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-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/memsafety/20051113-1.c_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cceb4a [2018-01-29 23:04:33,493 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-29 23:04:33,526 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-29 23:04:33,541 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-29 23:04:33,541 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-29 23:04:33,542 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-29 23:04:33,543 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-29 23:04:33,545 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-29 23:04:33,547 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-29 23:04:33,548 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-29 23:04:33,549 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-29 23:04:33,549 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-29 23:04:33,550 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-29 23:04:33,551 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-29 23:04:33,552 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-29 23:04:33,555 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-29 23:04:33,557 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-29 23:04:33,559 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-29 23:04:33,560 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-29 23:04:33,562 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-29 23:04:33,564 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-29 23:04:33,569 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-29 23:04:33,570 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-29 23:04:33,570 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf [2018-01-29 23:04:33,580 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-29 23:04:33,580 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-29 23:04:33,581 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-29 23:04:33,581 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-29 23:04:33,581 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-29 23:04:33,581 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-29 23:04:33,581 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-29 23:04:33,582 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-29 23:04:33,582 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-29 23:04:33,582 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-29 23:04:33,582 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-29 23:04:33,582 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-29 23:04:33,582 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-29 23:04:33,583 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-29 23:04:33,583 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-29 23:04:33,583 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-29 23:04:33,583 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-29 23:04:33,583 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-29 23:04:33,583 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-29 23:04:33,583 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-29 23:04:33,583 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-29 23:04:33,584 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-29 23:04:33,584 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-29 23:04:33,584 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-29 23:04:33,584 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-29 23:04:33,584 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-29 23:04:33,585 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-29 23:04:33,585 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-29 23:04:33,585 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-29 23:04:33,585 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-29 23:04:33,585 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-29 23:04:33,585 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-29 23:04:33,586 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-29 23:04:33,586 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-29 23:04:33,620 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-29 23:04:33,632 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-29 23:04:33,635 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-29 23:04:33,636 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-29 23:04:33,637 INFO L276 PluginConnector]: CDTParser initialized [2018-01-29 23:04:33,638 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/20051113-1.c_false-valid-memtrack.i [2018-01-29 23:04:33,793 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-29 23:04:33,799 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-29 23:04:33,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-29 23:04:33,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-29 23:04:33,805 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-29 23:04:33,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 11:04:33" (1/1) ... [2018-01-29 23:04:33,809 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1142a270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:04:33, skipping insertion in model container [2018-01-29 23:04:33,809 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 11:04:33" (1/1) ... [2018-01-29 23:04:33,822 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-29 23:04:33,861 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-29 23:04:33,987 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-29 23:04:34,011 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-29 23:04:34,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:04:34 WrapperNode [2018-01-29 23:04:34,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-29 23:04:34,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-29 23:04:34,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-29 23:04:34,022 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-29 23:04:34,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:04:34" (1/1) ... [2018-01-29 23:04:34,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:04:34" (1/1) ... [2018-01-29 23:04:34,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:04:34" (1/1) ... [2018-01-29 23:04:34,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:04:34" (1/1) ... [2018-01-29 23:04:34,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:04:34" (1/1) ... [2018-01-29 23:04:34,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:04:34" (1/1) ... [2018-01-29 23:04:34,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:04:34" (1/1) ... [2018-01-29 23:04:34,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-29 23:04:34,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-29 23:04:34,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-29 23:04:34,061 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-29 23:04:34,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:04:34" (1/1) ... No working directory specified, using /storage/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 [2018-01-29 23:04:34,107 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-29 23:04:34,108 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-29 23:04:34,108 INFO L136 BoogieDeclarations]: Found implementation of procedure Sum [2018-01-29 23:04:34,108 INFO L136 BoogieDeclarations]: Found implementation of procedure Sum2 [2018-01-29 23:04:34,108 INFO L136 BoogieDeclarations]: Found implementation of procedure dummy_abort [2018-01-29 23:04:34,108 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-29 23:04:34,108 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-29 23:04:34,108 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-29 23:04:34,108 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-29 23:04:34,108 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-29 23:04:34,108 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-29 23:04:34,109 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-01-29 23:04:34,109 INFO L136 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-01-29 23:04:34,109 INFO L128 BoogieDeclarations]: Found specification of procedure memset [2018-01-29 23:04:34,109 INFO L128 BoogieDeclarations]: Found specification of procedure Sum [2018-01-29 23:04:34,109 INFO L128 BoogieDeclarations]: Found specification of procedure Sum2 [2018-01-29 23:04:34,109 INFO L128 BoogieDeclarations]: Found specification of procedure dummy_abort [2018-01-29 23:04:34,110 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-29 23:04:34,110 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-29 23:04:34,110 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-29 23:04:34,245 WARN L455 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2018-01-29 23:04:34,432 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-29 23:04:34,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 11:04:34 BoogieIcfgContainer [2018-01-29 23:04:34,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-29 23:04:34,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-29 23:04:34,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-29 23:04:34,438 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-29 23:04:34,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.01 11:04:33" (1/3) ... [2018-01-29 23:04:34,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd06227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 11:04:34, skipping insertion in model container [2018-01-29 23:04:34,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:04:34" (2/3) ... [2018-01-29 23:04:34,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd06227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 11:04:34, skipping insertion in model container [2018-01-29 23:04:34,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 11:04:34" (3/3) ... [2018-01-29 23:04:34,442 INFO L107 eAbstractionObserver]: Analyzing ICFG 20051113-1.c_false-valid-memtrack.i [2018-01-29 23:04:34,449 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-29 23:04:34,456 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 25 error locations. [2018-01-29 23:04:34,495 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-29 23:04:34,495 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-29 23:04:34,495 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-29 23:04:34,495 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-29 23:04:34,495 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-29 23:04:34,495 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-29 23:04:34,496 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-29 23:04:34,496 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-29 23:04:34,496 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-29 23:04:34,513 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states. [2018-01-29 23:04:34,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-01-29 23:04:34,518 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:04:34,519 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:04:34,520 INFO L371 AbstractCegarLoop]: === Iteration 1 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:04:34,523 INFO L82 PathProgramCache]: Analyzing trace with hash 205931100, now seen corresponding path program 1 times [2018-01-29 23:04:34,525 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:04:34,526 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:04:34,566 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:34,566 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:04:34,566 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:34,613 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:04:34,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-29 23:04:34,678 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-29 23:04:34,678 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-29 23:04:34,680 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-29 23:04:34,690 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-29 23:04:34,691 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-29 23:04:34,693 INFO L87 Difference]: Start difference. First operand 105 states. Second operand 4 states. [2018-01-29 23:04:34,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:04:34,997 INFO L93 Difference]: Finished difference Result 149 states and 161 transitions. [2018-01-29 23:04:34,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-29 23:04:34,998 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-01-29 23:04:34,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:04:35,007 INFO L225 Difference]: With dead ends: 149 [2018-01-29 23:04:35,007 INFO L226 Difference]: Without dead ends: 94 [2018-01-29 23:04:35,010 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-29 23:04:35,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-01-29 23:04:35,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-01-29 23:04:35,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-01-29 23:04:35,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 99 transitions. [2018-01-29 23:04:35,046 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 99 transitions. Word has length 9 [2018-01-29 23:04:35,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:04:35,047 INFO L432 AbstractCegarLoop]: Abstraction has 94 states and 99 transitions. [2018-01-29 23:04:35,047 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-29 23:04:35,047 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 99 transitions. [2018-01-29 23:04:35,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-01-29 23:04:35,047 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:04:35,047 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:04:35,047 INFO L371 AbstractCegarLoop]: === Iteration 2 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:04:35,048 INFO L82 PathProgramCache]: Analyzing trace with hash 205931101, now seen corresponding path program 1 times [2018-01-29 23:04:35,048 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:04:35,048 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:04:35,049 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:35,049 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:04:35,050 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:35,065 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:04:35,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-29 23:04:35,123 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-29 23:04:35,123 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-29 23:04:35,124 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-29 23:04:35,124 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-29 23:04:35,125 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-29 23:04:35,125 INFO L87 Difference]: Start difference. First operand 94 states and 99 transitions. Second operand 4 states. [2018-01-29 23:04:35,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:04:35,294 INFO L93 Difference]: Finished difference Result 94 states and 99 transitions. [2018-01-29 23:04:35,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-29 23:04:35,294 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-01-29 23:04:35,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:04:35,295 INFO L225 Difference]: With dead ends: 94 [2018-01-29 23:04:35,295 INFO L226 Difference]: Without dead ends: 86 [2018-01-29 23:04:35,296 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-29 23:04:35,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-01-29 23:04:35,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-01-29 23:04:35,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-01-29 23:04:35,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2018-01-29 23:04:35,303 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 9 [2018-01-29 23:04:35,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:04:35,304 INFO L432 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2018-01-29 23:04:35,304 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-29 23:04:35,304 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2018-01-29 23:04:35,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-29 23:04:35,304 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:04:35,305 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:04:35,305 INFO L371 AbstractCegarLoop]: === Iteration 3 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:04:35,305 INFO L82 PathProgramCache]: Analyzing trace with hash -335392502, now seen corresponding path program 1 times [2018-01-29 23:04:35,305 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:04:35,305 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:04:35,306 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:35,306 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:04:35,306 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:35,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:35,331 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:04:35,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-29 23:04:35,395 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-29 23:04:35,396 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-29 23:04:35,396 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-29 23:04:35,396 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-29 23:04:35,396 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-29 23:04:35,396 INFO L87 Difference]: Start difference. First operand 86 states and 91 transitions. Second operand 5 states. [2018-01-29 23:04:35,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:04:35,569 INFO L93 Difference]: Finished difference Result 86 states and 91 transitions. [2018-01-29 23:04:35,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-29 23:04:35,569 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-01-29 23:04:35,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:04:35,571 INFO L225 Difference]: With dead ends: 86 [2018-01-29 23:04:35,571 INFO L226 Difference]: Without dead ends: 84 [2018-01-29 23:04:35,572 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-29 23:04:35,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-01-29 23:04:35,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-01-29 23:04:35,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-01-29 23:04:35,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 89 transitions. [2018-01-29 23:04:35,580 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 89 transitions. Word has length 30 [2018-01-29 23:04:35,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:04:35,581 INFO L432 AbstractCegarLoop]: Abstraction has 84 states and 89 transitions. [2018-01-29 23:04:35,581 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-29 23:04:35,581 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2018-01-29 23:04:35,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-29 23:04:35,581 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:04:35,582 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:04:35,582 INFO L371 AbstractCegarLoop]: === Iteration 4 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:04:35,582 INFO L82 PathProgramCache]: Analyzing trace with hash -335392501, now seen corresponding path program 1 times [2018-01-29 23:04:35,582 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:04:35,582 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:04:35,583 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:35,583 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:04:35,583 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:35,602 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:04:35,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-29 23:04:35,723 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-29 23:04:35,724 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-29 23:04:35,724 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-29 23:04:35,724 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-29 23:04:35,724 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-29 23:04:35,725 INFO L87 Difference]: Start difference. First operand 84 states and 89 transitions. Second operand 6 states. [2018-01-29 23:04:35,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:04:35,830 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2018-01-29 23:04:35,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-29 23:04:35,831 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2018-01-29 23:04:35,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:04:35,832 INFO L225 Difference]: With dead ends: 84 [2018-01-29 23:04:35,832 INFO L226 Difference]: Without dead ends: 83 [2018-01-29 23:04:35,832 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-01-29 23:04:35,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-01-29 23:04:35,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-01-29 23:04:35,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-01-29 23:04:35,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2018-01-29 23:04:35,842 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 30 [2018-01-29 23:04:35,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:04:35,843 INFO L432 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2018-01-29 23:04:35,843 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-29 23:04:35,843 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2018-01-29 23:04:35,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-29 23:04:35,844 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:04:35,844 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:04:35,844 INFO L371 AbstractCegarLoop]: === Iteration 5 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:04:35,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1584065769, now seen corresponding path program 1 times [2018-01-29 23:04:35,844 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:04:35,845 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:04:35,845 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:35,845 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:04:35,846 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:35,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:35,870 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:04:36,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-29 23:04:36,315 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-29 23:04:36,316 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-29 23:04:36,316 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-29 23:04:36,316 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-29 23:04:36,316 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-01-29 23:04:36,317 INFO L87 Difference]: Start difference. First operand 83 states and 88 transitions. Second operand 10 states. [2018-01-29 23:04:36,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:04:36,517 INFO L93 Difference]: Finished difference Result 135 states and 144 transitions. [2018-01-29 23:04:36,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-29 23:04:36,517 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2018-01-29 23:04:36,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:04:36,518 INFO L225 Difference]: With dead ends: 135 [2018-01-29 23:04:36,518 INFO L226 Difference]: Without dead ends: 92 [2018-01-29 23:04:36,519 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2018-01-29 23:04:36,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-01-29 23:04:36,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2018-01-29 23:04:36,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-01-29 23:04:36,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2018-01-29 23:04:36,529 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 33 [2018-01-29 23:04:36,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:04:36,531 INFO L432 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2018-01-29 23:04:36,531 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-29 23:04:36,531 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2018-01-29 23:04:36,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-01-29 23:04:36,532 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:04:36,533 INFO L350 BasicCegarLoop]: trace histogram [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] [2018-01-29 23:04:36,533 INFO L371 AbstractCegarLoop]: === Iteration 6 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:04:36,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1459052207, now seen corresponding path program 1 times [2018-01-29 23:04:36,533 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:04:36,533 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:04:36,534 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:36,535 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:04:36,535 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:36,555 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:04:36,721 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-29 23:04:36,722 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:04:36,722 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-29 23:04:36,727 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:04:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:36,767 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:04:36,803 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-01-29 23:04:36,837 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-29 23:04:36,837 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2018-01-29 23:04:36,838 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-29 23:04:36,838 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-29 23:04:36,838 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-01-29 23:04:36,838 INFO L87 Difference]: Start difference. First operand 88 states and 93 transitions. Second operand 11 states. [2018-01-29 23:04:37,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:04:37,125 INFO L93 Difference]: Finished difference Result 182 states and 194 transitions. [2018-01-29 23:04:37,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-29 23:04:37,125 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2018-01-29 23:04:37,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:04:37,128 INFO L225 Difference]: With dead ends: 182 [2018-01-29 23:04:37,129 INFO L226 Difference]: Without dead ends: 109 [2018-01-29 23:04:37,130 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2018-01-29 23:04:37,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-01-29 23:04:37,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 99. [2018-01-29 23:04:37,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-01-29 23:04:37,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 105 transitions. [2018-01-29 23:04:37,139 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 105 transitions. Word has length 43 [2018-01-29 23:04:37,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:04:37,140 INFO L432 AbstractCegarLoop]: Abstraction has 99 states and 105 transitions. [2018-01-29 23:04:37,140 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-29 23:04:37,140 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 105 transitions. [2018-01-29 23:04:37,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-01-29 23:04:37,141 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:04:37,141 INFO L350 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2018-01-29 23:04:37,141 INFO L371 AbstractCegarLoop]: === Iteration 7 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:04:37,141 INFO L82 PathProgramCache]: Analyzing trace with hash 55536356, now seen corresponding path program 1 times [2018-01-29 23:04:37,141 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:04:37,141 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:04:37,142 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:37,142 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:04:37,142 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:37,162 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:04:37,212 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-01-29 23:04:37,213 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-29 23:04:37,213 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-29 23:04:37,213 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-29 23:04:37,214 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-29 23:04:37,214 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-29 23:04:37,214 INFO L87 Difference]: Start difference. First operand 99 states and 105 transitions. Second operand 5 states. [2018-01-29 23:04:37,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:04:37,324 INFO L93 Difference]: Finished difference Result 99 states and 105 transitions. [2018-01-29 23:04:37,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-29 23:04:37,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2018-01-29 23:04:37,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:04:37,325 INFO L225 Difference]: With dead ends: 99 [2018-01-29 23:04:37,326 INFO L226 Difference]: Without dead ends: 97 [2018-01-29 23:04:37,326 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-29 23:04:37,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-01-29 23:04:37,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-01-29 23:04:37,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-01-29 23:04:37,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 103 transitions. [2018-01-29 23:04:37,333 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 103 transitions. Word has length 57 [2018-01-29 23:04:37,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:04:37,333 INFO L432 AbstractCegarLoop]: Abstraction has 97 states and 103 transitions. [2018-01-29 23:04:37,334 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-29 23:04:37,334 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 103 transitions. [2018-01-29 23:04:37,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-01-29 23:04:37,335 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:04:37,335 INFO L350 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2018-01-29 23:04:37,335 INFO L371 AbstractCegarLoop]: === Iteration 8 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:04:37,335 INFO L82 PathProgramCache]: Analyzing trace with hash 55536357, now seen corresponding path program 1 times [2018-01-29 23:04:37,336 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:04:37,336 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:04:37,336 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:37,336 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:04:37,336 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:37,353 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:04:37,618 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-01-29 23:04:37,618 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:04:37,618 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-29 23:04:37,624 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:04:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:37,667 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:04:37,751 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-01-29 23:04:37,784 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:04:37,784 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 14 [2018-01-29 23:04:37,785 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-29 23:04:37,785 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-29 23:04:37,785 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2018-01-29 23:04:37,785 INFO L87 Difference]: Start difference. First operand 97 states and 103 transitions. Second operand 14 states. [2018-01-29 23:04:38,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:04:38,251 INFO L93 Difference]: Finished difference Result 191 states and 203 transitions. [2018-01-29 23:04:38,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-29 23:04:38,251 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 57 [2018-01-29 23:04:38,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:04:38,252 INFO L225 Difference]: With dead ends: 191 [2018-01-29 23:04:38,252 INFO L226 Difference]: Without dead ends: 106 [2018-01-29 23:04:38,253 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 55 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2018-01-29 23:04:38,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-01-29 23:04:38,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 100. [2018-01-29 23:04:38,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-01-29 23:04:38,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 105 transitions. [2018-01-29 23:04:38,262 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 105 transitions. Word has length 57 [2018-01-29 23:04:38,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:04:38,263 INFO L432 AbstractCegarLoop]: Abstraction has 100 states and 105 transitions. [2018-01-29 23:04:38,263 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-29 23:04:38,263 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 105 transitions. [2018-01-29 23:04:38,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-01-29 23:04:38,264 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:04:38,264 INFO L350 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 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] [2018-01-29 23:04:38,264 INFO L371 AbstractCegarLoop]: === Iteration 9 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:04:38,265 INFO L82 PathProgramCache]: Analyzing trace with hash -899742681, now seen corresponding path program 1 times [2018-01-29 23:04:38,265 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:04:38,265 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:04:38,266 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:38,266 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:04:38,266 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:38,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:38,285 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:04:38,746 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-01-29 23:04:38,771 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:04:38,771 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-29 23:04:38,776 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:04:38,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:38,797 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:04:38,855 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-01-29 23:04:38,877 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:04:38,877 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 6] total 20 [2018-01-29 23:04:38,877 INFO L409 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-01-29 23:04:38,877 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-01-29 23:04:38,878 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2018-01-29 23:04:38,878 INFO L87 Difference]: Start difference. First operand 100 states and 105 transitions. Second operand 20 states. [2018-01-29 23:04:39,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:04:39,633 INFO L93 Difference]: Finished difference Result 189 states and 200 transitions. [2018-01-29 23:04:39,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-01-29 23:04:39,633 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 59 [2018-01-29 23:04:39,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:04:39,634 INFO L225 Difference]: With dead ends: 189 [2018-01-29 23:04:39,634 INFO L226 Difference]: Without dead ends: 108 [2018-01-29 23:04:39,635 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 56 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=178, Invalid=1082, Unknown=0, NotChecked=0, Total=1260 [2018-01-29 23:04:39,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-01-29 23:04:39,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 100. [2018-01-29 23:04:39,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-01-29 23:04:39,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 105 transitions. [2018-01-29 23:04:39,642 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 105 transitions. Word has length 59 [2018-01-29 23:04:39,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:04:39,642 INFO L432 AbstractCegarLoop]: Abstraction has 100 states and 105 transitions. [2018-01-29 23:04:39,642 INFO L433 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-01-29 23:04:39,642 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 105 transitions. [2018-01-29 23:04:39,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-01-29 23:04:39,643 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:04:39,644 INFO L350 BasicCegarLoop]: trace histogram [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] [2018-01-29 23:04:39,644 INFO L371 AbstractCegarLoop]: === Iteration 10 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:04:39,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1515320429, now seen corresponding path program 2 times [2018-01-29 23:04:39,644 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:04:39,644 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:04:39,645 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:39,645 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:04:39,645 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:39,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:39,662 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:04:39,933 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-01-29 23:04:39,933 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:04:39,933 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-29 23:04:39,938 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-29 23:04:39,953 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:39,955 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:04:39,959 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:04:39,980 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-29 23:04:39,982 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-29 23:04:39,994 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-29 23:04:39,994 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-29 23:04:40,398 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-01-29 23:04:40,430 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-29 23:04:40,431 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 19 [2018-01-29 23:04:40,431 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-29 23:04:40,431 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-29 23:04:40,432 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2018-01-29 23:04:40,432 INFO L87 Difference]: Start difference. First operand 100 states and 105 transitions. Second operand 19 states. [2018-01-29 23:04:41,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:04:41,061 INFO L93 Difference]: Finished difference Result 155 states and 165 transitions. [2018-01-29 23:04:41,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-29 23:04:41,061 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 73 [2018-01-29 23:04:41,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:04:41,062 INFO L225 Difference]: With dead ends: 155 [2018-01-29 23:04:41,062 INFO L226 Difference]: Without dead ends: 115 [2018-01-29 23:04:41,063 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 65 SyntacticMatches, 9 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=214, Invalid=976, Unknown=0, NotChecked=0, Total=1190 [2018-01-29 23:04:41,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-01-29 23:04:41,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 109. [2018-01-29 23:04:41,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-01-29 23:04:41,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 114 transitions. [2018-01-29 23:04:41,072 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 114 transitions. Word has length 73 [2018-01-29 23:04:41,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:04:41,073 INFO L432 AbstractCegarLoop]: Abstraction has 109 states and 114 transitions. [2018-01-29 23:04:41,073 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-29 23:04:41,073 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 114 transitions. [2018-01-29 23:04:41,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-01-29 23:04:41,075 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:04:41,075 INFO L350 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1] [2018-01-29 23:04:41,075 INFO L371 AbstractCegarLoop]: === Iteration 11 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:04:41,075 INFO L82 PathProgramCache]: Analyzing trace with hash 371973440, now seen corresponding path program 1 times [2018-01-29 23:04:41,075 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:04:41,075 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:04:41,076 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:41,076 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:04:41,076 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:41,094 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:04:41,442 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-01-29 23:04:41,442 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:04:41,442 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-29 23:04:41,447 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:04:41,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:41,479 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:04:41,552 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-01-29 23:04:41,572 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:04:41,572 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 18 [2018-01-29 23:04:41,573 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-01-29 23:04:41,573 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-01-29 23:04:41,573 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2018-01-29 23:04:41,573 INFO L87 Difference]: Start difference. First operand 109 states and 114 transitions. Second operand 18 states. [2018-01-29 23:04:41,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:04:41,831 INFO L93 Difference]: Finished difference Result 214 states and 226 transitions. [2018-01-29 23:04:41,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-29 23:04:41,832 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 86 [2018-01-29 23:04:41,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:04:41,833 INFO L225 Difference]: With dead ends: 214 [2018-01-29 23:04:41,833 INFO L226 Difference]: Without dead ends: 127 [2018-01-29 23:04:41,833 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 82 SyntacticMatches, 8 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2018-01-29 23:04:41,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-01-29 23:04:41,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 117. [2018-01-29 23:04:41,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-01-29 23:04:41,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 123 transitions. [2018-01-29 23:04:41,842 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 123 transitions. Word has length 86 [2018-01-29 23:04:41,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:04:41,842 INFO L432 AbstractCegarLoop]: Abstraction has 117 states and 123 transitions. [2018-01-29 23:04:41,843 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-01-29 23:04:41,843 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 123 transitions. [2018-01-29 23:04:41,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-01-29 23:04:41,844 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:04:41,844 INFO L350 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:04:41,844 INFO L371 AbstractCegarLoop]: === Iteration 12 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:04:41,845 INFO L82 PathProgramCache]: Analyzing trace with hash -45147985, now seen corresponding path program 1 times [2018-01-29 23:04:41,845 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:04:41,845 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:04:41,846 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:41,846 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:04:41,846 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:41,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:41,863 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:04:41,950 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-01-29 23:04:41,950 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-29 23:04:41,950 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-29 23:04:41,951 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-29 23:04:41,951 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-29 23:04:41,951 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-29 23:04:41,951 INFO L87 Difference]: Start difference. First operand 117 states and 123 transitions. Second operand 5 states. [2018-01-29 23:04:41,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:04:41,972 INFO L93 Difference]: Finished difference Result 130 states and 136 transitions. [2018-01-29 23:04:41,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-29 23:04:41,972 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2018-01-29 23:04:41,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:04:41,973 INFO L225 Difference]: With dead ends: 130 [2018-01-29 23:04:41,973 INFO L226 Difference]: Without dead ends: 125 [2018-01-29 23:04:41,974 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-29 23:04:41,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-01-29 23:04:41,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2018-01-29 23:04:41,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-01-29 23:04:41,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 129 transitions. [2018-01-29 23:04:41,981 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 129 transitions. Word has length 97 [2018-01-29 23:04:41,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:04:41,981 INFO L432 AbstractCegarLoop]: Abstraction has 123 states and 129 transitions. [2018-01-29 23:04:41,981 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-29 23:04:41,981 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 129 transitions. [2018-01-29 23:04:41,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-01-29 23:04:41,982 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:04:41,982 INFO L350 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-01-29 23:04:41,983 INFO L371 AbstractCegarLoop]: === Iteration 13 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:04:41,983 INFO L82 PathProgramCache]: Analyzing trace with hash 509296931, now seen corresponding path program 1 times [2018-01-29 23:04:41,983 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:04:41,983 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:04:41,983 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:41,984 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:04:41,984 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:41,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:41,996 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:04:42,372 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-01-29 23:04:42,373 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:04:42,373 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-29 23:04:42,378 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:04:42,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:42,420 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:04:42,508 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-01-29 23:04:42,528 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:04:42,528 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-01-29 23:04:42,529 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-29 23:04:42,529 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-29 23:04:42,529 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2018-01-29 23:04:42,529 INFO L87 Difference]: Start difference. First operand 123 states and 129 transitions. Second operand 15 states. [2018-01-29 23:04:42,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:04:42,753 INFO L93 Difference]: Finished difference Result 244 states and 258 transitions. [2018-01-29 23:04:42,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-29 23:04:42,753 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 99 [2018-01-29 23:04:42,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:04:42,754 INFO L225 Difference]: With dead ends: 244 [2018-01-29 23:04:42,754 INFO L226 Difference]: Without dead ends: 146 [2018-01-29 23:04:42,755 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2018-01-29 23:04:42,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-29 23:04:42,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 136. [2018-01-29 23:04:42,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-01-29 23:04:42,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 143 transitions. [2018-01-29 23:04:42,763 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 143 transitions. Word has length 99 [2018-01-29 23:04:42,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:04:42,763 INFO L432 AbstractCegarLoop]: Abstraction has 136 states and 143 transitions. [2018-01-29 23:04:42,763 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-29 23:04:42,764 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 143 transitions. [2018-01-29 23:04:42,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-01-29 23:04:42,765 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:04:42,765 INFO L350 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:04:42,765 INFO L371 AbstractCegarLoop]: === Iteration 14 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:04:42,765 INFO L82 PathProgramCache]: Analyzing trace with hash 508619111, now seen corresponding path program 1 times [2018-01-29 23:04:42,766 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:04:42,766 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:04:42,766 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:42,767 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:04:42,767 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:42,784 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:04:42,976 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-01-29 23:04:42,976 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:04:42,976 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-29 23:04:42,981 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:04:43,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:43,012 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:04:43,085 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-01-29 23:04:43,105 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:04:43,105 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2018-01-29 23:04:43,106 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-29 23:04:43,106 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-29 23:04:43,106 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2018-01-29 23:04:43,106 INFO L87 Difference]: Start difference. First operand 136 states and 143 transitions. Second operand 15 states. [2018-01-29 23:04:43,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:04:43,246 INFO L93 Difference]: Finished difference Result 247 states and 261 transitions. [2018-01-29 23:04:43,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-29 23:04:43,246 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 103 [2018-01-29 23:04:43,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:04:43,247 INFO L225 Difference]: With dead ends: 247 [2018-01-29 23:04:43,247 INFO L226 Difference]: Without dead ends: 135 [2018-01-29 23:04:43,247 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 98 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2018-01-29 23:04:43,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-01-29 23:04:43,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2018-01-29 23:04:43,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-01-29 23:04:43,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 139 transitions. [2018-01-29 23:04:43,254 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 139 transitions. Word has length 103 [2018-01-29 23:04:43,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:04:43,254 INFO L432 AbstractCegarLoop]: Abstraction has 133 states and 139 transitions. [2018-01-29 23:04:43,254 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-29 23:04:43,254 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 139 transitions. [2018-01-29 23:04:43,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-01-29 23:04:43,255 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:04:43,255 INFO L350 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:04:43,255 INFO L371 AbstractCegarLoop]: === Iteration 15 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:04:43,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1922516743, now seen corresponding path program 1 times [2018-01-29 23:04:43,256 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:04:43,256 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:04:43,256 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:43,256 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:04:43,257 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:43,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:43,275 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:04:43,683 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-01-29 23:04:43,684 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:04:43,684 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-29 23:04:43,690 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:04:43,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:43,722 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:04:43,828 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-01-29 23:04:43,848 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:04:43,871 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 20 [2018-01-29 23:04:43,872 INFO L409 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-01-29 23:04:43,872 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-01-29 23:04:43,872 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2018-01-29 23:04:43,872 INFO L87 Difference]: Start difference. First operand 133 states and 139 transitions. Second operand 20 states. [2018-01-29 23:04:44,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:04:44,204 INFO L93 Difference]: Finished difference Result 248 states and 260 transitions. [2018-01-29 23:04:44,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-01-29 23:04:44,204 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 113 [2018-01-29 23:04:44,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:04:44,205 INFO L225 Difference]: With dead ends: 248 [2018-01-29 23:04:44,205 INFO L226 Difference]: Without dead ends: 142 [2018-01-29 23:04:44,205 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 107 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2018-01-29 23:04:44,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-01-29 23:04:44,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 136. [2018-01-29 23:04:44,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-01-29 23:04:44,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 141 transitions. [2018-01-29 23:04:44,212 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 141 transitions. Word has length 113 [2018-01-29 23:04:44,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:04:44,213 INFO L432 AbstractCegarLoop]: Abstraction has 136 states and 141 transitions. [2018-01-29 23:04:44,213 INFO L433 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-01-29 23:04:44,213 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 141 transitions. [2018-01-29 23:04:44,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-01-29 23:04:44,213 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:04:44,214 INFO L350 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-01-29 23:04:44,214 INFO L371 AbstractCegarLoop]: === Iteration 16 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:04:44,214 INFO L82 PathProgramCache]: Analyzing trace with hash 636913648, now seen corresponding path program 2 times [2018-01-29 23:04:44,214 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:04:44,214 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:04:44,215 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:44,215 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:04:44,215 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:44,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:44,230 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:04:44,654 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 3 proven. 20 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-01-29 23:04:44,654 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:04:44,654 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-29 23:04:44,661 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-29 23:04:44,679 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:44,695 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:44,697 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:04:44,700 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:04:44,819 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2018-01-29 23:04:44,840 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:04:44,840 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 26 [2018-01-29 23:04:44,840 INFO L409 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-01-29 23:04:44,840 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-01-29 23:04:44,841 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2018-01-29 23:04:44,841 INFO L87 Difference]: Start difference. First operand 136 states and 141 transitions. Second operand 26 states. [2018-01-29 23:04:45,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:04:45,516 INFO L93 Difference]: Finished difference Result 246 states and 257 transitions. [2018-01-29 23:04:45,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-01-29 23:04:45,517 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 118 [2018-01-29 23:04:45,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:04:45,517 INFO L225 Difference]: With dead ends: 246 [2018-01-29 23:04:45,517 INFO L226 Difference]: Without dead ends: 144 [2018-01-29 23:04:45,518 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 111 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=215, Invalid=1507, Unknown=0, NotChecked=0, Total=1722 [2018-01-29 23:04:45,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-01-29 23:04:45,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 136. [2018-01-29 23:04:45,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-01-29 23:04:45,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 141 transitions. [2018-01-29 23:04:45,525 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 141 transitions. Word has length 118 [2018-01-29 23:04:45,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:04:45,525 INFO L432 AbstractCegarLoop]: Abstraction has 136 states and 141 transitions. [2018-01-29 23:04:45,525 INFO L433 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-01-29 23:04:45,525 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 141 transitions. [2018-01-29 23:04:45,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-01-29 23:04:45,526 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:04:45,527 INFO L350 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:04:45,527 INFO L371 AbstractCegarLoop]: === Iteration 17 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:04:45,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1690281823, now seen corresponding path program 2 times [2018-01-29 23:04:45,527 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:04:45,527 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:04:45,528 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:45,528 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:04:45,528 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:45,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:45,546 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:04:45,868 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-01-29 23:04:45,868 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:04:45,868 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-29 23:04:45,875 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-29 23:04:45,898 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:45,921 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:45,925 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:04:45,929 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:04:46,137 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-01-29 23:04:46,172 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:04:46,172 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2018-01-29 23:04:46,172 INFO L409 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-01-29 23:04:46,172 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-01-29 23:04:46,173 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2018-01-29 23:04:46,173 INFO L87 Difference]: Start difference. First operand 136 states and 141 transitions. Second operand 22 states. [2018-01-29 23:04:46,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:04:46,466 INFO L93 Difference]: Finished difference Result 260 states and 271 transitions. [2018-01-29 23:04:46,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-29 23:04:46,466 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 129 [2018-01-29 23:04:46,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:04:46,467 INFO L225 Difference]: With dead ends: 260 [2018-01-29 23:04:46,467 INFO L226 Difference]: Without dead ends: 157 [2018-01-29 23:04:46,467 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 121 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2018-01-29 23:04:46,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-01-29 23:04:46,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 149. [2018-01-29 23:04:46,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-01-29 23:04:46,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 154 transitions. [2018-01-29 23:04:46,476 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 154 transitions. Word has length 129 [2018-01-29 23:04:46,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:04:46,476 INFO L432 AbstractCegarLoop]: Abstraction has 149 states and 154 transitions. [2018-01-29 23:04:46,476 INFO L433 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-01-29 23:04:46,476 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 154 transitions. [2018-01-29 23:04:46,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-01-29 23:04:46,478 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:04:46,478 INFO L350 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:04:46,478 INFO L371 AbstractCegarLoop]: === Iteration 18 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:04:46,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1188075188, now seen corresponding path program 3 times [2018-01-29 23:04:46,479 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:04:46,479 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:04:46,479 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:46,480 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:04:46,480 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:46,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:46,503 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:04:46,710 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:04:46,710 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:04:46,710 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-29 23:04:46,715 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-29 23:04:46,734 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:46,744 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:46,767 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:46,781 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:46,791 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:46,800 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:46,807 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:46,822 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:46,835 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:46,891 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:46,892 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:04:46,896 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:04:46,980 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:04:47,000 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:04:47,001 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2018-01-29 23:04:47,001 INFO L409 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-01-29 23:04:47,001 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-01-29 23:04:47,001 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=334, Unknown=0, NotChecked=0, Total=552 [2018-01-29 23:04:47,002 INFO L87 Difference]: Start difference. First operand 149 states and 154 transitions. Second operand 24 states. [2018-01-29 23:04:47,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:04:47,048 INFO L93 Difference]: Finished difference Result 263 states and 273 transitions. [2018-01-29 23:04:47,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-29 23:04:47,049 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 142 [2018-01-29 23:04:47,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:04:47,050 INFO L225 Difference]: With dead ends: 263 [2018-01-29 23:04:47,050 INFO L226 Difference]: Without dead ends: 154 [2018-01-29 23:04:47,050 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=232, Invalid=368, Unknown=0, NotChecked=0, Total=600 [2018-01-29 23:04:47,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-01-29 23:04:47,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 152. [2018-01-29 23:04:47,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-01-29 23:04:47,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 157 transitions. [2018-01-29 23:04:47,056 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 157 transitions. Word has length 142 [2018-01-29 23:04:47,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:04:47,056 INFO L432 AbstractCegarLoop]: Abstraction has 152 states and 157 transitions. [2018-01-29 23:04:47,056 INFO L433 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-01-29 23:04:47,056 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 157 transitions. [2018-01-29 23:04:47,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-01-29 23:04:47,057 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:04:47,057 INFO L350 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:04:47,057 INFO L371 AbstractCegarLoop]: === Iteration 19 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:04:47,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1775126089, now seen corresponding path program 4 times [2018-01-29 23:04:47,057 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:04:47,057 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:04:47,058 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:47,058 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:04:47,058 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:47,078 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:04:47,313 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:04:47,314 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:04:47,314 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-29 23:04:47,321 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-29 23:04:47,434 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:04:47,440 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:04:47,560 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:04:47,581 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:04:47,581 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2018-01-29 23:04:47,581 INFO L409 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-01-29 23:04:47,581 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-01-29 23:04:47,582 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=394, Unknown=0, NotChecked=0, Total=650 [2018-01-29 23:04:47,582 INFO L87 Difference]: Start difference. First operand 152 states and 157 transitions. Second operand 26 states. [2018-01-29 23:04:47,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:04:47,640 INFO L93 Difference]: Finished difference Result 266 states and 276 transitions. [2018-01-29 23:04:47,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-29 23:04:47,640 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 145 [2018-01-29 23:04:47,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:04:47,641 INFO L225 Difference]: With dead ends: 266 [2018-01-29 23:04:47,641 INFO L226 Difference]: Without dead ends: 157 [2018-01-29 23:04:47,642 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=271, Invalid=431, Unknown=0, NotChecked=0, Total=702 [2018-01-29 23:04:47,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-01-29 23:04:47,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 155. [2018-01-29 23:04:47,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-01-29 23:04:47,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 160 transitions. [2018-01-29 23:04:47,651 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 160 transitions. Word has length 145 [2018-01-29 23:04:47,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:04:47,651 INFO L432 AbstractCegarLoop]: Abstraction has 155 states and 160 transitions. [2018-01-29 23:04:47,652 INFO L433 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-01-29 23:04:47,652 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 160 transitions. [2018-01-29 23:04:47,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-01-29 23:04:47,653 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:04:47,653 INFO L350 BasicCegarLoop]: trace histogram [11, 11, 11, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:04:47,653 INFO L371 AbstractCegarLoop]: === Iteration 20 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:04:47,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1501688468, now seen corresponding path program 5 times [2018-01-29 23:04:47,653 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:04:47,653 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:04:47,654 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:47,654 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:04:47,654 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:47,674 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:04:47,854 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:04:47,854 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:04:47,855 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-29 23:04:47,860 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-29 23:04:47,870 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:47,871 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:47,872 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:47,874 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:47,875 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:47,877 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:47,879 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:47,882 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:47,889 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:47,898 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:47,907 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:47,921 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:47,923 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:04:47,926 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:04:48,044 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:04:48,064 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:04:48,064 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2018-01-29 23:04:48,064 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-01-29 23:04:48,065 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-01-29 23:04:48,065 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=459, Unknown=0, NotChecked=0, Total=756 [2018-01-29 23:04:48,065 INFO L87 Difference]: Start difference. First operand 155 states and 160 transitions. Second operand 28 states. [2018-01-29 23:04:48,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:04:48,129 INFO L93 Difference]: Finished difference Result 269 states and 279 transitions. [2018-01-29 23:04:48,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-29 23:04:48,129 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 148 [2018-01-29 23:04:48,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:04:48,130 INFO L225 Difference]: With dead ends: 269 [2018-01-29 23:04:48,131 INFO L226 Difference]: Without dead ends: 160 [2018-01-29 23:04:48,131 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=313, Invalid=499, Unknown=0, NotChecked=0, Total=812 [2018-01-29 23:04:48,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-01-29 23:04:48,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2018-01-29 23:04:48,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-01-29 23:04:48,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 163 transitions. [2018-01-29 23:04:48,140 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 163 transitions. Word has length 148 [2018-01-29 23:04:48,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:04:48,141 INFO L432 AbstractCegarLoop]: Abstraction has 158 states and 163 transitions. [2018-01-29 23:04:48,141 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-01-29 23:04:48,141 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 163 transitions. [2018-01-29 23:04:48,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-01-29 23:04:48,142 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:04:48,142 INFO L350 BasicCegarLoop]: trace histogram [12, 12, 12, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:04:48,142 INFO L371 AbstractCegarLoop]: === Iteration 21 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:04:48,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1220485527, now seen corresponding path program 6 times [2018-01-29 23:04:48,143 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:04:48,143 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:04:48,144 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:48,144 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:04:48,144 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:48,164 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:04:48,398 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:04:48,398 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:04:48,398 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-29 23:04:48,403 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-29 23:04:48,421 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:04:48,428 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:04:48,436 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:04:48,446 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:04:48,466 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:04:48,474 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:04:48,482 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:04:48,499 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:04:48,523 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:04:48,565 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:04:48,575 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:04:48,595 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:04:48,635 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:04:48,636 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:04:48,640 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:04:48,750 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:04:48,771 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:04:48,771 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2018-01-29 23:04:48,771 INFO L409 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-01-29 23:04:48,771 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-01-29 23:04:48,772 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=529, Unknown=0, NotChecked=0, Total=870 [2018-01-29 23:04:48,772 INFO L87 Difference]: Start difference. First operand 158 states and 163 transitions. Second operand 30 states. [2018-01-29 23:04:48,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:04:48,848 INFO L93 Difference]: Finished difference Result 272 states and 282 transitions. [2018-01-29 23:04:48,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-29 23:04:48,848 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 151 [2018-01-29 23:04:48,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:04:48,883 INFO L225 Difference]: With dead ends: 272 [2018-01-29 23:04:48,883 INFO L226 Difference]: Without dead ends: 163 [2018-01-29 23:04:48,884 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=358, Invalid=572, Unknown=0, NotChecked=0, Total=930 [2018-01-29 23:04:48,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-01-29 23:04:48,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 161. [2018-01-29 23:04:48,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-01-29 23:04:48,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 166 transitions. [2018-01-29 23:04:48,892 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 166 transitions. Word has length 151 [2018-01-29 23:04:48,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:04:48,892 INFO L432 AbstractCegarLoop]: Abstraction has 161 states and 166 transitions. [2018-01-29 23:04:48,892 INFO L433 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-01-29 23:04:48,892 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 166 transitions. [2018-01-29 23:04:48,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-01-29 23:04:48,893 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:04:48,893 INFO L350 BasicCegarLoop]: trace histogram [13, 13, 13, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:04:48,894 INFO L371 AbstractCegarLoop]: === Iteration 22 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:04:48,894 INFO L82 PathProgramCache]: Analyzing trace with hash -66512500, now seen corresponding path program 7 times [2018-01-29 23:04:48,894 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:04:48,894 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:04:48,895 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:48,895 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:04:48,895 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:48,915 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:04:49,158 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:04:49,158 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:04:49,158 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-29 23:04:49,164 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:04:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:49,204 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:04:49,346 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:04:49,366 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:04:49,367 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2018-01-29 23:04:49,367 INFO L409 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-01-29 23:04:49,367 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-01-29 23:04:49,367 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=388, Invalid=604, Unknown=0, NotChecked=0, Total=992 [2018-01-29 23:04:49,367 INFO L87 Difference]: Start difference. First operand 161 states and 166 transitions. Second operand 32 states. [2018-01-29 23:04:49,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:04:49,445 INFO L93 Difference]: Finished difference Result 275 states and 285 transitions. [2018-01-29 23:04:49,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-01-29 23:04:49,448 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 154 [2018-01-29 23:04:49,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:04:49,449 INFO L225 Difference]: With dead ends: 275 [2018-01-29 23:04:49,449 INFO L226 Difference]: Without dead ends: 166 [2018-01-29 23:04:49,450 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=406, Invalid=650, Unknown=0, NotChecked=0, Total=1056 [2018-01-29 23:04:49,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-01-29 23:04:49,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2018-01-29 23:04:49,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-01-29 23:04:49,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 169 transitions. [2018-01-29 23:04:49,459 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 169 transitions. Word has length 154 [2018-01-29 23:04:49,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:04:49,460 INFO L432 AbstractCegarLoop]: Abstraction has 164 states and 169 transitions. [2018-01-29 23:04:49,460 INFO L433 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-01-29 23:04:49,460 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 169 transitions. [2018-01-29 23:04:49,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-01-29 23:04:49,461 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:04:49,461 INFO L350 BasicCegarLoop]: trace histogram [14, 14, 14, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:04:49,461 INFO L371 AbstractCegarLoop]: === Iteration 23 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:04:49,462 INFO L82 PathProgramCache]: Analyzing trace with hash 148316535, now seen corresponding path program 8 times [2018-01-29 23:04:49,462 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:04:49,462 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:04:49,463 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:49,463 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:04:49,463 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:49,482 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:04:49,848 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:04:49,848 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:04:49,848 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-29 23:04:49,855 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-29 23:04:49,881 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:49,912 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:49,917 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:04:49,921 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:04:50,134 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:04:50,168 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:04:50,169 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2018-01-29 23:04:50,169 INFO L409 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-01-29 23:04:50,170 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-01-29 23:04:50,170 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=438, Invalid=684, Unknown=0, NotChecked=0, Total=1122 [2018-01-29 23:04:50,170 INFO L87 Difference]: Start difference. First operand 164 states and 169 transitions. Second operand 34 states. [2018-01-29 23:04:50,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:04:50,287 INFO L93 Difference]: Finished difference Result 278 states and 288 transitions. [2018-01-29 23:04:50,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-29 23:04:50,287 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 157 [2018-01-29 23:04:50,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:04:50,288 INFO L225 Difference]: With dead ends: 278 [2018-01-29 23:04:50,288 INFO L226 Difference]: Without dead ends: 169 [2018-01-29 23:04:50,289 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=457, Invalid=733, Unknown=0, NotChecked=0, Total=1190 [2018-01-29 23:04:50,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-01-29 23:04:50,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 167. [2018-01-29 23:04:50,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-01-29 23:04:50,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 172 transitions. [2018-01-29 23:04:50,299 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 172 transitions. Word has length 157 [2018-01-29 23:04:50,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:04:50,299 INFO L432 AbstractCegarLoop]: Abstraction has 167 states and 172 transitions. [2018-01-29 23:04:50,299 INFO L433 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-01-29 23:04:50,299 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 172 transitions. [2018-01-29 23:04:50,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-01-29 23:04:50,301 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:04:50,301 INFO L350 BasicCegarLoop]: trace histogram [15, 15, 15, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:04:50,301 INFO L371 AbstractCegarLoop]: === Iteration 24 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:04:50,301 INFO L82 PathProgramCache]: Analyzing trace with hash 618827180, now seen corresponding path program 9 times [2018-01-29 23:04:50,301 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:04:50,302 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:04:50,302 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:50,302 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:04:50,303 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:50,324 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:04:50,624 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:04:50,625 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:04:50,625 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-29 23:04:50,634 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-29 23:04:50,657 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:50,678 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:50,695 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:50,710 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:50,735 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:50,743 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:50,755 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:50,768 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:50,782 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:50,849 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:50,883 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:50,907 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:50,933 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:50,954 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:50,982 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:51,007 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:51,008 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:04:51,012 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:04:51,139 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:04:51,160 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:04:51,160 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2018-01-29 23:04:51,160 INFO L409 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-01-29 23:04:51,161 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-01-29 23:04:51,161 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=491, Invalid=769, Unknown=0, NotChecked=0, Total=1260 [2018-01-29 23:04:51,161 INFO L87 Difference]: Start difference. First operand 167 states and 172 transitions. Second operand 36 states. [2018-01-29 23:04:51,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:04:51,254 INFO L93 Difference]: Finished difference Result 281 states and 291 transitions. [2018-01-29 23:04:51,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-29 23:04:51,254 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 160 [2018-01-29 23:04:51,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:04:51,255 INFO L225 Difference]: With dead ends: 281 [2018-01-29 23:04:51,255 INFO L226 Difference]: Without dead ends: 172 [2018-01-29 23:04:51,256 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=511, Invalid=821, Unknown=0, NotChecked=0, Total=1332 [2018-01-29 23:04:51,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-01-29 23:04:51,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 170. [2018-01-29 23:04:51,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-01-29 23:04:51,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 175 transitions. [2018-01-29 23:04:51,262 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 175 transitions. Word has length 160 [2018-01-29 23:04:51,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:04:51,262 INFO L432 AbstractCegarLoop]: Abstraction has 170 states and 175 transitions. [2018-01-29 23:04:51,262 INFO L433 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-01-29 23:04:51,262 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 175 transitions. [2018-01-29 23:04:51,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-01-29 23:04:51,262 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:04:51,263 INFO L350 BasicCegarLoop]: trace histogram [16, 16, 16, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:04:51,263 INFO L371 AbstractCegarLoop]: === Iteration 25 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:04:51,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1171801769, now seen corresponding path program 10 times [2018-01-29 23:04:51,263 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:04:51,263 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:04:51,264 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:51,264 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:04:51,264 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:51,280 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:04:51,589 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:04:51,596 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:04:51,596 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-29 23:04:51,601 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-29 23:04:51,716 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:04:51,721 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:04:52,030 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:04:52,064 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:04:52,064 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 38 [2018-01-29 23:04:52,065 INFO L409 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-01-29 23:04:52,065 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-01-29 23:04:52,066 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=547, Invalid=859, Unknown=0, NotChecked=0, Total=1406 [2018-01-29 23:04:52,066 INFO L87 Difference]: Start difference. First operand 170 states and 175 transitions. Second operand 38 states. [2018-01-29 23:04:52,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:04:52,182 INFO L93 Difference]: Finished difference Result 284 states and 294 transitions. [2018-01-29 23:04:52,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-01-29 23:04:52,183 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 163 [2018-01-29 23:04:52,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:04:52,183 INFO L225 Difference]: With dead ends: 284 [2018-01-29 23:04:52,183 INFO L226 Difference]: Without dead ends: 175 [2018-01-29 23:04:52,184 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=568, Invalid=914, Unknown=0, NotChecked=0, Total=1482 [2018-01-29 23:04:52,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-01-29 23:04:52,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2018-01-29 23:04:52,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-01-29 23:04:52,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 178 transitions. [2018-01-29 23:04:52,190 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 178 transitions. Word has length 163 [2018-01-29 23:04:52,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:04:52,190 INFO L432 AbstractCegarLoop]: Abstraction has 173 states and 178 transitions. [2018-01-29 23:04:52,190 INFO L433 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-01-29 23:04:52,190 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 178 transitions. [2018-01-29 23:04:52,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-01-29 23:04:52,191 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:04:52,191 INFO L350 BasicCegarLoop]: trace histogram [17, 17, 17, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:04:52,191 INFO L371 AbstractCegarLoop]: === Iteration 26 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:04:52,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1989962188, now seen corresponding path program 11 times [2018-01-29 23:04:52,191 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:04:52,192 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:04:52,192 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:52,192 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:04:52,192 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:52,205 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:04:52,597 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:04:52,597 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:04:52,597 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-29 23:04:52,603 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-29 23:04:52,612 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:52,615 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:52,617 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:52,624 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:52,626 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:52,628 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:52,632 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:52,637 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:52,643 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:52,652 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:52,657 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:52,662 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:52,677 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:52,682 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:52,692 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:52,705 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:52,727 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:52,747 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:52,750 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:04:52,754 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:04:52,929 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:04:52,950 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:04:52,950 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 40 [2018-01-29 23:04:52,951 INFO L409 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-01-29 23:04:52,951 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-01-29 23:04:52,951 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=606, Invalid=954, Unknown=0, NotChecked=0, Total=1560 [2018-01-29 23:04:52,952 INFO L87 Difference]: Start difference. First operand 173 states and 178 transitions. Second operand 40 states. [2018-01-29 23:04:53,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:04:53,055 INFO L93 Difference]: Finished difference Result 287 states and 297 transitions. [2018-01-29 23:04:53,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-29 23:04:53,056 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 166 [2018-01-29 23:04:53,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:04:53,056 INFO L225 Difference]: With dead ends: 287 [2018-01-29 23:04:53,056 INFO L226 Difference]: Without dead ends: 178 [2018-01-29 23:04:53,057 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=628, Invalid=1012, Unknown=0, NotChecked=0, Total=1640 [2018-01-29 23:04:53,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-01-29 23:04:53,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 176. [2018-01-29 23:04:53,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-01-29 23:04:53,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 181 transitions. [2018-01-29 23:04:53,063 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 181 transitions. Word has length 166 [2018-01-29 23:04:53,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:04:53,063 INFO L432 AbstractCegarLoop]: Abstraction has 176 states and 181 transitions. [2018-01-29 23:04:53,063 INFO L433 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-01-29 23:04:53,063 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 181 transitions. [2018-01-29 23:04:53,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-01-29 23:04:53,064 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:04:53,064 INFO L350 BasicCegarLoop]: trace histogram [18, 18, 18, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:04:53,064 INFO L371 AbstractCegarLoop]: === Iteration 27 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:04:53,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1172236599, now seen corresponding path program 12 times [2018-01-29 23:04:53,064 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:04:53,064 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:04:53,065 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:53,065 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:04:53,065 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:53,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:53,079 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:04:53,462 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:04:53,462 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:04:53,462 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-29 23:04:53,467 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-29 23:04:53,493 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:04:53,505 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:04:53,516 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:04:53,531 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:04:53,562 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:04:53,572 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:04:53,584 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:04:53,606 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:04:53,635 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:04:53,684 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:04:53,713 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:04:53,742 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:04:53,774 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:04:53,905 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:04:53,984 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:04:54,069 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:04:54,267 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:04:54,841 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:04:55,129 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:04:55,131 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:04:55,137 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:04:55,298 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:04:55,319 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:04:55,320 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 42 [2018-01-29 23:04:55,320 INFO L409 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-01-29 23:04:55,320 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-01-29 23:04:55,321 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=1054, Unknown=0, NotChecked=0, Total=1722 [2018-01-29 23:04:55,321 INFO L87 Difference]: Start difference. First operand 176 states and 181 transitions. Second operand 42 states. [2018-01-29 23:04:55,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:04:55,412 INFO L93 Difference]: Finished difference Result 290 states and 300 transitions. [2018-01-29 23:04:55,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-01-29 23:04:55,412 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 169 [2018-01-29 23:04:55,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:04:55,413 INFO L225 Difference]: With dead ends: 290 [2018-01-29 23:04:55,413 INFO L226 Difference]: Without dead ends: 181 [2018-01-29 23:04:55,414 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 769 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=691, Invalid=1115, Unknown=0, NotChecked=0, Total=1806 [2018-01-29 23:04:55,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-01-29 23:04:55,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 179. [2018-01-29 23:04:55,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-01-29 23:04:55,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 184 transitions. [2018-01-29 23:04:55,420 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 184 transitions. Word has length 169 [2018-01-29 23:04:55,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:04:55,420 INFO L432 AbstractCegarLoop]: Abstraction has 179 states and 184 transitions. [2018-01-29 23:04:55,420 INFO L433 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-01-29 23:04:55,420 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 184 transitions. [2018-01-29 23:04:55,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-01-29 23:04:55,420 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:04:55,421 INFO L350 BasicCegarLoop]: trace histogram [19, 19, 19, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:04:55,421 INFO L371 AbstractCegarLoop]: === Iteration 28 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:04:55,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1363717612, now seen corresponding path program 13 times [2018-01-29 23:04:55,421 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:04:55,421 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:04:55,421 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:55,422 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:04:55,422 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:55,440 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:04:55,907 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:04:55,907 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:04:55,908 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-29 23:04:55,915 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:04:55,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:55,958 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:04:56,187 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:04:56,220 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:04:56,220 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 44 [2018-01-29 23:04:56,221 INFO L409 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-01-29 23:04:56,221 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-01-29 23:04:56,222 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=733, Invalid=1159, Unknown=0, NotChecked=0, Total=1892 [2018-01-29 23:04:56,222 INFO L87 Difference]: Start difference. First operand 179 states and 184 transitions. Second operand 44 states. [2018-01-29 23:04:56,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:04:56,411 INFO L93 Difference]: Finished difference Result 293 states and 303 transitions. [2018-01-29 23:04:56,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-01-29 23:04:56,411 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 172 [2018-01-29 23:04:56,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:04:56,412 INFO L225 Difference]: With dead ends: 293 [2018-01-29 23:04:56,412 INFO L226 Difference]: Without dead ends: 184 [2018-01-29 23:04:56,413 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=757, Invalid=1223, Unknown=0, NotChecked=0, Total=1980 [2018-01-29 23:04:56,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-01-29 23:04:56,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 182. [2018-01-29 23:04:56,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-01-29 23:04:56,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 187 transitions. [2018-01-29 23:04:56,419 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 187 transitions. Word has length 172 [2018-01-29 23:04:56,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:04:56,419 INFO L432 AbstractCegarLoop]: Abstraction has 182 states and 187 transitions. [2018-01-29 23:04:56,419 INFO L433 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-01-29 23:04:56,419 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 187 transitions. [2018-01-29 23:04:56,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-01-29 23:04:56,420 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:04:56,420 INFO L350 BasicCegarLoop]: trace histogram [20, 20, 20, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:04:56,420 INFO L371 AbstractCegarLoop]: === Iteration 29 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:04:56,420 INFO L82 PathProgramCache]: Analyzing trace with hash 2058006807, now seen corresponding path program 14 times [2018-01-29 23:04:56,421 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:04:56,421 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:04:56,421 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:56,421 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:04:56,422 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:56,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:56,435 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:04:56,940 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 0 proven. 590 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:04:56,940 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:04:56,940 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-29 23:04:56,945 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-29 23:04:56,961 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:56,980 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:04:56,983 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:04:56,986 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:04:57,213 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 0 proven. 590 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:04:57,233 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:04:57,233 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 46 [2018-01-29 23:04:57,233 INFO L409 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-01-29 23:04:57,234 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-01-29 23:04:57,234 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=801, Invalid=1269, Unknown=0, NotChecked=0, Total=2070 [2018-01-29 23:04:57,234 INFO L87 Difference]: Start difference. First operand 182 states and 187 transitions. Second operand 46 states. [2018-01-29 23:04:57,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:04:57,341 INFO L93 Difference]: Finished difference Result 296 states and 306 transitions. [2018-01-29 23:04:57,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-29 23:04:57,341 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 175 [2018-01-29 23:04:57,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:04:57,342 INFO L225 Difference]: With dead ends: 296 [2018-01-29 23:04:57,342 INFO L226 Difference]: Without dead ends: 187 [2018-01-29 23:04:57,344 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 935 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=826, Invalid=1336, Unknown=0, NotChecked=0, Total=2162 [2018-01-29 23:04:57,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-01-29 23:04:57,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 185. [2018-01-29 23:04:57,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-01-29 23:04:57,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 190 transitions. [2018-01-29 23:04:57,353 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 190 transitions. Word has length 175 [2018-01-29 23:04:57,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:04:57,353 INFO L432 AbstractCegarLoop]: Abstraction has 185 states and 190 transitions. [2018-01-29 23:04:57,353 INFO L433 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-01-29 23:04:57,353 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 190 transitions. [2018-01-29 23:04:57,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-01-29 23:04:57,355 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:04:57,355 INFO L350 BasicCegarLoop]: trace histogram [21, 21, 21, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:04:57,355 INFO L371 AbstractCegarLoop]: === Iteration 30 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:04:57,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1064917516, now seen corresponding path program 15 times [2018-01-29 23:04:57,355 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:04:57,355 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:04:57,356 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:57,356 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:04:57,356 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:04:57,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:04:57,373 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:04:57,770 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:04:57,770 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:04:57,770 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-29 23:04:57,775 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-29 23:04:57,794 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:57,807 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:57,820 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:57,829 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:57,840 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:57,858 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:57,875 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:57,920 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:57,949 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:57,963 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:58,000 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:58,062 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:58,089 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:58,119 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:58,184 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:58,257 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:58,301 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:58,411 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:58,528 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:59,249 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:04:59,456 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:05:00,296 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:05:00,299 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:05:00,305 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:05:00,506 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:05:00,528 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:05:00,528 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2018-01-29 23:05:00,529 INFO L409 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-01-29 23:05:00,529 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-01-29 23:05:00,530 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=872, Invalid=1384, Unknown=0, NotChecked=0, Total=2256 [2018-01-29 23:05:00,530 INFO L87 Difference]: Start difference. First operand 185 states and 190 transitions. Second operand 48 states. [2018-01-29 23:05:00,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:05:00,620 INFO L93 Difference]: Finished difference Result 299 states and 309 transitions. [2018-01-29 23:05:00,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-01-29 23:05:00,621 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 178 [2018-01-29 23:05:00,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:05:00,621 INFO L225 Difference]: With dead ends: 299 [2018-01-29 23:05:00,622 INFO L226 Difference]: Without dead ends: 190 [2018-01-29 23:05:00,623 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=898, Invalid=1454, Unknown=0, NotChecked=0, Total=2352 [2018-01-29 23:05:00,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-01-29 23:05:00,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2018-01-29 23:05:00,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-01-29 23:05:00,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 193 transitions. [2018-01-29 23:05:00,628 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 193 transitions. Word has length 178 [2018-01-29 23:05:00,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:05:00,629 INFO L432 AbstractCegarLoop]: Abstraction has 188 states and 193 transitions. [2018-01-29 23:05:00,629 INFO L433 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-01-29 23:05:00,629 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 193 transitions. [2018-01-29 23:05:00,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-01-29 23:05:00,629 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:05:00,630 INFO L350 BasicCegarLoop]: trace histogram [22, 22, 22, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:05:00,630 INFO L371 AbstractCegarLoop]: === Iteration 31 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:05:00,630 INFO L82 PathProgramCache]: Analyzing trace with hash -323415817, now seen corresponding path program 16 times [2018-01-29 23:05:00,630 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:05:00,630 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:05:00,630 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:05:00,631 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:05:00,631 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:05:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:05:00,645 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:05:01,180 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:05:01,180 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:05:01,180 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-29 23:05:01,187 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-29 23:05:01,969 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:05:01,974 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:05:02,184 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:05:02,205 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:05:02,205 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2018-01-29 23:05:02,206 INFO L409 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-01-29 23:05:02,206 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-01-29 23:05:02,207 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=1504, Unknown=0, NotChecked=0, Total=2450 [2018-01-29 23:05:02,207 INFO L87 Difference]: Start difference. First operand 188 states and 193 transitions. Second operand 50 states. [2018-01-29 23:05:02,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:05:02,309 INFO L93 Difference]: Finished difference Result 302 states and 312 transitions. [2018-01-29 23:05:02,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-01-29 23:05:02,309 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 181 [2018-01-29 23:05:02,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:05:02,310 INFO L225 Difference]: With dead ends: 302 [2018-01-29 23:05:02,311 INFO L226 Difference]: Without dead ends: 193 [2018-01-29 23:05:02,312 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1117 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=973, Invalid=1577, Unknown=0, NotChecked=0, Total=2550 [2018-01-29 23:05:02,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-01-29 23:05:02,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 191. [2018-01-29 23:05:02,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-01-29 23:05:02,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 196 transitions. [2018-01-29 23:05:02,321 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 196 transitions. Word has length 181 [2018-01-29 23:05:02,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:05:02,322 INFO L432 AbstractCegarLoop]: Abstraction has 191 states and 196 transitions. [2018-01-29 23:05:02,322 INFO L433 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-01-29 23:05:02,322 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 196 transitions. [2018-01-29 23:05:02,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-01-29 23:05:02,323 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:05:02,323 INFO L350 BasicCegarLoop]: trace histogram [23, 23, 23, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:05:02,323 INFO L371 AbstractCegarLoop]: === Iteration 32 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:05:02,324 INFO L82 PathProgramCache]: Analyzing trace with hash 373321260, now seen corresponding path program 17 times [2018-01-29 23:05:02,324 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:05:02,324 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:05:02,325 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:05:02,325 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:05:02,325 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:05:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:05:02,346 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:05:02,718 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:05:02,718 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:05:02,718 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-29 23:05:02,724 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-29 23:05:02,733 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:02,734 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:02,734 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:02,736 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:02,737 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:02,739 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:02,741 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:02,744 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:02,748 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:02,754 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:02,757 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:02,763 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:02,776 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:02,787 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:02,798 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:02,807 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:02,822 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:02,835 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:02,859 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:02,867 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:02,881 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:02,915 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:02,962 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:03,078 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:03,081 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:05:03,086 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:05:03,323 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:05:03,344 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:05:03,344 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2018-01-29 23:05:03,345 INFO L409 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-01-29 23:05:03,345 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-01-29 23:05:03,346 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1023, Invalid=1629, Unknown=0, NotChecked=0, Total=2652 [2018-01-29 23:05:03,346 INFO L87 Difference]: Start difference. First operand 191 states and 196 transitions. Second operand 52 states. [2018-01-29 23:05:03,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:05:03,441 INFO L93 Difference]: Finished difference Result 305 states and 315 transitions. [2018-01-29 23:05:03,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-29 23:05:03,442 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 184 [2018-01-29 23:05:03,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:05:03,442 INFO L225 Difference]: With dead ends: 305 [2018-01-29 23:05:03,443 INFO L226 Difference]: Without dead ends: 196 [2018-01-29 23:05:03,444 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1214 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1051, Invalid=1705, Unknown=0, NotChecked=0, Total=2756 [2018-01-29 23:05:03,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-01-29 23:05:03,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 194. [2018-01-29 23:05:03,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-01-29 23:05:03,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 199 transitions. [2018-01-29 23:05:03,451 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 199 transitions. Word has length 184 [2018-01-29 23:05:03,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:05:03,451 INFO L432 AbstractCegarLoop]: Abstraction has 194 states and 199 transitions. [2018-01-29 23:05:03,451 INFO L433 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-01-29 23:05:03,451 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 199 transitions. [2018-01-29 23:05:03,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-01-29 23:05:03,452 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:05:03,452 INFO L350 BasicCegarLoop]: trace histogram [24, 24, 24, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:05:03,452 INFO L371 AbstractCegarLoop]: === Iteration 33 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:05:03,452 INFO L82 PathProgramCache]: Analyzing trace with hash -709359401, now seen corresponding path program 18 times [2018-01-29 23:05:03,453 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:05:03,453 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:05:03,453 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:05:03,453 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:05:03,453 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:05:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:05:03,467 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:05:03,951 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 852 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:05:03,952 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:05:03,952 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 23:05:03,958 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-29 23:05:03,977 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:03,986 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:03,993 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:04,013 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:04,038 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:04,044 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:04,070 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:04,098 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:04,116 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:04,160 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:04,204 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:04,332 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:04,374 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:04,458 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:04,607 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:05,064 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:05,353 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:05,739 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:07,013 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:07,658 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:08,774 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:09,366 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:09,519 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:09,781 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:11,629 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:11,633 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:05:11,644 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:05:11,879 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 852 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:05:11,901 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:05:11,901 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2018-01-29 23:05:11,902 INFO L409 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-01-29 23:05:11,902 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-01-29 23:05:11,902 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1103, Invalid=1759, Unknown=0, NotChecked=0, Total=2862 [2018-01-29 23:05:11,903 INFO L87 Difference]: Start difference. First operand 194 states and 199 transitions. Second operand 54 states. [2018-01-29 23:05:12,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:05:12,012 INFO L93 Difference]: Finished difference Result 308 states and 318 transitions. [2018-01-29 23:05:12,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-01-29 23:05:12,012 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 187 [2018-01-29 23:05:12,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:05:12,013 INFO L225 Difference]: With dead ends: 308 [2018-01-29 23:05:12,013 INFO L226 Difference]: Without dead ends: 199 [2018-01-29 23:05:12,014 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1315 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1132, Invalid=1838, Unknown=0, NotChecked=0, Total=2970 [2018-01-29 23:05:12,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-01-29 23:05:12,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 197. [2018-01-29 23:05:12,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-01-29 23:05:12,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 202 transitions. [2018-01-29 23:05:12,021 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 202 transitions. Word has length 187 [2018-01-29 23:05:12,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:05:12,021 INFO L432 AbstractCegarLoop]: Abstraction has 197 states and 202 transitions. [2018-01-29 23:05:12,021 INFO L433 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-01-29 23:05:12,021 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 202 transitions. [2018-01-29 23:05:12,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-01-29 23:05:12,022 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:05:12,022 INFO L350 BasicCegarLoop]: trace histogram [25, 25, 25, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:05:12,022 INFO L371 AbstractCegarLoop]: === Iteration 34 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:05:12,022 INFO L82 PathProgramCache]: Analyzing trace with hash 355461708, now seen corresponding path program 19 times [2018-01-29 23:05:12,023 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:05:12,023 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:05:12,023 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:05:12,023 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:05:12,023 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:05:12,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:05:12,037 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:05:12,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 0 proven. 925 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:05:12,729 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:05:12,730 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-29 23:05:12,734 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:05:12,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:05:12,771 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:05:13,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 0 proven. 925 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:05:13,039 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:05:13,039 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 56 [2018-01-29 23:05:13,039 INFO L409 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-01-29 23:05:13,040 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-01-29 23:05:13,040 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1186, Invalid=1894, Unknown=0, NotChecked=0, Total=3080 [2018-01-29 23:05:13,040 INFO L87 Difference]: Start difference. First operand 197 states and 202 transitions. Second operand 56 states. [2018-01-29 23:05:13,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:05:13,140 INFO L93 Difference]: Finished difference Result 311 states and 321 transitions. [2018-01-29 23:05:13,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-01-29 23:05:13,140 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 190 [2018-01-29 23:05:13,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:05:13,141 INFO L225 Difference]: With dead ends: 311 [2018-01-29 23:05:13,141 INFO L226 Difference]: Without dead ends: 202 [2018-01-29 23:05:13,142 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1420 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1216, Invalid=1976, Unknown=0, NotChecked=0, Total=3192 [2018-01-29 23:05:13,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-01-29 23:05:13,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 200. [2018-01-29 23:05:13,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-01-29 23:05:13,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 205 transitions. [2018-01-29 23:05:13,148 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 205 transitions. Word has length 190 [2018-01-29 23:05:13,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:05:13,149 INFO L432 AbstractCegarLoop]: Abstraction has 200 states and 205 transitions. [2018-01-29 23:05:13,149 INFO L433 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-01-29 23:05:13,149 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 205 transitions. [2018-01-29 23:05:13,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-01-29 23:05:13,150 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:05:13,150 INFO L350 BasicCegarLoop]: trace histogram [26, 26, 26, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:05:13,150 INFO L371 AbstractCegarLoop]: === Iteration 35 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:05:13,151 INFO L82 PathProgramCache]: Analyzing trace with hash -187328329, now seen corresponding path program 20 times [2018-01-29 23:05:13,151 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:05:13,151 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:05:13,152 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:05:13,152 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:05:13,152 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:05:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:05:13,174 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:05:13,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 0 proven. 1001 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:05:13,628 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:05:13,628 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-29 23:05:13,634 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-29 23:05:13,653 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:13,681 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:13,687 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:05:13,691 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:05:13,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 0 proven. 1001 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:05:13,994 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:05:13,994 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 58 [2018-01-29 23:05:13,994 INFO L409 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-01-29 23:05:13,994 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-01-29 23:05:13,995 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1272, Invalid=2034, Unknown=0, NotChecked=0, Total=3306 [2018-01-29 23:05:13,995 INFO L87 Difference]: Start difference. First operand 200 states and 205 transitions. Second operand 58 states. [2018-01-29 23:05:14,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:05:14,121 INFO L93 Difference]: Finished difference Result 314 states and 324 transitions. [2018-01-29 23:05:14,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-01-29 23:05:14,121 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 193 [2018-01-29 23:05:14,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:05:14,123 INFO L225 Difference]: With dead ends: 314 [2018-01-29 23:05:14,123 INFO L226 Difference]: Without dead ends: 205 [2018-01-29 23:05:14,124 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1529 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1303, Invalid=2119, Unknown=0, NotChecked=0, Total=3422 [2018-01-29 23:05:14,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-01-29 23:05:14,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 203. [2018-01-29 23:05:14,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-01-29 23:05:14,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 208 transitions. [2018-01-29 23:05:14,130 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 208 transitions. Word has length 193 [2018-01-29 23:05:14,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:05:14,131 INFO L432 AbstractCegarLoop]: Abstraction has 203 states and 208 transitions. [2018-01-29 23:05:14,131 INFO L433 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-01-29 23:05:14,131 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 208 transitions. [2018-01-29 23:05:14,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-01-29 23:05:14,132 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:05:14,133 INFO L350 BasicCegarLoop]: trace histogram [27, 27, 27, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:05:14,133 INFO L371 AbstractCegarLoop]: === Iteration 36 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:05:14,133 INFO L82 PathProgramCache]: Analyzing trace with hash 106548844, now seen corresponding path program 21 times [2018-01-29 23:05:14,133 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:05:14,133 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:05:14,134 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:05:14,134 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:05:14,134 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:05:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:05:14,149 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:05:14,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1158 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:05:14,563 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:05:14,563 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-29 23:05:14,568 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-29 23:05:14,585 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:05:14,596 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:05:14,609 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:05:14,618 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:05:14,630 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:05:14,645 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:05:14,654 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:05:14,668 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:05:14,679 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:05:14,688 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:05:14,705 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:05:14,716 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:05:14,764 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:05:14,845 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:05:14,870 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:05:14,888 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:05:14,940 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:05:14,962 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:05:15,064 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:05:15,188 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:05:15,209 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:05:15,373 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:05:16,078 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:05:16,517 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:05:17,516 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:05:18,237 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:05:20,203 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:05:21,680 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:05:21,683 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:05:21,694 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:05:22,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1158 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:05:22,060 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:05:22,061 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 60 [2018-01-29 23:05:22,061 INFO L409 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-01-29 23:05:22,061 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-01-29 23:05:22,062 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1361, Invalid=2179, Unknown=0, NotChecked=0, Total=3540 [2018-01-29 23:05:22,062 INFO L87 Difference]: Start difference. First operand 203 states and 208 transitions. Second operand 60 states. [2018-01-29 23:05:22,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:05:22,198 INFO L93 Difference]: Finished difference Result 317 states and 327 transitions. [2018-01-29 23:05:22,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-01-29 23:05:22,199 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 196 [2018-01-29 23:05:22,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:05:22,200 INFO L225 Difference]: With dead ends: 317 [2018-01-29 23:05:22,200 INFO L226 Difference]: Without dead ends: 208 [2018-01-29 23:05:22,201 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1642 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1393, Invalid=2267, Unknown=0, NotChecked=0, Total=3660 [2018-01-29 23:05:22,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-01-29 23:05:22,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 206. [2018-01-29 23:05:22,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-01-29 23:05:22,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 211 transitions. [2018-01-29 23:05:22,209 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 211 transitions. Word has length 196 [2018-01-29 23:05:22,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:05:22,210 INFO L432 AbstractCegarLoop]: Abstraction has 206 states and 211 transitions. [2018-01-29 23:05:22,210 INFO L433 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-01-29 23:05:22,210 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 211 transitions. [2018-01-29 23:05:22,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-01-29 23:05:22,210 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:05:22,211 INFO L350 BasicCegarLoop]: trace histogram [28, 28, 28, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:05:22,211 INFO L371 AbstractCegarLoop]: === Iteration 37 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:05:22,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1858060439, now seen corresponding path program 22 times [2018-01-29 23:05:22,211 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:05:22,211 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:05:22,212 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:05:22,212 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:05:22,212 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:05:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:05:22,226 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:05:22,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:05:22,757 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:05:22,757 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-29 23:05:22,762 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-29 23:05:23,444 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:05:23,450 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:05:23,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:05:23,784 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:05:23,785 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 62 [2018-01-29 23:05:23,785 INFO L409 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-01-29 23:05:23,785 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-01-29 23:05:23,786 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1453, Invalid=2329, Unknown=0, NotChecked=0, Total=3782 [2018-01-29 23:05:23,786 INFO L87 Difference]: Start difference. First operand 206 states and 211 transitions. Second operand 62 states. [2018-01-29 23:05:23,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:05:23,922 INFO L93 Difference]: Finished difference Result 320 states and 330 transitions. [2018-01-29 23:05:23,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-01-29 23:05:23,922 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 199 [2018-01-29 23:05:23,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:05:23,923 INFO L225 Difference]: With dead ends: 320 [2018-01-29 23:05:23,923 INFO L226 Difference]: Without dead ends: 211 [2018-01-29 23:05:23,924 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1759 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1486, Invalid=2420, Unknown=0, NotChecked=0, Total=3906 [2018-01-29 23:05:23,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-01-29 23:05:23,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 209. [2018-01-29 23:05:23,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-01-29 23:05:23,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 214 transitions. [2018-01-29 23:05:23,934 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 214 transitions. Word has length 199 [2018-01-29 23:05:23,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:05:23,935 INFO L432 AbstractCegarLoop]: Abstraction has 209 states and 214 transitions. [2018-01-29 23:05:23,935 INFO L433 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-01-29 23:05:23,935 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 214 transitions. [2018-01-29 23:05:23,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-01-29 23:05:23,936 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:05:23,936 INFO L350 BasicCegarLoop]: trace histogram [29, 29, 29, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:05:23,937 INFO L371 AbstractCegarLoop]: === Iteration 38 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:05:23,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1582307980, now seen corresponding path program 23 times [2018-01-29 23:05:23,937 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:05:23,937 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:05:23,938 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:05:23,938 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:05:23,938 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:05:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:05:23,960 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:05:24,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1325 backedges. 0 proven. 1247 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:05:24,415 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:05:24,415 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-29 23:05:24,419 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-29 23:05:24,428 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:24,428 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:24,429 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:24,431 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:24,432 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:24,434 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:24,436 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:24,439 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:24,444 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:24,448 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:24,452 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:24,459 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:24,466 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:24,474 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:24,483 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:24,497 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:24,506 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:24,518 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:24,532 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:24,558 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:24,572 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:24,601 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:24,648 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:24,664 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:24,767 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:24,825 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:24,861 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:24,927 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:25,018 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:25,124 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:05:25,127 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:05:25,133 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:05:25,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1325 backedges. 0 proven. 1247 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:05:25,502 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:05:25,503 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 64 [2018-01-29 23:05:25,503 INFO L409 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-01-29 23:05:25,503 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-01-29 23:05:25,503 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1548, Invalid=2484, Unknown=0, NotChecked=0, Total=4032 [2018-01-29 23:05:25,504 INFO L87 Difference]: Start difference. First operand 209 states and 214 transitions. Second operand 64 states. [2018-01-29 23:05:25,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:05:25,649 INFO L93 Difference]: Finished difference Result 323 states and 333 transitions. [2018-01-29 23:05:25,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-01-29 23:05:25,650 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 202 [2018-01-29 23:05:25,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:05:25,650 INFO L225 Difference]: With dead ends: 323 [2018-01-29 23:05:25,651 INFO L226 Difference]: Without dead ends: 214 [2018-01-29 23:05:25,651 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1880 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1582, Invalid=2578, Unknown=0, NotChecked=0, Total=4160 [2018-01-29 23:05:25,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-01-29 23:05:25,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 212. [2018-01-29 23:05:25,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-01-29 23:05:25,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 217 transitions. [2018-01-29 23:05:25,662 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 217 transitions. Word has length 202 [2018-01-29 23:05:25,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:05:25,662 INFO L432 AbstractCegarLoop]: Abstraction has 212 states and 217 transitions. [2018-01-29 23:05:25,662 INFO L433 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-01-29 23:05:25,662 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 217 transitions. [2018-01-29 23:05:25,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-01-29 23:05:25,663 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:05:25,664 INFO L350 BasicCegarLoop]: trace histogram [30, 30, 30, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:05:25,664 INFO L371 AbstractCegarLoop]: === Iteration 39 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:05:25,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1381728137, now seen corresponding path program 24 times [2018-01-29 23:05:25,664 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:05:25,664 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:05:25,665 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:05:25,665 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:05:25,665 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:05:25,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:05:25,688 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:05:26,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1413 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:05:26,161 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:05:26,161 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-29 23:05:26,166 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-29 23:05:26,184 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:26,193 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:26,200 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:26,224 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:26,243 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:26,257 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:26,279 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:26,337 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:26,372 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:26,524 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:26,628 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:26,659 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:26,955 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:27,111 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:27,332 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:27,436 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:27,540 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:27,869 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:28,345 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:28,791 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:29,190 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:30,250 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:31,062 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:32,494 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:35,515 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:39,339 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:42,664 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:48,258 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:52,555 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:05:54,536 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:06:03,623 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:06:03,632 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:06:03,662 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:06:04,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1413 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:06:04,304 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:06:04,304 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2018-01-29 23:06:04,305 INFO L409 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-01-29 23:06:04,305 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-01-29 23:06:04,305 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1646, Invalid=2644, Unknown=0, NotChecked=0, Total=4290 [2018-01-29 23:06:04,305 INFO L87 Difference]: Start difference. First operand 212 states and 217 transitions. Second operand 66 states. [2018-01-29 23:06:04,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:06:04,452 INFO L93 Difference]: Finished difference Result 326 states and 336 transitions. [2018-01-29 23:06:04,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-01-29 23:06:04,452 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 205 [2018-01-29 23:06:04,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:06:04,453 INFO L225 Difference]: With dead ends: 326 [2018-01-29 23:06:04,453 INFO L226 Difference]: Without dead ends: 217 [2018-01-29 23:06:04,454 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2005 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1681, Invalid=2741, Unknown=0, NotChecked=0, Total=4422 [2018-01-29 23:06:04,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-01-29 23:06:04,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2018-01-29 23:06:04,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-01-29 23:06:04,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 220 transitions. [2018-01-29 23:06:04,463 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 220 transitions. Word has length 205 [2018-01-29 23:06:04,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:06:04,463 INFO L432 AbstractCegarLoop]: Abstraction has 215 states and 220 transitions. [2018-01-29 23:06:04,463 INFO L433 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-01-29 23:06:04,464 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 220 transitions. [2018-01-29 23:06:04,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-01-29 23:06:04,465 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:06:04,465 INFO L350 BasicCegarLoop]: trace histogram [31, 31, 31, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:06:04,465 INFO L371 AbstractCegarLoop]: === Iteration 40 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:06:04,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1545916076, now seen corresponding path program 25 times [2018-01-29 23:06:04,466 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:06:04,466 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:06:04,466 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:06:04,466 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:06:04,466 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:06:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:06:04,489 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:06:05,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1504 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:06:05,197 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:06:05,197 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-29 23:06:05,203 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:06:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:06:05,247 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:06:05,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1504 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:06:05,746 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:06:05,746 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 68 [2018-01-29 23:06:05,746 INFO L409 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-01-29 23:06:05,747 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-01-29 23:06:05,747 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1747, Invalid=2809, Unknown=0, NotChecked=0, Total=4556 [2018-01-29 23:06:05,747 INFO L87 Difference]: Start difference. First operand 215 states and 220 transitions. Second operand 68 states. [2018-01-29 23:06:06,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:06:06,056 INFO L93 Difference]: Finished difference Result 329 states and 339 transitions. [2018-01-29 23:06:06,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-01-29 23:06:06,057 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 208 [2018-01-29 23:06:06,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:06:06,058 INFO L225 Difference]: With dead ends: 329 [2018-01-29 23:06:06,058 INFO L226 Difference]: Without dead ends: 220 [2018-01-29 23:06:06,059 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2134 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1783, Invalid=2909, Unknown=0, NotChecked=0, Total=4692 [2018-01-29 23:06:06,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-01-29 23:06:06,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 218. [2018-01-29 23:06:06,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-01-29 23:06:06,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 223 transitions. [2018-01-29 23:06:06,068 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 223 transitions. Word has length 208 [2018-01-29 23:06:06,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:06:06,069 INFO L432 AbstractCegarLoop]: Abstraction has 218 states and 223 transitions. [2018-01-29 23:06:06,069 INFO L433 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-01-29 23:06:06,069 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 223 transitions. [2018-01-29 23:06:06,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-01-29 23:06:06,070 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:06:06,070 INFO L350 BasicCegarLoop]: trace histogram [32, 32, 32, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:06:06,070 INFO L371 AbstractCegarLoop]: === Iteration 41 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:06:06,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1093785687, now seen corresponding path program 26 times [2018-01-29 23:06:06,071 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:06:06,071 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:06:06,072 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:06:06,072 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:06:06,072 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:06:06,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:06:06,098 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:06:06,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1598 backedges. 0 proven. 1520 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:06:06,747 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:06:06,747 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-29 23:06:06,752 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-29 23:06:06,776 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:06,813 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:06,817 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:06:06,821 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:06:07,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1598 backedges. 0 proven. 1520 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:06:07,455 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:06:07,455 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 70 [2018-01-29 23:06:07,455 INFO L409 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-01-29 23:06:07,456 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-01-29 23:06:07,456 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1851, Invalid=2979, Unknown=0, NotChecked=0, Total=4830 [2018-01-29 23:06:07,456 INFO L87 Difference]: Start difference. First operand 218 states and 223 transitions. Second operand 70 states. [2018-01-29 23:06:07,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:06:07,631 INFO L93 Difference]: Finished difference Result 332 states and 342 transitions. [2018-01-29 23:06:07,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-01-29 23:06:07,632 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 211 [2018-01-29 23:06:07,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:06:07,632 INFO L225 Difference]: With dead ends: 332 [2018-01-29 23:06:07,633 INFO L226 Difference]: Without dead ends: 223 [2018-01-29 23:06:07,633 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2267 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1888, Invalid=3082, Unknown=0, NotChecked=0, Total=4970 [2018-01-29 23:06:07,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-01-29 23:06:07,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 221. [2018-01-29 23:06:07,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-01-29 23:06:07,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 226 transitions. [2018-01-29 23:06:07,640 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 226 transitions. Word has length 211 [2018-01-29 23:06:07,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:06:07,640 INFO L432 AbstractCegarLoop]: Abstraction has 221 states and 226 transitions. [2018-01-29 23:06:07,640 INFO L433 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-01-29 23:06:07,640 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 226 transitions. [2018-01-29 23:06:07,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-01-29 23:06:07,641 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:06:07,642 INFO L350 BasicCegarLoop]: trace histogram [33, 33, 33, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:06:07,642 INFO L371 AbstractCegarLoop]: === Iteration 42 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:06:07,642 INFO L82 PathProgramCache]: Analyzing trace with hash 694807244, now seen corresponding path program 27 times [2018-01-29 23:06:07,642 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:06:07,642 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:06:07,642 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:06:07,643 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:06:07,643 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:06:07,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:06:07,660 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:06:08,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1695 backedges. 0 proven. 1617 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:06:08,779 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:06:08,779 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-29 23:06:08,784 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-29 23:06:08,802 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:08,813 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:08,826 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:08,835 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:08,844 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:08,853 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:08,867 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:08,880 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:08,892 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:08,903 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:08,928 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:08,968 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:09,018 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:09,052 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:09,117 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:09,254 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:09,341 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:09,363 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:09,448 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:09,572 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:09,787 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:10,722 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:12,403 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:13,452 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:15,339 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:16,479 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:18,303 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:19,247 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:19,714 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:23,279 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:26,365 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:29,957 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:34,096 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:35,928 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:35,933 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:06:35,968 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:06:36,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1695 backedges. 0 proven. 1617 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:06:36,843 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:06:36,843 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 39] total 74 [2018-01-29 23:06:36,843 INFO L409 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-01-29 23:06:36,844 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-01-29 23:06:36,844 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1962, Invalid=3440, Unknown=0, NotChecked=0, Total=5402 [2018-01-29 23:06:36,844 INFO L87 Difference]: Start difference. First operand 221 states and 226 transitions. Second operand 74 states. [2018-01-29 23:06:37,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:06:37,240 INFO L93 Difference]: Finished difference Result 335 states and 345 transitions. [2018-01-29 23:06:37,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-01-29 23:06:37,240 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 214 [2018-01-29 23:06:37,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:06:37,241 INFO L225 Difference]: With dead ends: 335 [2018-01-29 23:06:37,241 INFO L226 Difference]: Without dead ends: 226 [2018-01-29 23:06:37,241 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2509 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2004, Invalid=3696, Unknown=0, NotChecked=0, Total=5700 [2018-01-29 23:06:37,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-01-29 23:06:37,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 224. [2018-01-29 23:06:37,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-01-29 23:06:37,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 229 transitions. [2018-01-29 23:06:37,251 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 229 transitions. Word has length 214 [2018-01-29 23:06:37,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:06:37,251 INFO L432 AbstractCegarLoop]: Abstraction has 224 states and 229 transitions. [2018-01-29 23:06:37,251 INFO L433 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-01-29 23:06:37,251 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 229 transitions. [2018-01-29 23:06:37,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-01-29 23:06:37,252 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:06:37,253 INFO L350 BasicCegarLoop]: trace histogram [34, 34, 34, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:06:37,253 INFO L371 AbstractCegarLoop]: === Iteration 43 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:06:37,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1097480137, now seen corresponding path program 28 times [2018-01-29 23:06:37,253 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:06:37,253 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:06:37,254 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:06:37,254 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:06:37,254 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:06:37,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:06:37,279 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:06:38,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1795 backedges. 0 proven. 1717 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:06:38,021 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:06:38,021 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-29 23:06:38,029 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-29 23:06:39,533 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:06:39,541 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:06:40,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1795 backedges. 0 proven. 1717 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:06:40,150 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:06:40,151 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 74 [2018-01-29 23:06:40,151 INFO L409 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-01-29 23:06:40,152 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-01-29 23:06:40,152 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2068, Invalid=3334, Unknown=0, NotChecked=0, Total=5402 [2018-01-29 23:06:40,152 INFO L87 Difference]: Start difference. First operand 224 states and 229 transitions. Second operand 74 states. [2018-01-29 23:06:40,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:06:40,333 INFO L93 Difference]: Finished difference Result 338 states and 348 transitions. [2018-01-29 23:06:40,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-01-29 23:06:40,334 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 217 [2018-01-29 23:06:40,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:06:40,335 INFO L225 Difference]: With dead ends: 338 [2018-01-29 23:06:40,335 INFO L226 Difference]: Without dead ends: 229 [2018-01-29 23:06:40,336 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2545 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2107, Invalid=3443, Unknown=0, NotChecked=0, Total=5550 [2018-01-29 23:06:40,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-01-29 23:06:40,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 227. [2018-01-29 23:06:40,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-01-29 23:06:40,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 232 transitions. [2018-01-29 23:06:40,346 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 232 transitions. Word has length 217 [2018-01-29 23:06:40,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:06:40,347 INFO L432 AbstractCegarLoop]: Abstraction has 227 states and 232 transitions. [2018-01-29 23:06:40,347 INFO L433 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-01-29 23:06:40,347 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 232 transitions. [2018-01-29 23:06:40,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-01-29 23:06:40,348 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:06:40,349 INFO L350 BasicCegarLoop]: trace histogram [35, 35, 35, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:06:40,349 INFO L371 AbstractCegarLoop]: === Iteration 44 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:06:40,349 INFO L82 PathProgramCache]: Analyzing trace with hash -97423636, now seen corresponding path program 29 times [2018-01-29 23:06:40,349 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:06:40,349 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:06:40,350 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:06:40,350 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:06:40,350 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:06:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:06:40,376 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:06:41,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1898 backedges. 0 proven. 1820 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:06:41,182 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:06:41,182 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-29 23:06:41,188 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-29 23:06:41,199 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:41,200 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:41,201 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:41,203 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:41,204 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:41,206 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:41,209 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:41,212 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:41,216 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:41,225 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:41,231 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:41,237 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:41,244 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:41,252 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:41,269 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:41,290 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:41,317 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:41,326 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:41,337 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:41,351 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:41,362 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:41,420 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:41,449 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:41,464 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:41,512 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:41,529 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:41,559 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:41,702 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:41,733 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:41,781 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:41,950 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:42,004 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:42,048 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:42,245 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:42,313 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:42,408 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:42,414 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:06:42,423 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:06:43,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1898 backedges. 0 proven. 1820 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:06:43,039 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:06:43,040 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 76 [2018-01-29 23:06:43,040 INFO L409 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-01-29 23:06:43,041 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-01-29 23:06:43,041 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2181, Invalid=3519, Unknown=0, NotChecked=0, Total=5700 [2018-01-29 23:06:43,041 INFO L87 Difference]: Start difference. First operand 227 states and 232 transitions. Second operand 76 states. [2018-01-29 23:06:43,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:06:43,227 INFO L93 Difference]: Finished difference Result 341 states and 351 transitions. [2018-01-29 23:06:43,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-01-29 23:06:43,227 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 220 [2018-01-29 23:06:43,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:06:43,228 INFO L225 Difference]: With dead ends: 341 [2018-01-29 23:06:43,228 INFO L226 Difference]: Without dead ends: 232 [2018-01-29 23:06:43,229 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2690 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2221, Invalid=3631, Unknown=0, NotChecked=0, Total=5852 [2018-01-29 23:06:43,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-01-29 23:06:43,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 230. [2018-01-29 23:06:43,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-01-29 23:06:43,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 235 transitions. [2018-01-29 23:06:43,235 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 235 transitions. Word has length 220 [2018-01-29 23:06:43,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:06:43,235 INFO L432 AbstractCegarLoop]: Abstraction has 230 states and 235 transitions. [2018-01-29 23:06:43,235 INFO L433 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-01-29 23:06:43,235 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 235 transitions. [2018-01-29 23:06:43,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-01-29 23:06:43,236 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:06:43,237 INFO L350 BasicCegarLoop]: trace histogram [36, 36, 36, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:06:43,237 INFO L371 AbstractCegarLoop]: === Iteration 45 === [Sum2Err2RequiresViolation, Sum2Err0RequiresViolation, Sum2Err1RequiresViolation, Sum2Err3RequiresViolation, SumErr2RequiresViolation, SumErr3RequiresViolation, SumErr1RequiresViolation, SumErr0RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr16EnsuresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation]=== [2018-01-29 23:06:43,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1602334697, now seen corresponding path program 30 times [2018-01-29 23:06:43,237 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:06:43,237 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:06:43,238 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:06:43,238 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:06:43,238 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:06:43,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:06:43,259 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:06:44,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2004 backedges. 0 proven. 1926 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-29 23:06:44,127 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:06:44,127 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-29 23:06:44,132 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-29 23:06:44,153 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:06:44,164 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:06:44,173 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:06:44,187 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:06:44,196 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:06:44,236 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:06:44,285 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:06:44,313 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:06:44,346 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:06:44,376 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:06:44,397 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:06:44,417 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command Received shutdown request... [2018-01-29 23:06:44,518 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:06:44,556 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:06:44,575 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:06:44,671 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:06:44,763 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:06:44,820 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:06:45,735 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:06:48,021 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command Cannot interrupt operation gracefully because timeout expired. Forcing shutdown