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.5.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 12:02:45,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 12:02:45,511 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 12:02:45,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 12:02:45,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 12:02:45,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 12:02:45,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 12:02:45,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 12:02:45,530 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 12:02:45,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 12:02:45,532 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 12:02:45,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 12:02:45,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 12:02:45,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 12:02:45,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 12:02:45,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 12:02:45,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 12:02:45,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 12:02:45,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 12:02:45,543 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 12:02:45,544 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 12:02:45,545 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 12:02:45,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 12:02:45,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 12:02:45,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 12:02:45,553 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 12:02:45,554 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 12:02:45,555 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 12:02:45,556 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 12:02:45,557 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 12:02:45,557 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 12:02:45,558 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 12:02:45,558 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 12:02:45,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 12:02:45,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 12:02:45,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 12:02:45,561 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 12:02:45,576 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 12:02:45,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 12:02:45,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 12:02:45,578 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 12:02:45,578 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 12:02:45,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 12:02:45,578 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 12:02:45,579 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 12:02:45,579 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 12:02:45,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 12:02:45,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 12:02:45,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 12:02:45,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 12:02:45,580 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 12:02:45,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 12:02:45,580 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 12:02:45,580 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 12:02:45,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 12:02:45,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 12:02:45,581 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 12:02:45,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 12:02:45,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 12:02:45,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 12:02:45,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 12:02:45,582 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 12:02:45,582 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 12:02:45,582 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 12:02:45,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 12:02:45,583 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 12:02:45,631 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 12:02:45,647 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 12:02:45,651 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 12:02:45,653 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 12:02:45,653 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 12:02:45,654 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2019-09-08 12:02:45,725 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27a75f9e2/55ce2dec2dce4766b7da5c544050b03d/FLAG423a6eb14 [2019-09-08 12:02:46,178 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 12:02:46,179 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2019-09-08 12:02:46,195 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27a75f9e2/55ce2dec2dce4766b7da5c544050b03d/FLAG423a6eb14 [2019-09-08 12:02:46,516 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27a75f9e2/55ce2dec2dce4766b7da5c544050b03d [2019-09-08 12:02:46,526 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 12:02:46,527 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 12:02:46,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 12:02:46,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 12:02:46,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 12:02:46,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 12:02:46" (1/1) ... [2019-09-08 12:02:46,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2264a4d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 12:02:46, skipping insertion in model container [2019-09-08 12:02:46,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 12:02:46" (1/1) ... [2019-09-08 12:02:46,545 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 12:02:46,583 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 12:02:46,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 12:02:46,954 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 12:02:47,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 12:02:47,161 INFO L192 MainTranslator]: Completed translation [2019-09-08 12:02:47,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 12:02:47 WrapperNode [2019-09-08 12:02:47,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 12:02:47,162 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 12:02:47,162 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 12:02:47,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 12:02:47,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 12:02:47" (1/1) ... [2019-09-08 12:02:47,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 12:02:47" (1/1) ... [2019-09-08 12:02:47,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 12:02:47" (1/1) ... [2019-09-08 12:02:47,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 12:02:47" (1/1) ... [2019-09-08 12:02:47,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 12:02:47" (1/1) ... [2019-09-08 12:02:47,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 12:02:47" (1/1) ... [2019-09-08 12:02:47,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 12:02:47" (1/1) ... [2019-09-08 12:02:47,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 12:02:47,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 12:02:47,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 12:02:47,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 12:02:47,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 12:02:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 12:02:47,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 12:02:47,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 12:02:47,277 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 12:02:47,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 12:02:47,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-08 12:02:47,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-08 12:02:47,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-09-08 12:02:47,279 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-09-08 12:02:47,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-08 12:02:47,279 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-09-08 12:02:47,279 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-09-08 12:02:47,280 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-09-08 12:02:47,280 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-09-08 12:02:47,280 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-09-08 12:02:47,281 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2019-09-08 12:02:47,282 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2019-09-08 12:02:47,284 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-09-08 12:02:47,284 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-09-08 12:02:47,284 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 12:02:47,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 12:02:47,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 12:02:47,935 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 12:02:47,936 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-08 12:02:47,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 12:02:47 BoogieIcfgContainer [2019-09-08 12:02:47,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 12:02:47,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 12:02:47,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 12:02:47,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 12:02:47,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 12:02:46" (1/3) ... [2019-09-08 12:02:47,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c38328f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 12:02:47, skipping insertion in model container [2019-09-08 12:02:47,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 12:02:47" (2/3) ... [2019-09-08 12:02:47,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c38328f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 12:02:47, skipping insertion in model container [2019-09-08 12:02:47,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 12:02:47" (3/3) ... [2019-09-08 12:02:47,951 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2019-09-08 12:02:47,962 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 12:02:47,984 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 12:02:48,003 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 12:02:48,035 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 12:02:48,036 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 12:02:48,036 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 12:02:48,036 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 12:02:48,036 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 12:02:48,037 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 12:02:48,037 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 12:02:48,037 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 12:02:48,037 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 12:02:48,058 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states. [2019-09-08 12:02:48,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-08 12:02:48,068 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:02:48,069 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 12:02:48,070 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:02:48,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:02:48,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1817942927, now seen corresponding path program 1 times [2019-09-08 12:02:48,077 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:02:48,077 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:02:48,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:02:48,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:02:48,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:02:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:02:48,485 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 12:02:48,488 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:02:48,488 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 12:02:48,494 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 12:02:48,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 12:02:48,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 12:02:48,512 INFO L87 Difference]: Start difference. First operand 104 states. Second operand 3 states. [2019-09-08 12:02:48,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:02:48,591 INFO L93 Difference]: Finished difference Result 228 states and 363 transitions. [2019-09-08 12:02:48,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 12:02:48,593 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2019-09-08 12:02:48,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:02:48,607 INFO L225 Difference]: With dead ends: 228 [2019-09-08 12:02:48,608 INFO L226 Difference]: Without dead ends: 154 [2019-09-08 12:02:48,612 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 12:02:48,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-09-08 12:02:48,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 152. [2019-09-08 12:02:48,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2019-09-08 12:02:48,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 219 transitions. [2019-09-08 12:02:48,675 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 219 transitions. Word has length 64 [2019-09-08 12:02:48,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:02:48,676 INFO L475 AbstractCegarLoop]: Abstraction has 152 states and 219 transitions. [2019-09-08 12:02:48,676 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 12:02:48,676 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 219 transitions. [2019-09-08 12:02:48,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-08 12:02:48,680 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:02:48,680 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 12:02:48,680 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:02:48,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:02:48,681 INFO L82 PathProgramCache]: Analyzing trace with hash 344530776, now seen corresponding path program 1 times [2019-09-08 12:02:48,681 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:02:48,681 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:02:48,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:02:48,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:02:48,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:02:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:02:48,881 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 12:02:48,881 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:02:48,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 12:02:48,883 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 12:02:48,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 12:02:48,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 12:02:48,884 INFO L87 Difference]: Start difference. First operand 152 states and 219 transitions. Second operand 3 states. [2019-09-08 12:02:48,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:02:48,935 INFO L93 Difference]: Finished difference Result 364 states and 555 transitions. [2019-09-08 12:02:48,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 12:02:48,939 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2019-09-08 12:02:48,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:02:48,947 INFO L225 Difference]: With dead ends: 364 [2019-09-08 12:02:48,947 INFO L226 Difference]: Without dead ends: 250 [2019-09-08 12:02:48,949 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 12:02:48,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2019-09-08 12:02:48,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 248. [2019-09-08 12:02:48,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2019-09-08 12:02:48,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 371 transitions. [2019-09-08 12:02:48,983 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 371 transitions. Word has length 65 [2019-09-08 12:02:48,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:02:48,983 INFO L475 AbstractCegarLoop]: Abstraction has 248 states and 371 transitions. [2019-09-08 12:02:48,984 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 12:02:48,984 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 371 transitions. [2019-09-08 12:02:48,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-08 12:02:48,986 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:02:48,986 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 12:02:48,986 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:02:48,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:02:48,987 INFO L82 PathProgramCache]: Analyzing trace with hash -288418835, now seen corresponding path program 1 times [2019-09-08 12:02:48,987 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:02:48,987 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:02:48,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:02:48,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:02:48,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:02:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:02:49,080 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 12:02:49,081 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:02:49,081 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 12:02:49,081 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 12:02:49,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 12:02:49,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 12:02:49,082 INFO L87 Difference]: Start difference. First operand 248 states and 371 transitions. Second operand 3 states. [2019-09-08 12:02:49,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:02:49,143 INFO L93 Difference]: Finished difference Result 636 states and 985 transitions. [2019-09-08 12:02:49,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 12:02:49,144 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2019-09-08 12:02:49,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:02:49,148 INFO L225 Difference]: With dead ends: 636 [2019-09-08 12:02:49,148 INFO L226 Difference]: Without dead ends: 426 [2019-09-08 12:02:49,150 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 12:02:49,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2019-09-08 12:02:49,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 424. [2019-09-08 12:02:49,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2019-09-08 12:02:49,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 647 transitions. [2019-09-08 12:02:49,191 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 647 transitions. Word has length 66 [2019-09-08 12:02:49,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:02:49,192 INFO L475 AbstractCegarLoop]: Abstraction has 424 states and 647 transitions. [2019-09-08 12:02:49,192 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 12:02:49,192 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 647 transitions. [2019-09-08 12:02:49,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-09-08 12:02:49,194 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:02:49,194 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 12:02:49,197 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:02:49,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:02:49,197 INFO L82 PathProgramCache]: Analyzing trace with hash -2091271574, now seen corresponding path program 1 times [2019-09-08 12:02:49,198 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:02:49,198 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:02:49,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:02:49,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:02:49,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:02:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:02:49,292 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 12:02:49,292 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:02:49,292 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 12:02:49,293 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 12:02:49,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 12:02:49,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 12:02:49,294 INFO L87 Difference]: Start difference. First operand 424 states and 647 transitions. Second operand 3 states. [2019-09-08 12:02:49,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:02:49,351 INFO L93 Difference]: Finished difference Result 1132 states and 1761 transitions. [2019-09-08 12:02:49,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 12:02:49,351 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2019-09-08 12:02:49,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:02:49,359 INFO L225 Difference]: With dead ends: 1132 [2019-09-08 12:02:49,359 INFO L226 Difference]: Without dead ends: 746 [2019-09-08 12:02:49,365 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 12:02:49,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2019-09-08 12:02:49,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 744. [2019-09-08 12:02:49,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2019-09-08 12:02:49,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1143 transitions. [2019-09-08 12:02:49,427 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1143 transitions. Word has length 67 [2019-09-08 12:02:49,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:02:49,428 INFO L475 AbstractCegarLoop]: Abstraction has 744 states and 1143 transitions. [2019-09-08 12:02:49,428 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 12:02:49,429 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1143 transitions. [2019-09-08 12:02:49,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-08 12:02:49,430 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:02:49,431 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 12:02:49,431 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:02:49,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:02:49,431 INFO L82 PathProgramCache]: Analyzing trace with hash -900755135, now seen corresponding path program 1 times [2019-09-08 12:02:49,432 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:02:49,432 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:02:49,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:02:49,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:02:49,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:02:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:02:49,572 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 12:02:49,572 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:02:49,573 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 12:02:49,574 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 12:02:49,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 12:02:49,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 12:02:49,575 INFO L87 Difference]: Start difference. First operand 744 states and 1143 transitions. Second operand 5 states. [2019-09-08 12:02:49,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:02:49,885 INFO L93 Difference]: Finished difference Result 2156 states and 3353 transitions. [2019-09-08 12:02:49,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 12:02:49,886 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2019-09-08 12:02:49,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:02:49,898 INFO L225 Difference]: With dead ends: 2156 [2019-09-08 12:02:49,898 INFO L226 Difference]: Without dead ends: 1450 [2019-09-08 12:02:49,901 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 12:02:49,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2019-09-08 12:02:49,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 1448. [2019-09-08 12:02:49,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1448 states. [2019-09-08 12:02:49,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 2231 transitions. [2019-09-08 12:02:49,990 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 2231 transitions. Word has length 68 [2019-09-08 12:02:49,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:02:49,990 INFO L475 AbstractCegarLoop]: Abstraction has 1448 states and 2231 transitions. [2019-09-08 12:02:49,990 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 12:02:49,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 2231 transitions. [2019-09-08 12:02:49,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-08 12:02:49,992 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:02:49,992 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 12:02:49,993 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:02:49,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:02:49,993 INFO L82 PathProgramCache]: Analyzing trace with hash 426630054, now seen corresponding path program 1 times [2019-09-08 12:02:49,993 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:02:49,993 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:02:49,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:02:49,995 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:02:49,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:02:50,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:02:50,082 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 12:02:50,083 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:02:50,083 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 12:02:50,085 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 12:02:50,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 12:02:50,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 12:02:50,085 INFO L87 Difference]: Start difference. First operand 1448 states and 2231 transitions. Second operand 5 states. [2019-09-08 12:02:50,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:02:50,270 INFO L93 Difference]: Finished difference Result 2858 states and 4424 transitions. [2019-09-08 12:02:50,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 12:02:50,271 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2019-09-08 12:02:50,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:02:50,279 INFO L225 Difference]: With dead ends: 2858 [2019-09-08 12:02:50,280 INFO L226 Difference]: Without dead ends: 1448 [2019-09-08 12:02:50,283 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 12:02:50,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2019-09-08 12:02:50,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1448. [2019-09-08 12:02:50,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1448 states. [2019-09-08 12:02:50,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 2215 transitions. [2019-09-08 12:02:50,404 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 2215 transitions. Word has length 68 [2019-09-08 12:02:50,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:02:50,405 INFO L475 AbstractCegarLoop]: Abstraction has 1448 states and 2215 transitions. [2019-09-08 12:02:50,405 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 12:02:50,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 2215 transitions. [2019-09-08 12:02:50,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-08 12:02:50,406 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:02:50,407 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 12:02:50,407 INFO L418 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:02:50,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:02:50,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1700498059, now seen corresponding path program 1 times [2019-09-08 12:02:50,408 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:02:50,408 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:02:50,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:02:50,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:02:50,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:02:50,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:02:50,497 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 12:02:50,498 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:02:50,498 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 12:02:50,498 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 12:02:50,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 12:02:50,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 12:02:50,499 INFO L87 Difference]: Start difference. First operand 1448 states and 2215 transitions. Second operand 5 states. [2019-09-08 12:02:50,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:02:50,701 INFO L93 Difference]: Finished difference Result 2858 states and 4392 transitions. [2019-09-08 12:02:50,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 12:02:50,702 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2019-09-08 12:02:50,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:02:50,710 INFO L225 Difference]: With dead ends: 2858 [2019-09-08 12:02:50,710 INFO L226 Difference]: Without dead ends: 1448 [2019-09-08 12:02:50,714 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 12:02:50,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2019-09-08 12:02:50,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1448. [2019-09-08 12:02:50,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1448 states. [2019-09-08 12:02:50,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 2199 transitions. [2019-09-08 12:02:50,806 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 2199 transitions. Word has length 68 [2019-09-08 12:02:50,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:02:50,806 INFO L475 AbstractCegarLoop]: Abstraction has 1448 states and 2199 transitions. [2019-09-08 12:02:50,806 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 12:02:50,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 2199 transitions. [2019-09-08 12:02:50,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-08 12:02:50,808 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:02:50,808 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 12:02:50,808 INFO L418 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:02:50,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:02:50,809 INFO L82 PathProgramCache]: Analyzing trace with hash 253468464, now seen corresponding path program 1 times [2019-09-08 12:02:50,809 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:02:50,809 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:02:50,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:02:50,811 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:02:50,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:02:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:02:50,991 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 12:02:50,992 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:02:50,992 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 12:02:50,993 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 12:02:50,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 12:02:50,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-09-08 12:02:50,994 INFO L87 Difference]: Start difference. First operand 1448 states and 2199 transitions. Second operand 7 states. [2019-09-08 12:02:51,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:02:51,899 INFO L93 Difference]: Finished difference Result 12728 states and 19487 transitions. [2019-09-08 12:02:51,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 12:02:51,900 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2019-09-08 12:02:51,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:02:51,957 INFO L225 Difference]: With dead ends: 12728 [2019-09-08 12:02:51,957 INFO L226 Difference]: Without dead ends: 11318 [2019-09-08 12:02:51,963 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2019-09-08 12:02:51,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11318 states. [2019-09-08 12:02:52,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11318 to 4264. [2019-09-08 12:02:52,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4264 states. [2019-09-08 12:02:52,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 6455 transitions. [2019-09-08 12:02:52,383 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 6455 transitions. Word has length 68 [2019-09-08 12:02:52,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:02:52,383 INFO L475 AbstractCegarLoop]: Abstraction has 4264 states and 6455 transitions. [2019-09-08 12:02:52,383 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 12:02:52,383 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 6455 transitions. [2019-09-08 12:02:52,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-08 12:02:52,384 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:02:52,385 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, 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 12:02:52,385 INFO L418 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:02:52,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:02:52,385 INFO L82 PathProgramCache]: Analyzing trace with hash -2103084374, now seen corresponding path program 1 times [2019-09-08 12:02:52,385 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:02:52,386 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:02:52,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:02:52,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:02:52,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:02:52,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:02:52,617 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 12:02:52,618 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:02:52,618 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 12:02:52,618 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 12:02:52,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 12:02:52,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2019-09-08 12:02:52,619 INFO L87 Difference]: Start difference. First operand 4264 states and 6455 transitions. Second operand 7 states. [2019-09-08 12:02:53,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:02:53,086 INFO L93 Difference]: Finished difference Result 9904 states and 15035 transitions. [2019-09-08 12:02:53,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 12:02:53,086 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-09-08 12:02:53,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:02:53,114 INFO L225 Difference]: With dead ends: 9904 [2019-09-08 12:02:53,115 INFO L226 Difference]: Without dead ends: 5678 [2019-09-08 12:02:53,126 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2019-09-08 12:02:53,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5678 states. [2019-09-08 12:02:53,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5678 to 4264. [2019-09-08 12:02:53,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4264 states. [2019-09-08 12:02:53,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 6423 transitions. [2019-09-08 12:02:53,488 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 6423 transitions. Word has length 70 [2019-09-08 12:02:53,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:02:53,488 INFO L475 AbstractCegarLoop]: Abstraction has 4264 states and 6423 transitions. [2019-09-08 12:02:53,488 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 12:02:53,488 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 6423 transitions. [2019-09-08 12:02:53,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-08 12:02:53,489 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:02:53,489 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, 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 12:02:53,490 INFO L418 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:02:53,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:02:53,490 INFO L82 PathProgramCache]: Analyzing trace with hash -2123133717, now seen corresponding path program 1 times [2019-09-08 12:02:53,490 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:02:53,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:02:53,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:02:53,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:02:53,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:02:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:02:53,581 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 12:02:53,581 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:02:53,582 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 12:02:53,582 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 12:02:53,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 12:02:53,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 12:02:53,583 INFO L87 Difference]: Start difference. First operand 4264 states and 6423 transitions. Second operand 3 states. [2019-09-08 12:02:54,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:02:54,026 INFO L93 Difference]: Finished difference Result 10348 states and 15529 transitions. [2019-09-08 12:02:54,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 12:02:54,026 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2019-09-08 12:02:54,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:02:54,053 INFO L225 Difference]: With dead ends: 10348 [2019-09-08 12:02:54,053 INFO L226 Difference]: Without dead ends: 6122 [2019-09-08 12:02:54,062 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 12:02:54,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6122 states. [2019-09-08 12:02:54,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6122 to 6072. [2019-09-08 12:02:54,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6072 states. [2019-09-08 12:02:54,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6072 states to 6072 states and 8967 transitions. [2019-09-08 12:02:54,474 INFO L78 Accepts]: Start accepts. Automaton has 6072 states and 8967 transitions. Word has length 70 [2019-09-08 12:02:54,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:02:54,475 INFO L475 AbstractCegarLoop]: Abstraction has 6072 states and 8967 transitions. [2019-09-08 12:02:54,475 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 12:02:54,475 INFO L276 IsEmpty]: Start isEmpty. Operand 6072 states and 8967 transitions. [2019-09-08 12:02:54,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-09-08 12:02:54,476 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:02:54,476 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, 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 12:02:54,476 INFO L418 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:02:54,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:02:54,477 INFO L82 PathProgramCache]: Analyzing trace with hash -48803801, now seen corresponding path program 1 times [2019-09-08 12:02:54,477 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:02:54,477 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:02:54,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:02:54,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:02:54,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:02:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:02:54,526 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 12:02:54,526 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:02:54,526 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 12:02:54,527 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 12:02:54,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 12:02:54,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 12:02:54,527 INFO L87 Difference]: Start difference. First operand 6072 states and 8967 transitions. Second operand 3 states. [2019-09-08 12:02:55,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:02:55,091 INFO L93 Difference]: Finished difference Result 13567 states and 20253 transitions. [2019-09-08 12:02:55,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 12:02:55,091 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2019-09-08 12:02:55,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:02:55,114 INFO L225 Difference]: With dead ends: 13567 [2019-09-08 12:02:55,114 INFO L226 Difference]: Without dead ends: 9340 [2019-09-08 12:02:55,126 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 12:02:55,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9340 states. [2019-09-08 12:02:55,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9340 to 9338. [2019-09-08 12:02:55,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9338 states. [2019-09-08 12:02:55,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9338 states to 9338 states and 13769 transitions. [2019-09-08 12:02:55,778 INFO L78 Accepts]: Start accepts. Automaton has 9338 states and 13769 transitions. Word has length 71 [2019-09-08 12:02:55,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:02:55,778 INFO L475 AbstractCegarLoop]: Abstraction has 9338 states and 13769 transitions. [2019-09-08 12:02:55,778 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 12:02:55,779 INFO L276 IsEmpty]: Start isEmpty. Operand 9338 states and 13769 transitions. [2019-09-08 12:02:55,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-09-08 12:02:55,779 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:02:55,780 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, 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 12:02:55,780 INFO L418 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:02:55,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:02:55,780 INFO L82 PathProgramCache]: Analyzing trace with hash -773015508, now seen corresponding path program 1 times [2019-09-08 12:02:55,780 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:02:55,781 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:02:55,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:02:55,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:02:55,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:02:55,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:02:55,875 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 12:02:55,876 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:02:55,876 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 12:02:55,876 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 12:02:55,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 12:02:55,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 12:02:55,877 INFO L87 Difference]: Start difference. First operand 9338 states and 13769 transitions. Second operand 5 states. [2019-09-08 12:02:56,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:02:56,750 INFO L93 Difference]: Finished difference Result 18120 states and 26591 transitions. [2019-09-08 12:02:56,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-08 12:02:56,751 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2019-09-08 12:02:56,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:02:56,790 INFO L225 Difference]: With dead ends: 18120 [2019-09-08 12:02:56,791 INFO L226 Difference]: Without dead ends: 18118 [2019-09-08 12:02:56,798 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 12:02:56,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18118 states. [2019-09-08 12:02:57,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18118 to 9754. [2019-09-08 12:02:57,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9754 states. [2019-09-08 12:02:57,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9754 states to 9754 states and 14169 transitions. [2019-09-08 12:02:57,927 INFO L78 Accepts]: Start accepts. Automaton has 9754 states and 14169 transitions. Word has length 71 [2019-09-08 12:02:57,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:02:57,927 INFO L475 AbstractCegarLoop]: Abstraction has 9754 states and 14169 transitions. [2019-09-08 12:02:57,927 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 12:02:57,928 INFO L276 IsEmpty]: Start isEmpty. Operand 9754 states and 14169 transitions. [2019-09-08 12:02:57,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-08 12:02:57,932 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:02:57,936 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:02:57,937 INFO L418 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:02:57,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:02:57,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1754912134, now seen corresponding path program 1 times [2019-09-08 12:02:57,937 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:02:57,938 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:02:57,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:02:57,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:02:57,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:02:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:02:58,095 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-09-08 12:02:58,095 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:02:58,096 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 12:02:58,096 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 12:02:58,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 12:02:58,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-09-08 12:02:58,097 INFO L87 Difference]: Start difference. First operand 9754 states and 14169 transitions. Second operand 7 states. [2019-09-08 12:03:00,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:03:00,196 INFO L93 Difference]: Finished difference Result 41574 states and 60527 transitions. [2019-09-08 12:03:00,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 12:03:00,196 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2019-09-08 12:03:00,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:03:00,258 INFO L225 Difference]: With dead ends: 41574 [2019-09-08 12:03:00,258 INFO L226 Difference]: Without dead ends: 38308 [2019-09-08 12:03:00,275 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2019-09-08 12:03:00,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38308 states. [2019-09-08 12:03:01,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38308 to 16250. [2019-09-08 12:03:01,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16250 states. [2019-09-08 12:03:01,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16250 states to 16250 states and 23449 transitions. [2019-09-08 12:03:01,433 INFO L78 Accepts]: Start accepts. Automaton has 16250 states and 23449 transitions. Word has length 98 [2019-09-08 12:03:01,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:03:01,433 INFO L475 AbstractCegarLoop]: Abstraction has 16250 states and 23449 transitions. [2019-09-08 12:03:01,433 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 12:03:01,434 INFO L276 IsEmpty]: Start isEmpty. Operand 16250 states and 23449 transitions. [2019-09-08 12:03:01,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-08 12:03:01,438 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:03:01,438 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:01,438 INFO L418 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:03:01,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:03:01,438 INFO L82 PathProgramCache]: Analyzing trace with hash -255171438, now seen corresponding path program 1 times [2019-09-08 12:03:01,439 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:03:01,439 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:03:01,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:03:01,440 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:03:01,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:03:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:03:01,576 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-09-08 12:03:01,576 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:03:01,577 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 12:03:01,577 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 12:03:01,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 12:03:01,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-09-08 12:03:01,578 INFO L87 Difference]: Start difference. First operand 16250 states and 23449 transitions. Second operand 7 states. [2019-09-08 12:03:03,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:03:03,541 INFO L93 Difference]: Finished difference Result 41494 states and 60127 transitions. [2019-09-08 12:03:03,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 12:03:03,541 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2019-09-08 12:03:03,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:03:03,577 INFO L225 Difference]: With dead ends: 41494 [2019-09-08 12:03:03,577 INFO L226 Difference]: Without dead ends: 31780 [2019-09-08 12:03:03,602 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2019-09-08 12:03:03,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31780 states. [2019-09-08 12:03:05,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31780 to 22698. [2019-09-08 12:03:05,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22698 states. [2019-09-08 12:03:05,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22698 states to 22698 states and 32681 transitions. [2019-09-08 12:03:05,045 INFO L78 Accepts]: Start accepts. Automaton has 22698 states and 32681 transitions. Word has length 98 [2019-09-08 12:03:05,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:03:05,046 INFO L475 AbstractCegarLoop]: Abstraction has 22698 states and 32681 transitions. [2019-09-08 12:03:05,046 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 12:03:05,046 INFO L276 IsEmpty]: Start isEmpty. Operand 22698 states and 32681 transitions. [2019-09-08 12:03:05,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-08 12:03:05,050 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:03:05,051 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:05,051 INFO L418 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:03:05,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:03:05,051 INFO L82 PathProgramCache]: Analyzing trace with hash -231426216, now seen corresponding path program 1 times [2019-09-08 12:03:05,051 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:03:05,052 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:03:05,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:03:05,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:03:05,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:03:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:03:05,115 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 12:03:05,115 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:03:05,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 12:03:05,116 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 12:03:05,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 12:03:05,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 12:03:05,116 INFO L87 Difference]: Start difference. First operand 22698 states and 32681 transitions. Second operand 3 states. [2019-09-08 12:03:06,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:03:06,175 INFO L93 Difference]: Finished difference Result 41108 states and 59465 transitions. [2019-09-08 12:03:06,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 12:03:06,176 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2019-09-08 12:03:06,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:03:06,195 INFO L225 Difference]: With dead ends: 41108 [2019-09-08 12:03:06,195 INFO L226 Difference]: Without dead ends: 18450 [2019-09-08 12:03:06,221 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 12:03:06,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18450 states. [2019-09-08 12:03:08,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18450 to 18448. [2019-09-08 12:03:08,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18448 states. [2019-09-08 12:03:08,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18448 states to 18448 states and 26598 transitions. [2019-09-08 12:03:08,030 INFO L78 Accepts]: Start accepts. Automaton has 18448 states and 26598 transitions. Word has length 98 [2019-09-08 12:03:08,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:03:08,031 INFO L475 AbstractCegarLoop]: Abstraction has 18448 states and 26598 transitions. [2019-09-08 12:03:08,031 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 12:03:08,031 INFO L276 IsEmpty]: Start isEmpty. Operand 18448 states and 26598 transitions. [2019-09-08 12:03:08,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-09-08 12:03:08,035 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:03:08,035 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:08,036 INFO L418 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:03:08,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:03:08,036 INFO L82 PathProgramCache]: Analyzing trace with hash 544702546, now seen corresponding path program 1 times [2019-09-08 12:03:08,036 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:03:08,036 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:03:08,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:03:08,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:03:08,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:03:08,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:03:08,166 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-08 12:03:08,166 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:03:08,166 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 12:03:08,167 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 12:03:08,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 12:03:08,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-08 12:03:08,167 INFO L87 Difference]: Start difference. First operand 18448 states and 26598 transitions. Second operand 7 states. [2019-09-08 12:03:09,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:03:09,970 INFO L93 Difference]: Finished difference Result 39452 states and 57132 transitions. [2019-09-08 12:03:09,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 12:03:09,970 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2019-09-08 12:03:09,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:03:10,001 INFO L225 Difference]: With dead ends: 39452 [2019-09-08 12:03:10,002 INFO L226 Difference]: Without dead ends: 31578 [2019-09-08 12:03:10,015 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2019-09-08 12:03:10,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31578 states. [2019-09-08 12:03:11,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31578 to 23696. [2019-09-08 12:03:11,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23696 states. [2019-09-08 12:03:11,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23696 states to 23696 states and 34118 transitions. [2019-09-08 12:03:11,353 INFO L78 Accepts]: Start accepts. Automaton has 23696 states and 34118 transitions. Word has length 99 [2019-09-08 12:03:11,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:03:11,353 INFO L475 AbstractCegarLoop]: Abstraction has 23696 states and 34118 transitions. [2019-09-08 12:03:11,353 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 12:03:11,353 INFO L276 IsEmpty]: Start isEmpty. Operand 23696 states and 34118 transitions. [2019-09-08 12:03:11,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-09-08 12:03:11,357 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:03:11,358 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:11,358 INFO L418 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:03:11,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:03:11,358 INFO L82 PathProgramCache]: Analyzing trace with hash 148431430, now seen corresponding path program 1 times [2019-09-08 12:03:11,358 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:03:11,358 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:03:11,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:03:11,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:03:11,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:03:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:03:11,516 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-08 12:03:11,517 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:03:11,517 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 12:03:11,517 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 12:03:11,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 12:03:11,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-09-08 12:03:11,518 INFO L87 Difference]: Start difference. First operand 23696 states and 34118 transitions. Second operand 7 states. [2019-09-08 12:03:14,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:03:14,107 INFO L93 Difference]: Finished difference Result 44700 states and 64652 transitions. [2019-09-08 12:03:14,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 12:03:14,107 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2019-09-08 12:03:14,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:03:14,149 INFO L225 Difference]: With dead ends: 44700 [2019-09-08 12:03:14,149 INFO L226 Difference]: Without dead ends: 36826 [2019-09-08 12:03:14,166 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2019-09-08 12:03:14,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36826 states. [2019-09-08 12:03:15,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36826 to 28944. [2019-09-08 12:03:15,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28944 states. [2019-09-08 12:03:16,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28944 states to 28944 states and 41638 transitions. [2019-09-08 12:03:16,021 INFO L78 Accepts]: Start accepts. Automaton has 28944 states and 41638 transitions. Word has length 99 [2019-09-08 12:03:16,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:03:16,021 INFO L475 AbstractCegarLoop]: Abstraction has 28944 states and 41638 transitions. [2019-09-08 12:03:16,021 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 12:03:16,021 INFO L276 IsEmpty]: Start isEmpty. Operand 28944 states and 41638 transitions. [2019-09-08 12:03:16,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-09-08 12:03:16,025 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:03:16,025 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:16,025 INFO L418 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:03:16,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:03:16,026 INFO L82 PathProgramCache]: Analyzing trace with hash 842687034, now seen corresponding path program 1 times [2019-09-08 12:03:16,026 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:03:16,026 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:03:16,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:03:16,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:03:16,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:03:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:03:16,116 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 12:03:16,116 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 12:03:16,116 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 12:03:16,133 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 12:03:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:03:16,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-08 12:03:16,280 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 12:03:16,453 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-08 12:03:16,463 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 12:03:16,463 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2019-09-08 12:03:16,466 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-08 12:03:16,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-08 12:03:16,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-09-08 12:03:16,467 INFO L87 Difference]: Start difference. First operand 28944 states and 41638 transitions. Second operand 10 states. [2019-09-08 12:03:21,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:03:21,506 INFO L93 Difference]: Finished difference Result 68340 states and 99656 transitions. [2019-09-08 12:03:21,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-09-08 12:03:21,506 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 99 [2019-09-08 12:03:21,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:03:21,717 INFO L225 Difference]: With dead ends: 68340 [2019-09-08 12:03:21,717 INFO L226 Difference]: Without dead ends: 63090 [2019-09-08 12:03:21,744 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2019-09-08 12:03:21,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63090 states. [2019-09-08 12:03:25,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63090 to 39440. [2019-09-08 12:03:25,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39440 states. [2019-09-08 12:03:25,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39440 states to 39440 states and 56870 transitions. [2019-09-08 12:03:25,550 INFO L78 Accepts]: Start accepts. Automaton has 39440 states and 56870 transitions. Word has length 99 [2019-09-08 12:03:25,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:03:25,550 INFO L475 AbstractCegarLoop]: Abstraction has 39440 states and 56870 transitions. [2019-09-08 12:03:25,550 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-08 12:03:25,550 INFO L276 IsEmpty]: Start isEmpty. Operand 39440 states and 56870 transitions. [2019-09-08 12:03:25,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-09-08 12:03:25,558 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:03:25,558 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:25,559 INFO L418 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:03:25,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:03:25,559 INFO L82 PathProgramCache]: Analyzing trace with hash -514383113, now seen corresponding path program 1 times [2019-09-08 12:03:25,559 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:03:25,559 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:03:25,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:03:25,561 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:03:25,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:03:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:03:25,782 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 12:03:25,783 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 12:03:25,783 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 12:03:25,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:03:25,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:03:25,902 INFO L256 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-08 12:03:25,907 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 12:03:26,025 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-08 12:03:26,030 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 12:03:26,030 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 4] total 12 [2019-09-08 12:03:26,031 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-08 12:03:26,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-08 12:03:26,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-09-08 12:03:26,032 INFO L87 Difference]: Start difference. First operand 39440 states and 56870 transitions. Second operand 12 states. [2019-09-08 12:03:46,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:03:46,485 INFO L93 Difference]: Finished difference Result 271246 states and 385652 transitions. [2019-09-08 12:03:46,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2019-09-08 12:03:46,485 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 100 [2019-09-08 12:03:46,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:03:46,893 INFO L225 Difference]: With dead ends: 271246 [2019-09-08 12:03:46,893 INFO L226 Difference]: Without dead ends: 231884 [2019-09-08 12:03:46,972 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1086 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=651, Invalid=2771, Unknown=0, NotChecked=0, Total=3422 [2019-09-08 12:03:47,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231884 states. [2019-09-08 12:03:58,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231884 to 107791. [2019-09-08 12:03:58,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107791 states. [2019-09-08 12:03:58,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107791 states to 107791 states and 150780 transitions. [2019-09-08 12:03:58,832 INFO L78 Accepts]: Start accepts. Automaton has 107791 states and 150780 transitions. Word has length 100 [2019-09-08 12:03:58,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:03:58,832 INFO L475 AbstractCegarLoop]: Abstraction has 107791 states and 150780 transitions. [2019-09-08 12:03:58,832 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-08 12:03:58,832 INFO L276 IsEmpty]: Start isEmpty. Operand 107791 states and 150780 transitions. [2019-09-08 12:03:58,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-09-08 12:03:58,836 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:03:58,837 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:58,837 INFO L418 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:03:58,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:03:58,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1252193849, now seen corresponding path program 1 times [2019-09-08 12:03:58,837 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:03:58,837 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:03:58,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:03:58,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:03:58,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:03:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:03:59,096 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 12:03:59,097 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 12:03:59,097 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) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 12:03:59,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:03:59,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:03:59,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 735 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-08 12:03:59,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 12:03:59,427 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 12:03:59,896 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 12:03:59,910 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 12:03:59,910 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2019-09-08 12:03:59,911 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-08 12:03:59,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-08 12:03:59,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2019-09-08 12:03:59,912 INFO L87 Difference]: Start difference. First operand 107791 states and 150780 transitions. Second operand 19 states. [2019-09-08 12:04:00,692 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2019-09-08 12:04:01,036 WARN L188 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2019-09-08 12:04:01,518 WARN L188 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 81 [2019-09-08 12:04:01,833 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-09-08 12:04:02,208 WARN L188 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2019-09-08 12:04:02,857 WARN L188 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2019-09-08 12:04:03,265 WARN L188 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2019-09-08 12:04:03,734 WARN L188 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2019-09-08 12:04:04,225 WARN L188 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-09-08 12:04:04,578 WARN L188 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-09-08 12:04:05,028 WARN L188 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2019-09-08 12:04:05,394 WARN L188 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-09-08 12:04:05,886 WARN L188 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2019-09-08 12:04:06,274 WARN L188 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2019-09-08 12:04:06,686 WARN L188 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2019-09-08 12:04:07,091 WARN L188 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2019-09-08 12:04:07,512 WARN L188 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2019-09-08 12:04:08,029 WARN L188 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 87 [2019-09-08 12:04:08,452 WARN L188 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 79 [2019-09-08 12:04:08,810 WARN L188 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2019-09-08 12:04:09,141 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2019-09-08 12:04:09,573 WARN L188 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 81 [2019-09-08 12:04:09,927 WARN L188 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-09-08 12:04:10,271 WARN L188 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2019-09-08 12:04:10,703 WARN L188 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-09-08 12:04:11,173 WARN L188 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2019-09-08 12:04:11,545 WARN L188 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-09-08 12:04:13,504 WARN L188 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2019-09-08 12:04:13,861 WARN L188 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2019-09-08 12:04:14,329 WARN L188 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 87 [2019-09-08 12:04:14,709 WARN L188 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2019-09-08 12:04:15,138 WARN L188 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2019-09-08 12:04:15,601 WARN L188 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-09-08 12:04:16,252 WARN L188 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-08 12:04:16,640 WARN L188 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2019-09-08 12:04:18,451 WARN L188 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-09-08 12:04:18,779 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-09-08 12:04:19,182 WARN L188 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2019-09-08 12:04:19,548 WARN L188 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2019-09-08 12:04:19,897 WARN L188 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-09-08 12:04:20,288 WARN L188 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2019-09-08 12:04:20,644 WARN L188 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2019-09-08 12:04:20,968 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2019-09-08 12:04:21,282 WARN L188 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2019-09-08 12:04:21,744 WARN L188 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 87 [2019-09-08 12:04:22,119 WARN L188 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 87 [2019-09-08 12:04:22,478 WARN L188 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2019-09-08 12:04:22,816 WARN L188 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2019-09-08 12:04:23,208 WARN L188 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-09-08 12:04:23,510 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2019-09-08 12:04:23,832 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2019-09-08 12:04:24,149 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2019-09-08 12:04:24,479 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-09-08 12:04:24,815 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2019-09-08 12:04:25,242 WARN L188 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-08 12:04:25,632 WARN L188 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-08 12:04:26,007 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-09-08 12:04:26,452 WARN L188 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2019-09-08 12:04:26,819 WARN L188 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2019-09-08 12:04:27,123 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-08 12:04:27,426 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-08 12:04:27,777 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2019-09-08 12:04:28,118 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2019-09-08 12:04:28,534 WARN L188 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2019-09-08 12:04:28,956 WARN L188 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2019-09-08 12:04:29,306 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-09-08 12:04:29,644 WARN L188 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-09-08 12:04:30,219 WARN L188 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2019-09-08 12:04:30,632 WARN L188 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2019-09-08 12:04:31,014 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2019-09-08 12:04:31,376 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2019-09-08 12:04:31,821 WARN L188 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-08 12:04:32,135 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-09-08 12:04:32,477 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-08 12:04:32,837 WARN L188 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2019-09-08 12:04:33,159 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2019-09-08 12:04:33,511 WARN L188 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2019-09-08 12:04:33,973 WARN L188 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2019-09-08 12:04:34,316 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-08 12:04:34,802 WARN L188 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 73 [2019-09-08 12:04:35,200 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2019-09-08 12:04:35,700 WARN L188 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 87 [2019-09-08 12:04:36,067 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2019-09-08 12:04:36,545 WARN L188 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 75 [2019-09-08 12:04:36,965 WARN L188 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2019-09-08 12:04:37,351 WARN L188 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-08 12:04:37,765 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-08 12:04:38,175 WARN L188 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2019-09-08 12:04:38,615 WARN L188 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-09-08 12:04:39,044 WARN L188 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2019-09-08 12:04:39,487 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2019-09-08 12:04:43,110 WARN L188 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2019-09-08 12:04:43,731 WARN L188 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2019-09-08 12:04:44,214 WARN L188 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2019-09-08 12:04:44,559 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2019-09-08 12:04:44,873 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2019-09-08 12:04:45,465 WARN L188 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 84 [2019-09-08 12:04:45,924 WARN L188 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 81 [2019-09-08 12:04:46,342 WARN L188 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2019-09-08 12:04:46,688 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2019-09-08 12:04:47,046 WARN L188 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2019-09-08 12:04:47,378 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-08 12:04:47,714 WARN L188 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2019-09-08 12:04:48,086 WARN L188 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2019-09-08 12:04:48,560 WARN L188 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2019-09-08 12:04:48,956 WARN L188 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2019-09-08 12:04:49,446 WARN L188 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 90 [2019-09-08 12:04:49,837 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2019-09-08 12:04:50,255 WARN L188 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2019-09-08 12:04:50,617 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-08 12:04:51,229 WARN L188 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 86 [2019-09-08 12:04:56,249 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2019-09-08 12:04:56,602 WARN L188 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2019-09-08 12:04:57,192 WARN L188 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2019-09-08 12:04:57,518 WARN L188 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2019-09-08 12:04:57,850 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2019-09-08 12:04:58,231 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2019-09-08 12:04:58,519 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-08 12:04:58,855 WARN L188 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2019-09-08 12:04:59,220 WARN L188 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2019-09-08 12:04:59,828 WARN L188 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2019-09-08 12:05:00,132 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2019-09-08 12:05:00,474 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2019-09-08 12:05:00,815 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2019-09-08 12:05:01,197 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-08 12:05:01,514 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2019-09-08 12:05:02,059 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2019-09-08 12:05:02,665 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-08 12:05:03,102 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-08 12:05:03,429 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-08 12:05:03,695 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-08 12:05:04,073 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-08 12:05:04,289 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-08 12:05:04,618 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2019-09-08 12:05:04,867 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-08 12:05:05,366 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-08 12:05:05,583 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-08 12:05:05,842 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2019-09-08 12:05:06,140 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-08 12:05:06,403 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2019-09-08 12:05:06,722 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2019-09-08 12:05:06,928 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-08 12:05:07,433 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2019-09-08 12:05:07,682 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-08 12:05:07,896 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-08 12:05:08,120 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-08 12:05:08,453 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2019-09-08 12:05:09,078 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-08 12:05:09,349 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2019-09-08 12:05:09,787 WARN L188 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2019-09-08 12:05:10,137 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-09-08 12:05:10,650 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-08 12:05:10,886 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2019-09-08 12:05:15,790 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2019-09-08 12:05:16,221 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-08 12:05:16,606 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-08 12:05:17,692 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-09-08 12:05:18,032 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2019-09-08 12:05:18,389 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-08 12:05:18,748 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-08 12:05:19,117 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-08 12:05:19,346 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-08 12:05:19,549 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-08 12:05:19,884 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-09-08 12:05:20,807 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2019-09-08 12:05:21,087 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-08 12:05:21,688 WARN L188 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2019-09-08 12:05:21,898 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-08 12:05:22,723 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-08 12:05:23,384 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-08 12:05:23,606 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-08 12:05:23,817 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-08 12:05:25,933 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-08 12:05:26,332 WARN L188 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2019-09-08 12:05:26,630 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2019-09-08 12:05:28,020 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2019-09-08 12:05:28,719 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2019-09-08 12:05:29,071 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2019-09-08 12:05:29,311 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2019-09-08 12:05:29,796 WARN L188 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2019-09-08 12:05:31,013 WARN L188 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-08 12:05:31,319 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-08 12:05:31,616 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-08 12:05:31,847 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-08 12:05:32,257 WARN L188 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2019-09-08 12:05:32,877 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2019-09-08 12:05:33,139 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2019-09-08 12:05:33,369 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-08 12:05:33,778 WARN L188 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 82 [2019-09-08 12:05:34,154 WARN L188 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 79 [2019-09-08 12:05:34,482 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2019-09-08 12:05:34,816 WARN L188 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2019-09-08 12:05:35,295 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2019-09-08 12:05:35,872 WARN L188 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-09-08 12:05:36,179 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2019-09-08 12:05:37,250 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-08 12:05:37,490 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-08 12:05:37,751 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-08 12:05:38,128 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2019-09-08 12:05:38,454 WARN L188 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-09-08 12:05:38,963 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-08 12:05:39,348 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2019-09-08 12:05:39,680 WARN L188 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2019-09-08 12:05:40,091 WARN L188 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 88 [2019-09-08 12:05:40,546 WARN L188 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 86 [2019-09-08 12:05:40,797 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2019-09-08 12:05:41,025 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2019-09-08 12:05:41,486 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-08 12:05:41,730 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-08 12:05:42,147 WARN L188 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-09-08 12:05:42,512 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2019-09-08 12:05:43,856 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2019-09-08 12:05:44,156 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2019-09-08 12:05:44,391 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2019-09-08 12:05:45,114 WARN L188 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 84 [2019-09-08 12:05:45,411 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2019-09-08 12:05:46,058 WARN L188 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2019-09-08 12:05:46,436 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2019-09-08 12:05:47,856 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-08 12:05:48,085 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-08 12:05:48,335 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-08 12:05:49,759 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-08 12:05:50,013 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-08 12:06:06,819 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-08 12:06:08,552 WARN L188 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-08 12:06:09,187 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-08 12:06:09,486 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-08 12:06:09,824 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-08 12:06:10,532 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-09-08 12:06:10,898 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-08 12:06:11,213 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-09-08 12:06:13,049 WARN L188 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2019-09-08 12:06:13,784 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2019-09-08 12:06:14,112 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-09-08 12:06:14,434 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-09-08 12:06:14,770 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-08 12:06:15,546 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-08 12:06:15,920 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-08 12:06:21,013 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-08 12:06:23,303 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-09-08 12:06:23,556 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-08 12:06:23,820 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-08 12:06:24,339 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-09-08 12:06:24,569 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-09-08 12:06:24,834 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-09-08 12:06:25,069 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-08 12:06:25,316 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-08 12:06:25,491 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-08 12:06:25,734 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-08 12:06:26,224 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-08 12:06:26,711 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-09-08 12:06:27,003 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2019-09-08 12:06:27,421 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-08 12:06:27,875 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-08 12:06:29,188 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-08 12:06:29,428 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2019-09-08 12:06:29,638 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2019-09-08 12:06:29,820 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-08 12:06:30,077 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-08 12:06:30,575 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2019-09-08 12:06:30,820 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-09-08 12:06:31,053 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-09-08 12:06:31,293 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-08 12:06:31,578 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2019-09-08 12:06:31,872 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-08 12:06:32,092 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2019-09-08 12:06:32,278 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-08 12:06:32,553 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-08 12:06:32,956 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-08 12:06:33,355 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-08 12:06:33,516 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2019-09-08 12:06:33,720 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2019-09-08 12:06:34,312 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-08 12:06:34,804 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-08 12:06:35,061 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2019-09-08 12:06:35,348 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-08 12:06:35,599 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-09-08 12:06:36,292 WARN L188 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-08 12:06:36,891 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-08 12:06:38,200 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-08 12:06:38,426 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2019-09-08 12:06:38,958 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2019-09-08 12:06:39,192 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-08 12:06:39,504 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-09-08 12:06:39,780 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-08 12:06:40,210 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-08 12:06:40,867 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2019-09-08 12:06:41,747 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-08 12:06:42,011 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-08 12:06:44,332 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-08 12:06:45,308 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-09-08 12:07:08,426 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-09-08 12:07:13,895 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2019-09-08 12:07:15,795 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2019-09-08 12:07:16,053 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2019-09-08 12:07:16,645 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2019-09-08 12:07:16,857 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-09-08 12:07:17,364 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-08 12:07:17,599 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2019-09-08 12:07:18,962 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2019-09-08 12:07:19,224 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2019-09-08 12:07:19,466 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2019-09-08 12:07:19,994 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2019-09-08 12:07:20,256 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2019-09-08 12:07:20,514 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2019-09-08 12:07:21,164 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-09-08 12:07:22,678 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2019-09-08 12:07:46,424 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-09-08 12:07:46,679 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2019-09-08 12:07:47,135 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-09-08 12:07:47,406 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2019-09-08 12:07:49,385 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2019-09-08 12:07:49,795 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-08 12:07:49,988 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2019-09-08 12:07:50,279 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2019-09-08 12:07:50,695 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2019-09-08 12:07:51,023 WARN L188 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-09-08 12:07:51,313 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2019-09-08 12:07:51,725 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2019-09-08 12:07:52,121 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2019-09-08 12:07:52,404 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2019-09-08 12:07:54,242 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-08 12:07:54,634 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2019-09-08 12:07:55,077 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-09-08 12:07:55,504 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2019-09-08 12:07:55,921 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-09-08 12:08:08,126 WARN L188 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2019-09-08 12:08:10,896 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-09-08 12:08:11,501 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2019-09-08 12:08:27,189 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2019-09-08 12:08:28,482 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-08 12:08:29,120 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2019-09-08 12:08:30,231 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-08 12:08:30,611 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-08 12:08:30,981 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2019-09-08 12:08:31,466 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2019-09-08 12:08:31,823 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2019-09-08 12:08:32,929 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-08 12:08:33,309 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-08 12:08:33,923 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 84 [2019-09-08 12:09:10,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:09:10,462 INFO L93 Difference]: Finished difference Result 1188650 states and 1661594 transitions. [2019-09-08 12:09:10,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 374 states. [2019-09-08 12:09:10,462 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 101 [2019-09-08 12:09:10,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:09:12,265 INFO L225 Difference]: With dead ends: 1188650 [2019-09-08 12:09:12,266 INFO L226 Difference]: Without dead ends: 1080907 [2019-09-08 12:09:12,822 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75987 ImplicationChecksByTransitivity, 107.0s TimeCoverageRelationStatistics Valid=19381, Invalid=133109, Unknown=0, NotChecked=0, Total=152490 [2019-09-08 12:09:13,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080907 states. [2019-09-08 12:10:08,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080907 to 228792. [2019-09-08 12:10:08,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228792 states. [2019-09-08 12:10:08,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228792 states to 228792 states and 316317 transitions. [2019-09-08 12:10:08,754 INFO L78 Accepts]: Start accepts. Automaton has 228792 states and 316317 transitions. Word has length 101 [2019-09-08 12:10:08,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:10:08,754 INFO L475 AbstractCegarLoop]: Abstraction has 228792 states and 316317 transitions. [2019-09-08 12:10:08,755 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-08 12:10:08,755 INFO L276 IsEmpty]: Start isEmpty. Operand 228792 states and 316317 transitions. [2019-09-08 12:10:08,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-09-08 12:10:08,759 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:10:08,760 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:10:08,760 INFO L418 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:10:08,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:10:08,760 INFO L82 PathProgramCache]: Analyzing trace with hash -970174889, now seen corresponding path program 1 times [2019-09-08 12:10:08,760 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:10:08,761 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:10:08,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:10:08,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:10:08,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:10:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:10:09,009 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 12:10:09,010 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 12:10:09,010 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) [2019-09-08 12:10:09,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 12:10:09,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:10:09,164 INFO L256 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-08 12:10:09,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 12:10:09,297 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 12:10:09,554 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 12:10:09,561 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 12:10:09,561 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2019-09-08 12:10:09,562 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-08 12:10:09,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-08 12:10:09,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2019-09-08 12:10:09,563 INFO L87 Difference]: Start difference. First operand 228792 states and 316317 transitions. Second operand 17 states. [2019-09-08 12:14:39,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:14:39,515 INFO L93 Difference]: Finished difference Result 1418959 states and 1948877 transitions. [2019-09-08 12:14:39,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-09-08 12:14:39,515 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 102 [2019-09-08 12:14:39,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:14:41,346 INFO L225 Difference]: With dead ends: 1418959 [2019-09-08 12:14:41,346 INFO L226 Difference]: Without dead ends: 1211897 [2019-09-08 12:14:41,633 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=665, Invalid=1987, Unknown=0, NotChecked=0, Total=2652 [2019-09-08 12:14:42,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211897 states.