProgramCache]: Analyzing trace with hash 695991780, now seen corresponding path program 1 times [2018-01-31 09:18:39,656 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:18:39,656 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:18:39,657 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:39,657 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:18:39,657 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:39,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:18:39,722 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:18:39,811 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-01-31 09:18:39,811 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:18:39,811 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-31 09:18:39,812 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-31 09:18:39,812 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-31 09:18:39,813 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 09:18:39,813 INFO L87 Difference]: Start difference. First operand 76 states and 81 transitions. Second operand 3 states. [2018-01-31 09:18:39,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:18:39,868 INFO L93 Difference]: Finished difference Result 139 states and 149 transitions. [2018-01-31 09:18:39,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-31 09:18:39,868 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2018-01-31 09:18:39,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:18:39,869 INFO L225 Difference]: With dead ends: 139 [2018-01-31 09:18:39,869 INFO L226 Difference]: Without dead ends: 83 [2018-01-31 09:18:39,870 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 09:18:39,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-01-31 09:18:39,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2018-01-31 09:18:39,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-01-31 09:18:39,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2018-01-31 09:18:39,875 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 66 [2018-01-31 09:18:39,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:18:39,875 INFO L432 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2018-01-31 09:18:39,875 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-31 09:18:39,875 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2018-01-31 09:18:39,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-01-31 09:18:39,876 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:18:39,876 INFO L351 BasicCegarLoop]: trace histogram [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 09:18:39,877 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0AssertViolation]=== [2018-01-31 09:18:39,877 INFO L82 PathProgramCache]: Analyzing trace with hash 2128927245, now seen corresponding path program 1 times [2018-01-31 09:18:39,877 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:18:39,877 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:18:39,878 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:39,878 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:18:39,878 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:18:39,887 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:18:39,966 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-01-31 09:18:39,967 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:18:39,967 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 09:18:39,981 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:18:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:18:40,014 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:18:40,076 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-01-31 09:18:40,093 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:18:40,093 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-31 09:18:40,094 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 09:18:40,094 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 09:18:40,094 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-31 09:18:40,094 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand 6 states. [2018-01-31 09:18:40,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:18:40,378 INFO L93 Difference]: Finished difference Result 161 states and 176 transitions. [2018-01-31 09:18:40,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 09:18:40,379 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 74 [2018-01-31 09:18:40,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:18:40,379 INFO L225 Difference]: With dead ends: 161 [2018-01-31 09:18:40,380 INFO L226 Difference]: Without dead ends: 105 [2018-01-31 09:18:40,380 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-31 09:18:40,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-01-31 09:18:40,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 88. [2018-01-31 09:18:40,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-01-31 09:18:40,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2018-01-31 09:18:40,384 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 74 [2018-01-31 09:18:40,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:18:40,384 INFO L432 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2018-01-31 09:18:40,384 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 09:18:40,385 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2018-01-31 09:18:40,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-01-31 09:18:40,386 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:18:40,386 INFO L351 BasicCegarLoop]: trace histogram [6, 3, 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 09:18:40,387 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0AssertViolation]=== [2018-01-31 09:18:40,387 INFO L82 PathProgramCache]: Analyzing trace with hash -365635734, now seen corresponding path program 1 times [2018-01-31 09:18:40,387 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:18:40,387 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:18:40,388 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:40,388 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:18:40,388 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:18:40,400 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:18:40,511 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-01-31 09:18:40,512 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:18:40,512 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) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:18:40,521 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:18:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:18:40,556 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:18:40,578 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-01-31 09:18:40,594 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:18:40,594 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-31 09:18:40,594 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 09:18:40,595 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 09:18:40,595 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-31 09:18:40,595 INFO L87 Difference]: Start difference. First operand 88 states and 93 transitions. Second operand 6 states. [2018-01-31 09:18:40,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:18:40,841 INFO L93 Difference]: Finished difference Result 179 states and 194 transitions. [2018-01-31 09:18:40,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 09:18:40,841 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2018-01-31 09:18:40,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:18:40,842 INFO L225 Difference]: With dead ends: 179 [2018-01-31 09:18:40,842 INFO L226 Difference]: Without dead ends: 122 [2018-01-31 09:18:40,843 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-31 09:18:40,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-01-31 09:18:40,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 105. [2018-01-31 09:18:40,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-01-31 09:18:40,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 111 transitions. [2018-01-31 09:18:40,847 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 111 transitions. Word has length 115 [2018-01-31 09:18:40,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:18:40,847 INFO L432 AbstractCegarLoop]: Abstraction has 105 states and 111 transitions. [2018-01-31 09:18:40,847 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 09:18:40,847 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 111 transitions. [2018-01-31 09:18:40,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-01-31 09:18:40,850 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:18:40,850 INFO L351 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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 09:18:40,850 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0AssertViolation]=== [2018-01-31 09:18:40,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1829682989, now seen corresponding path program 1 times [2018-01-31 09:18:40,850 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:18:40,850 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:18:40,851 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:40,851 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:18:40,851 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:18:40,873 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:18:40,946 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2018-01-31 09:18:40,947 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:18:40,947 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 09:18:40,955 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:18:40,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:18:40,989 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:18:41,224 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2018-01-31 09:18:41,240 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:18:41,240 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2018-01-31 09:18:41,241 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-31 09:18:41,241 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-31 09:18:41,241 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-01-31 09:18:41,241 INFO L87 Difference]: Start difference. First operand 105 states and 111 transitions. Second operand 10 states. [2018-01-31 09:18:41,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:18:41,372 INFO L93 Difference]: Finished difference Result 206 states and 219 transitions. [2018-01-31 09:18:41,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-31 09:18:41,373 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2018-01-31 09:18:41,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:18:41,373 INFO L225 Difference]: With dead ends: 206 [2018-01-31 09:18:41,373 INFO L226 Difference]: Without dead ends: 131 [2018-01-31 09:18:41,374 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 152 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 09:18:41,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-01-31 09:18:41,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 121. [2018-01-31 09:18:41,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-01-31 09:18:41,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 127 transitions. [2018-01-31 09:18:41,378 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 127 transitions. Word has length 156 [2018-01-31 09:18:41,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:18:41,379 INFO L432 AbstractCegarLoop]: Abstraction has 121 states and 127 transitions. [2018-01-31 09:18:41,379 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-31 09:18:41,379 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 127 transitions. [2018-01-31 09:18:41,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-01-31 09:18:41,380 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:18:41,380 INFO L351 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 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 09:18:41,380 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0AssertViolation]=== [2018-01-31 09:18:41,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1061902835, now seen corresponding path program 2 times [2018-01-31 09:18:41,381 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:18:41,381 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:18:41,381 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:41,381 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:18:41,381 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:18:41,398 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:18:41,544 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-01-31 09:18:41,544 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:18:41,544 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 09:18:41,550 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:18:41,562 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:18:41,586 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:18:41,597 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:18:41,600 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:18:41,775 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2018-01-31 09:18:41,791 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:18:41,791 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2018-01-31 09:18:41,792 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-31 09:18:41,792 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-31 09:18:41,792 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2018-01-31 09:18:41,792 INFO L87 Difference]: Start difference. First operand 121 states and 127 transitions. Second operand 14 states. [2018-01-31 09:18:42,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:18:42,023 INFO L93 Difference]: Finished difference Result 244 states and 262 transitions. [2018-01-31 09:18:42,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-31 09:18:42,023 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 172 [2018-01-31 09:18:42,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:18:42,024 INFO L225 Difference]: With dead ends: 244 [2018-01-31 09:18:42,024 INFO L226 Difference]: Without dead ends: 161 [2018-01-31 09:18:42,025 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2018-01-31 09:18:42,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-01-31 09:18:42,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 144. [2018-01-31 09:18:42,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-01-31 09:18:42,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 151 transitions. [2018-01-31 09:18:42,030 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 151 transitions. Word has length 172 [2018-01-31 09:18:42,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:18:42,031 INFO L432 AbstractCegarLoop]: Abstraction has 144 states and 151 transitions. [2018-01-31 09:18:42,031 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-31 09:18:42,031 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 151 transitions. [2018-01-31 09:18:42,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-01-31 09:18:42,033 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:18:42,033 INFO L351 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 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 09:18:42,033 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0AssertViolation]=== [2018-01-31 09:18:42,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1386807338, now seen corresponding path program 3 times [2018-01-31 09:18:42,033 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:18:42,033 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:18:42,034 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:42,034 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:18:42,034 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:18:42,054 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:18:42,224 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2018-01-31 09:18:42,224 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:18:42,224 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 09:18:42,229 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:18:42,239 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:18:42,244 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:18:42,250 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:18:42,264 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:18:42,266 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:18:42,269 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:18:42,301 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 238 proven. 12 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2018-01-31 09:18:42,318 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:18:42,318 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-01-31 09:18:42,318 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-31 09:18:42,318 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-31 09:18:42,318 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-31 09:18:42,319 INFO L87 Difference]: Start difference. First operand 144 states and 151 transitions. Second operand 9 states. [2018-01-31 09:18:42,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:18:42,379 INFO L93 Difference]: Finished difference Result 218 states and 229 transitions. [2018-01-31 09:18:42,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-31 09:18:42,379 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 213 [2018-01-31 09:18:42,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:18:42,380 INFO L225 Difference]: With dead ends: 218 [2018-01-31 09:18:42,380 INFO L226 Difference]: Without dead ends: 157 [2018-01-31 09:18:42,380 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 212 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 09:18:42,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-01-31 09:18:42,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 152. [2018-01-31 09:18:42,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-01-31 09:18:42,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 159 transitions. [2018-01-31 09:18:42,385 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 159 transitions. Word has length 213 [2018-01-31 09:18:42,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:18:42,386 INFO L432 AbstractCegarLoop]: Abstraction has 152 states and 159 transitions. [2018-01-31 09:18:42,386 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-31 09:18:42,386 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 159 transitions. [2018-01-31 09:18:42,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-01-31 09:18:42,388 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:18:42,388 INFO L351 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:18:42,388 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0AssertViolation]=== [2018-01-31 09:18:42,388 INFO L82 PathProgramCache]: Analyzing trace with hash 670583251, now seen corresponding path program 4 times [2018-01-31 09:18:42,388 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:18:42,388 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:18:42,389 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:42,389 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:18:42,389 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:42,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:18:42,403 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:18:42,562 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2018-01-31 09:18:42,562 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:18:42,562 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 09:18:42,567 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 09:18:42,601 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:18:42,604 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:18:42,639 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2018-01-31 09:18:42,658 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:18:42,658 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2018-01-31 09:18:42,658 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-31 09:18:42,658 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-31 09:18:42,658 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-31 09:18:42,658 INFO L87 Difference]: Start difference. First operand 152 states and 159 transitions. Second operand 13 states. [2018-01-31 09:18:42,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:18:42,781 INFO L93 Difference]: Finished difference Result 271 states and 285 transitions. [2018-01-31 09:18:42,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-31 09:18:42,791 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 221 [2018-01-31 09:18:42,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:18:42,791 INFO L225 Difference]: With dead ends: 271 [2018-01-31 09:18:42,791 INFO L226 Difference]: Without dead ends: 165 [2018-01-31 09:18:42,792 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 220 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 09:18:42,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-01-31 09:18:42,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 160. [2018-01-31 09:18:42,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-01-31 09:18:42,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 167 transitions. [2018-01-31 09:18:42,796 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 167 transitions. Word has length 221 [2018-01-31 09:18:42,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:18:42,797 INFO L432 AbstractCegarLoop]: Abstraction has 160 states and 167 transitions. [2018-01-31 09:18:42,797 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-31 09:18:42,797 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 167 transitions. [2018-01-31 09:18:42,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-01-31 09:18:42,798 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:18:42,798 INFO L351 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:18:42,798 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr0AssertViolation]=== [2018-01-31 09:18:42,799 INFO L82 PathProgramCache]: Analyzing trace with hash 71674890, now seen corresponding path program 5 times [2018-01-31 09:18:42,799 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:18:42,799 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:18:42,799 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:42,799 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:18:42,799 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:42,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:18:42,811 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:18:43,157 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2018-01-31 09:18:43,158 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:18:43,158 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 09:18:43,162 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 09:18:43,174 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:18:43,178 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:18:43,199 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:18:43,208 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:18:43,209 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:18:43,211 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:18:43,303 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 232 proven. 39 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2018-01-31 09:18:43,319 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:18:43,320 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2018-01-31 09:18:43,320 INFO L409 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-01-31 09:18:43,320 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-01-31 09:18:43,320 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2018-01-31 09:18:43,321 INFO L87 Difference]: Start difference. First operand 160 states and 167 transitions. Second operand 20 states. [2018-01-31 09:18:43,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:18:43,558 INFO L93 Difference]: Finished difference Result 306 states and 326 transitions. [2018-01-31 09:18:43,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-01-31 09:18:43,559 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 229 [2018-01-31 09:18:43,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:18:43,559 INFO L225 Difference]: With dead ends: 306 [2018-01-31 09:18:43,559 INFO L226 Difference]: Without dead ends: 200 [2018-01-31 09:18:43,560 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=255, Invalid=1005, Unknown=0, NotChecked=0, Total=1260 [2018-01-31 09:18:43,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-01-31 09:18:43,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 183. [2018-01-31 09:18:43,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-01-31 09:18:43,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 191 transitions. [2018-01-31 09:18:43,568 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 191 transitions. Word has length 229 [2018-01-31 09:18:43,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:18:43,568 INFO L432 AbstractCegarLoop]: Abstraction has 183 states and 191 transitions. [2018-01-31 09:18:43,568 INFO L433 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-01-31 09:18:43,568 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 191 transitions. [2018-01-31 09:18:43,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-01-31 09:18:43,569 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:18:43,569 INFO L351 BasicCegarLoop]: trace histogram [15, 12, 12, 12, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:18:43,569 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr0AssertViolation]=== [2018-01-31 09:18:43,569 INFO L82 PathProgramCache]: Analyzing trace with hash 831208191, now seen corresponding path program 6 times [2018-01-31 09:18:43,569 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:18:43,569 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:18:43,570 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:43,570 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:18:43,570 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:43,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:18:43,584 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:18:43,841 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 852 trivial. 0 not checked. [2018-01-31 09:18:43,841 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:18:43,841 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 09:18:43,848 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 09:18:43,859 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:18:43,862 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:18:43,866 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:18:43,870 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:18:43,877 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:18:43,892 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:18:43,902 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:18:43,903 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:18:43,906 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:18:44,307 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 594 proven. 74 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2018-01-31 09:18:44,325 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:18:44,325 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 24 [2018-01-31 09:18:44,325 INFO L409 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-01-31 09:18:44,325 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-01-31 09:18:44,325 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2018-01-31 09:18:44,326 INFO L87 Difference]: Start difference. First operand 183 states and 191 transitions. Second operand 24 states. [2018-01-31 09:18:44,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:18:44,633 INFO L93 Difference]: Finished difference Result 344 states and 366 transitions. [2018-01-31 09:18:44,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-01-31 09:18:44,634 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 270 [2018-01-31 09:18:44,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:18:44,634 INFO L225 Difference]: With dead ends: 344 [2018-01-31 09:18:44,634 INFO L226 Difference]: Without dead ends: 223 [2018-01-31 09:18:44,635 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=365, Invalid=1527, Unknown=0, NotChecked=0, Total=1892 [2018-01-31 09:18:44,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-01-31 09:18:44,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 206. [2018-01-31 09:18:44,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-01-31 09:18:44,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 215 transitions. [2018-01-31 09:18:44,639 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 215 transitions. Word has length 270 [2018-01-31 09:18:44,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:18:44,639 INFO L432 AbstractCegarLoop]: Abstraction has 206 states and 215 transitions. [2018-01-31 09:18:44,639 INFO L433 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-01-31 09:18:44,640 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 215 transitions. [2018-01-31 09:18:44,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-01-31 09:18:44,640 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:18:44,641 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:18:44,641 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr0AssertViolation]=== [2018-01-31 09:18:44,641 INFO L82 PathProgramCache]: Analyzing trace with hash -763014280, now seen corresponding path program 7 times [2018-01-31 09:18:44,641 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:18:44,641 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:18:44,642 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:44,642 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:18:44,642 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:44,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:18:44,656 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:18:44,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1481 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 1299 trivial. 0 not checked. [2018-01-31 09:18:44,913 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:18:44,913 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 09:18:44,918 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:18:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:18:44,960 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:18:45,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1481 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 1299 trivial. 0 not checked. [2018-01-31 09:18:45,063 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:18:45,063 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2018-01-31 09:18:45,064 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-31 09:18:45,064 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-31 09:18:45,064 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-01-31 09:18:45,064 INFO L87 Difference]: Start difference. First operand 206 states and 215 transitions. Second operand 19 states. [2018-01-31 09:18:45,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:18:45,197 INFO L93 Difference]: Finished difference Result 355 states and 373 transitions. [2018-01-31 09:18:45,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-31 09:18:45,207 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 311 [2018-01-31 09:18:45,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:18:45,208 INFO L225 Difference]: With dead ends: 355 [2018-01-31 09:18:45,208 INFO L226 Difference]: Without dead ends: 219 [2018-01-31 09:18:45,209 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2018-01-31 09:18:45,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-01-31 09:18:45,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 214. [2018-01-31 09:18:45,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-01-31 09:18:45,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 223 transitions. [2018-01-31 09:18:45,212 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 223 transitions. Word has length 311 [2018-01-31 09:18:45,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:18:45,212 INFO L432 AbstractCegarLoop]: Abstraction has 214 states and 223 transitions. [2018-01-31 09:18:45,212 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-31 09:18:45,212 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 223 transitions. [2018-01-31 09:18:45,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2018-01-31 09:18:45,213 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:18:45,213 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:18:45,213 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr0AssertViolation]=== [2018-01-31 09:18:45,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1408264465, now seen corresponding path program 8 times [2018-01-31 09:18:45,214 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:18:45,214 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:18:45,214 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:45,214 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:18:45,214 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:18:45,239 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:18:45,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1539 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 1299 trivial. 0 not checked. [2018-01-31 09:18:45,545 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:18:45,545 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 09:18:45,550 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:18:45,562 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:18:45,583 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:18:45,592 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:18:45,595 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:18:45,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1539 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 1299 trivial. 0 not checked. [2018-01-31 09:18:45,678 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:18:45,678 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2018-01-31 09:18:45,679 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-31 09:18:45,679 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-31 09:18:45,679 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-31 09:18:45,679 INFO L87 Difference]: Start difference. First operand 214 states and 223 transitions. Second operand 21 states. [2018-01-31 09:18:45,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:18:45,860 INFO L93 Difference]: Finished difference Result 363 states and 381 transitions. [2018-01-31 09:18:45,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-31 09:18:45,866 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 319 [2018-01-31 09:18:45,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:18:45,867 INFO L225 Difference]: With dead ends: 363 [2018-01-31 09:18:45,867 INFO L226 Difference]: Without dead ends: 227 [2018-01-31 09:18:45,868 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2018-01-31 09:18:45,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-01-31 09:18:45,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 222. [2018-01-31 09:18:45,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-01-31 09:18:45,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 231 transitions. [2018-01-31 09:18:45,875 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 231 transitions. Word has length 319 [2018-01-31 09:18:45,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:18:45,876 INFO L432 AbstractCegarLoop]: Abstraction has 222 states and 231 transitions. [2018-01-31 09:18:45,876 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-31 09:18:45,876 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 231 transitions. [2018-01-31 09:18:45,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-01-31 09:18:45,877 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:18:45,877 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:18:45,877 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr0AssertViolation]=== [2018-01-31 09:18:45,877 INFO L82 PathProgramCache]: Analyzing trace with hash 813069158, now seen corresponding path program 9 times [2018-01-31 09:18:45,877 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:18:45,877 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:18:45,878 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:45,878 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:18:45,878 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:45,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:18:45,892 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:18:46,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1605 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 1299 trivial. 0 not checked. [2018-01-31 09:18:46,613 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:18:46,613 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 09:18:46,619 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:18:46,631 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:18:46,634 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:18:46,640 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:18:46,651 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:18:46,671 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:18:46,672 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:18:46,675 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:18:46,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1605 backedges. 606 proven. 30 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2018-01-31 09:18:46,793 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:18:46,794 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 9] total 28 [2018-01-31 09:18:46,794 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-01-31 09:18:46,794 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-01-31 09:18:46,794 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2018-01-31 09:18:46,794 INFO L87 Difference]: Start difference. First operand 222 states and 231 transitions. Second operand 28 states. [2018-01-31 09:18:47,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:18:47,341 INFO L93 Difference]: Finished difference Result 384 states and 403 transitions. [2018-01-31 09:18:47,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-01-31 09:18:47,341 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 327 [2018-01-31 09:18:47,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:18:47,342 INFO L225 Difference]: With dead ends: 384 [2018-01-31 09:18:47,342 INFO L226 Difference]: Without dead ends: 248 [2018-01-31 09:18:47,343 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=575, Invalid=2077, Unknown=0, NotChecked=0, Total=2652 [2018-01-31 09:18:47,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-01-31 09:18:47,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 238. [2018-01-31 09:18:47,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2018-01-31 09:18:47,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 247 transitions. [2018-01-31 09:18:47,348 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 247 transitions. Word has length 327 [2018-01-31 09:18:47,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:18:47,348 INFO L432 AbstractCegarLoop]: Abstraction has 238 states and 247 transitions. [2018-01-31 09:18:47,348 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-01-31 09:18:47,349 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 247 transitions. [2018-01-31 09:18:47,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-01-31 09:18:47,350 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:18:47,350 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:18:47,350 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr0AssertViolation]=== [2018-01-31 09:18:47,350 INFO L82 PathProgramCache]: Analyzing trace with hash -51578170, now seen corresponding path program 10 times [2018-01-31 09:18:47,350 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:18:47,350 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:18:47,351 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:47,351 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:18:47,351 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:18:47,372 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:18:47,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 1325 trivial. 0 not checked. [2018-01-31 09:18:47,877 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:18:47,877 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 09:18:47,886 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 09:18:47,955 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:18:47,959 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:18:48,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 1325 trivial. 0 not checked. [2018-01-31 09:18:48,028 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:18:48,028 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2018-01-31 09:18:48,029 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-31 09:18:48,029 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-31 09:18:48,029 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2018-01-31 09:18:48,029 INFO L87 Difference]: Start difference. First operand 238 states and 247 transitions. Second operand 25 states. [2018-01-31 09:18:48,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:18:48,967 INFO L93 Difference]: Finished difference Result 395 states and 413 transitions. [2018-01-31 09:18:48,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-01-31 09:18:48,974 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 343 [2018-01-31 09:18:48,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:18:48,975 INFO L225 Difference]: With dead ends: 395 [2018-01-31 09:18:48,975 INFO L226 Difference]: Without dead ends: 251 [2018-01-31 09:18:48,976 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2018-01-31 09:18:48,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-01-31 09:18:48,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 246. [2018-01-31 09:18:48,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2018-01-31 09:18:48,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 255 transitions. [2018-01-31 09:18:48,979 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 255 transitions. Word has length 343 [2018-01-31 09:18:48,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:18:48,979 INFO L432 AbstractCegarLoop]: Abstraction has 246 states and 255 transitions. [2018-01-31 09:18:48,979 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-31 09:18:48,979 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 255 transitions. [2018-01-31 09:18:48,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2018-01-31 09:18:48,980 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:18:48,980 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:18:48,980 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr0AssertViolation]=== [2018-01-31 09:18:48,981 INFO L82 PathProgramCache]: Analyzing trace with hash 603169341, now seen corresponding path program 11 times [2018-01-31 09:18:48,981 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:18:48,981 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:18:48,981 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:48,981 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:18:48,981 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:18:48,995 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:18:49,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1787 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 1325 trivial. 0 not checked. [2018-01-31 09:18:49,711 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:18:49,711 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 09:18:49,716 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 09:18:49,725 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:18:49,727 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:18:49,729 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:18:49,730 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:18:49,733 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:18:49,736 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:18:49,742 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:18:49,758 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:18:49,774 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:18:49,841 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:18:49,842 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:18:49,846 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:18:50,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1787 backedges. 600 proven. 120 refuted. 0 times theorem prover too weak. 1067 trivial. 0 not checked. [2018-01-31 09:18:50,616 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:18:50,616 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 13] total 36 [2018-01-31 09:18:50,616 INFO L409 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-01-31 09:18:50,617 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-01-31 09:18:50,617 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1045, Unknown=0, NotChecked=0, Total=1260 [2018-01-31 09:18:50,617 INFO L87 Difference]: Start difference. First operand 246 states and 255 transitions. Second operand 36 states. [2018-01-31 09:18:51,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:18:51,567 INFO L93 Difference]: Finished difference Result 430 states and 454 transitions. [2018-01-31 09:18:51,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-01-31 09:18:51,568 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 351 [2018-01-31 09:18:51,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:18:51,568 INFO L225 Difference]: With dead ends: 430 [2018-01-31 09:18:51,568 INFO L226 Difference]: Without dead ends: 286 [2018-01-31 09:18:51,569 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=895, Invalid=3661, Unknown=0, NotChecked=0, Total=4556 [2018-01-31 09:18:51,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2018-01-31 09:18:51,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 269. [2018-01-31 09:18:51,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-01-31 09:18:51,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 279 transitions. [2018-01-31 09:18:51,573 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 279 transitions. Word has length 351 [2018-01-31 09:18:51,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:18:51,573 INFO L432 AbstractCegarLoop]: Abstraction has 269 states and 279 transitions. [2018-01-31 09:18:51,573 INFO L433 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-01-31 09:18:51,573 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 279 transitions. [2018-01-31 09:18:51,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-01-31 09:18:51,574 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:18:51,574 INFO L351 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:18:51,574 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr0AssertViolation]=== [2018-01-31 09:18:51,575 INFO L82 PathProgramCache]: Analyzing trace with hash -347549652, now seen corresponding path program 12 times [2018-01-31 09:18:51,575 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:18:51,575 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:18:51,575 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:51,575 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:18:51,575 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:18:51,590 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:18:51,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2423 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 1871 trivial. 0 not checked. [2018-01-31 09:18:51,979 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:18:51,979 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 09:18:51,984 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 09:18:51,996 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:18:52,011 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:18:52,027 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:18:52,038 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:18:52,051 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:18:52,065 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:18:52,081 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:18:52,123 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:18:52,142 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:18:52,186 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:18:52,228 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:18:52,230 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:18:52,233 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:18:52,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2423 backedges. 856 proven. 56 refuted. 0 times theorem prover too weak. 1511 trivial. 0 not checked. [2018-01-31 09:18:52,404 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:18:52,405 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 11] total 36 [2018-01-31 09:18:52,405 INFO L409 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-01-31 09:18:52,405 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-01-31 09:18:52,405 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1031, Unknown=0, NotChecked=0, Total=1260 [2018-01-31 09:18:52,406 INFO L87 Difference]: Start difference. First operand 269 states and 279 transitions. Second operand 36 states. [2018-01-31 09:18:52,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:18:52,843 INFO L93 Difference]: Finished difference Result 454 states and 475 transitions. [2018-01-31 09:18:52,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-01-31 09:18:52,843 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 392 [2018-01-31 09:18:52,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:18:52,844 INFO L225 Difference]: With dead ends: 454 [2018-01-31 09:18:52,844 INFO L226 Difference]: Without dead ends: 295 [2018-01-31 09:18:52,845 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=965, Invalid=3591, Unknown=0, NotChecked=0, Total=4556 [2018-01-31 09:18:52,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-01-31 09:18:52,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 285. [2018-01-31 09:18:52,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-01-31 09:18:52,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 295 transitions. [2018-01-31 09:18:52,849 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 295 transitions. Word has length 392 [2018-01-31 09:18:52,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:18:52,849 INFO L432 AbstractCegarLoop]: Abstraction has 285 states and 295 transitions. [2018-01-31 09:18:52,849 INFO L433 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-01-31 09:18:52,849 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 295 transitions. [2018-01-31 09:18:52,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-01-31 09:18:52,850 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:18:52,850 INFO L351 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:18:52,851 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr0AssertViolation]=== [2018-01-31 09:18:52,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1649287180, now seen corresponding path program 13 times [2018-01-31 09:18:52,851 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:18:52,851 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:18:52,851 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:52,851 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:18:52,851 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:18:52,865 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:18:53,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2555 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 1905 trivial. 0 not checked. [2018-01-31 09:18:53,343 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:18:53,343 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 09:18:53,348 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:18:53,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:18:53,391 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:18:53,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2555 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 1905 trivial. 0 not checked. [2018-01-31 09:18:53,468 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:18:53,468 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2018-01-31 09:18:53,469 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-31 09:18:53,469 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-31 09:18:53,469 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2018-01-31 09:18:53,469 INFO L87 Difference]: Start difference. First operand 285 states and 295 transitions. Second operand 31 states. [2018-01-31 09:18:53,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:18:53,732 INFO L93 Difference]: Finished difference Result 465 states and 485 transitions. [2018-01-31 09:18:53,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-01-31 09:18:53,734 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 408 [2018-01-31 09:18:53,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:18:53,735 INFO L225 Difference]: With dead ends: 465 [2018-01-31 09:18:53,735 INFO L226 Difference]: Without dead ends: 298 [2018-01-31 09:18:53,736 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 407 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 09:18:53,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2018-01-31 09:18:53,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 293. [2018-01-31 09:18:53,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-01-31 09:18:53,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 303 transitions. [2018-01-31 09:18:53,740 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 303 transitions. Word has length 408 [2018-01-31 09:18:53,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:18:53,740 INFO L432 AbstractCegarLoop]: Abstraction has 293 states and 303 transitions. [2018-01-31 09:18:53,740 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-31 09:18:53,740 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 303 transitions. [2018-01-31 09:18:53,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2018-01-31 09:18:53,741 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:18:53,742 INFO L351 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:18:53,742 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr0AssertViolation]=== [2018-01-31 09:18:53,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1444110475, now seen corresponding path program 14 times [2018-01-31 09:18:53,742 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:18:53,742 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:18:53,742 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:53,743 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:18:53,743 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:18:53,761 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:18:54,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2661 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 1905 trivial. 0 not checked. [2018-01-31 09:18:54,249 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:18:54,249 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 09:18:54,254 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:18:54,267 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:18:54,300 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:18:54,311 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:18:54,314 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:18:54,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2661 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 1905 trivial. 0 not checked. [2018-01-31 09:18:54,409 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:18:54,409 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2018-01-31 09:18:54,409 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-31 09:18:54,409 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-31 09:18:54,410 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2018-01-31 09:18:54,410 INFO L87 Difference]: Start difference. First operand 293 states and 303 transitions. Second operand 33 states. [2018-01-31 09:18:54,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:18:54,744 INFO L93 Difference]: Finished difference Result 473 states and 493 transitions. [2018-01-31 09:18:54,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-01-31 09:18:54,745 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 416 [2018-01-31 09:18:54,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:18:54,746 INFO L225 Difference]: With dead ends: 473 [2018-01-31 09:18:54,746 INFO L226 Difference]: Without dead ends: 306 [2018-01-31 09:18:54,747 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 415 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 09:18:54,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2018-01-31 09:18:54,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 301. [2018-01-31 09:18:54,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-01-31 09:18:54,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 311 transitions. [2018-01-31 09:18:54,750 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 311 transitions. Word has length 416 [2018-01-31 09:18:54,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:18:54,750 INFO L432 AbstractCegarLoop]: Abstraction has 301 states and 311 transitions. [2018-01-31 09:18:54,750 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-31 09:18:54,750 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 311 transitions. [2018-01-31 09:18:54,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-01-31 09:18:54,751 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:18:54,752 INFO L351 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:18:54,752 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr0AssertViolation]=== [2018-01-31 09:18:54,752 INFO L82 PathProgramCache]: Analyzing trace with hash 917349854, now seen corresponding path program 15 times [2018-01-31 09:18:54,752 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:18:54,752 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:18:54,752 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:54,752 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:18:54,753 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:54,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:18:54,766 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:18:55,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 1905 trivial. 0 not checked. [2018-01-31 09:18:55,415 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:18:55,415 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 09:18:55,420 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:18:55,432 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:18:55,436 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:18:55,442 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:18:55,452 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:18:55,472 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:18:55,501 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:18:55,533 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:18:55,535 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:18:55,538 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:18:55,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 856 proven. 90 refuted. 0 times theorem prover too weak. 1829 trivial. 0 not checked. [2018-01-31 09:18:55,826 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:18:55,826 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 13] total 44 [2018-01-31 09:18:55,826 INFO L409 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-01-31 09:18:55,826 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-01-31 09:18:55,827 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=1557, Unknown=0, NotChecked=0, Total=1892 [2018-01-31 09:18:55,827 INFO L87 Difference]: Start difference. First operand 301 states and 311 transitions. Second operand 44 states. [2018-01-31 09:18:56,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:18:56,364 INFO L93 Difference]: Finished difference Result 494 states and 515 transitions. [2018-01-31 09:18:56,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-01-31 09:18:56,365 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 424 [2018-01-31 09:18:56,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:18:56,365 INFO L225 Difference]: With dead ends: 494 [2018-01-31 09:18:56,366 INFO L226 Difference]: Without dead ends: 327 [2018-01-31 09:18:56,367 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1329 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1455, Invalid=5517, Unknown=0, NotChecked=0, Total=6972 [2018-01-31 09:18:56,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-01-31 09:18:56,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 317. [2018-01-31 09:18:56,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-01-31 09:18:56,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 327 transitions. [2018-01-31 09:18:56,371 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 327 transitions. Word has length 424 [2018-01-31 09:18:56,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:18:56,371 INFO L432 AbstractCegarLoop]: Abstraction has 317 states and 327 transitions. [2018-01-31 09:18:56,371 INFO L433 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-01-31 09:18:56,371 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 327 transitions. [2018-01-31 09:18:56,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2018-01-31 09:18:56,372 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:18:56,372 INFO L351 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 16, 16, 16, 16, 16, 16, 16, 7, 6, 6, 6, 6, 6, 6, 6, 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 09:18:56,373 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr0AssertViolation]=== [2018-01-31 09:18:56,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1656799298, now seen corresponding path program 16 times [2018-01-31 09:18:56,373 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:18:56,373 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:18:56,373 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:56,373 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:18:56,373 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:56,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:18:56,387 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:18:56,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2939 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 1947 trivial. 0 not checked. [2018-01-31 09:18:56,971 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:18:56,971 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 09:18:56,975 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 09:18:57,110 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:18:57,114 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:18:57,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2939 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 1947 trivial. 0 not checked. [2018-01-31 09:18:57,221 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:18:57,221 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2018-01-31 09:18:57,222 INFO L409 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-01-31 09:18:57,222 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-01-31 09:18:57,222 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2018-01-31 09:18:57,222 INFO L87 Difference]: Start difference. First operand 317 states and 327 transitions. Second operand 37 states. [2018-01-31 09:18:57,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:18:57,667 INFO L93 Difference]: Finished difference Result 505 states and 525 transitions. [2018-01-31 09:18:57,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-01-31 09:18:57,668 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 440 [2018-01-31 09:18:57,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:18:57,668 INFO L225 Difference]: With dead ends: 505 [2018-01-31 09:18:57,668 INFO L226 Difference]: Without dead ends: 330 [2018-01-31 09:18:57,670 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 439 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 09:18:57,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2018-01-31 09:18:57,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 325. [2018-01-31 09:18:57,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-01-31 09:18:57,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 335 transitions. [2018-01-31 09:18:57,673 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 335 transitions. Word has length 440 [2018-01-31 09:18:57,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:18:57,673 INFO L432 AbstractCegarLoop]: Abstraction has 325 states and 335 transitions. [2018-01-31 09:18:57,673 INFO L433 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-01-31 09:18:57,673 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 335 transitions. [2018-01-31 09:18:57,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2018-01-31 09:18:57,675 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:18:57,675 INFO L351 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 7, 6, 6, 6, 6, 6, 6, 6, 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 09:18:57,675 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr0AssertViolation]=== [2018-01-31 09:18:57,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1868702937, now seen corresponding path program 17 times [2018-01-31 09:18:57,675 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:18:57,675 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:18:57,676 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:57,676 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:18:57,676 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:18:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:18:57,689 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:18:58,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3069 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 1947 trivial. 0 not checked. [2018-01-31 09:18:58,754 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:18:58,754 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 09:18:58,759 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 09:18:58,769 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:18:58,784 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:18:58,794 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:18:58,804 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:18:58,809 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:18:58,811 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:18:58,813 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:18:58,816 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:18:58,823 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:18:58,830 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:18:58,838 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:18:58,846 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:18:58,891 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:18:59,000 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:18:59,425 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:18:59,515 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:18:59,517 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:18:59,522 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:18:59,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3069 backedges. 850 proven. 177 refuted. 0 times theorem prover too weak. 2042 trivial. 0 not checked. [2018-01-31 09:18:59,787 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:18:59,787 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 15] total 50 [2018-01-31 09:18:59,788 INFO L409 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-01-31 09:18:59,788 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-01-31 09:18:59,788 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=422, Invalid=2028, Unknown=0, NotChecked=0, Total=2450 [2018-01-31 09:18:59,788 INFO L87 Difference]: Start difference. First operand 325 states and 335 transitions. Second operand 50 states. [2018-01-31 09:19:00,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:19:00,581 INFO L93 Difference]: Finished difference Result 540 states and 566 transitions. [2018-01-31 09:19:00,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-01-31 09:19:00,581 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 448 [2018-01-31 09:19:00,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:19:00,583 INFO L225 Difference]: With dead ends: 540 [2018-01-31 09:19:00,583 INFO L226 Difference]: Without dead ends: 365 [2018-01-31 09:19:00,585 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1766 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1860, Invalid=7260, Unknown=0, NotChecked=0, Total=9120 [2018-01-31 09:19:00,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2018-01-31 09:19:00,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 348. [2018-01-31 09:19:00,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2018-01-31 09:19:00,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 359 transitions. [2018-01-31 09:19:00,588 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 359 transitions. Word has length 448 [2018-01-31 09:19:00,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:19:00,589 INFO L432 AbstractCegarLoop]: Abstraction has 348 states and 359 transitions. [2018-01-31 09:19:00,589 INFO L433 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-01-31 09:19:00,589 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 359 transitions. [2018-01-31 09:19:00,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2018-01-31 09:19:00,590 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:19:00,590 INFO L351 BasicCegarLoop]: trace histogram [24, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 19, 18, 18, 18, 18, 18, 18, 18, 7, 6, 6, 6, 6, 6, 6, 6, 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 09:19:00,590 INFO L371 AbstractCegarLoop]: === Iteration 22 === [mainErr0AssertViolation]=== [2018-01-31 09:19:00,591 INFO L82 PathProgramCache]: Analyzing trace with hash 823904720, now seen corresponding path program 18 times [2018-01-31 09:19:00,591 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:19:00,591 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:19:00,591 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:19:00,591 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:19:00,591 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:19:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:19:00,616 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:19:01,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3852 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 2592 trivial. 0 not checked. [2018-01-31 09:19:01,549 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:19:01,549 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 09:19:01,555 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 09:19:01,568 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:01,570 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:01,573 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:01,576 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:01,586 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:01,602 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:01,624 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:01,658 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:01,671 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:01,699 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:01,728 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:01,796 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:01,873 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:02,252 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:02,593 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:02,596 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:19:02,601 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:19:03,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3852 backedges. 1144 proven. 245 refuted. 0 times theorem prover too weak. 2463 trivial. 0 not checked. [2018-01-31 09:19:03,047 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:19:03,047 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 17] total 54 [2018-01-31 09:19:03,047 INFO L409 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-01-31 09:19:03,047 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-01-31 09:19:03,048 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=478, Invalid=2384, Unknown=0, NotChecked=0, Total=2862 [2018-01-31 09:19:03,048 INFO L87 Difference]: Start difference. First operand 348 states and 359 transitions. Second operand 54 states. [2018-01-31 09:19:03,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:19:03,917 INFO L93 Difference]: Finished difference Result 578 states and 606 transitions. [2018-01-31 09:19:03,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-01-31 09:19:03,917 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 489 [2018-01-31 09:19:03,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:19:03,918 INFO L225 Difference]: With dead ends: 578 [2018-01-31 09:19:03,918 INFO L226 Difference]: Without dead ends: 388 [2018-01-31 09:19:03,919 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 475 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2098 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2120, Invalid=8592, Unknown=0, NotChecked=0, Total=10712 [2018-01-31 09:19:03,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2018-01-31 09:19:03,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 371. [2018-01-31 09:19:03,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2018-01-31 09:19:03,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 383 transitions. [2018-01-31 09:19:03,923 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 383 transitions. Word has length 489 [2018-01-31 09:19:03,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:19:03,923 INFO L432 AbstractCegarLoop]: Abstraction has 371 states and 383 transitions. [2018-01-31 09:19:03,923 INFO L433 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-01-31 09:19:03,923 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 383 transitions. [2018-01-31 09:19:03,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2018-01-31 09:19:03,925 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:19:03,925 INFO L351 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:19:03,925 INFO L371 AbstractCegarLoop]: === Iteration 23 === [mainErr0AssertViolation]=== [2018-01-31 09:19:03,926 INFO L82 PathProgramCache]: Analyzing trace with hash 972984121, now seen corresponding path program 19 times [2018-01-31 09:19:03,926 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:19:03,926 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:19:03,926 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:19:03,926 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:19:03,926 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:19:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:19:03,943 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:19:04,786 INFO L134 CoverageAnalysis]: Checked inductivity of 4742 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 3336 trivial. 0 not checked. [2018-01-31 09:19:04,787 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:19:04,787 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 09:19:04,792 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:19:04,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:19:04,845 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:19:05,054 INFO L134 CoverageAnalysis]: Checked inductivity of 4742 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 3336 trivial. 0 not checked. [2018-01-31 09:19:05,078 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:19:05,079 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2018-01-31 09:19:05,079 INFO L409 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-01-31 09:19:05,079 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-01-31 09:19:05,079 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2018-01-31 09:19:05,079 INFO L87 Difference]: Start difference. First operand 371 states and 383 transitions. Second operand 43 states. [2018-01-31 09:19:05,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:19:05,546 INFO L93 Difference]: Finished difference Result 589 states and 613 transitions. [2018-01-31 09:19:05,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-01-31 09:19:05,546 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 530 [2018-01-31 09:19:05,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:19:05,547 INFO L225 Difference]: With dead ends: 589 [2018-01-31 09:19:05,547 INFO L226 Difference]: Without dead ends: 384 [2018-01-31 09:19:05,548 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2044, Invalid=4436, Unknown=0, NotChecked=0, Total=6480 [2018-01-31 09:19:05,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2018-01-31 09:19:05,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 379. [2018-01-31 09:19:05,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-01-31 09:19:05,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 391 transitions. [2018-01-31 09:19:05,552 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 391 transitions. Word has length 530 [2018-01-31 09:19:05,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:19:05,552 INFO L432 AbstractCegarLoop]: Abstraction has 379 states and 391 transitions. [2018-01-31 09:19:05,552 INFO L433 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-01-31 09:19:05,552 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 391 transitions. [2018-01-31 09:19:05,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2018-01-31 09:19:05,554 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:19:05,554 INFO L351 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:19:05,554 INFO L371 AbstractCegarLoop]: === Iteration 24 === [mainErr0AssertViolation]=== [2018-01-31 09:19:05,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1407483550, now seen corresponding path program 20 times [2018-01-31 09:19:05,554 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:19:05,555 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:19:05,555 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:19:05,555 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:19:05,555 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:19:05,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:19:05,573 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:19:06,534 INFO L134 CoverageAnalysis]: Checked inductivity of 4896 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 3336 trivial. 0 not checked. [2018-01-31 09:19:06,534 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:19:06,534 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 09:19:06,539 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:19:06,553 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:06,586 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:06,592 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:19:06,596 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:19:06,838 INFO L134 CoverageAnalysis]: Checked inductivity of 4896 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 3336 trivial. 0 not checked. [2018-01-31 09:19:06,857 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:19:06,857 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2018-01-31 09:19:06,858 INFO L409 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-01-31 09:19:06,858 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-01-31 09:19:06,858 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2018-01-31 09:19:06,858 INFO L87 Difference]: Start difference. First operand 379 states and 391 transitions. Second operand 45 states. [2018-01-31 09:19:07,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:19:07,440 INFO L93 Difference]: Finished difference Result 597 states and 621 transitions. [2018-01-31 09:19:07,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-01-31 09:19:07,441 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 538 [2018-01-31 09:19:07,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:19:07,442 INFO L225 Difference]: With dead ends: 597 [2018-01-31 09:19:07,442 INFO L226 Difference]: Without dead ends: 392 [2018-01-31 09:19:07,443 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2251, Invalid=4889, Unknown=0, NotChecked=0, Total=7140 [2018-01-31 09:19:07,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2018-01-31 09:19:07,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 387. [2018-01-31 09:19:07,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-01-31 09:19:07,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 399 transitions. [2018-01-31 09:19:07,447 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 399 transitions. Word has length 538 [2018-01-31 09:19:07,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:19:07,447 INFO L432 AbstractCegarLoop]: Abstraction has 387 states and 399 transitions. [2018-01-31 09:19:07,447 INFO L433 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-01-31 09:19:07,447 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 399 transitions. [2018-01-31 09:19:07,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2018-01-31 09:19:07,449 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:19:07,449 INFO L351 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:19:07,449 INFO L371 AbstractCegarLoop]: === Iteration 25 === [mainErr0AssertViolation]=== [2018-01-31 09:19:07,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1306772853, now seen corresponding path program 21 times [2018-01-31 09:19:07,450 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:19:07,450 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:19:07,450 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:19:07,450 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:19:07,450 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:19:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:19:07,467 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:19:08,776 INFO L134 CoverageAnalysis]: Checked inductivity of 5058 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 3336 trivial. 0 not checked. [2018-01-31 09:19:08,776 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:19:08,776 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 09:19:08,794 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:19:08,810 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:19:08,821 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:19:08,831 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:19:08,842 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:19:08,859 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:19:08,889 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:19:08,964 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:19:09,034 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:19:09,037 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:19:09,040 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:19:09,329 INFO L134 CoverageAnalysis]: Checked inductivity of 5058 backedges. 1488 proven. 132 refuted. 0 times theorem prover too weak. 3438 trivial. 0 not checked. [2018-01-31 09:19:09,349 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:19:09,349 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 15] total 58 [2018-01-31 09:19:09,350 INFO L409 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-01-31 09:19:09,350 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-01-31 09:19:09,350 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=590, Invalid=2716, Unknown=0, NotChecked=0, Total=3306 [2018-01-31 09:19:09,350 INFO L87 Difference]: Start difference. First operand 387 states and 399 transitions. Second operand 58 states. [2018-01-31 09:19:10,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:19:10,386 INFO L93 Difference]: Finished difference Result 618 states and 643 transitions. [2018-01-31 09:19:10,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-01-31 09:19:10,386 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 546 [2018-01-31 09:19:10,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:19:10,387 INFO L225 Difference]: With dead ends: 618 [2018-01-31 09:19:10,387 INFO L226 Difference]: Without dead ends: 413 [2018-01-31 09:19:10,389 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 644 GetRequests, 534 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2414 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2660, Invalid=9772, Unknown=0, NotChecked=0, Total=12432 [2018-01-31 09:19:10,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2018-01-31 09:19:10,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 403. [2018-01-31 09:19:10,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2018-01-31 09:19:10,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 415 transitions. [2018-01-31 09:19:10,392 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 415 transitions. Word has length 546 [2018-01-31 09:19:10,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:19:10,393 INFO L432 AbstractCegarLoop]: Abstraction has 403 states and 415 transitions. [2018-01-31 09:19:10,393 INFO L433 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-01-31 09:19:10,393 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 415 transitions. [2018-01-31 09:19:10,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2018-01-31 09:19:10,395 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:19:10,395 INFO L351 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:19:10,395 INFO L371 AbstractCegarLoop]: === Iteration 26 === [mainErr0AssertViolation]=== [2018-01-31 09:19:10,395 INFO L82 PathProgramCache]: Analyzing trace with hash -314423573, now seen corresponding path program 22 times [2018-01-31 09:19:10,395 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:19:10,395 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:19:10,396 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:19:10,396 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:19:10,396 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:19:10,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:19:10,413 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:19:11,473 INFO L134 CoverageAnalysis]: Checked inductivity of 5278 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 3386 trivial. 0 not checked. [2018-01-31 09:19:11,473 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:19:11,473 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 09:19:11,479 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 09:19:11,858 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:19:11,862 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:19:12,074 INFO L134 CoverageAnalysis]: Checked inductivity of 5278 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 3386 trivial. 0 not checked. [2018-01-31 09:19:12,101 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:19:12,101 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 49 [2018-01-31 09:19:12,101 INFO L409 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-01-31 09:19:12,102 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-01-31 09:19:12,102 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2018-01-31 09:19:12,102 INFO L87 Difference]: Start difference. First operand 403 states and 415 transitions. Second operand 49 states. [2018-01-31 09:19:12,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:19:12,878 INFO L93 Difference]: Finished difference Result 629 states and 653 transitions. [2018-01-31 09:19:12,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-01-31 09:19:12,882 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 562 [2018-01-31 09:19:12,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:19:12,883 INFO L225 Difference]: With dead ends: 629 [2018-01-31 09:19:12,883 INFO L226 Difference]: Without dead ends: 416 [2018-01-31 09:19:12,884 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 561 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1616 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2695, Invalid=5861, Unknown=0, NotChecked=0, Total=8556 [2018-01-31 09:19:12,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2018-01-31 09:19:12,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 411. [2018-01-31 09:19:12,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-01-31 09:19:12,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 423 transitions. [2018-01-31 09:19:12,887 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 423 transitions. Word has length 562 [2018-01-31 09:19:12,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:19:12,888 INFO L432 AbstractCegarLoop]: Abstraction has 411 states and 423 transitions. [2018-01-31 09:19:12,888 INFO L433 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-01-31 09:19:12,888 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 423 transitions. [2018-01-31 09:19:12,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2018-01-31 09:19:12,890 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:19:12,890 INFO L351 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:19:12,890 INFO L371 AbstractCegarLoop]: === Iteration 27 === [mainErr0AssertViolation]=== [2018-01-31 09:19:12,890 INFO L82 PathProgramCache]: Analyzing trace with hash 111432980, now seen corresponding path program 23 times [2018-01-31 09:19:12,891 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:19:12,891 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:19:12,891 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:19:12,891 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:19:12,891 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:19:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:19:12,908 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:19:14,035 INFO L134 CoverageAnalysis]: Checked inductivity of 5456 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 3386 trivial. 0 not checked. [2018-01-31 09:19:14,035 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:19:14,035 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 09:19:14,040 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 09:19:14,051 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:14,052 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:14,053 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:14,055 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:14,057 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:14,058 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:14,060 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:14,064 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:14,068 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:14,071 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:14,078 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:14,083 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:14,091 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:14,098 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:14,109 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:14,120 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:14,139 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:14,174 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:14,236 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:14,812 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:15,034 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:15,997 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:15,999 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:19:16,005 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:19:16,329 INFO L134 CoverageAnalysis]: Checked inductivity of 5456 backedges. 1482 proven. 324 refuted. 0 times theorem prover too weak. 3650 trivial. 0 not checked. [2018-01-31 09:19:16,348 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:19:16,348 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 19] total 66 [2018-01-31 09:19:16,348 INFO L409 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-01-31 09:19:16,349 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-01-31 09:19:16,349 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=722, Invalid=3568, Unknown=0, NotChecked=0, Total=4290 [2018-01-31 09:19:16,349 INFO L87 Difference]: Start difference. First operand 411 states and 423 transitions. Second operand 66 states. [2018-01-31 09:19:17,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:19:17,520 INFO L93 Difference]: Finished difference Result 664 states and 694 transitions. [2018-01-31 09:19:17,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-01-31 09:19:17,520 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 570 [2018-01-31 09:19:17,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:19:17,521 INFO L225 Difference]: With dead ends: 664 [2018-01-31 09:19:17,521 INFO L226 Difference]: Without dead ends: 451 [2018-01-31 09:19:17,523 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 554 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3218 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3280, Invalid=12976, Unknown=0, NotChecked=0, Total=16256 [2018-01-31 09:19:17,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2018-01-31 09:19:17,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 434. [2018-01-31 09:19:17,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-01-31 09:19:17,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 447 transitions. [2018-01-31 09:19:17,527 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 447 transitions. Word has length 570 [2018-01-31 09:19:17,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:19:17,527 INFO L432 AbstractCegarLoop]: Abstraction has 434 states and 447 transitions. [2018-01-31 09:19:17,527 INFO L433 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-01-31 09:19:17,527 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 447 transitions. [2018-01-31 09:19:17,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2018-01-31 09:19:17,529 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:19:17,529 INFO L351 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:19:17,530 INFO L371 AbstractCegarLoop]: === Iteration 28 === [mainErr0AssertViolation]=== [2018-01-31 09:19:17,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1982050685, now seen corresponding path program 24 times [2018-01-31 09:19:17,530 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:19:17,530 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:19:17,530 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:19:17,530 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:19:17,530 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:19:17,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:19:17,548 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:19:18,887 INFO L134 CoverageAnalysis]: Checked inductivity of 6485 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 4229 trivial. 0 not checked. [2018-01-31 09:19:18,887 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:19:18,887 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-01-31 09:19:18,892 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 09:19:18,907 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:18,909 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:18,912 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:18,914 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:18,920 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:18,946 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:18,955 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:19,001 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:19,029 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:19,173 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:19,354 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:19,463 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:19,578 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:19,701 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:19,793 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:19,942 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:19,982 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:19,985 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:19:19,990 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:19:20,313 INFO L134 CoverageAnalysis]: Checked inductivity of 6485 backedges. 1870 proven. 182 refuted. 0 times theorem prover too weak. 4433 trivial. 0 not checked. [2018-01-31 09:19:20,333 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:19:20,333 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 17] total 66 [2018-01-31 09:19:20,334 INFO L409 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-01-31 09:19:20,334 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-01-31 09:19:20,334 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=754, Invalid=3536, Unknown=0, NotChecked=0, Total=4290 [2018-01-31 09:19:20,334 INFO L87 Difference]: Start difference. First operand 434 states and 447 transitions. Second operand 66 states. [2018-01-31 09:19:23,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:19:23,201 INFO L93 Difference]: Finished difference Result 688 states and 715 transitions. [2018-01-31 09:19:23,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-01-31 09:19:23,201 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 611 [2018-01-31 09:19:23,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:19:23,202 INFO L225 Difference]: With dead ends: 688 [2018-01-31 09:19:23,203 INFO L226 Difference]: Without dead ends: 460 [2018-01-31 09:19:23,204 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 723 GetRequests, 597 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3190 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3440, Invalid=12816, Unknown=0, NotChecked=0, Total=16256 [2018-01-31 09:19:23,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2018-01-31 09:19:23,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 450. [2018-01-31 09:19:23,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2018-01-31 09:19:23,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 463 transitions. [2018-01-31 09:19:23,208 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 463 transitions. Word has length 611 [2018-01-31 09:19:23,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:19:23,208 INFO L432 AbstractCegarLoop]: Abstraction has 450 states and 463 transitions. [2018-01-31 09:19:23,208 INFO L433 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-01-31 09:19:23,208 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 463 transitions. [2018-01-31 09:19:23,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2018-01-31 09:19:23,211 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:19:23,211 INFO L351 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:19:23,211 INFO L371 AbstractCegarLoop]: === Iteration 29 === [mainErr0AssertViolation]=== [2018-01-31 09:19:23,211 INFO L82 PathProgramCache]: Analyzing trace with hash -277592349, now seen corresponding path program 25 times [2018-01-31 09:19:23,211 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:19:23,211 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:19:23,212 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:19:23,212 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:19:23,212 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:19:23,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:19:23,230 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:19:24,633 INFO L134 CoverageAnalysis]: Checked inductivity of 6737 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 4287 trivial. 0 not checked. [2018-01-31 09:19:24,633 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:19:24,633 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 09:19:24,638 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:19:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:19:24,698 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:19:24,846 INFO L134 CoverageAnalysis]: Checked inductivity of 6737 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 4287 trivial. 0 not checked. [2018-01-31 09:19:24,864 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:19:24,865 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 55 [2018-01-31 09:19:24,865 INFO L409 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-01-31 09:19:24,865 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-01-31 09:19:24,865 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=783, Invalid=2187, Unknown=0, NotChecked=0, Total=2970 [2018-01-31 09:19:24,866 INFO L87 Difference]: Start difference. First operand 450 states and 463 transitions. Second operand 55 states. [2018-01-31 09:19:25,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:19:25,704 INFO L93 Difference]: Finished difference Result 699 states and 725 transitions. [2018-01-31 09:19:25,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-01-31 09:19:25,705 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 627 [2018-01-31 09:19:25,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:19:25,706 INFO L225 Difference]: With dead ends: 699 [2018-01-31 09:19:25,706 INFO L226 Difference]: Without dead ends: 463 [2018-01-31 09:19:25,707 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 729 GetRequests, 626 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2063 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=3436, Invalid=7484, Unknown=0, NotChecked=0, Total=10920 [2018-01-31 09:19:25,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2018-01-31 09:19:25,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 458. [2018-01-31 09:19:25,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 458 states. [2018-01-31 09:19:25,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 471 transitions. [2018-01-31 09:19:25,711 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 471 transitions. Word has length 627 [2018-01-31 09:19:25,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:19:25,711 INFO L432 AbstractCegarLoop]: Abstraction has 458 states and 471 transitions. [2018-01-31 09:19:25,711 INFO L433 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-01-31 09:19:25,711 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 471 transitions. [2018-01-31 09:19:25,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2018-01-31 09:19:25,713 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:19:25,713 INFO L351 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:19:25,714 INFO L371 AbstractCegarLoop]: === Iteration 30 === [mainErr0AssertViolation]=== [2018-01-31 09:19:25,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1386166822, now seen corresponding path program 26 times [2018-01-31 09:19:25,714 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:19:25,714 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:19:25,714 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:19:25,714 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:19:25,714 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:19:25,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:19:25,733 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:19:27,177 INFO L134 CoverageAnalysis]: Checked inductivity of 6939 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 4287 trivial. 0 not checked. [2018-01-31 09:19:27,178 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:19:27,178 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 09:19:27,183 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:19:27,198 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:27,236 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:27,244 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:19:27,248 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:19:27,399 INFO L134 CoverageAnalysis]: Checked inductivity of 6939 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 4287 trivial. 0 not checked. [2018-01-31 09:19:27,416 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:19:27,416 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 57 [2018-01-31 09:19:27,417 INFO L409 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-01-31 09:19:27,417 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-01-31 09:19:27,417 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=840, Invalid=2352, Unknown=0, NotChecked=0, Total=3192 [2018-01-31 09:19:27,417 INFO L87 Difference]: Start difference. First operand 458 states and 471 transitions. Second operand 57 states. [2018-01-31 09:19:28,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:19:28,213 INFO L93 Difference]: Finished difference Result 707 states and 733 transitions. [2018-01-31 09:19:28,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-01-31 09:19:28,213 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 635 [2018-01-31 09:19:28,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:19:28,214 INFO L225 Difference]: With dead ends: 707 [2018-01-31 09:19:28,214 INFO L226 Difference]: Without dead ends: 471 [2018-01-31 09:19:28,215 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 741 GetRequests, 634 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 09:19:28,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2018-01-31 09:19:28,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 466. [2018-01-31 09:19:28,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2018-01-31 09:19:28,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 479 transitions. [2018-01-31 09:19:28,219 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 479 transitions. Word has length 635 [2018-01-31 09:19:28,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:19:28,220 INFO L432 AbstractCegarLoop]: Abstraction has 466 states and 479 transitions. [2018-01-31 09:19:28,220 INFO L433 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-01-31 09:19:28,220 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 479 transitions. [2018-01-31 09:19:28,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2018-01-31 09:19:28,222 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:19:28,222 INFO L351 BasicCegarLoop]: trace histogram [30, 28, 27, 27, 27, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:19:28,222 INFO L371 AbstractCegarLoop]: === Iteration 31 === [mainErr0AssertViolation]=== [2018-01-31 09:19:28,222 INFO L82 PathProgramCache]: Analyzing trace with hash 2079743441, now seen corresponding path program 27 times [2018-01-31 09:19:28,223 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:19:28,223 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:19:28,223 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:19:28,223 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:19:28,223 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:19:28,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:19:28,241 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:19:29,800 INFO L134 CoverageAnalysis]: Checked inductivity of 7149 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 4287 trivial. 0 not checked. [2018-01-31 09:19:29,800 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:19:29,800 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 09:19:29,805 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:19:29,820 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:19:29,824 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:19:29,829 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:19:29,840 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:19:29,852 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:19:29,871 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:19:29,891 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:19:29,950 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:19:30,086 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:19:30,277 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:19:30,280 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:19:30,284 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:19:30,693 INFO L134 CoverageAnalysis]: Checked inductivity of 7149 backedges. 1864 proven. 414 refuted. 0 times theorem prover too weak. 4871 trivial. 0 not checked. [2018-01-31 09:19:30,711 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:19:30,712 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 21] total 76 [2018-01-31 09:19:30,712 INFO L409 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-01-31 09:19:30,712 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-01-31 09:19:30,713 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=959, Invalid=4741, Unknown=0, NotChecked=0, Total=5700 [2018-01-31 09:19:30,713 INFO L87 Difference]: Start difference. First operand 466 states and 479 transitions. Second operand 76 states. [2018-01-31 09:19:32,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:19:32,362 INFO L93 Difference]: Finished difference Result 742 states and 774 transitions. [2018-01-31 09:19:32,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-01-31 09:19:32,363 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 643 [2018-01-31 09:19:32,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:19:32,365 INFO L225 Difference]: With dead ends: 742 [2018-01-31 09:19:32,365 INFO L226 Difference]: Without dead ends: 506 [2018-01-31 09:19:32,366 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 771 GetRequests, 625 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4337 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=4415, Invalid=17341, Unknown=0, NotChecked=0, Total=21756 [2018-01-31 09:19:32,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2018-01-31 09:19:32,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 489. [2018-01-31 09:19:32,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2018-01-31 09:19:32,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 503 transitions. [2018-01-31 09:19:32,370 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 503 transitions. Word has length 643 [2018-01-31 09:19:32,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:19:32,384 INFO L432 AbstractCegarLoop]: Abstraction has 489 states and 503 transitions. [2018-01-31 09:19:32,384 INFO L433 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-01-31 09:19:32,384 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 503 transitions. [2018-01-31 09:19:32,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 685 [2018-01-31 09:19:32,387 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:19:32,387 INFO L351 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 29, 28, 28, 28, 28, 28, 28, 28, 9, 8, 8, 8, 8, 8, 8, 8, 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 09:19:32,387 INFO L371 AbstractCegarLoop]: === Iteration 32 === [mainErr0AssertViolation]=== [2018-01-31 09:19:32,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1333298584, now seen corresponding path program 28 times [2018-01-31 09:19:32,388 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:19:32,388 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:19:32,388 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:19:32,388 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:19:32,388 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:19:32,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:19:32,431 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:19:34,110 INFO L134 CoverageAnalysis]: Checked inductivity of 8309 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 5229 trivial. 0 not checked. [2018-01-31 09:19:34,111 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:19:34,111 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:19:34,115 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 09:19:34,828 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:19:34,834 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:19:35,001 INFO L134 CoverageAnalysis]: Checked inductivity of 8309 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 5229 trivial. 0 not checked. [2018-01-31 09:19:35,022 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:19:35,022 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 61 [2018-01-31 09:19:35,022 INFO L409 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-01-31 09:19:35,022 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-01-31 09:19:35,023 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2018-01-31 09:19:35,023 INFO L87 Difference]: Start difference. First operand 489 states and 503 transitions. Second operand 61 states. [2018-01-31 09:19:36,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:19:36,044 INFO L93 Difference]: Finished difference Result 753 states and 781 transitions. [2018-01-31 09:19:36,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-01-31 09:19:36,046 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 684 [2018-01-31 09:19:36,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:19:36,048 INFO L225 Difference]: With dead ends: 753 [2018-01-31 09:19:36,048 INFO L226 Difference]: Without dead ends: 502 [2018-01-31 09:19:36,049 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 798 GetRequests, 683 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2564 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=4267, Invalid=9305, Unknown=0, NotChecked=0, Total=13572 [2018-01-31 09:19:36,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2018-01-31 09:19:36,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 497. [2018-01-31 09:19:36,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2018-01-31 09:19:36,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 511 transitions. [2018-01-31 09:19:36,054 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 511 transitions. Word has length 684 [2018-01-31 09:19:36,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:19:36,054 INFO L432 AbstractCegarLoop]: Abstraction has 497 states and 511 transitions. [2018-01-31 09:19:36,054 INFO L433 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-01-31 09:19:36,054 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 511 transitions. [2018-01-31 09:19:36,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 693 [2018-01-31 09:19:36,057 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:19:36,057 INFO L351 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 29, 29, 29, 29, 29, 29, 29, 9, 8, 8, 8, 8, 8, 8, 8, 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 09:19:36,057 INFO L371 AbstractCegarLoop]: === Iteration 33 === [mainErr0AssertViolation]=== [2018-01-31 09:19:36,057 INFO L82 PathProgramCache]: Analyzing trace with hash 758060673, now seen corresponding path program 29 times [2018-01-31 09:19:36,058 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:19:36,058 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:19:36,058 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:19:36,058 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:19:36,058 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:19:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:19:36,078 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:19:37,850 INFO L134 CoverageAnalysis]: Checked inductivity of 8535 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 5229 trivial. 0 not checked. [2018-01-31 09:19:37,850 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:19:37,850 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 09:19:37,855 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 09:19:37,869 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:37,870 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:37,872 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:37,873 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:37,875 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:37,876 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:37,878 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:37,881 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:37,883 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:37,887 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:37,890 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:37,896 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:37,903 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:37,911 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:37,916 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:37,935 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:37,942 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:37,972 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:37,996 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:38,018 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:38,066 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:38,090 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:38,315 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:39,293 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:40,080 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:40,480 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:43,225 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:51,919 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:19:51,925 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:19:51,936 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:19:52,442 INFO L134 CoverageAnalysis]: Checked inductivity of 8535 backedges. 2290 proven. 515 refuted. 0 times theorem prover too weak. 5730 trivial. 0 not checked. [2018-01-31 09:19:52,465 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:19:52,465 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 23] total 82 [2018-01-31 09:19:52,465 INFO L409 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-01-31 09:19:52,465 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-01-31 09:19:52,466 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1102, Invalid=5540, Unknown=0, NotChecked=0, Total=6642 [2018-01-31 09:19:52,466 INFO L87 Difference]: Start difference. First operand 497 states and 511 transitions. Second operand 82 states. [2018-01-31 09:19:54,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:19:54,314 INFO L93 Difference]: Finished difference Result 788 states and 822 transitions. [2018-01-31 09:19:54,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-01-31 09:19:54,314 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 692 [2018-01-31 09:19:54,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:19:54,315 INFO L225 Difference]: With dead ends: 788 [2018-01-31 09:19:54,315 INFO L226 Difference]: Without dead ends: 537 [2018-01-31 09:19:54,317 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 672 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5102 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=5100, Invalid=20340, Unknown=0, NotChecked=0, Total=25440 [2018-01-31 09:19:54,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2018-01-31 09:19:54,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 520. [2018-01-31 09:19:54,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2018-01-31 09:19:54,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 535 transitions. [2018-01-31 09:19:54,332 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 535 transitions. Word has length 692 [2018-01-31 09:19:54,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:19:54,332 INFO L432 AbstractCegarLoop]: Abstraction has 520 states and 535 transitions. [2018-01-31 09:19:54,332 INFO L433 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-01-31 09:19:54,332 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 535 transitions. [2018-01-31 09:19:54,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2018-01-31 09:19:54,335 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:19:54,335 INFO L351 BasicCegarLoop]: trace histogram [36, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 31, 30, 30, 30, 30, 30, 30, 30, 9, 8, 8, 8, 8, 8, 8, 8, 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 09:19:54,335 INFO L371 AbstractCegarLoop]: === Iteration 34 === [mainErr0AssertViolation]=== [2018-01-31 09:19:54,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1330377802, now seen corresponding path program 30 times [2018-01-31 09:19:54,335 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:19:54,335 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:19:54,336 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:19:54,336 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:19:54,336 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:19:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:19:54,375 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:19:56,426 INFO L134 CoverageAnalysis]: Checked inductivity of 9810 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 6270 trivial. 0 not checked. [2018-01-31 09:19:56,426 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:19:56,427 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 09:19:56,431 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 09:19:56,450 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:56,452 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:56,455 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:56,457 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:56,462 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:56,470 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:56,494 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:56,509 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:56,526 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:56,545 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:56,562 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:56,618 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:56,675 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:56,743 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:56,812 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:57,028 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:57,086 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:57,576 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:57,639 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:19:57,641 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:19:57,647 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:19:58,119 INFO L134 CoverageAnalysis]: Checked inductivity of 9810 backedges. 2766 proven. 240 refuted. 0 times theorem prover too weak. 6804 trivial. 0 not checked. [2018-01-31 09:19:58,138 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:19:58,138 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 19] total 80 [2018-01-31 09:19:58,138 INFO L409 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-01-31 09:19:58,138 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-01-31 09:19:58,139 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1121, Invalid=5199, Unknown=0, NotChecked=0, Total=6320 [2018-01-31 09:19:58,139 INFO L87 Difference]: Start difference. First operand 520 states and 535 transitions. Second operand 80 states. [2018-01-31 09:20:00,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:20:00,006 INFO L93 Difference]: Finished difference Result 812 states and 843 transitions. [2018-01-31 09:20:00,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-01-31 09:20:00,006 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 733 [2018-01-31 09:20:00,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:20:00,008 INFO L225 Difference]: With dead ends: 812 [2018-01-31 09:20:00,008 INFO L226 Difference]: Without dead ends: 546 [2018-01-31 09:20:00,010 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 871 GetRequests, 717 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4779 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=5205, Invalid=18975, Unknown=0, NotChecked=0, Total=24180 [2018-01-31 09:20:00,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2018-01-31 09:20:00,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 536. [2018-01-31 09:20:00,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2018-01-31 09:20:00,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 551 transitions. [2018-01-31 09:20:00,014 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 551 transitions. Word has length 733 [2018-01-31 09:20:00,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:20:00,015 INFO L432 AbstractCegarLoop]: Abstraction has 536 states and 551 transitions. [2018-01-31 09:20:00,015 INFO L433 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-01-31 09:20:00,015 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 551 transitions. [2018-01-31 09:20:00,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2018-01-31 09:20:00,018 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:20:00,018 INFO L351 BasicCegarLoop]: trace histogram [36, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 32, 31, 31, 31, 31, 31, 31, 31, 10, 9, 9, 9, 9, 9, 9, 9, 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 09:20:00,019 INFO L371 AbstractCegarLoop]: === Iteration 35 === [mainErr0AssertViolation]=== [2018-01-31 09:20:00,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1780453782, now seen corresponding path program 31 times [2018-01-31 09:20:00,019 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:20:00,019 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:20:00,019 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:20:00,019 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:20:00,019 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:20:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:20:00,043 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:20:02,276 INFO L134 CoverageAnalysis]: Checked inductivity of 10118 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 6336 trivial. 0 not checked. [2018-01-31 09:20:02,277 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:20:02,277 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 09:20:02,281 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:20:02,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:20:02,354 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:20:02,544 INFO L134 CoverageAnalysis]: Checked inductivity of 10118 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 6336 trivial. 0 not checked. [2018-01-31 09:20:02,563 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:20:02,563 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 67 [2018-01-31 09:20:02,563 INFO L409 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-01-31 09:20:02,564 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-01-31 09:20:02,564 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1155, Invalid=3267, Unknown=0, NotChecked=0, Total=4422 [2018-01-31 09:20:02,564 INFO L87 Difference]: Start difference. First operand 536 states and 551 transitions. Second operand 67 states. [2018-01-31 09:20:03,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:20:03,682 INFO L93 Difference]: Finished difference Result 823 states and 853 transitions. [2018-01-31 09:20:03,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-01-31 09:20:03,682 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 749 [2018-01-31 09:20:03,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:20:03,683 INFO L225 Difference]: With dead ends: 823 [2018-01-31 09:20:03,684 INFO L226 Difference]: Without dead ends: 549 [2018-01-31 09:20:03,685 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 875 GetRequests, 748 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 09:20:03,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2018-01-31 09:20:03,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 544. [2018-01-31 09:20:03,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2018-01-31 09:20:03,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 559 transitions. [2018-01-31 09:20:03,692 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 559 transitions. Word has length 749 [2018-01-31 09:20:03,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:20:03,693 INFO L432 AbstractCegarLoop]: Abstraction has 544 states and 559 transitions. [2018-01-31 09:20:03,693 INFO L433 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-01-31 09:20:03,693 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 559 transitions. [2018-01-31 09:20:03,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 758 [2018-01-31 09:20:03,702 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:20:03,703 INFO L351 BasicCegarLoop]: trace histogram [36, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 32, 32, 32, 32, 32, 32, 32, 10, 9, 9, 9, 9, 9, 9, 9, 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 09:20:03,703 INFO L371 AbstractCegarLoop]: === Iteration 36 === [mainErr0AssertViolation]=== [2018-01-31 09:20:03,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1425925581, now seen corresponding path program 32 times [2018-01-31 09:20:03,703 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:20:03,703 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:20:03,703 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:20:03,703 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:20:03,703 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:20:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:20:03,745 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:20:06,022 INFO L134 CoverageAnalysis]: Checked inductivity of 10368 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 6336 trivial. 0 not checked. [2018-01-31 09:20:06,022 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:20:06,022 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 09:20:06,026 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:20:06,044 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:20:06,087 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:20:06,096 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:20:06,101 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:20:06,286 INFO L134 CoverageAnalysis]: Checked inductivity of 10368 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 6336 trivial. 0 not checked. [2018-01-31 09:20:06,305 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:20:06,305 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 69 [2018-01-31 09:20:06,305 INFO L409 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-01-31 09:20:06,306 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-01-31 09:20:06,306 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1224, Invalid=3468, Unknown=0, NotChecked=0, Total=4692 [2018-01-31 09:20:06,306 INFO L87 Difference]: Start difference. First operand 544 states and 559 transitions. Second operand 69 states. [2018-01-31 09:20:07,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:20:07,494 INFO L93 Difference]: Finished difference Result 831 states and 861 transitions. [2018-01-31 09:20:07,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-01-31 09:20:07,494 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 757 [2018-01-31 09:20:07,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:20:07,495 INFO L225 Difference]: With dead ends: 831 [2018-01-31 09:20:07,495 INFO L226 Difference]: Without dead ends: 557 [2018-01-31 09:20:07,497 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 887 GetRequests, 756 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 09:20:07,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2018-01-31 09:20:07,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 552. [2018-01-31 09:20:07,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2018-01-31 09:20:07,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 567 transitions. [2018-01-31 09:20:07,501 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 567 transitions. Word has length 757 [2018-01-31 09:20:07,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:20:07,501 INFO L432 AbstractCegarLoop]: Abstraction has 552 states and 567 transitions. [2018-01-31 09:20:07,501 INFO L433 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-01-31 09:20:07,501 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 567 transitions. [2018-01-31 09:20:07,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 766 [2018-01-31 09:20:07,504 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:20:07,504 INFO L351 BasicCegarLoop]: trace histogram [36, 34, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 10, 9, 9, 9, 9, 9, 9, 9, 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 09:20:07,504 INFO L371 AbstractCegarLoop]: === Iteration 37 === [mainErr0AssertViolation]=== [2018-01-31 09:20:07,505 INFO L82 PathProgramCache]: Analyzing trace with hash -788786428, now seen corresponding path program 33 times [2018-01-31 09:20:07,505 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:20:07,505 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:20:07,505 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:20:07,505 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:20:07,505 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:20:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:20:07,530 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:20:09,838 INFO L134 CoverageAnalysis]: Checked inductivity of 10626 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 6336 trivial. 0 not checked. [2018-01-31 09:20:09,838 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:20:09,838 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:20:09,843 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:20:09,862 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:20:09,866 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:20:09,872 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:20:09,882 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:20:09,896 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:20:09,919 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:20:09,941 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:20:09,987 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:20:10,012 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:20:10,055 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:20:10,088 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:20:10,090 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:20:10,095 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:20:10,670 INFO L134 CoverageAnalysis]: Checked inductivity of 10626 backedges. 2766 proven. 306 refuted. 0 times theorem prover too weak. 7554 trivial. 0 not checked. [2018-01-31 09:20:10,688 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:20:10,688 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 21] total 88 [2018-01-31 09:20:10,688 INFO L409 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-01-31 09:20:10,689 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-01-31 09:20:10,689 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1343, Invalid=6313, Unknown=0, NotChecked=0, Total=7656 [2018-01-31 09:20:10,689 INFO L87 Difference]: Start difference. First operand 552 states and 567 transitions. Second operand 88 states. [2018-01-31 09:20:12,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:20:12,929 INFO L93 Difference]: Finished difference Result 852 states and 883 transitions. [2018-01-31 09:20:12,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-01-31 09:20:12,930 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 765 [2018-01-31 09:20:12,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:20:12,931 INFO L225 Difference]: With dead ends: 852 [2018-01-31 09:20:12,931 INFO L226 Difference]: Without dead ends: 578 [2018-01-31 09:20:12,933 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 917 GetRequests, 747 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5849 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=6275, Invalid=23137, Unknown=0, NotChecked=0, Total=29412 [2018-01-31 09:20:12,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2018-01-31 09:20:12,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 568. [2018-01-31 09:20:12,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 568 states. [2018-01-31 09:20:12,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 583 transitions. [2018-01-31 09:20:12,946 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 583 transitions. Word has length 765 [2018-01-31 09:20:12,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:20:12,946 INFO L432 AbstractCegarLoop]: Abstraction has 568 states and 583 transitions. [2018-01-31 09:20:12,946 INFO L433 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-01-31 09:20:12,946 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 583 transitions. [2018-01-31 09:20:12,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 782 [2018-01-31 09:20:12,949 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:20:12,949 INFO L351 BasicCegarLoop]: trace histogram [36, 35, 34, 34, 34, 34, 34, 34, 34, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 11, 10, 10, 10, 10, 10, 10, 10, 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 09:20:12,949 INFO L371 AbstractCegarLoop]: === Iteration 38 === [mainErr0AssertViolation]=== [2018-01-31 09:20:12,950 INFO L82 PathProgramCache]: Analyzing trace with hash -352858396, now seen corresponding path program 34 times [2018-01-31 09:20:12,950 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:20:12,950 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:20:12,950 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:20:12,950 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:20:12,950 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:20:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:20:12,997 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:20:15,534 INFO L134 CoverageAnalysis]: Checked inductivity of 10966 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 6410 trivial. 0 not checked. [2018-01-31 09:20:15,535 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:20:15,535 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 09:20:15,540 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 09:20:16,793 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:20:16,801 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:20:17,002 INFO L134 CoverageAnalysis]: Checked inductivity of 10966 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 6410 trivial. 0 not checked. [2018-01-31 09:20:17,021 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:20:17,021 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 73 [2018-01-31 09:20:17,022 INFO L409 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-01-31 09:20:17,022 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-01-31 09:20:17,022 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1368, Invalid=3888, Unknown=0, NotChecked=0, Total=5256 [2018-01-31 09:20:17,022 INFO L87 Difference]: Start difference. First operand 568 states and 583 transitions. Second operand 73 states. [2018-01-31 09:20:18,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:20:18,358 INFO L93 Difference]: Finished difference Result 863 states and 893 transitions. [2018-01-31 09:20:18,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-01-31 09:20:18,363 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 781 [2018-01-31 09:20:18,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:20:18,364 INFO L225 Difference]: With dead ends: 863 [2018-01-31 09:20:18,364 INFO L226 Difference]: Without dead ends: 581 [2018-01-31 09:20:18,365 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 919 GetRequests, 780 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 09:20:18,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-01-31 09:20:18,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 576. [2018-01-31 09:20:18,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2018-01-31 09:20:18,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 591 transitions. [2018-01-31 09:20:18,369 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 591 transitions. Word has length 781 [2018-01-31 09:20:18,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:20:18,369 INFO L432 AbstractCegarLoop]: Abstraction has 576 states and 591 transitions. [2018-01-31 09:20:18,369 INFO L433 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-01-31 09:20:18,369 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 591 transitions. [2018-01-31 09:20:18,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 790 [2018-01-31 09:20:18,373 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:20:18,373 INFO L351 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 35, 35, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 11, 10, 10, 10, 10, 10, 10, 10, 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 09:20:18,373 INFO L371 AbstractCegarLoop]: === Iteration 39 === [mainErr0AssertViolation]=== [2018-01-31 09:20:18,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1327528165, now seen corresponding path program 35 times [2018-01-31 09:20:18,373 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:20:18,373 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:20:18,374 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:20:18,374 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:20:18,374 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:20:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:20:18,395 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:20:20,928 INFO L134 CoverageAnalysis]: Checked inductivity of 11240 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 6410 trivial. 0 not checked. [2018-01-31 09:20:20,928 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:20:20,928 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 09:20:20,933 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 09:20:20,949 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:20:20,950 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:20:20,951 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:20:20,953 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:20:20,954 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:20:20,956 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:20:20,958 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:20:20,961 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:20:20,964 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:20:20,968 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:20:20,973 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:20:20,979 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:20:20,987 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:20:21,003 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:20:21,016 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:20:21,022 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:20:21,060 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:20:21,103 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:20:21,132 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:20:21,155 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:20:21,167 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:20:21,200 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:20:21,231 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:20:21,257 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:20:21,301 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:20:21,375 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:20:21,808 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:20:22,399 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:20:22,995 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:20:30,691 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:20:34,756 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:20:41,973 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:20:53,996 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:21:06,017 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:21:06,023 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:21:06,040 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:21:06,655 INFO L134 CoverageAnalysis]: Checked inductivity of 11240 backedges. 2760 proven. 627 refuted. 0 times theorem prover too weak. 7853 trivial. 0 not checked. [2018-01-31 09:21:06,678 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:21:06,679 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 25] total 96 [2018-01-31 09:21:06,679 INFO L409 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-01-31 09:21:06,679 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-01-31 09:21:06,680 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1535, Invalid=7585, Unknown=0, NotChecked=0, Total=9120 [2018-01-31 09:21:06,680 INFO L87 Difference]: Start difference. First operand 576 states and 591 transitions. Second operand 96 states. [2018-01-31 09:21:09,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:21:09,160 INFO L93 Difference]: Finished difference Result 898 states and 934 transitions. [2018-01-31 09:21:09,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-01-31 09:21:09,167 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 789 [2018-01-31 09:21:09,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:21:09,169 INFO L225 Difference]: With dead ends: 898 [2018-01-31 09:21:09,169 INFO L226 Difference]: Without dead ends: 616 [2018-01-31 09:21:09,171 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 953 GetRequests, 767 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7073 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=7195, Invalid=27961, Unknown=0, NotChecked=0, Total=35156 [2018-01-31 09:21:09,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2018-01-31 09:21:09,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 599. [2018-01-31 09:21:09,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2018-01-31 09:21:09,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 615 transitions. [2018-01-31 09:21:09,176 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 615 transitions. Word has length 789 [2018-01-31 09:21:09,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:21:09,176 INFO L432 AbstractCegarLoop]: Abstraction has 599 states and 615 transitions. [2018-01-31 09:21:09,176 INFO L433 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-01-31 09:21:09,176 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 615 transitions. [2018-01-31 09:21:09,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 831 [2018-01-31 09:21:09,180 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:21:09,180 INFO L351 BasicCegarLoop]: trace histogram [39, 37, 36, 36, 36, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:21:09,180 INFO L371 AbstractCegarLoop]: === Iteration 40 === [mainErr0AssertViolation]=== [2018-01-31 09:21:09,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1332740914, now seen corresponding path program 36 times [2018-01-31 09:21:09,180 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:21:09,180 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:21:09,181 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:21:09,181 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:21:09,181 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:21:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:21:09,203 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:21:12,111 INFO L134 CoverageAnalysis]: Checked inductivity of 12662 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 7550 trivial. 0 not checked. [2018-01-31 09:21:12,111 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:21:12,111 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:21:12,125 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 09:21:12,146 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:21:12,147 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:21:12,151 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:21:12,153 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:21:12,159 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:21:12,168 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:21:12,200 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:21:12,228 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:21:12,242 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:21:12,272 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:21:12,297 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:21:12,337 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:21:12,374 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:21:12,457 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:21:12,526 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:21:12,740 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:21:12,788 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:21:13,116 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:21:13,384 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:21:13,592 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:21:13,665 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command Received shutdown request... [2018-01-31 09:21:14,491 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:21:14,632 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:21:14,635 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:21:14,643 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:21:14,667 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-01-31 09:21:14,668 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-31 09:21:14,671 WARN L185 ceAbstractionStarter]: Timeout [2018-01-31 09:21:14,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 09:21:14 BoogieIcfgContainer [2018-01-31 09:21:14,671 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-31 09:21:14,671 INFO L168 Benchmark]: Toolchain (without parser) took 155810.04 ms. Allocated memory was 148.9 MB in the beginning and 2.1 GB in the end (delta: 1.9 GB). Free memory was 114.1 MB in the beginning and 1.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 177.5 MB. Max. memory is 5.3 GB. [2018-01-31 09:21:14,672 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 148.9 MB. Free memory is still 118.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-31 09:21:14,672 INFO L168 Benchmark]: CACSL2BoogieTranslator took 111.83 ms. Allocated memory is still 148.9 MB. Free memory was 113.9 MB in the beginning and 105.2 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 5.3 GB. [2018-01-31 09:21:14,672 INFO L168 Benchmark]: Boogie Preprocessor took 19.59 ms. Allocated memory is still 148.9 MB. Free memory was 105.2 MB in the beginning and 103.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 5.3 GB. [2018-01-31 09:21:14,673 INFO L168 Benchmark]: RCFGBuilder took 437.13 ms. Allocated memory is still 148.9 MB. Free memory was 103.4 MB in the beginning and 84.4 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 5.3 GB. [2018-01-31 09:21:14,673 INFO L168 Benchmark]: TraceAbstraction took 155239.24 ms. Allocated memory was 148.9 MB in the beginning and 2.1 GB in the end (delta: 1.9 GB). Free memory was 84.2 MB in the beginning and 1.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 147.6 MB. Max. memory is 5.3 GB. [2018-01-31 09:21:14,673 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 148.9 MB. Free memory is still 118.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 111.83 ms. Allocated memory is still 148.9 MB. Free memory was 113.9 MB in the beginning and 105.2 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 19.59 ms. Allocated memory is still 148.9 MB. Free memory was 105.2 MB in the beginning and 103.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 5.3 GB. * RCFGBuilder took 437.13 ms. Allocated memory is still 148.9 MB. Free memory was 103.4 MB in the beginning and 84.4 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 155239.24 ms. Allocated memory was 148.9 MB in the beginning and 2.1 GB in the end (delta: 1.9 GB). Free memory was 84.2 MB in the beginning and 1.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 147.6 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 42]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 42). Cancelled while BasicCegarLoop was analyzing trace of length 831 with TraceHistMax 39, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 75 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 83 locations, 1 error locations. TIMEOUT Result, 155.2s OverallTime, 40 OverallIterations, 39 TraceHistogramMax, 31.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2928 SDtfs, 5132 SDslu, 80561 SDs, 0 SdLazy, 9940 SolverSat, 1066 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20153 GetRequests, 17097 SyntacticMatches, 0 SemanticMatches, 3056 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68231 ImplicationChecksByTransitivity, 45.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=599occurred in iteration=39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 39 MinimizatonAttempts, 374 StatesRemovedByMinimization, 38 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 70.4s SatisfiabilityAnalysisTime, 43.2s InterpolantComputationTime, 34787 NumberOfCodeBlocks, 33073 NumberOfCodeBlocksAsserted, 299 NumberOfCheckSat, 34711 ConstructedInterpolants, 0 QuantifiedInterpolants, 29589479 SizeOfPredicates, 879 NumberOfNonLiveVariables, 24422 ConjunctsInSsa, 928 ConjunctsInUnsatCore, 76 InterpolantComputations, 4 PerfectInterpolantSequences, 238035/328849 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sep60_true-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-31_09-21-14-678.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sep60_true-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-31_09-21-14-678.csv Completed graceful shutdown