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.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 12:11:14,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 12:11:14,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 12:11:14,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 12:11:14,603 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 12:11:14,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 12:11:14,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 12:11:14,608 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 12:11:14,609 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 12:11:14,610 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 12:11:14,611 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 12:11:14,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 12:11:14,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 12:11:14,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 12:11:14,614 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 12:11:14,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 12:11:14,616 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 12:11:14,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 12:11:14,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 12:11:14,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 12:11:14,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 12:11:14,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 12:11:14,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 12:11:14,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 12:11:14,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 12:11:14,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 12:11:14,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 12:11:14,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 12:11:14,637 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 12:11:14,651 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 12:11:14,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 12:11:14,653 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 12:11:14,653 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 12:11:14,653 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 12:11:14,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 12:11:14,654 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 12:11:14,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 12:11:14,654 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 12:11:14,654 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 12:11:14,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 12:11:14,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 12:11:14,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 12:11:14,655 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 12:11:14,655 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 12:11:14,656 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 12:11:14,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 12:11:14,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 12:11:14,656 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 12:11:14,656 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 12:11:14,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 12:11:14,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 12:11:14,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 12:11:14,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 12:11:14,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 12:11:14,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 12:11:14,658 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 12:11:14,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 12:11:14,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 12:11:14,686 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 12:11:14,699 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 12:11:14,702 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 12:11:14,703 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 12:11:14,704 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 12:11:14,705 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2019-09-08 12:11:14,763 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fbe8978f/dcfa163e6f674a3782b91a6b89fd9277/FLAGa853eccd6 [2019-09-08 12:11:15,293 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 12:11:15,294 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2019-09-08 12:11:15,315 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fbe8978f/dcfa163e6f674a3782b91a6b89fd9277/FLAGa853eccd6 [2019-09-08 12:11:15,588 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fbe8978f/dcfa163e6f674a3782b91a6b89fd9277 [2019-09-08 12:11:15,600 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 12:11:15,602 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 12:11:15,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 12:11:15,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 12:11:15,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 12:11:15,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 12:11:15" (1/1) ... [2019-09-08 12:11:15,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@122e48ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 12:11:15, skipping insertion in model container [2019-09-08 12:11:15,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 12:11:15" (1/1) ... [2019-09-08 12:11:15,619 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 12:11:15,676 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 12:11:15,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 12:11:16,074 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 12:11:16,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 12:11:16,192 INFO L192 MainTranslator]: Completed translation [2019-09-08 12:11:16,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 12:11:16 WrapperNode [2019-09-08 12:11:16,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 12:11:16,193 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 12:11:16,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 12:11:16,194 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 12:11:16,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 12:11:16" (1/1) ... [2019-09-08 12:11:16,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 12:11:16" (1/1) ... [2019-09-08 12:11:16,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 12:11:16" (1/1) ... [2019-09-08 12:11:16,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 12:11:16" (1/1) ... [2019-09-08 12:11:16,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 12:11:16" (1/1) ... [2019-09-08 12:11:16,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 12:11:16" (1/1) ... [2019-09-08 12:11:16,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 12:11:16" (1/1) ... [2019-09-08 12:11:16,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 12:11:16,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 12:11:16,255 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 12:11:16,255 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 12:11:16,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 12:11:16" (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 12:11:16,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 12:11:16,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 12:11:16,306 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 12:11:16,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 12:11:16,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-08 12:11:16,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-08 12:11:16,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-09-08 12:11:16,307 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-09-08 12:11:16,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-08 12:11:16,308 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-09-08 12:11:16,308 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-09-08 12:11:16,308 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-09-08 12:11:16,308 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-09-08 12:11:16,309 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-09-08 12:11:16,309 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2019-09-08 12:11:16,309 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2019-09-08 12:11:16,309 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-09-08 12:11:16,309 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-09-08 12:11:16,310 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 12:11:16,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 12:11:16,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 12:11:16,964 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 12:11:16,965 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-08 12:11:16,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 12:11:16 BoogieIcfgContainer [2019-09-08 12:11:16,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 12:11:16,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 12:11:16,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 12:11:16,972 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 12:11:16,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 12:11:15" (1/3) ... [2019-09-08 12:11:16,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@833aee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 12:11:16, skipping insertion in model container [2019-09-08 12:11:16,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 12:11:16" (2/3) ... [2019-09-08 12:11:16,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@833aee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 12:11:16, skipping insertion in model container [2019-09-08 12:11:16,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 12:11:16" (3/3) ... [2019-09-08 12:11:16,980 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2019-09-08 12:11:16,991 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 12:11:17,017 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 12:11:17,036 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 12:11:17,085 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 12:11:17,085 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 12:11:17,086 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 12:11:17,086 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 12:11:17,086 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 12:11:17,086 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 12:11:17,087 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 12:11:17,087 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 12:11:17,087 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 12:11:17,107 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states. [2019-09-08 12:11:17,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-08 12:11:17,116 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:11:17,117 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 12:11:17,119 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:11:17,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:11:17,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1817942927, now seen corresponding path program 1 times [2019-09-08 12:11:17,126 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:11:17,126 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:11:17,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:17,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:11:17,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:11:17,508 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 12:11:17,511 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:11:17,512 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 12:11:17,518 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 12:11:17,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 12:11:17,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 12:11:17,536 INFO L87 Difference]: Start difference. First operand 104 states. Second operand 3 states. [2019-09-08 12:11:17,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:11:17,616 INFO L93 Difference]: Finished difference Result 228 states and 363 transitions. [2019-09-08 12:11:17,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 12:11:17,619 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2019-09-08 12:11:17,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:11:17,633 INFO L225 Difference]: With dead ends: 228 [2019-09-08 12:11:17,634 INFO L226 Difference]: Without dead ends: 154 [2019-09-08 12:11:17,638 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 12:11:17,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-09-08 12:11:17,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 152. [2019-09-08 12:11:17,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2019-09-08 12:11:17,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 219 transitions. [2019-09-08 12:11:17,700 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 219 transitions. Word has length 64 [2019-09-08 12:11:17,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:11:17,701 INFO L475 AbstractCegarLoop]: Abstraction has 152 states and 219 transitions. [2019-09-08 12:11:17,701 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 12:11:17,702 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 219 transitions. [2019-09-08 12:11:17,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-08 12:11:17,704 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:11:17,705 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 12:11:17,705 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:11:17,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:11:17,706 INFO L82 PathProgramCache]: Analyzing trace with hash 344530776, now seen corresponding path program 1 times [2019-09-08 12:11:17,706 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:11:17,706 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:11:17,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:17,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:11:17,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:17,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:11:17,914 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 12:11:17,915 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:11:17,915 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 12:11:17,917 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 12:11:17,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 12:11:17,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 12:11:17,918 INFO L87 Difference]: Start difference. First operand 152 states and 219 transitions. Second operand 3 states. [2019-09-08 12:11:17,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:11:17,990 INFO L93 Difference]: Finished difference Result 364 states and 555 transitions. [2019-09-08 12:11:17,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 12:11:17,994 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2019-09-08 12:11:17,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:11:18,000 INFO L225 Difference]: With dead ends: 364 [2019-09-08 12:11:18,001 INFO L226 Difference]: Without dead ends: 250 [2019-09-08 12:11:18,003 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 12:11:18,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2019-09-08 12:11:18,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 248. [2019-09-08 12:11:18,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2019-09-08 12:11:18,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 371 transitions. [2019-09-08 12:11:18,066 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 371 transitions. Word has length 65 [2019-09-08 12:11:18,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:11:18,067 INFO L475 AbstractCegarLoop]: Abstraction has 248 states and 371 transitions. [2019-09-08 12:11:18,067 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 12:11:18,067 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 371 transitions. [2019-09-08 12:11:18,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-08 12:11:18,071 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:11:18,071 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 12:11:18,072 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:11:18,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:11:18,072 INFO L82 PathProgramCache]: Analyzing trace with hash -288418835, now seen corresponding path program 1 times [2019-09-08 12:11:18,072 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:11:18,073 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:11:18,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:18,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:11:18,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:18,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:11:18,214 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 12:11:18,215 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:11:18,215 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 12:11:18,216 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 12:11:18,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 12:11:18,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 12:11:18,217 INFO L87 Difference]: Start difference. First operand 248 states and 371 transitions. Second operand 3 states. [2019-09-08 12:11:18,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:11:18,277 INFO L93 Difference]: Finished difference Result 636 states and 985 transitions. [2019-09-08 12:11:18,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 12:11:18,280 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2019-09-08 12:11:18,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:11:18,286 INFO L225 Difference]: With dead ends: 636 [2019-09-08 12:11:18,287 INFO L226 Difference]: Without dead ends: 426 [2019-09-08 12:11:18,290 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 12:11:18,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2019-09-08 12:11:18,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 424. [2019-09-08 12:11:18,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2019-09-08 12:11:18,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 647 transitions. [2019-09-08 12:11:18,365 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 647 transitions. Word has length 66 [2019-09-08 12:11:18,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:11:18,365 INFO L475 AbstractCegarLoop]: Abstraction has 424 states and 647 transitions. [2019-09-08 12:11:18,366 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 12:11:18,366 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 647 transitions. [2019-09-08 12:11:18,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-09-08 12:11:18,367 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:11:18,368 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 12:11:18,368 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:11:18,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:11:18,368 INFO L82 PathProgramCache]: Analyzing trace with hash -2091271574, now seen corresponding path program 1 times [2019-09-08 12:11:18,369 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:11:18,369 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:11:18,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:18,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:11:18,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:11:18,472 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 12:11:18,473 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:11:18,473 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 12:11:18,473 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 12:11:18,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 12:11:18,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 12:11:18,474 INFO L87 Difference]: Start difference. First operand 424 states and 647 transitions. Second operand 3 states. [2019-09-08 12:11:18,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:11:18,527 INFO L93 Difference]: Finished difference Result 1132 states and 1761 transitions. [2019-09-08 12:11:18,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 12:11:18,528 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2019-09-08 12:11:18,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:11:18,536 INFO L225 Difference]: With dead ends: 1132 [2019-09-08 12:11:18,536 INFO L226 Difference]: Without dead ends: 746 [2019-09-08 12:11:18,539 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 12:11:18,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2019-09-08 12:11:18,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 744. [2019-09-08 12:11:18,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2019-09-08 12:11:18,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1143 transitions. [2019-09-08 12:11:18,590 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1143 transitions. Word has length 67 [2019-09-08 12:11:18,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:11:18,591 INFO L475 AbstractCegarLoop]: Abstraction has 744 states and 1143 transitions. [2019-09-08 12:11:18,591 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 12:11:18,591 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1143 transitions. [2019-09-08 12:11:18,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-08 12:11:18,593 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:11:18,593 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 12:11:18,593 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:11:18,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:11:18,594 INFO L82 PathProgramCache]: Analyzing trace with hash -900755135, now seen corresponding path program 1 times [2019-09-08 12:11:18,594 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:11:18,594 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:11:18,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:18,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:11:18,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:18,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:11:18,731 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 12:11:18,732 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:11:18,732 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 12:11:18,733 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 12:11:18,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 12:11:18,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 12:11:18,734 INFO L87 Difference]: Start difference. First operand 744 states and 1143 transitions. Second operand 5 states. [2019-09-08 12:11:18,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:11:18,949 INFO L93 Difference]: Finished difference Result 1450 states and 2248 transitions. [2019-09-08 12:11:18,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 12:11:18,950 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2019-09-08 12:11:18,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:11:18,954 INFO L225 Difference]: With dead ends: 1450 [2019-09-08 12:11:18,955 INFO L226 Difference]: Without dead ends: 744 [2019-09-08 12:11:18,957 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 12:11:18,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2019-09-08 12:11:19,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2019-09-08 12:11:19,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2019-09-08 12:11:19,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1127 transitions. [2019-09-08 12:11:19,005 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1127 transitions. Word has length 68 [2019-09-08 12:11:19,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:11:19,006 INFO L475 AbstractCegarLoop]: Abstraction has 744 states and 1127 transitions. [2019-09-08 12:11:19,006 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 12:11:19,006 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1127 transitions. [2019-09-08 12:11:19,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-08 12:11:19,007 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:11:19,007 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 12:11:19,008 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:11:19,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:11:19,008 INFO L82 PathProgramCache]: Analyzing trace with hash 426630054, now seen corresponding path program 1 times [2019-09-08 12:11:19,008 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:11:19,008 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:11:19,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:19,010 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:11:19,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:11:19,137 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 12:11:19,138 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:11:19,138 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 12:11:19,139 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 12:11:19,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 12:11:19,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 12:11:19,140 INFO L87 Difference]: Start difference. First operand 744 states and 1127 transitions. Second operand 5 states. [2019-09-08 12:11:19,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:11:19,295 INFO L93 Difference]: Finished difference Result 1450 states and 2216 transitions. [2019-09-08 12:11:19,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 12:11:19,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2019-09-08 12:11:19,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:11:19,300 INFO L225 Difference]: With dead ends: 1450 [2019-09-08 12:11:19,301 INFO L226 Difference]: Without dead ends: 744 [2019-09-08 12:11:19,303 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 12:11:19,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2019-09-08 12:11:19,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2019-09-08 12:11:19,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2019-09-08 12:11:19,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1119 transitions. [2019-09-08 12:11:19,355 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1119 transitions. Word has length 68 [2019-09-08 12:11:19,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:11:19,355 INFO L475 AbstractCegarLoop]: Abstraction has 744 states and 1119 transitions. [2019-09-08 12:11:19,355 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 12:11:19,356 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1119 transitions. [2019-09-08 12:11:19,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-08 12:11:19,357 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:11:19,357 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 12:11:19,357 INFO L418 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:11:19,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:11:19,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1700498059, now seen corresponding path program 1 times [2019-09-08 12:11:19,358 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:11:19,358 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:11:19,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:19,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:11:19,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:11:19,429 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 12:11:19,430 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:11:19,430 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 12:11:19,430 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 12:11:19,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 12:11:19,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 12:11:19,431 INFO L87 Difference]: Start difference. First operand 744 states and 1119 transitions. Second operand 5 states. [2019-09-08 12:11:19,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:11:19,616 INFO L93 Difference]: Finished difference Result 1450 states and 2200 transitions. [2019-09-08 12:11:19,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 12:11:19,617 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2019-09-08 12:11:19,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:11:19,621 INFO L225 Difference]: With dead ends: 1450 [2019-09-08 12:11:19,621 INFO L226 Difference]: Without dead ends: 744 [2019-09-08 12:11:19,623 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 12:11:19,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2019-09-08 12:11:19,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2019-09-08 12:11:19,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2019-09-08 12:11:19,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1111 transitions. [2019-09-08 12:11:19,671 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1111 transitions. Word has length 68 [2019-09-08 12:11:19,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:11:19,673 INFO L475 AbstractCegarLoop]: Abstraction has 744 states and 1111 transitions. [2019-09-08 12:11:19,673 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 12:11:19,673 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1111 transitions. [2019-09-08 12:11:19,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-08 12:11:19,680 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:11:19,681 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 12:11:19,682 INFO L418 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:11:19,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:11:19,683 INFO L82 PathProgramCache]: Analyzing trace with hash 253468464, now seen corresponding path program 1 times [2019-09-08 12:11:19,683 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:11:19,683 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:11:19,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:19,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:11:19,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:11:19,859 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 12:11:19,860 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:11:19,860 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 12:11:19,861 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 12:11:19,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 12:11:19,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-09-08 12:11:19,863 INFO L87 Difference]: Start difference. First operand 744 states and 1111 transitions. Second operand 7 states. [2019-09-08 12:11:20,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:11:20,488 INFO L93 Difference]: Finished difference Result 6392 states and 9695 transitions. [2019-09-08 12:11:20,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 12:11:20,489 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2019-09-08 12:11:20,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:11:20,525 INFO L225 Difference]: With dead ends: 6392 [2019-09-08 12:11:20,525 INFO L226 Difference]: Without dead ends: 5686 [2019-09-08 12:11:20,529 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 12:11:20,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5686 states. [2019-09-08 12:11:20,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5686 to 2152. [2019-09-08 12:11:20,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2152 states. [2019-09-08 12:11:20,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2152 states to 2152 states and 3223 transitions. [2019-09-08 12:11:20,850 INFO L78 Accepts]: Start accepts. Automaton has 2152 states and 3223 transitions. Word has length 68 [2019-09-08 12:11:20,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:11:20,850 INFO L475 AbstractCegarLoop]: Abstraction has 2152 states and 3223 transitions. [2019-09-08 12:11:20,850 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 12:11:20,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2152 states and 3223 transitions. [2019-09-08 12:11:20,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-08 12:11:20,851 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:11:20,852 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 12:11:20,852 INFO L418 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:11:20,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:11:20,852 INFO L82 PathProgramCache]: Analyzing trace with hash -2103084374, now seen corresponding path program 1 times [2019-09-08 12:11:20,852 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:11:20,853 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:11:20,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:20,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:11:20,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:11:21,157 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 12:11:21,158 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:11:21,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 12:11:21,158 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 12:11:21,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 12:11:21,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2019-09-08 12:11:21,159 INFO L87 Difference]: Start difference. First operand 2152 states and 3223 transitions. Second operand 7 states. [2019-09-08 12:11:21,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:11:21,563 INFO L93 Difference]: Finished difference Result 4976 states and 7483 transitions. [2019-09-08 12:11:21,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 12:11:21,564 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-09-08 12:11:21,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:11:21,580 INFO L225 Difference]: With dead ends: 4976 [2019-09-08 12:11:21,580 INFO L226 Difference]: Without dead ends: 2862 [2019-09-08 12:11:21,586 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 12:11:21,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2019-09-08 12:11:21,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 2152. [2019-09-08 12:11:21,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2152 states. [2019-09-08 12:11:21,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2152 states to 2152 states and 3207 transitions. [2019-09-08 12:11:21,777 INFO L78 Accepts]: Start accepts. Automaton has 2152 states and 3207 transitions. Word has length 70 [2019-09-08 12:11:21,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:11:21,777 INFO L475 AbstractCegarLoop]: Abstraction has 2152 states and 3207 transitions. [2019-09-08 12:11:21,777 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 12:11:21,777 INFO L276 IsEmpty]: Start isEmpty. Operand 2152 states and 3207 transitions. [2019-09-08 12:11:21,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-08 12:11:21,778 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:11:21,779 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 12:11:21,779 INFO L418 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:11:21,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:11:21,779 INFO L82 PathProgramCache]: Analyzing trace with hash -2123133717, now seen corresponding path program 1 times [2019-09-08 12:11:21,780 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:11:21,780 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:11:21,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:21,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:11:21,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:21,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:11:21,890 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 12:11:21,890 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:11:21,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 12:11:21,891 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 12:11:21,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 12:11:21,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 12:11:21,892 INFO L87 Difference]: Start difference. First operand 2152 states and 3207 transitions. Second operand 3 states. [2019-09-08 12:11:22,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:11:22,266 INFO L93 Difference]: Finished difference Result 6124 states and 9097 transitions. [2019-09-08 12:11:22,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 12:11:22,266 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2019-09-08 12:11:22,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:11:22,288 INFO L225 Difference]: With dead ends: 6124 [2019-09-08 12:11:22,290 INFO L226 Difference]: Without dead ends: 4010 [2019-09-08 12:11:22,297 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 12:11:22,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4010 states. [2019-09-08 12:11:22,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4010 to 3960. [2019-09-08 12:11:22,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3960 states. [2019-09-08 12:11:22,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3960 states to 3960 states and 5751 transitions. [2019-09-08 12:11:22,707 INFO L78 Accepts]: Start accepts. Automaton has 3960 states and 5751 transitions. Word has length 70 [2019-09-08 12:11:22,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:11:22,708 INFO L475 AbstractCegarLoop]: Abstraction has 3960 states and 5751 transitions. [2019-09-08 12:11:22,708 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 12:11:22,708 INFO L276 IsEmpty]: Start isEmpty. Operand 3960 states and 5751 transitions. [2019-09-08 12:11:22,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-09-08 12:11:22,709 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:11:22,710 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 12:11:22,710 INFO L418 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:11:22,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:11:22,710 INFO L82 PathProgramCache]: Analyzing trace with hash -48803801, now seen corresponding path program 1 times [2019-09-08 12:11:22,711 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:11:22,711 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:11:22,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:22,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:11:22,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:22,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:11:22,762 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 12:11:22,762 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:11:22,762 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 12:11:22,763 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 12:11:22,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 12:11:22,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 12:11:22,764 INFO L87 Difference]: Start difference. First operand 3960 states and 5751 transitions. Second operand 3 states. [2019-09-08 12:11:23,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:11:23,141 INFO L93 Difference]: Finished difference Result 7711 states and 11373 transitions. [2019-09-08 12:11:23,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 12:11:23,141 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2019-09-08 12:11:23,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:11:23,171 INFO L225 Difference]: With dead ends: 7711 [2019-09-08 12:11:23,172 INFO L226 Difference]: Without dead ends: 5596 [2019-09-08 12:11:23,180 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 12:11:23,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5596 states. [2019-09-08 12:11:23,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5596 to 5594. [2019-09-08 12:11:23,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5594 states. [2019-09-08 12:11:23,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5594 states to 5594 states and 8153 transitions. [2019-09-08 12:11:23,640 INFO L78 Accepts]: Start accepts. Automaton has 5594 states and 8153 transitions. Word has length 71 [2019-09-08 12:11:23,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:11:23,641 INFO L475 AbstractCegarLoop]: Abstraction has 5594 states and 8153 transitions. [2019-09-08 12:11:23,641 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 12:11:23,641 INFO L276 IsEmpty]: Start isEmpty. Operand 5594 states and 8153 transitions. [2019-09-08 12:11:23,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-09-08 12:11:23,642 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:11:23,642 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 12:11:23,642 INFO L418 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:11:23,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:11:23,643 INFO L82 PathProgramCache]: Analyzing trace with hash -773015508, now seen corresponding path program 1 times [2019-09-08 12:11:23,643 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:11:23,643 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:11:23,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:23,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:11:23,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:11:23,742 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 12:11:23,742 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:11:23,742 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 12:11:23,743 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 12:11:23,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 12:11:23,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 12:11:23,744 INFO L87 Difference]: Start difference. First operand 5594 states and 8153 transitions. Second operand 5 states. [2019-09-08 12:11:24,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:11:24,590 INFO L93 Difference]: Finished difference Result 10440 states and 15167 transitions. [2019-09-08 12:11:24,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-08 12:11:24,591 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2019-09-08 12:11:24,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:11:24,662 INFO L225 Difference]: With dead ends: 10440 [2019-09-08 12:11:24,662 INFO L226 Difference]: Without dead ends: 10438 [2019-09-08 12:11:24,668 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 12:11:24,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10438 states. [2019-09-08 12:11:25,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10438 to 5818. [2019-09-08 12:11:25,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5818 states. [2019-09-08 12:11:25,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5818 states to 5818 states and 8361 transitions. [2019-09-08 12:11:25,244 INFO L78 Accepts]: Start accepts. Automaton has 5818 states and 8361 transitions. Word has length 71 [2019-09-08 12:11:25,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:11:25,245 INFO L475 AbstractCegarLoop]: Abstraction has 5818 states and 8361 transitions. [2019-09-08 12:11:25,245 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 12:11:25,245 INFO L276 IsEmpty]: Start isEmpty. Operand 5818 states and 8361 transitions. [2019-09-08 12:11:25,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-08 12:11:25,249 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:11:25,249 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 12:11:25,250 INFO L418 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:11:25,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:11:25,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1754912134, now seen corresponding path program 1 times [2019-09-08 12:11:25,250 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:11:25,250 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:11:25,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:25,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:11:25,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:11:25,390 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 12:11:25,390 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:11:25,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 12:11:25,391 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 12:11:25,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 12:11:25,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-09-08 12:11:25,392 INFO L87 Difference]: Start difference. First operand 5818 states and 8361 transitions. Second operand 7 states. [2019-09-08 12:11:26,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:11:26,873 INFO L93 Difference]: Finished difference Result 24518 states and 35327 transitions. [2019-09-08 12:11:26,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 12:11:26,873 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2019-09-08 12:11:26,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:11:26,925 INFO L225 Difference]: With dead ends: 24518 [2019-09-08 12:11:26,925 INFO L226 Difference]: Without dead ends: 22564 [2019-09-08 12:11:26,938 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 12:11:26,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22564 states. [2019-09-08 12:11:28,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22564 to 9690. [2019-09-08 12:11:28,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9690 states. [2019-09-08 12:11:28,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9690 states to 9690 states and 13833 transitions. [2019-09-08 12:11:28,039 INFO L78 Accepts]: Start accepts. Automaton has 9690 states and 13833 transitions. Word has length 98 [2019-09-08 12:11:28,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:11:28,040 INFO L475 AbstractCegarLoop]: Abstraction has 9690 states and 13833 transitions. [2019-09-08 12:11:28,040 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 12:11:28,040 INFO L276 IsEmpty]: Start isEmpty. Operand 9690 states and 13833 transitions. [2019-09-08 12:11:28,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-08 12:11:28,045 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:11:28,045 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 12:11:28,045 INFO L418 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:11:28,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:11:28,046 INFO L82 PathProgramCache]: Analyzing trace with hash -255171438, now seen corresponding path program 1 times [2019-09-08 12:11:28,046 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:11:28,046 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:11:28,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:28,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:11:28,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:11:28,217 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 12:11:28,218 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:11:28,218 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 12:11:28,218 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 12:11:28,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 12:11:28,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-09-08 12:11:28,219 INFO L87 Difference]: Start difference. First operand 9690 states and 13833 transitions. Second operand 7 states. [2019-09-08 12:11:29,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:11:29,664 INFO L93 Difference]: Finished difference Result 24438 states and 35055 transitions. [2019-09-08 12:11:29,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 12:11:29,664 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2019-09-08 12:11:29,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:11:29,705 INFO L225 Difference]: With dead ends: 24438 [2019-09-08 12:11:29,705 INFO L226 Difference]: Without dead ends: 18660 [2019-09-08 12:11:29,724 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 12:11:29,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18660 states. [2019-09-08 12:11:31,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18660 to 13514. [2019-09-08 12:11:31,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13514 states. [2019-09-08 12:11:31,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13514 states to 13514 states and 19257 transitions. [2019-09-08 12:11:31,246 INFO L78 Accepts]: Start accepts. Automaton has 13514 states and 19257 transitions. Word has length 98 [2019-09-08 12:11:31,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:11:31,247 INFO L475 AbstractCegarLoop]: Abstraction has 13514 states and 19257 transitions. [2019-09-08 12:11:31,247 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 12:11:31,247 INFO L276 IsEmpty]: Start isEmpty. Operand 13514 states and 19257 transitions. [2019-09-08 12:11:31,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-08 12:11:31,252 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:11:31,252 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 12:11:31,253 INFO L418 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:11:31,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:11:31,253 INFO L82 PathProgramCache]: Analyzing trace with hash -231426216, now seen corresponding path program 1 times [2019-09-08 12:11:31,253 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:11:31,253 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:11:31,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:31,255 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:11:31,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:31,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:11:31,317 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 12:11:31,317 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:11:31,317 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 12:11:31,318 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 12:11:31,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 12:11:31,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 12:11:31,318 INFO L87 Difference]: Start difference. First operand 13514 states and 19257 transitions. Second operand 3 states. [2019-09-08 12:11:31,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:11:31,921 INFO L93 Difference]: Finished difference Result 22740 states and 32617 transitions. [2019-09-08 12:11:31,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 12:11:31,921 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2019-09-08 12:11:31,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:11:31,943 INFO L225 Difference]: With dead ends: 22740 [2019-09-08 12:11:31,943 INFO L226 Difference]: Without dead ends: 9266 [2019-09-08 12:11:31,968 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 12:11:31,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9266 states. [2019-09-08 12:11:32,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9266 to 9264. [2019-09-08 12:11:32,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9264 states. [2019-09-08 12:11:32,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9264 states to 9264 states and 13286 transitions. [2019-09-08 12:11:32,762 INFO L78 Accepts]: Start accepts. Automaton has 9264 states and 13286 transitions. Word has length 98 [2019-09-08 12:11:32,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:11:32,763 INFO L475 AbstractCegarLoop]: Abstraction has 9264 states and 13286 transitions. [2019-09-08 12:11:32,763 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 12:11:32,763 INFO L276 IsEmpty]: Start isEmpty. Operand 9264 states and 13286 transitions. [2019-09-08 12:11:32,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-09-08 12:11:32,766 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:11:32,767 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 12:11:32,767 INFO L418 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:11:32,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:11:32,767 INFO L82 PathProgramCache]: Analyzing trace with hash 544702546, now seen corresponding path program 1 times [2019-09-08 12:11:32,767 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:11:32,767 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:11:32,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:32,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:11:32,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:32,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:11:32,903 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 12:11:32,903 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:11:32,904 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 12:11:32,904 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 12:11:32,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 12:11:32,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-08 12:11:32,905 INFO L87 Difference]: Start difference. First operand 9264 states and 13286 transitions. Second operand 7 states. [2019-09-08 12:11:34,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:11:34,130 INFO L93 Difference]: Finished difference Result 19772 states and 28492 transitions. [2019-09-08 12:11:34,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 12:11:34,130 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2019-09-08 12:11:34,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:11:34,160 INFO L225 Difference]: With dead ends: 19772 [2019-09-08 12:11:34,160 INFO L226 Difference]: Without dead ends: 15834 [2019-09-08 12:11:34,173 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 12:11:34,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15834 states. [2019-09-08 12:11:35,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15834 to 11888. [2019-09-08 12:11:35,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11888 states. [2019-09-08 12:11:35,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11888 states to 11888 states and 17030 transitions. [2019-09-08 12:11:35,235 INFO L78 Accepts]: Start accepts. Automaton has 11888 states and 17030 transitions. Word has length 99 [2019-09-08 12:11:35,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:11:35,235 INFO L475 AbstractCegarLoop]: Abstraction has 11888 states and 17030 transitions. [2019-09-08 12:11:35,236 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 12:11:35,236 INFO L276 IsEmpty]: Start isEmpty. Operand 11888 states and 17030 transitions. [2019-09-08 12:11:35,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-09-08 12:11:35,239 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:11:35,239 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 12:11:35,239 INFO L418 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:11:35,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:11:35,240 INFO L82 PathProgramCache]: Analyzing trace with hash 148431430, now seen corresponding path program 1 times [2019-09-08 12:11:35,240 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:11:35,240 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:11:35,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:35,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:11:35,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:35,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:11:35,398 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 12:11:35,399 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:11:35,399 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 12:11:35,399 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 12:11:35,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 12:11:35,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-09-08 12:11:35,400 INFO L87 Difference]: Start difference. First operand 11888 states and 17030 transitions. Second operand 7 states. [2019-09-08 12:11:37,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:11:37,124 INFO L93 Difference]: Finished difference Result 22396 states and 32236 transitions. [2019-09-08 12:11:37,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 12:11:37,124 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2019-09-08 12:11:37,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:11:37,148 INFO L225 Difference]: With dead ends: 22396 [2019-09-08 12:11:37,148 INFO L226 Difference]: Without dead ends: 18458 [2019-09-08 12:11:37,159 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 12:11:37,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18458 states. [2019-09-08 12:11:38,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18458 to 14512. [2019-09-08 12:11:38,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14512 states. [2019-09-08 12:11:38,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14512 states to 14512 states and 20774 transitions. [2019-09-08 12:11:38,072 INFO L78 Accepts]: Start accepts. Automaton has 14512 states and 20774 transitions. Word has length 99 [2019-09-08 12:11:38,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:11:38,072 INFO L475 AbstractCegarLoop]: Abstraction has 14512 states and 20774 transitions. [2019-09-08 12:11:38,072 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 12:11:38,073 INFO L276 IsEmpty]: Start isEmpty. Operand 14512 states and 20774 transitions. [2019-09-08 12:11:38,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-09-08 12:11:38,076 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:11:38,076 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 12:11:38,076 INFO L418 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:11:38,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:11:38,077 INFO L82 PathProgramCache]: Analyzing trace with hash 842687034, now seen corresponding path program 1 times [2019-09-08 12:11:38,077 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:11:38,077 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:11:38,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:38,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:11:38,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:38,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:11:38,160 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 12:11:38,161 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 12:11:38,161 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 12:11:38,178 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 12:11:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:11:38,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-08 12:11:38,346 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 12:11:38,546 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 12:11:38,562 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 12:11:38,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2019-09-08 12:11:38,565 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-08 12:11:38,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-08 12:11:38,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-09-08 12:11:38,566 INFO L87 Difference]: Start difference. First operand 14512 states and 20774 transitions. Second operand 10 states. [2019-09-08 12:11:41,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:11:41,640 INFO L93 Difference]: Finished difference Result 34228 states and 49672 transitions. [2019-09-08 12:11:41,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-09-08 12:11:41,641 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 99 [2019-09-08 12:11:41,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:11:41,763 INFO L225 Difference]: With dead ends: 34228 [2019-09-08 12:11:41,763 INFO L226 Difference]: Without dead ends: 31602 [2019-09-08 12:11:41,779 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 12:11:41,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31602 states. [2019-09-08 12:11:43,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31602 to 19760. [2019-09-08 12:11:43,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19760 states. [2019-09-08 12:11:43,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19760 states to 19760 states and 28358 transitions. [2019-09-08 12:11:43,672 INFO L78 Accepts]: Start accepts. Automaton has 19760 states and 28358 transitions. Word has length 99 [2019-09-08 12:11:43,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:11:43,673 INFO L475 AbstractCegarLoop]: Abstraction has 19760 states and 28358 transitions. [2019-09-08 12:11:43,673 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-08 12:11:43,673 INFO L276 IsEmpty]: Start isEmpty. Operand 19760 states and 28358 transitions. [2019-09-08 12:11:43,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-09-08 12:11:43,677 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:11:43,677 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 12:11:43,678 INFO L418 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:11:43,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:11:43,678 INFO L82 PathProgramCache]: Analyzing trace with hash -514383113, now seen corresponding path program 1 times [2019-09-08 12:11:43,678 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:11:43,678 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:11:43,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:43,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:11:43,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:11:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:11:43,913 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 12:11:43,913 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 12:11:43,913 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) [2019-09-08 12:11:43,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 12:11:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:11:44,041 INFO L256 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-08 12:11:44,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 12:11:44,330 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Exception during sending of exit command (exit): Stream closed [2019-09-08 12:11:44,335 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 12:11:44,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 4] total 12 [2019-09-08 12:11:44,337 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-08 12:11:44,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-08 12:11:44,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-09-08 12:11:44,338 INFO L87 Difference]: Start difference. First operand 19760 states and 28358 transitions. Second operand 12 states. [2019-09-08 12:11:56,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:11:56,754 INFO L93 Difference]: Finished difference Result 139335 states and 197327 transitions. [2019-09-08 12:11:56,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2019-09-08 12:11:56,759 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 100 [2019-09-08 12:11:56,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:11:56,960 INFO L225 Difference]: With dead ends: 139335 [2019-09-08 12:11:56,960 INFO L226 Difference]: Without dead ends: 119653 [2019-09-08 12:11:57,035 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 12:11:57,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119653 states. [2019-09-08 12:12:03,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119653 to 55496. [2019-09-08 12:12:03,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55496 states. [2019-09-08 12:12:03,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55496 states to 55496 states and 77176 transitions. [2019-09-08 12:12:03,351 INFO L78 Accepts]: Start accepts. Automaton has 55496 states and 77176 transitions. Word has length 100 [2019-09-08 12:12:03,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:12:03,352 INFO L475 AbstractCegarLoop]: Abstraction has 55496 states and 77176 transitions. [2019-09-08 12:12:03,352 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-08 12:12:03,352 INFO L276 IsEmpty]: Start isEmpty. Operand 55496 states and 77176 transitions. [2019-09-08 12:12:03,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-09-08 12:12:03,356 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:12:03,356 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 12:12:03,356 INFO L418 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:12:03,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:12:03,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1252193849, now seen corresponding path program 1 times [2019-09-08 12:12:03,357 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:12:03,357 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:12:03,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:12:03,358 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:12:03,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:12:03,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:12:03,574 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 12:12:03,574 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 12:12:03,574 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 12:12:03,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 12:12:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:12:03,703 INFO L256 TraceCheckSpWp]: Trace formula consists of 735 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-08 12:12:03,707 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 12:12:03,860 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 12:12:04,790 WARN L188 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2019-09-08 12:12:04,844 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 12:12:04,848 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 12:12:04,848 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2019-09-08 12:12:04,849 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-08 12:12:04,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-08 12:12:04,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2019-09-08 12:12:04,850 INFO L87 Difference]: Start difference. First operand 55496 states and 77176 transitions. Second operand 19 states. [2019-09-08 12:12:05,605 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2019-09-08 12:12:05,942 WARN L188 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2019-09-08 12:12:06,352 WARN L188 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 81 [2019-09-08 12:12:06,691 WARN L188 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-09-08 12:12:07,030 WARN L188 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2019-09-08 12:12:07,683 WARN L188 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2019-09-08 12:12:08,094 WARN L188 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2019-09-08 12:12:08,512 WARN L188 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2019-09-08 12:12:08,977 WARN L188 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-09-08 12:12:09,340 WARN L188 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-09-08 12:12:09,770 WARN L188 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2019-09-08 12:12:10,115 WARN L188 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-09-08 12:12:10,576 WARN L188 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2019-09-08 12:12:10,956 WARN L188 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2019-09-08 12:12:11,345 WARN L188 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2019-09-08 12:12:11,735 WARN L188 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2019-09-08 12:12:12,148 WARN L188 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2019-09-08 12:12:12,652 WARN L188 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 87 [2019-09-08 12:12:13,068 WARN L188 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 79 [2019-09-08 12:12:13,385 WARN L188 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2019-09-08 12:12:13,683 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2019-09-08 12:12:14,072 WARN L188 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 81 [2019-09-08 12:12:14,413 WARN L188 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-09-08 12:12:14,738 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2019-09-08 12:12:15,133 WARN L188 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-09-08 12:12:15,559 WARN L188 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2019-09-08 12:12:15,947 WARN L188 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-09-08 12:12:16,406 WARN L188 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2019-09-08 12:12:16,800 WARN L188 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2019-09-08 12:12:17,226 WARN L188 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 87 [2019-09-08 12:12:17,627 WARN L188 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2019-09-08 12:12:18,022 WARN L188 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2019-09-08 12:12:18,465 WARN L188 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-09-08 12:12:19,105 WARN L188 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-08 12:12:19,492 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2019-09-08 12:12:21,202 WARN L188 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-09-08 12:12:21,547 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-09-08 12:12:21,954 WARN L188 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2019-09-08 12:12:22,345 WARN L188 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2019-09-08 12:12:22,667 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-09-08 12:12:23,043 WARN L188 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2019-09-08 12:12:23,418 WARN L188 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2019-09-08 12:12:23,751 WARN L188 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2019-09-08 12:12:24,084 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2019-09-08 12:12:24,573 WARN L188 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 87 [2019-09-08 12:12:24,984 WARN L188 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 87 [2019-09-08 12:12:25,380 WARN L188 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2019-09-08 12:12:25,743 WARN L188 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2019-09-08 12:12:26,146 WARN L188 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-09-08 12:12:26,452 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2019-09-08 12:12:26,794 WARN L188 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2019-09-08 12:12:27,111 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2019-09-08 12:12:27,458 WARN L188 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-09-08 12:12:27,973 WARN L188 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2019-09-08 12:12:28,376 WARN L188 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-08 12:12:28,752 WARN L188 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-08 12:12:29,115 WARN L188 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-09-08 12:12:29,536 WARN L188 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2019-09-08 12:12:29,909 WARN L188 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2019-09-08 12:12:30,203 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-08 12:12:30,502 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-08 12:12:30,841 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2019-09-08 12:12:31,164 WARN L188 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2019-09-08 12:12:31,558 WARN L188 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2019-09-08 12:12:31,929 WARN L188 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2019-09-08 12:12:32,295 WARN L188 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-09-08 12:12:32,636 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-09-08 12:12:33,179 WARN L188 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2019-09-08 12:12:33,566 WARN L188 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2019-09-08 12:12:33,962 WARN L188 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2019-09-08 12:12:34,322 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2019-09-08 12:12:34,772 WARN L188 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-08 12:12:35,067 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-09-08 12:12:35,400 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-08 12:12:35,761 WARN L188 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2019-09-08 12:12:36,078 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2019-09-08 12:12:36,424 WARN L188 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2019-09-08 12:12:36,831 WARN L188 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2019-09-08 12:12:37,191 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-08 12:12:37,703 WARN L188 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 73 [2019-09-08 12:12:38,104 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2019-09-08 12:12:38,562 WARN L188 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 87 [2019-09-08 12:12:38,930 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2019-09-08 12:12:39,414 WARN L188 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 75 [2019-09-08 12:12:39,821 WARN L188 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2019-09-08 12:12:40,161 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-08 12:12:40,888 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-08 12:12:41,284 WARN L188 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2019-09-08 12:12:41,743 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-09-08 12:12:42,139 WARN L188 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2019-09-08 12:12:42,585 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2019-09-08 12:12:45,241 WARN L188 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2019-09-08 12:12:45,734 WARN L188 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2019-09-08 12:12:46,185 WARN L188 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2019-09-08 12:12:46,545 WARN L188 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2019-09-08 12:12:46,887 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2019-09-08 12:12:47,356 WARN L188 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 84 [2019-09-08 12:12:47,826 WARN L188 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 81 [2019-09-08 12:12:48,217 WARN L188 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2019-09-08 12:12:48,562 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2019-09-08 12:12:48,912 WARN L188 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2019-09-08 12:12:49,236 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-08 12:12:49,572 WARN L188 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2019-09-08 12:12:49,906 WARN L188 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2019-09-08 12:12:50,302 WARN L188 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2019-09-08 12:12:50,677 WARN L188 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2019-09-08 12:12:51,150 WARN L188 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 90 [2019-09-08 12:12:51,552 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2019-09-08 12:12:51,967 WARN L188 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2019-09-08 12:12:52,336 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-08 12:12:52,883 WARN L188 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 86 [2019-09-08 12:12:56,103 WARN L188 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2019-09-08 12:12:56,481 WARN L188 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2019-09-08 12:12:56,903 WARN L188 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2019-09-08 12:12:57,254 WARN L188 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2019-09-08 12:12:57,591 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2019-09-08 12:12:57,966 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2019-09-08 12:12:58,274 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-08 12:12:58,642 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2019-09-08 12:12:59,003 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2019-09-08 12:12:59,342 WARN L188 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2019-09-08 12:12:59,639 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2019-09-08 12:12:59,978 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2019-09-08 12:13:00,324 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2019-09-08 12:13:00,696 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-08 12:13:01,015 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2019-09-08 12:13:01,411 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2019-09-08 12:13:01,898 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-08 12:13:02,198 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-08 12:13:02,495 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-08 12:13:02,842 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-08 12:13:03,205 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-08 12:13:03,430 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-08 12:13:03,775 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2019-09-08 12:13:04,021 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-08 12:13:04,315 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-08 12:13:04,537 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-08 12:13:04,788 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2019-09-08 12:13:05,099 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-08 12:13:05,347 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2019-09-08 12:13:05,650 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2019-09-08 12:13:05,870 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-08 12:13:06,386 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2019-09-08 12:13:06,659 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-08 12:13:06,892 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-08 12:13:07,106 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-08 12:13:07,462 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2019-09-08 12:13:07,727 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-08 12:13:08,015 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2019-09-08 12:13:08,503 WARN L188 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2019-09-08 12:13:08,865 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-09-08 12:13:09,246 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-08 12:13:09,467 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2019-09-08 12:13:12,063 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2019-09-08 12:13:12,480 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-08 12:13:13,028 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-08 12:13:13,511 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-09-08 12:13:13,856 WARN L188 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2019-09-08 12:13:14,191 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-08 12:13:14,544 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-08 12:13:14,902 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-08 12:13:15,131 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-08 12:13:15,388 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-08 12:13:15,721 WARN L188 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-09-08 12:13:16,248 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2019-09-08 12:13:16,511 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-08 12:13:17,097 WARN L188 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2019-09-08 12:13:17,304 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-08 12:13:17,818 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-08 12:13:18,584 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-08 12:13:18,823 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-08 12:13:19,047 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-08 12:13:20,319 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-08 12:13:20,669 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2019-09-08 12:13:20,987 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2019-09-08 12:13:21,755 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2019-09-08 12:13:24,446 WARN L188 SmtUtils]: Spent 2.26 s on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2019-09-08 12:13:24,837 WARN L188 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2019-09-08 12:13:25,086 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2019-09-08 12:13:25,556 WARN L188 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2019-09-08 12:13:26,368 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-08 12:13:26,677 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-08 12:13:26,992 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-08 12:13:27,228 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-08 12:13:27,631 WARN L188 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2019-09-08 12:13:28,204 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2019-09-08 12:13:28,464 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2019-09-08 12:13:28,692 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-08 12:13:29,105 WARN L188 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 82 [2019-09-08 12:13:29,472 WARN L188 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 79 [2019-09-08 12:13:29,798 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2019-09-08 12:13:30,125 WARN L188 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2019-09-08 12:13:30,590 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2019-09-08 12:13:30,910 WARN L188 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-09-08 12:13:31,225 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2019-09-08 12:13:31,884 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-08 12:13:32,118 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-08 12:13:32,364 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-08 12:13:32,734 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2019-09-08 12:13:33,062 WARN L188 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-09-08 12:13:33,534 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-08 12:13:33,940 WARN L188 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2019-09-08 12:13:34,289 WARN L188 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2019-09-08 12:13:34,735 WARN L188 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 88 [2019-09-08 12:13:35,158 WARN L188 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 86 [2019-09-08 12:13:35,400 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2019-09-08 12:13:35,651 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2019-09-08 12:13:36,090 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-08 12:13:36,326 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-08 12:13:36,747 WARN L188 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-09-08 12:13:37,109 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2019-09-08 12:13:38,002 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2019-09-08 12:13:38,301 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2019-09-08 12:13:38,569 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2019-09-08 12:13:39,246 WARN L188 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 84 [2019-09-08 12:13:39,545 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2019-09-08 12:13:40,142 WARN L188 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2019-09-08 12:13:40,513 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2019-09-08 12:13:41,527 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-08 12:13:41,763 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-08 12:13:42,005 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-08 12:13:43,068 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-08 12:13:43,332 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-08 12:13:53,710 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-08 12:13:54,609 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-08 12:13:55,202 WARN L188 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-08 12:13:55,516 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-08 12:13:55,867 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-08 12:13:56,741 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-09-08 12:13:57,112 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-08 12:13:57,428 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-09-08 12:13:58,474 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2019-09-08 12:13:59,179 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2019-09-08 12:13:59,504 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-09-08 12:13:59,869 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-09-08 12:14:00,189 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-08 12:14:00,875 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-08 12:14:01,256 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-08 12:14:04,889 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-08 12:14:06,230 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-09-08 12:14:06,466 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-08 12:14:06,724 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-08 12:14:07,175 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-09-08 12:14:07,407 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-09-08 12:14:07,679 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-09-08 12:14:07,928 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-08 12:14:08,164 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-08 12:14:08,346 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-08 12:14:08,585 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-08 12:14:09,048 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-08 12:14:09,479 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-09-08 12:14:09,762 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2019-09-08 12:14:10,171 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-08 12:14:10,614 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-08 12:14:11,338 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-08 12:14:11,587 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2019-09-08 12:14:11,786 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2019-09-08 12:14:11,969 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-08 12:14:12,222 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-08 12:14:12,667 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2019-09-08 12:14:12,904 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-09-08 12:14:13,144 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-09-08 12:14:13,394 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-08 12:14:13,690 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2019-09-08 12:14:13,989 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-08 12:14:14,212 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2019-09-08 12:14:14,403 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-08 12:14:14,688 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-08 12:14:15,108 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-08 12:14:15,493 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-08 12:14:15,657 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2019-09-08 12:14:15,855 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2019-09-08 12:14:16,435 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-08 12:14:16,891 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-08 12:14:17,137 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2019-09-08 12:14:17,424 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-08 12:14:17,661 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-09-08 12:14:18,227 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-08 12:14:18,832 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-08 12:14:19,767 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-08 12:14:19,979 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2019-09-08 12:14:20,474 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2019-09-08 12:14:20,725 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-08 12:14:21,029 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-09-08 12:14:21,287 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-08 12:14:21,696 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-08 12:14:21,868 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2019-09-08 12:14:22,343 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2019-09-08 12:14:22,953 WARN L188 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-09-08 12:14:23,439 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-08 12:14:23,705 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-08 12:14:25,395 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-08 12:14:26,214 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-09-08 12:14:39,814 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-09-08 12:14:41,114 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2019-09-08 12:14:42,429 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2019-09-08 12:14:42,677 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2019-09-08 12:14:43,164 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2019-09-08 12:14:43,377 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-09-08 12:14:43,812 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-08 12:14:44,057 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2019-09-08 12:14:44,817 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2019-09-08 12:14:45,075 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2019-09-08 12:14:45,321 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2019-09-08 12:14:45,774 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2019-09-08 12:14:46,035 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2019-09-08 12:14:46,292 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2019-09-08 12:14:46,757 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-09-08 12:14:47,828 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2019-09-08 12:15:04,098 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-09-08 12:15:04,351 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2019-09-08 12:15:04,752 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-09-08 12:15:05,021 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2019-09-08 12:15:06,176 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2019-09-08 12:15:06,595 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-08 12:15:06,787 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2019-09-08 12:15:07,052 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2019-09-08 12:15:07,487 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2019-09-08 12:15:07,672 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-09-08 12:15:07,950 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2019-09-08 12:15:08,359 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2019-09-08 12:15:08,695 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2019-09-08 12:15:08,979 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2019-09-08 12:15:09,960 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-08 12:15:10,421 WARN L188 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-08 12:15:10,668 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2019-09-08 12:15:11,099 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-09-08 12:15:11,527 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2019-09-08 12:15:11,929 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-09-08 12:15:18,300 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2019-09-08 12:15:19,813 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-09-08 12:15:20,383 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2019-09-08 12:15:25,823 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2019-09-08 12:15:26,568 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-08 12:15:27,045 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2019-09-08 12:15:27,755 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-08 12:15:28,144 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-08 12:15:28,609 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2019-09-08 12:15:29,090 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2019-09-08 12:15:29,464 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2019-09-08 12:15:30,287 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-08 12:15:30,691 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-08 12:15:31,305 WARN L188 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 84 [2019-09-08 12:15:53,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:15:53,357 INFO L93 Difference]: Finished difference Result 663463 states and 924207 transitions. [2019-09-08 12:15:53,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 374 states. [2019-09-08 12:15:53,358 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 101 [2019-09-08 12:15:53,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:15:54,337 INFO L225 Difference]: With dead ends: 663463 [2019-09-08 12:15:54,337 INFO L226 Difference]: Without dead ends: 608015 [2019-09-08 12:15:54,483 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75987 ImplicationChecksByTransitivity, 108.1s TimeCoverageRelationStatistics Valid=19381, Invalid=133109, Unknown=0, NotChecked=0, Total=152490 [2019-09-08 12:15:54,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608015 states. [2019-09-08 12:16:23,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608015 to 118352. [2019-09-08 12:16:23,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118352 states. [2019-09-08 12:16:23,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118352 states to 118352 states and 162739 transitions. [2019-09-08 12:16:23,563 INFO L78 Accepts]: Start accepts. Automaton has 118352 states and 162739 transitions. Word has length 101 [2019-09-08 12:16:23,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:16:23,563 INFO L475 AbstractCegarLoop]: Abstraction has 118352 states and 162739 transitions. [2019-09-08 12:16:23,563 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-08 12:16:23,564 INFO L276 IsEmpty]: Start isEmpty. Operand 118352 states and 162739 transitions. [2019-09-08 12:16:23,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-09-08 12:16:23,568 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:16:23,568 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 12:16:23,568 INFO L418 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:16:23,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:16:23,569 INFO L82 PathProgramCache]: Analyzing trace with hash -970174889, now seen corresponding path program 1 times [2019-09-08 12:16:23,569 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:16:23,569 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:16:23,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:16:23,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:16:23,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:16:23,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:16:23,792 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 12:16:23,793 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 12:16:23,793 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 12:16:23,818 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 12:16:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:16:23,944 INFO L256 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-08 12:16:23,948 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 12:16:24,058 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 12:16:24,366 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 12:16:24,375 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 12:16:24,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2019-09-08 12:16:24,376 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-08 12:16:24,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-08 12:16:24,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2019-09-08 12:16:24,377 INFO L87 Difference]: Start difference. First operand 118352 states and 162739 transitions. Second operand 17 states. [2019-09-08 12:18:43,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:18:43,475 INFO L93 Difference]: Finished difference Result 733162 states and 1002132 transitions. [2019-09-08 12:18:43,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-09-08 12:18:43,475 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 102 [2019-09-08 12:18:43,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:18:44,465 INFO L225 Difference]: With dead ends: 733162 [2019-09-08 12:18:44,466 INFO L226 Difference]: Without dead ends: 626027 [2019-09-08 12:18:44,613 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 12:18:45,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626027 states. [2019-09-08 12:19:54,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626027 to 272339. [2019-09-08 12:19:54,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272339 states. [2019-09-08 12:19:55,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272339 states to 272339 states and 374442 transitions. [2019-09-08 12:19:55,366 INFO L78 Accepts]: Start accepts. Automaton has 272339 states and 374442 transitions. Word has length 102 [2019-09-08 12:19:55,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:19:55,366 INFO L475 AbstractCegarLoop]: Abstraction has 272339 states and 374442 transitions. [2019-09-08 12:19:55,366 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-08 12:19:55,366 INFO L276 IsEmpty]: Start isEmpty. Operand 272339 states and 374442 transitions. [2019-09-08 12:19:55,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-09-08 12:19:55,370 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:19:55,370 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 12:19:55,370 INFO L418 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:19:55,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:19:55,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1067777053, now seen corresponding path program 1 times [2019-09-08 12:19:55,371 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:19:55,371 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:19:55,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:19:55,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:19:55,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:19:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:19:55,562 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 12:19:55,562 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 12:19:55,562 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 12:19:55,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:19:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:19:55,687 INFO L256 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-08 12:19:55,690 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 12:19:55,776 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 12:19:55,967 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 12:19:55,970 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 12:19:55,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2019-09-08 12:19:55,971 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-08 12:19:55,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-08 12:19:55,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2019-09-08 12:19:55,972 INFO L87 Difference]: Start difference. First operand 272339 states and 374442 transitions. Second operand 17 states. [2019-09-08 12:19:56,493 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2019-09-08 12:20:18,803 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27