java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 10:14:42,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 10:14:42,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 10:14:42,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 10:14:42,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 10:14:42,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 10:14:42,361 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 10:14:42,363 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 10:14:42,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 10:14:42,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 10:14:42,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 10:14:42,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 10:14:42,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 10:14:42,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 10:14:42,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 10:14:42,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 10:14:42,380 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 10:14:42,381 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 10:14:42,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 10:14:42,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 10:14:42,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 10:14:42,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 10:14:42,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 10:14:42,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 10:14:42,400 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 10:14:42,406 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 10:14:42,407 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 10:14:42,408 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 10:14:42,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 10:14:42,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 10:14:42,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 10:14:42,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 10:14:42,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 10:14:42,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 10:14:42,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 10:14:42,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 10:14:42,413 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-08 10:14:42,427 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 10:14:42,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 10:14:42,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 10:14:42,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 10:14:42,429 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 10:14:42,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 10:14:42,430 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 10:14:42,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 10:14:42,430 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 10:14:42,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 10:14:42,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 10:14:42,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 10:14:42,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 10:14:42,431 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 10:14:42,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 10:14:42,432 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 10:14:42,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 10:14:42,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 10:14:42,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 10:14:42,433 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 10:14:42,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 10:14:42,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 10:14:42,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 10:14:42,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 10:14:42,434 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 10:14:42,434 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 10:14:42,434 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 10:14:42,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 10:14:42,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 10:14:42,464 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 10:14:42,484 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 10:14:42,487 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 10:14:42,489 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 10:14:42,489 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 10:14:42,490 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2019-09-08 10:14:42,555 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b3509d24/f93fe797ea444fcca73263f0147334b4/FLAG844414c41 [2019-09-08 10:14:43,057 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 10:14:43,058 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2019-09-08 10:14:43,067 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b3509d24/f93fe797ea444fcca73263f0147334b4/FLAG844414c41 [2019-09-08 10:14:43,404 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b3509d24/f93fe797ea444fcca73263f0147334b4 [2019-09-08 10:14:43,417 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 10:14:43,418 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 10:14:43,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 10:14:43,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 10:14:43,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 10:14:43,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 10:14:43" (1/1) ... [2019-09-08 10:14:43,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c5735c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 10:14:43, skipping insertion in model container [2019-09-08 10:14:43,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 10:14:43" (1/1) ... [2019-09-08 10:14:43,434 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 10:14:43,485 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 10:14:43,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 10:14:43,770 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 10:14:43,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 10:14:43,936 INFO L192 MainTranslator]: Completed translation [2019-09-08 10:14:43,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 10:14:43 WrapperNode [2019-09-08 10:14:43,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 10:14:43,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 10:14:43,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 10:14:43,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 10:14:43,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 10:14:43" (1/1) ... [2019-09-08 10:14:43,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 10:14:43" (1/1) ... [2019-09-08 10:14:43,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 10:14:43" (1/1) ... [2019-09-08 10:14:43,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 10:14:43" (1/1) ... [2019-09-08 10:14:43,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 10:14:43" (1/1) ... [2019-09-08 10:14:43,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 10:14:43" (1/1) ... [2019-09-08 10:14:43,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 10:14:43" (1/1) ... [2019-09-08 10:14:44,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 10:14:44,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 10:14:44,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 10:14:44,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 10:14:44,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 10:14:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 10:14:44,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 10:14:44,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 10:14:44,075 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 10:14:44,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 10:14:44,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-08 10:14:44,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-08 10:14:44,076 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-09-08 10:14:44,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-08 10:14:44,077 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-09-08 10:14:44,077 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-09-08 10:14:44,078 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-09-08 10:14:44,078 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-09-08 10:14:44,078 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-09-08 10:14:44,079 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-09-08 10:14:44,079 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-09-08 10:14:44,080 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 10:14:44,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 10:14:44,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 10:14:44,838 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 10:14:44,839 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-08 10:14:44,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 10:14:44 BoogieIcfgContainer [2019-09-08 10:14:44,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 10:14:44,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 10:14:44,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 10:14:44,843 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 10:14:44,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 10:14:43" (1/3) ... [2019-09-08 10:14:44,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b705cf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 10:14:44, skipping insertion in model container [2019-09-08 10:14:44,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 10:14:43" (2/3) ... [2019-09-08 10:14:44,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b705cf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 10:14:44, skipping insertion in model container [2019-09-08 10:14:44,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 10:14:44" (3/3) ... [2019-09-08 10:14:44,846 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2019-09-08 10:14:44,854 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 10:14:44,862 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 10:14:44,878 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 10:14:44,909 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 10:14:44,910 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 10:14:44,910 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 10:14:44,911 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 10:14:44,911 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 10:14:44,911 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 10:14:44,911 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 10:14:44,911 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 10:14:44,912 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 10:14:44,933 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2019-09-08 10:14:44,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-09-08 10:14:44,942 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:14:44,943 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 10:14:44,945 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:14:44,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:14:44,951 INFO L82 PathProgramCache]: Analyzing trace with hash -60281297, now seen corresponding path program 1 times [2019-09-08 10:14:44,953 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:14:44,954 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:14:45,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:14:45,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:14:45,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:14:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:14:45,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 10:14:45,340 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:14:45,341 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 10:14:45,345 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 10:14:45,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 10:14:45,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 10:14:45,362 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 3 states. [2019-09-08 10:14:45,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:14:45,437 INFO L93 Difference]: Finished difference Result 206 states and 325 transitions. [2019-09-08 10:14:45,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 10:14:45,439 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2019-09-08 10:14:45,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:14:45,452 INFO L225 Difference]: With dead ends: 206 [2019-09-08 10:14:45,452 INFO L226 Difference]: Without dead ends: 132 [2019-09-08 10:14:45,456 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 10:14:45,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2019-09-08 10:14:45,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2019-09-08 10:14:45,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2019-09-08 10:14:45,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 192 transitions. [2019-09-08 10:14:45,547 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 192 transitions. Word has length 41 [2019-09-08 10:14:45,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:14:45,548 INFO L475 AbstractCegarLoop]: Abstraction has 130 states and 192 transitions. [2019-09-08 10:14:45,548 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 10:14:45,550 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 192 transitions. [2019-09-08 10:14:45,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-09-08 10:14:45,554 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:14:45,554 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 10:14:45,555 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:14:45,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:14:45,556 INFO L82 PathProgramCache]: Analyzing trace with hash 213438414, now seen corresponding path program 1 times [2019-09-08 10:14:45,556 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:14:45,557 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:14:45,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:14:45,561 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:14:45,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:14:45,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:14:45,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 10:14:45,685 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:14:45,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 10:14:45,688 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 10:14:45,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 10:14:45,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 10:14:45,689 INFO L87 Difference]: Start difference. First operand 130 states and 192 transitions. Second operand 3 states. [2019-09-08 10:14:45,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:14:45,733 INFO L93 Difference]: Finished difference Result 310 states and 476 transitions. [2019-09-08 10:14:45,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 10:14:45,733 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2019-09-08 10:14:45,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:14:45,736 INFO L225 Difference]: With dead ends: 310 [2019-09-08 10:14:45,736 INFO L226 Difference]: Without dead ends: 204 [2019-09-08 10:14:45,738 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 10:14:45,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2019-09-08 10:14:45,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 202. [2019-09-08 10:14:45,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2019-09-08 10:14:45,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 305 transitions. [2019-09-08 10:14:45,768 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 305 transitions. Word has length 42 [2019-09-08 10:14:45,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:14:45,768 INFO L475 AbstractCegarLoop]: Abstraction has 202 states and 305 transitions. [2019-09-08 10:14:45,769 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 10:14:45,769 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 305 transitions. [2019-09-08 10:14:45,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-09-08 10:14:45,770 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:14:45,771 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 10:14:45,771 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:14:45,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:14:45,771 INFO L82 PathProgramCache]: Analyzing trace with hash -511864306, now seen corresponding path program 1 times [2019-09-08 10:14:45,772 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:14:45,773 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:14:45,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:14:45,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:14:45,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:14:45,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:14:45,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 10:14:45,867 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:14:45,868 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 10:14:45,869 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 10:14:45,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 10:14:45,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 10:14:45,870 INFO L87 Difference]: Start difference. First operand 202 states and 305 transitions. Second operand 3 states. [2019-09-08 10:14:45,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:14:45,936 INFO L93 Difference]: Finished difference Result 494 states and 763 transitions. [2019-09-08 10:14:45,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 10:14:45,940 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2019-09-08 10:14:45,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:14:45,946 INFO L225 Difference]: With dead ends: 494 [2019-09-08 10:14:45,948 INFO L226 Difference]: Without dead ends: 316 [2019-09-08 10:14:45,952 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 10:14:45,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2019-09-08 10:14:45,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 314. [2019-09-08 10:14:46,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2019-09-08 10:14:46,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 477 transitions. [2019-09-08 10:14:46,002 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 477 transitions. Word has length 43 [2019-09-08 10:14:46,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:14:46,003 INFO L475 AbstractCegarLoop]: Abstraction has 314 states and 477 transitions. [2019-09-08 10:14:46,003 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 10:14:46,003 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 477 transitions. [2019-09-08 10:14:46,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-09-08 10:14:46,004 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:14:46,005 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 10:14:46,005 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:14:46,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:14:46,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1963926839, now seen corresponding path program 1 times [2019-09-08 10:14:46,006 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:14:46,006 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:14:46,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:14:46,009 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:14:46,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:14:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:14:46,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 10:14:46,151 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:14:46,151 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 10:14:46,152 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 10:14:46,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 10:14:46,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 10:14:46,153 INFO L87 Difference]: Start difference. First operand 314 states and 477 transitions. Second operand 5 states. [2019-09-08 10:14:46,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:14:46,377 INFO L93 Difference]: Finished difference Result 1474 states and 2289 transitions. [2019-09-08 10:14:46,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 10:14:46,378 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2019-09-08 10:14:46,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:14:46,390 INFO L225 Difference]: With dead ends: 1474 [2019-09-08 10:14:46,391 INFO L226 Difference]: Without dead ends: 1184 [2019-09-08 10:14:46,399 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-09-08 10:14:46,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2019-09-08 10:14:46,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 602. [2019-09-08 10:14:46,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2019-09-08 10:14:46,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 913 transitions. [2019-09-08 10:14:46,467 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 913 transitions. Word has length 44 [2019-09-08 10:14:46,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:14:46,468 INFO L475 AbstractCegarLoop]: Abstraction has 602 states and 913 transitions. [2019-09-08 10:14:46,468 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 10:14:46,468 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 913 transitions. [2019-09-08 10:14:46,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-09-08 10:14:46,478 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:14:46,479 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 10:14:46,479 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:14:46,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:14:46,479 INFO L82 PathProgramCache]: Analyzing trace with hash 733657067, now seen corresponding path program 1 times [2019-09-08 10:14:46,480 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:14:46,480 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:14:46,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:14:46,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:14:46,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:14:46,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:14:46,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 10:14:46,598 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:14:46,598 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 10:14:46,599 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 10:14:46,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 10:14:46,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-09-08 10:14:46,600 INFO L87 Difference]: Start difference. First operand 602 states and 913 transitions. Second operand 5 states. [2019-09-08 10:14:46,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:14:46,788 INFO L93 Difference]: Finished difference Result 2072 states and 3148 transitions. [2019-09-08 10:14:46,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 10:14:46,789 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2019-09-08 10:14:46,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:14:46,798 INFO L225 Difference]: With dead ends: 2072 [2019-09-08 10:14:46,798 INFO L226 Difference]: Without dead ends: 1494 [2019-09-08 10:14:46,800 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-09-08 10:14:46,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2019-09-08 10:14:46,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1490. [2019-09-08 10:14:46,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1490 states. [2019-09-08 10:14:46,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 2241 transitions. [2019-09-08 10:14:46,915 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 2241 transitions. Word has length 45 [2019-09-08 10:14:46,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:14:46,915 INFO L475 AbstractCegarLoop]: Abstraction has 1490 states and 2241 transitions. [2019-09-08 10:14:46,915 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 10:14:46,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 2241 transitions. [2019-09-08 10:14:46,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-09-08 10:14:46,918 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:14:46,919 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 10:14:46,919 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:14:46,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:14:46,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1649759948, now seen corresponding path program 1 times [2019-09-08 10:14:46,920 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:14:46,920 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:14:46,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:14:46,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:14:46,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:14:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:14:47,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 10:14:47,013 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:14:47,013 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 10:14:47,014 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 10:14:47,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 10:14:47,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 10:14:47,015 INFO L87 Difference]: Start difference. First operand 1490 states and 2241 transitions. Second operand 5 states. [2019-09-08 10:14:47,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:14:47,428 INFO L93 Difference]: Finished difference Result 4422 states and 6675 transitions. [2019-09-08 10:14:47,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 10:14:47,429 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2019-09-08 10:14:47,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:14:47,446 INFO L225 Difference]: With dead ends: 4422 [2019-09-08 10:14:47,446 INFO L226 Difference]: Without dead ends: 2956 [2019-09-08 10:14:47,450 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-09-08 10:14:47,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2019-09-08 10:14:47,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 2954. [2019-09-08 10:14:47,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2954 states. [2019-09-08 10:14:47,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2954 states to 2954 states and 4417 transitions. [2019-09-08 10:14:47,666 INFO L78 Accepts]: Start accepts. Automaton has 2954 states and 4417 transitions. Word has length 47 [2019-09-08 10:14:47,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:14:47,667 INFO L475 AbstractCegarLoop]: Abstraction has 2954 states and 4417 transitions. [2019-09-08 10:14:47,667 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 10:14:47,667 INFO L276 IsEmpty]: Start isEmpty. Operand 2954 states and 4417 transitions. [2019-09-08 10:14:47,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-09-08 10:14:47,670 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:14:47,670 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 10:14:47,670 INFO L418 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:14:47,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:14:47,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1830795353, now seen corresponding path program 1 times [2019-09-08 10:14:47,671 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:14:47,671 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:14:47,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:14:47,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:14:47,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:14:47,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:14:47,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 10:14:47,797 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:14:47,797 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 10:14:47,798 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 10:14:47,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 10:14:47,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 10:14:47,798 INFO L87 Difference]: Start difference. First operand 2954 states and 4417 transitions. Second operand 5 states. [2019-09-08 10:14:48,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:14:48,195 INFO L93 Difference]: Finished difference Result 6076 states and 9002 transitions. [2019-09-08 10:14:48,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-08 10:14:48,195 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2019-09-08 10:14:48,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:14:48,225 INFO L225 Difference]: With dead ends: 6076 [2019-09-08 10:14:48,226 INFO L226 Difference]: Without dead ends: 6074 [2019-09-08 10:14:48,228 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-08 10:14:48,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6074 states. [2019-09-08 10:14:48,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6074 to 3146. [2019-09-08 10:14:48,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3146 states. [2019-09-08 10:14:48,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3146 states to 3146 states and 4609 transitions. [2019-09-08 10:14:48,517 INFO L78 Accepts]: Start accepts. Automaton has 3146 states and 4609 transitions. Word has length 47 [2019-09-08 10:14:48,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:14:48,517 INFO L475 AbstractCegarLoop]: Abstraction has 3146 states and 4609 transitions. [2019-09-08 10:14:48,517 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 10:14:48,517 INFO L276 IsEmpty]: Start isEmpty. Operand 3146 states and 4609 transitions. [2019-09-08 10:14:48,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-09-08 10:14:48,519 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:14:48,520 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 10:14:48,520 INFO L418 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:14:48,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:14:48,521 INFO L82 PathProgramCache]: Analyzing trace with hash 929700792, now seen corresponding path program 1 times [2019-09-08 10:14:48,521 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:14:48,521 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:14:48,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:14:48,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:14:48,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:14:48,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:14:48,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 10:14:48,628 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:14:48,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 10:14:48,629 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 10:14:48,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 10:14:48,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 10:14:48,630 INFO L87 Difference]: Start difference. First operand 3146 states and 4609 transitions. Second operand 3 states. [2019-09-08 10:14:48,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:14:48,965 INFO L93 Difference]: Finished difference Result 6940 states and 10149 transitions. [2019-09-08 10:14:48,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 10:14:48,966 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2019-09-08 10:14:48,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:14:48,992 INFO L225 Difference]: With dead ends: 6940 [2019-09-08 10:14:48,993 INFO L226 Difference]: Without dead ends: 3818 [2019-09-08 10:14:49,001 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 10:14:49,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3818 states. [2019-09-08 10:14:49,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3818 to 3816. [2019-09-08 10:14:49,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3816 states. [2019-09-08 10:14:49,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3816 states to 3816 states and 5543 transitions. [2019-09-08 10:14:49,359 INFO L78 Accepts]: Start accepts. Automaton has 3816 states and 5543 transitions. Word has length 48 [2019-09-08 10:14:49,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:14:49,361 INFO L475 AbstractCegarLoop]: Abstraction has 3816 states and 5543 transitions. [2019-09-08 10:14:49,361 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 10:14:49,361 INFO L276 IsEmpty]: Start isEmpty. Operand 3816 states and 5543 transitions. [2019-09-08 10:14:49,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-08 10:14:49,365 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:14:49,366 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1] [2019-09-08 10:14:49,366 INFO L418 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:14:49,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:14:49,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1357425763, now seen corresponding path program 1 times [2019-09-08 10:14:49,367 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:14:49,367 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:14:49,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:14:49,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:14:49,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:14:49,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:14:49,480 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-08 10:14:49,481 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 10:14:49,481 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 10:14:49,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 10:14:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:14:49,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 24 conjunts are in the unsatisfiable core [2019-09-08 10:14:49,657 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 10:14:49,774 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-08 10:14:49,787 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 10:14:49,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8] total 9 [2019-09-08 10:14:49,788 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 10:14:49,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 10:14:49,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2019-09-08 10:14:49,789 INFO L87 Difference]: Start difference. First operand 3816 states and 5543 transitions. Second operand 9 states. [2019-09-08 10:14:50,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:14:50,408 INFO L93 Difference]: Finished difference Result 9762 states and 14195 transitions. [2019-09-08 10:14:50,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 10:14:50,409 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2019-09-08 10:14:50,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:14:50,447 INFO L225 Difference]: With dead ends: 9762 [2019-09-08 10:14:50,447 INFO L226 Difference]: Without dead ends: 6640 [2019-09-08 10:14:50,459 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2019-09-08 10:14:50,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6640 states. [2019-09-08 10:14:51,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6640 to 6420. [2019-09-08 10:14:51,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6420 states. [2019-09-08 10:14:51,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6420 states to 6420 states and 9219 transitions. [2019-09-08 10:14:51,249 INFO L78 Accepts]: Start accepts. Automaton has 6420 states and 9219 transitions. Word has length 65 [2019-09-08 10:14:51,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:14:51,249 INFO L475 AbstractCegarLoop]: Abstraction has 6420 states and 9219 transitions. [2019-09-08 10:14:51,249 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 10:14:51,249 INFO L276 IsEmpty]: Start isEmpty. Operand 6420 states and 9219 transitions. [2019-09-08 10:14:51,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-08 10:14:51,253 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:14:51,253 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2019-09-08 10:14:51,253 INFO L418 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:14:51,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:14:51,254 INFO L82 PathProgramCache]: Analyzing trace with hash -157142588, now seen corresponding path program 1 times [2019-09-08 10:14:51,254 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:14:51,254 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:14:51,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:14:51,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:14:51,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:14:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:14:51,382 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 10:14:51,382 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 10:14:51,382 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 10:14:51,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:14:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:14:51,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-08 10:14:51,519 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 10:14:51,601 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 10:14:51,612 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 10:14:51,613 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2019-09-08 10:14:51,614 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-08 10:14:51,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-08 10:14:51,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-09-08 10:14:51,619 INFO L87 Difference]: Start difference. First operand 6420 states and 9219 transitions. Second operand 11 states. [2019-09-08 10:14:52,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:14:52,806 INFO L93 Difference]: Finished difference Result 15008 states and 21386 transitions. [2019-09-08 10:14:52,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-08 10:14:52,807 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 66 [2019-09-08 10:14:52,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:14:52,857 INFO L225 Difference]: With dead ends: 15008 [2019-09-08 10:14:52,857 INFO L226 Difference]: Without dead ends: 10548 [2019-09-08 10:14:52,870 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2019-09-08 10:14:52,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10548 states. [2019-09-08 10:14:53,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10548 to 6780. [2019-09-08 10:14:53,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6780 states. [2019-09-08 10:14:53,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6780 states to 6780 states and 9628 transitions. [2019-09-08 10:14:53,548 INFO L78 Accepts]: Start accepts. Automaton has 6780 states and 9628 transitions. Word has length 66 [2019-09-08 10:14:53,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:14:53,549 INFO L475 AbstractCegarLoop]: Abstraction has 6780 states and 9628 transitions. [2019-09-08 10:14:53,549 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-08 10:14:53,549 INFO L276 IsEmpty]: Start isEmpty. Operand 6780 states and 9628 transitions. [2019-09-08 10:14:53,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-08 10:14:53,552 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:14:53,552 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2019-09-08 10:14:53,553 INFO L418 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:14:53,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:14:53,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1635593437, now seen corresponding path program 1 times [2019-09-08 10:14:53,553 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:14:53,553 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:14:53,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:14:53,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:14:53,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:14:53,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:14:53,599 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 10:14:53,600 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:14:53,600 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 10:14:53,600 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 10:14:53,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 10:14:53,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 10:14:53,601 INFO L87 Difference]: Start difference. First operand 6780 states and 9628 transitions. Second operand 3 states. [2019-09-08 10:14:54,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:14:54,214 INFO L93 Difference]: Finished difference Result 14743 states and 20888 transitions. [2019-09-08 10:14:54,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 10:14:54,215 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2019-09-08 10:14:54,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:14:54,240 INFO L225 Difference]: With dead ends: 14743 [2019-09-08 10:14:54,240 INFO L226 Difference]: Without dead ends: 9813 [2019-09-08 10:14:54,252 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 10:14:54,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9813 states. [2019-09-08 10:14:54,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9813 to 9263. [2019-09-08 10:14:54,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9263 states. [2019-09-08 10:14:55,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9263 states to 9263 states and 12969 transitions. [2019-09-08 10:14:55,027 INFO L78 Accepts]: Start accepts. Automaton has 9263 states and 12969 transitions. Word has length 66 [2019-09-08 10:14:55,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:14:55,027 INFO L475 AbstractCegarLoop]: Abstraction has 9263 states and 12969 transitions. [2019-09-08 10:14:55,027 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 10:14:55,028 INFO L276 IsEmpty]: Start isEmpty. Operand 9263 states and 12969 transitions. [2019-09-08 10:14:55,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-08 10:14:55,033 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:14:55,033 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2019-09-08 10:14:55,034 INFO L418 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:14:55,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:14:55,034 INFO L82 PathProgramCache]: Analyzing trace with hash -2122429268, now seen corresponding path program 1 times [2019-09-08 10:14:55,035 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:14:55,035 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:14:55,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:14:55,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:14:55,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:14:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:14:55,090 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 10:14:55,090 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:14:55,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 10:14:55,091 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 10:14:55,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 10:14:55,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 10:14:55,092 INFO L87 Difference]: Start difference. First operand 9263 states and 12969 transitions. Second operand 3 states. [2019-09-08 10:14:56,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:14:56,150 INFO L93 Difference]: Finished difference Result 15346 states and 21338 transitions. [2019-09-08 10:14:56,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 10:14:56,151 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2019-09-08 10:14:56,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:14:56,181 INFO L225 Difference]: With dead ends: 15346 [2019-09-08 10:14:56,181 INFO L226 Difference]: Without dead ends: 9799 [2019-09-08 10:14:56,195 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 10:14:56,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9799 states. [2019-09-08 10:14:57,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9799 to 9382. [2019-09-08 10:14:57,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9382 states. [2019-09-08 10:14:57,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9382 states to 9382 states and 12878 transitions. [2019-09-08 10:14:57,369 INFO L78 Accepts]: Start accepts. Automaton has 9382 states and 12878 transitions. Word has length 66 [2019-09-08 10:14:57,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:14:57,370 INFO L475 AbstractCegarLoop]: Abstraction has 9382 states and 12878 transitions. [2019-09-08 10:14:57,370 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 10:14:57,370 INFO L276 IsEmpty]: Start isEmpty. Operand 9382 states and 12878 transitions. [2019-09-08 10:14:57,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-08 10:14:57,373 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:14:57,374 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2019-09-08 10:14:57,374 INFO L418 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:14:57,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:14:57,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1091113286, now seen corresponding path program 1 times [2019-09-08 10:14:57,374 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:14:57,375 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:14:57,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:14:57,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:14:57,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:14:57,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:14:57,443 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-08 10:14:57,444 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:14:57,444 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 10:14:57,444 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 10:14:57,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 10:14:57,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-09-08 10:14:57,445 INFO L87 Difference]: Start difference. First operand 9382 states and 12878 transitions. Second operand 6 states. [2019-09-08 10:14:58,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:14:58,987 INFO L93 Difference]: Finished difference Result 32191 states and 43988 transitions. [2019-09-08 10:14:58,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 10:14:58,988 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2019-09-08 10:14:58,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:14:59,048 INFO L225 Difference]: With dead ends: 32191 [2019-09-08 10:14:59,048 INFO L226 Difference]: Without dead ends: 22858 [2019-09-08 10:14:59,075 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-09-08 10:14:59,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22858 states. [2019-09-08 10:15:00,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22858 to 22192. [2019-09-08 10:15:00,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22192 states. [2019-09-08 10:15:00,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22192 states to 22192 states and 30200 transitions. [2019-09-08 10:15:00,855 INFO L78 Accepts]: Start accepts. Automaton has 22192 states and 30200 transitions. Word has length 66 [2019-09-08 10:15:00,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:15:00,855 INFO L475 AbstractCegarLoop]: Abstraction has 22192 states and 30200 transitions. [2019-09-08 10:15:00,855 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 10:15:00,856 INFO L276 IsEmpty]: Start isEmpty. Operand 22192 states and 30200 transitions. [2019-09-08 10:15:00,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-08 10:15:00,860 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:15:00,860 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2019-09-08 10:15:00,861 INFO L418 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:15:00,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:15:00,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1248061153, now seen corresponding path program 1 times [2019-09-08 10:15:00,861 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:15:00,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:15:00,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:15:00,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:15:00,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:15:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:15:00,944 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 10:15:00,944 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 10:15:00,944 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 10:15:00,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 10:15:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:15:01,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-08 10:15:01,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 10:15:01,132 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (4)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 10:15:01,149 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 10:15:01,149 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2019-09-08 10:15:01,149 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-08 10:15:01,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-08 10:15:01,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-09-08 10:15:01,152 INFO L87 Difference]: Start difference. First operand 22192 states and 30200 transitions. Second operand 11 states. [2019-09-08 10:15:05,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:15:05,033 INFO L93 Difference]: Finished difference Result 64427 states and 87892 transitions. [2019-09-08 10:15:05,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-08 10:15:05,034 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 66 [2019-09-08 10:15:05,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:15:05,118 INFO L225 Difference]: With dead ends: 64427 [2019-09-08 10:15:05,118 INFO L226 Difference]: Without dead ends: 48484 [2019-09-08 10:15:05,167 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2019-09-08 10:15:05,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48484 states. [2019-09-08 10:15:07,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48484 to 25748. [2019-09-08 10:15:07,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25748 states. [2019-09-08 10:15:07,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25748 states to 25748 states and 35109 transitions. [2019-09-08 10:15:07,152 INFO L78 Accepts]: Start accepts. Automaton has 25748 states and 35109 transitions. Word has length 66 [2019-09-08 10:15:07,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:15:07,152 INFO L475 AbstractCegarLoop]: Abstraction has 25748 states and 35109 transitions. [2019-09-08 10:15:07,152 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-08 10:15:07,152 INFO L276 IsEmpty]: Start isEmpty. Operand 25748 states and 35109 transitions. [2019-09-08 10:15:07,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-08 10:15:07,162 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:15:07,162 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2019-09-08 10:15:07,162 INFO L418 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:15:07,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:15:07,163 INFO L82 PathProgramCache]: Analyzing trace with hash 960704265, now seen corresponding path program 1 times [2019-09-08 10:15:07,163 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:15:07,163 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:15:07,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:15:07,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:15:07,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:15:07,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:15:07,211 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 10:15:07,211 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:15:07,211 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 10:15:07,212 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 10:15:07,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 10:15:07,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 10:15:07,212 INFO L87 Difference]: Start difference. First operand 25748 states and 35109 transitions. Second operand 3 states. [2019-09-08 10:15:10,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:15:10,220 INFO L93 Difference]: Finished difference Result 58750 states and 80355 transitions. [2019-09-08 10:15:10,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 10:15:10,221 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2019-09-08 10:15:10,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:15:10,286 INFO L225 Difference]: With dead ends: 58750 [2019-09-08 10:15:10,286 INFO L226 Difference]: Without dead ends: 39129 [2019-09-08 10:15:10,321 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 10:15:10,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39129 states. [2019-09-08 10:15:12,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39129 to 38354. [2019-09-08 10:15:12,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38354 states. [2019-09-08 10:15:12,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38354 states to 38354 states and 51805 transitions. [2019-09-08 10:15:12,676 INFO L78 Accepts]: Start accepts. Automaton has 38354 states and 51805 transitions. Word has length 66 [2019-09-08 10:15:12,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:15:12,676 INFO L475 AbstractCegarLoop]: Abstraction has 38354 states and 51805 transitions. [2019-09-08 10:15:12,676 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 10:15:12,677 INFO L276 IsEmpty]: Start isEmpty. Operand 38354 states and 51805 transitions. [2019-09-08 10:15:12,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-08 10:15:12,682 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:15:12,683 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2019-09-08 10:15:12,683 INFO L418 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:15:12,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:15:12,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1004582415, now seen corresponding path program 1 times [2019-09-08 10:15:12,683 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:15:12,683 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:15:12,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:15:12,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:15:12,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:15:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:15:12,764 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-08 10:15:12,765 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:15:12,765 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 10:15:12,765 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 10:15:12,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 10:15:12,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-09-08 10:15:12,766 INFO L87 Difference]: Start difference. First operand 38354 states and 51805 transitions. Second operand 6 states. [2019-09-08 10:15:19,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:15:19,439 INFO L93 Difference]: Finished difference Result 127418 states and 171319 transitions. [2019-09-08 10:15:19,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 10:15:19,440 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2019-09-08 10:15:19,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:15:19,591 INFO L225 Difference]: With dead ends: 127418 [2019-09-08 10:15:19,591 INFO L226 Difference]: Without dead ends: 89145 [2019-09-08 10:15:19,640 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-09-08 10:15:19,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89145 states. [2019-09-08 10:15:27,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89145 to 87647. [2019-09-08 10:15:27,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87647 states. [2019-09-08 10:15:27,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87647 states to 87647 states and 117187 transitions. [2019-09-08 10:15:27,303 INFO L78 Accepts]: Start accepts. Automaton has 87647 states and 117187 transitions. Word has length 66 [2019-09-08 10:15:27,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:15:27,304 INFO L475 AbstractCegarLoop]: Abstraction has 87647 states and 117187 transitions. [2019-09-08 10:15:27,304 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 10:15:27,304 INFO L276 IsEmpty]: Start isEmpty. Operand 87647 states and 117187 transitions. [2019-09-08 10:15:27,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-08 10:15:27,309 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:15:27,309 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2019-09-08 10:15:27,310 INFO L418 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:15:27,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:15:27,310 INFO L82 PathProgramCache]: Analyzing trace with hash 612922476, now seen corresponding path program 1 times [2019-09-08 10:15:27,310 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:15:27,310 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:15:27,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:15:27,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:15:27,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:15:27,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:15:27,386 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 10:15:27,387 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 10:15:27,387 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 10:15:27,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:15:27,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:15:27,489 INFO L256 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-08 10:15:27,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 10:15:27,586 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (5)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 10:15:27,600 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 10:15:27,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2019-09-08 10:15:27,601 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-08 10:15:27,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-08 10:15:27,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-09-08 10:15:27,604 INFO L87 Difference]: Start difference. First operand 87647 states and 117187 transitions. Second operand 11 states. [2019-09-08 10:15:40,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:15:40,013 INFO L93 Difference]: Finished difference Result 187158 states and 248708 transitions. [2019-09-08 10:15:40,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-08 10:15:40,014 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 66 [2019-09-08 10:15:40,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:15:40,235 INFO L225 Difference]: With dead ends: 187158 [2019-09-08 10:15:40,235 INFO L226 Difference]: Without dead ends: 143840 [2019-09-08 10:15:40,304 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2019-09-08 10:15:40,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143840 states. [2019-09-08 10:15:47,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143840 to 94723. [2019-09-08 10:15:47,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94723 states. [2019-09-08 10:15:47,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94723 states to 94723 states and 126348 transitions. [2019-09-08 10:15:47,688 INFO L78 Accepts]: Start accepts. Automaton has 94723 states and 126348 transitions. Word has length 66 [2019-09-08 10:15:47,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:15:47,688 INFO L475 AbstractCegarLoop]: Abstraction has 94723 states and 126348 transitions. [2019-09-08 10:15:47,688 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-08 10:15:47,688 INFO L276 IsEmpty]: Start isEmpty. Operand 94723 states and 126348 transitions. [2019-09-08 10:15:47,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-08 10:15:47,695 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:15:47,696 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 10:15:47,696 INFO L418 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:15:47,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:15:47,696 INFO L82 PathProgramCache]: Analyzing trace with hash -2100475535, now seen corresponding path program 1 times [2019-09-08 10:15:47,696 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:15:47,697 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:15:47,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:15:47,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:15:47,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:15:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:15:47,767 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-08 10:15:47,767 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:15:47,767 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 10:15:47,768 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 10:15:47,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 10:15:47,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-08 10:15:47,768 INFO L87 Difference]: Start difference. First operand 94723 states and 126348 transitions. Second operand 5 states. [2019-09-08 10:15:59,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:15:59,670 INFO L93 Difference]: Finished difference Result 184192 states and 248655 transitions. [2019-09-08 10:15:59,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 10:15:59,670 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2019-09-08 10:15:59,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:15:59,899 INFO L225 Difference]: With dead ends: 184192 [2019-09-08 10:15:59,900 INFO L226 Difference]: Without dead ends: 143615 [2019-09-08 10:15:59,961 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-09-08 10:16:00,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143615 states. [2019-09-08 10:16:09,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143615 to 127939. [2019-09-08 10:16:09,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127939 states. [2019-09-08 10:16:09,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127939 states to 127939 states and 170198 transitions. [2019-09-08 10:16:09,992 INFO L78 Accepts]: Start accepts. Automaton has 127939 states and 170198 transitions. Word has length 68 [2019-09-08 10:16:09,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:16:09,993 INFO L475 AbstractCegarLoop]: Abstraction has 127939 states and 170198 transitions. [2019-09-08 10:16:09,993 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 10:16:09,993 INFO L276 IsEmpty]: Start isEmpty. Operand 127939 states and 170198 transitions. [2019-09-08 10:16:09,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-08 10:16:09,998 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:16:09,998 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 10:16:09,999 INFO L418 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:16:09,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:16:09,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1725794774, now seen corresponding path program 1 times [2019-09-08 10:16:09,999 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:16:09,999 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:16:10,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:16:10,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:16:10,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:16:10,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:16:10,070 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-08 10:16:10,071 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:16:10,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 10:16:10,071 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 10:16:10,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 10:16:10,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-08 10:16:10,072 INFO L87 Difference]: Start difference. First operand 127939 states and 170198 transitions. Second operand 5 states. [2019-09-08 10:16:25,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:16:25,290 INFO L93 Difference]: Finished difference Result 207073 states and 278950 transitions. [2019-09-08 10:16:25,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 10:16:25,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2019-09-08 10:16:25,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:16:25,557 INFO L225 Difference]: With dead ends: 207073 [2019-09-08 10:16:25,557 INFO L226 Difference]: Without dead ends: 177663 [2019-09-08 10:16:25,612 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-09-08 10:16:25,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177663 states. [2019-09-08 10:16:41,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177663 to 147745. [2019-09-08 10:16:41,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147745 states. [2019-09-08 10:16:41,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147745 states to 147745 states and 196673 transitions. [2019-09-08 10:16:41,471 INFO L78 Accepts]: Start accepts. Automaton has 147745 states and 196673 transitions. Word has length 68 [2019-09-08 10:16:41,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:16:41,471 INFO L475 AbstractCegarLoop]: Abstraction has 147745 states and 196673 transitions. [2019-09-08 10:16:41,471 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 10:16:41,471 INFO L276 IsEmpty]: Start isEmpty. Operand 147745 states and 196673 transitions. [2019-09-08 10:16:41,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-08 10:16:41,478 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:16:41,478 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 10:16:41,478 INFO L418 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:16:41,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:16:41,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1483121734, now seen corresponding path program 1 times [2019-09-08 10:16:41,478 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:16:41,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:16:41,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:16:41,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:16:41,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:16:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:16:41,554 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-08 10:16:41,555 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 10:16:41,555 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 10:16:41,555 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 10:16:41,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 10:16:41,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-08 10:16:41,556 INFO L87 Difference]: Start difference. First operand 147745 states and 196673 transitions. Second operand 5 states. [2019-09-08 10:16:58,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:16:58,611 INFO L93 Difference]: Finished difference Result 218022 states and 292425 transitions. [2019-09-08 10:16:58,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 10:16:58,611 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2019-09-08 10:16:58,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:16:58,858 INFO L225 Difference]: With dead ends: 218022 [2019-09-08 10:16:58,858 INFO L226 Difference]: Without dead ends: 192390 [2019-09-08 10:16:58,911 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-09-08 10:16:59,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192390 states. [2019-09-08 10:17:13,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192390 to 172503. [2019-09-08 10:17:13,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172503 states. [2019-09-08 10:17:13,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172503 states to 172503 states and 229541 transitions. [2019-09-08 10:17:13,401 INFO L78 Accepts]: Start accepts. Automaton has 172503 states and 229541 transitions. Word has length 68 [2019-09-08 10:17:13,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:17:13,401 INFO L475 AbstractCegarLoop]: Abstraction has 172503 states and 229541 transitions. [2019-09-08 10:17:13,402 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 10:17:13,402 INFO L276 IsEmpty]: Start isEmpty. Operand 172503 states and 229541 transitions. [2019-09-08 10:17:13,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-09-08 10:17:13,409 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:17:13,410 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 10:17:13,410 INFO L418 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:17:13,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:17:13,410 INFO L82 PathProgramCache]: Analyzing trace with hash 8068845, now seen corresponding path program 1 times [2019-09-08 10:17:13,410 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:17:13,410 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:17:13,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:17:13,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:17:13,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:17:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:17:13,597 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 10:17:13,598 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 10:17:13,598 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 10:17:13,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:17:13,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:17:13,702 INFO L256 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-08 10:17:13,706 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 10:17:13,865 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 10:17:15,030 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (6)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 10:17:15,035 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 10:17:15,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2019-09-08 10:17:15,036 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-08 10:17:15,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-08 10:17:15,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2019-09-08 10:17:15,037 INFO L87 Difference]: Start difference. First operand 172503 states and 229541 transitions. Second operand 19 states. [2019-09-08 10:17:15,842 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2019-09-08 10:17:16,490 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2019-09-08 10:17:16,689 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2019-09-08 10:17:16,948 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2019-09-08 10:17:17,424 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2019-09-08 10:17:17,801 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-08 10:17:18,367 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-08 10:17:19,143 WARN L188 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-09-08 10:17:19,477 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2019-09-08 10:17:19,663 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2019-09-08 10:17:19,933 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2019-09-08 10:17:20,327 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-08 10:17:20,593 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-08 10:17:20,809 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-09-08 10:17:21,231 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-09-08 10:17:21,373 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2019-09-08 10:17:21,565 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2019-09-08 10:17:21,702 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2019-09-08 10:17:21,930 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2019-09-08 10:17:22,139 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2019-09-08 10:17:22,405 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-08 10:17:22,588 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2019-09-08 10:17:22,737 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2019-09-08 10:17:22,995 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2019-09-08 10:17:23,122 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2019-09-08 10:17:23,289 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2019-09-08 10:17:23,992 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-08 10:17:24,171 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2019-09-08 10:17:24,373 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2019-09-08 10:17:24,617 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2019-09-08 10:17:24,928 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2019-09-08 10:17:25,584 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-08 10:17:25,802 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2019-09-08 10:17:26,025 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-09-08 10:17:26,339 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2019-09-08 10:17:26,498 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-08 10:17:26,637 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-09-08 10:17:26,861 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-09-08 10:17:27,060 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2019-09-08 10:17:27,373 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2019-09-08 10:17:27,539 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-09-08 10:17:27,718 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2019-09-08 10:17:28,073 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-08 10:17:28,223 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2019-09-08 10:17:28,410 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-08 10:17:28,593 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2019-09-08 10:17:28,912 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2019-09-08 10:17:29,107 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-08 10:17:29,284 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2019-09-08 10:17:29,570 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-09-08 10:17:29,813 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2019-09-08 10:17:30,407 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-09-08 10:17:30,719 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2019-09-08 10:17:30,978 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-08 10:17:31,131 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2019-09-08 10:17:31,424 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2019-09-08 10:17:32,279 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-08 10:17:32,601 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2019-09-08 10:17:32,836 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-08 10:17:33,014 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2019-09-08 10:17:33,321 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2019-09-08 10:17:33,640 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2019-09-08 10:17:34,287 WARN L188 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-09-08 10:17:34,505 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-09-08 10:17:34,656 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-08 10:17:34,795 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2019-09-08 10:17:35,090 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-09-08 10:17:35,314 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2019-09-08 10:17:35,466 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2019-09-08 10:17:35,782 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2019-09-08 10:17:35,963 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2019-09-08 10:17:36,138 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2019-09-08 10:17:36,568 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-08 10:17:36,716 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-08 10:17:36,882 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2019-09-08 10:17:37,052 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2019-09-08 10:17:37,242 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-09-08 10:17:37,435 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2019-09-08 10:17:37,733 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-09-08 10:17:37,918 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2019-09-08 10:17:38,106 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-08 10:17:38,361 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-09-08 10:17:38,698 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2019-09-08 10:17:38,963 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-09-08 10:17:39,212 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2019-09-08 10:17:39,417 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2019-09-08 10:17:39,653 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2019-09-08 10:17:39,958 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-08 10:17:40,103 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-08 10:17:40,665 WARN L188 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-08 10:17:40,924 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2019-09-08 10:17:41,355 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-09-08 10:17:41,613 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-09-08 10:17:42,280 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-08 10:17:42,562 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2019-09-08 10:17:43,027 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2019-09-08 10:17:43,202 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-08 10:17:43,414 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-08 10:17:43,740 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2019-09-08 10:17:44,238 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2019-09-08 10:17:44,452 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-09-08 10:17:44,979 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-09-08 10:17:45,204 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-08 10:17:45,369 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2019-09-08 10:17:45,818 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-08 10:17:46,135 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-08 10:17:46,313 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-09-08 10:17:46,503 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2019-09-08 10:17:47,086 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2019-09-08 10:17:47,328 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-09-08 10:17:47,589 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2019-09-08 10:17:48,019 WARN L188 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2019-09-08 10:17:48,497 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-09-08 10:17:49,184 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-09-08 10:17:49,772 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2019-09-08 10:17:50,108 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2019-09-08 10:17:50,414 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-09-08 10:17:50,892 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2019-09-08 10:17:51,304 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2019-09-08 10:17:51,515 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-09-08 10:17:51,710 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-08 10:17:52,050 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2019-09-08 10:17:52,246 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2019-09-08 10:17:52,781 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2019-09-08 10:17:53,166 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2019-09-08 10:17:54,079 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2019-09-08 10:17:54,422 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-08 10:17:54,624 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-09-08 10:17:54,835 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-09-08 10:17:55,716 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2019-09-08 10:17:55,969 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2019-09-08 10:17:56,135 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2019-09-08 10:17:56,607 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2019-09-08 10:17:57,836 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2019-09-08 10:17:58,133 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-08 10:17:58,388 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-08 10:17:58,584 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2019-09-08 10:17:58,734 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2019-09-08 10:17:59,069 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2019-09-08 10:17:59,297 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2019-09-08 10:17:59,790 WARN L188 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-08 10:18:00,630 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-08 10:18:00,983 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2019-09-08 10:18:01,241 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2019-09-08 10:18:01,485 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2019-09-08 10:18:01,670 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2019-09-08 10:18:02,159 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2019-09-08 10:18:02,676 WARN L188 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2019-09-08 10:18:03,055 WARN L188 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-09-08 10:18:03,277 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2019-09-08 10:18:03,870 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-09-08 10:18:04,271 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-08 10:18:04,620 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2019-09-08 10:18:04,884 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-09-08 10:18:05,125 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-09-08 10:18:05,294 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2019-09-08 10:18:05,760 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-08 10:18:05,960 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2019-09-08 10:18:06,323 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2019-09-08 10:18:06,531 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2019-09-08 10:18:07,479 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2019-09-08 10:18:08,061 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2019-09-08 10:18:08,275 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-09-08 10:18:08,822 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2019-09-08 10:18:09,006 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-09-08 10:18:09,312 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2019-09-08 10:18:09,953 WARN L188 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2019-09-08 10:18:10,409 WARN L188 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 82 [2019-09-08 10:18:10,850 WARN L188 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2019-09-08 10:18:11,145 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2019-09-08 10:18:11,648 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2019-09-08 10:18:11,802 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2019-09-08 10:18:12,019 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2019-09-08 10:18:12,251 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2019-09-08 10:18:13,012 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-09-08 10:18:13,427 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2019-09-08 10:18:13,855 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2019-09-08 10:18:14,064 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-08 10:18:14,994 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2019-09-08 10:18:15,160 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2019-09-08 10:18:16,110 WARN L188 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2019-09-08 10:18:16,750 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2019-09-08 10:18:16,993 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2019-09-08 10:18:17,549 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2019-09-08 10:18:18,096 WARN L188 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2019-09-08 10:18:18,542 WARN L188 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-08 10:18:19,380 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-09-08 10:18:19,565 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2019-09-08 10:18:19,762 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2019-09-08 10:18:19,952 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2019-09-08 10:18:21,132 WARN L188 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2019-09-08 10:18:21,783 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2019-09-08 10:18:22,462 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2019-09-08 10:18:22,715 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-09-08 10:18:23,634 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2019-09-08 10:18:23,870 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2019-09-08 10:18:24,275 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2019-09-08 10:18:24,528 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2019-09-08 10:18:25,689 WARN L188 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 78 [2019-09-08 10:18:26,016 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-08 10:18:26,174 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2019-09-08 10:18:26,401 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2019-09-08 10:18:26,556 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-09-08 10:18:26,920 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2019-09-08 10:18:29,498 WARN L188 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 75 [2019-09-08 10:18:29,857 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-09-08 10:18:30,044 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-08 10:18:31,027 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2019-09-08 10:18:31,307 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2019-09-08 10:18:33,512 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2019-09-08 10:18:33,700 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-09-08 10:18:34,261 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2019-09-08 10:18:34,812 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2019-09-08 10:18:35,242 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2019-09-08 10:18:37,519 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2019-09-08 10:18:37,846 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2019-09-08 10:18:38,021 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-09-08 10:18:38,178 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2019-09-08 10:18:38,437 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2019-09-08 10:18:38,788 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2019-09-08 10:18:39,704 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2019-09-08 10:18:39,920 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2019-09-08 10:18:40,547 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2019-09-08 10:18:40,755 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2019-09-08 10:18:40,939 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2019-09-08 10:18:41,122 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2019-09-08 10:18:41,333 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2019-09-08 10:18:42,279 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2019-09-08 10:18:42,526 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2019-09-08 10:18:42,702 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2019-09-08 10:18:43,533 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2019-09-08 10:18:43,861 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2019-09-08 10:18:44,855 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2019-09-08 10:18:45,556 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2019-09-08 10:18:45,710 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-09-08 10:18:46,721 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 72 [2019-09-08 10:18:47,127 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 72 [2019-09-08 10:18:47,609 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2019-09-08 10:18:48,896 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2019-09-08 10:18:49,109 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2019-09-08 10:18:49,411 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2019-09-08 10:18:50,571 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2019-09-08 10:19:02,847 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-08 10:19:03,925 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-08 10:19:06,116 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2019-09-08 10:19:07,728 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2019-09-08 10:19:10,356 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2019-09-08 10:19:12,170 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2019-09-08 10:19:16,439 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2019-09-08 10:19:16,717 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2019-09-08 10:19:17,733 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2019-09-08 10:19:19,695 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2019-09-08 10:19:19,850 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2019-09-08 10:19:20,699 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2019-09-08 10:19:25,792 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2019-09-08 10:19:29,474 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2019-09-08 10:19:40,986 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2019-09-08 10:19:41,255 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2019-09-08 10:19:44,747 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2019-09-08 10:19:45,593 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2019-09-08 10:19:56,492 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-08 10:19:59,560 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2019-09-08 10:20:00,549 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2019-09-08 10:20:04,573 WARN L188 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2019-09-08 10:20:04,788 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2019-09-08 10:20:15,692 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2019-09-08 10:20:19,759 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2019-09-08 10:20:24,343 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2019-09-08 10:20:24,518 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2019-09-08 10:20:24,710 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2019-09-08 10:20:29,385 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2019-09-08 10:20:33,781 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2019-09-08 10:20:34,198 WARN L188 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2019-09-08 10:20:48,828 WARN L188 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 79 [2019-09-08 10:23:01,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 10:23:01,425 INFO L93 Difference]: Finished difference Result 1982581 states and 2590287 transitions. [2019-09-08 10:23:01,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 480 states. [2019-09-08 10:23:01,426 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 73 [2019-09-08 10:23:01,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 10:23:05,091 INFO L225 Difference]: With dead ends: 1982581 [2019-09-08 10:23:05,091 INFO L226 Difference]: Without dead ends: 1809755 [2019-09-08 10:23:05,525 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 51 SyntacticMatches, 15 SemanticMatches, 495 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115960 ImplicationChecksByTransitivity, 77.5s TimeCoverageRelationStatistics Valid=24264, Invalid=222248, Unknown=0, NotChecked=0, Total=246512 [2019-09-08 10:23:06,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809755 states. [2019-09-08 10:24:49,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809755 to 481883. [2019-09-08 10:24:49,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481883 states. [2019-09-08 10:24:51,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481883 states to 481883 states and 643017 transitions. [2019-09-08 10:24:51,507 INFO L78 Accepts]: Start accepts. Automaton has 481883 states and 643017 transitions. Word has length 73 [2019-09-08 10:24:51,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 10:24:51,508 INFO L475 AbstractCegarLoop]: Abstraction has 481883 states and 643017 transitions. [2019-09-08 10:24:51,508 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-08 10:24:51,508 INFO L276 IsEmpty]: Start isEmpty. Operand 481883 states and 643017 transitions. [2019-09-08 10:24:51,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-09-08 10:24:51,520 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 10:24:51,520 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 10:24:51,520 INFO L418 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 10:24:51,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 10:24:51,521 INFO L82 PathProgramCache]: Analyzing trace with hash -478766986, now seen corresponding path program 1 times [2019-09-08 10:24:51,522 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 10:24:51,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 10:24:51,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:24:51,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 10:24:51,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 10:24:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:24:51,685 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 10:24:51,685 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 10:24:51,685 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 10:24:51,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 10:24:51,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 10:24:51,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-08 10:24:51,819 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 10:24:51,925 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 10:24:52,185 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (7)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 10:24:52,197 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 10:24:52,198 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2019-09-08 10:24:52,199 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-08 10:24:52,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-08 10:24:52,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2019-09-08 10:24:52,200 INFO L87 Difference]: Start difference. First operand 481883 states and 643017 transitions. Second operand 17 states.