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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 06:33:51,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 06:33:51,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 06:33:51,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 06:33:51,831 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 06:33:51,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 06:33:51,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 06:33:51,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 06:33:51,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 06:33:51,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 06:33:51,839 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 06:33:51,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 06:33:51,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 06:33:51,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 06:33:51,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 06:33:51,843 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 06:33:51,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 06:33:51,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 06:33:51,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 06:33:51,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 06:33:51,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 06:33:51,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 06:33:51,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 06:33:51,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 06:33:51,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-10 06:33:51,857 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-10 06:33:51,857 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-10 06:33:51,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-10 06:33:51,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-10 06:33:51,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-10 06:33:51,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 06:33:51,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 06:33:51,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 06:33:51,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 06:33:51,868 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 06:33:51,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 06:33:51,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 06:33:51,869 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 06:33:51,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 06:33:51,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 06:33:51,871 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 06:33:51,872 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-10 06:33:51,901 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 06:33:51,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 06:33:51,902 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 06:33:51,903 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 06:33:51,903 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 06:33:51,903 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 06:33:51,904 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 06:33:51,904 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 06:33:51,904 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 06:33:51,904 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 06:33:51,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 06:33:51,907 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 06:33:51,907 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 06:33:51,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 06:33:51,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 06:33:51,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 06:33:51,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 06:33:51,908 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 06:33:51,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 06:33:51,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 06:33:51,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 06:33:51,909 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 06:33:51,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 06:33:51,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 06:33:51,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 06:33:51,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 06:33:51,911 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 06:33:51,911 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 06:33:51,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 06:33:51,911 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 06:33:51,966 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 06:33:51,977 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 06:33:51,981 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 06:33:51,982 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 06:33:51,982 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 06:33:51,983 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2019-09-10 06:33:52,052 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57a6a5f93/c94555721cc643398e5b205d22617de4/FLAG147034912 [2019-09-10 06:33:52,584 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 06:33:52,585 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2019-09-10 06:33:52,602 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57a6a5f93/c94555721cc643398e5b205d22617de4/FLAG147034912 [2019-09-10 06:33:52,901 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57a6a5f93/c94555721cc643398e5b205d22617de4 [2019-09-10 06:33:52,910 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 06:33:52,912 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 06:33:52,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 06:33:52,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 06:33:52,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 06:33:52,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 06:33:52" (1/1) ... [2019-09-10 06:33:52,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@250bdd38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 06:33:52, skipping insertion in model container [2019-09-10 06:33:52,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 06:33:52" (1/1) ... [2019-09-10 06:33:52,928 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 06:33:52,972 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 06:33:53,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 06:33:53,227 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 06:33:53,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 06:33:53,388 INFO L192 MainTranslator]: Completed translation [2019-09-10 06:33:53,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 06:33:53 WrapperNode [2019-09-10 06:33:53,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 06:33:53,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 06:33:53,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 06:33:53,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 06:33:53,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 06:33:53" (1/1) ... [2019-09-10 06:33:53,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 06:33:53" (1/1) ... [2019-09-10 06:33:53,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 06:33:53" (1/1) ... [2019-09-10 06:33:53,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 06:33:53" (1/1) ... [2019-09-10 06:33:53,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 06:33:53" (1/1) ... [2019-09-10 06:33:53,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 06:33:53" (1/1) ... [2019-09-10 06:33:53,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 06:33:53" (1/1) ... [2019-09-10 06:33:53,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 06:33:53,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 06:33:53,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 06:33:53,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 06:33:53,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 06:33:53" (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 [2019-09-10 06:33:53,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 06:33:53,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 06:33:53,496 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 06:33:53,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 06:33:53,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-10 06:33:53,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-10 06:33:53,497 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-09-10 06:33:53,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-10 06:33:53,497 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-09-10 06:33:53,497 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-09-10 06:33:53,498 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-09-10 06:33:53,498 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-09-10 06:33:53,498 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-09-10 06:33:53,498 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-09-10 06:33:53,498 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-09-10 06:33:53,498 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 06:33:53,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 06:33:53,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 06:33:54,014 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 06:33:54,015 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-10 06:33:54,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 06:33:54 BoogieIcfgContainer [2019-09-10 06:33:54,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 06:33:54,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 06:33:54,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 06:33:54,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 06:33:54,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 06:33:52" (1/3) ... [2019-09-10 06:33:54,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d0f0279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 06:33:54, skipping insertion in model container [2019-09-10 06:33:54,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 06:33:53" (2/3) ... [2019-09-10 06:33:54,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d0f0279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 06:33:54, skipping insertion in model container [2019-09-10 06:33:54,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 06:33:54" (3/3) ... [2019-09-10 06:33:54,029 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2019-09-10 06:33:54,040 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 06:33:54,060 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 06:33:54,077 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 06:33:54,110 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 06:33:54,110 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 06:33:54,111 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 06:33:54,111 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 06:33:54,111 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 06:33:54,111 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 06:33:54,111 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 06:33:54,111 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 06:33:54,127 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2019-09-10 06:33:54,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-09-10 06:33:54,140 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:33:54,141 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:33:54,143 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:33:54,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:33:54,150 INFO L82 PathProgramCache]: Analyzing trace with hash -60281297, now seen corresponding path program 1 times [2019-09-10 06:33:54,152 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:33:54,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:33:54,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:33:54,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:33:54,208 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:33:54,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:33:54,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:33:54,525 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:33:54,525 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:33:54,526 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:33:54,531 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:33:54,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:33:54,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:33:54,550 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 3 states. [2019-09-10 06:33:54,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:33:54,615 INFO L93 Difference]: Finished difference Result 140 states and 219 transitions. [2019-09-10 06:33:54,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:33:54,617 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2019-09-10 06:33:54,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:33:54,629 INFO L225 Difference]: With dead ends: 140 [2019-09-10 06:33:54,630 INFO L226 Difference]: Without dead ends: 132 [2019-09-10 06:33:54,631 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 [2019-09-10 06:33:54,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2019-09-10 06:33:54,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2019-09-10 06:33:54,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2019-09-10 06:33:54,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 192 transitions. [2019-09-10 06:33:54,681 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 192 transitions. Word has length 41 [2019-09-10 06:33:54,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:33:54,682 INFO L475 AbstractCegarLoop]: Abstraction has 130 states and 192 transitions. [2019-09-10 06:33:54,682 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:33:54,682 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 192 transitions. [2019-09-10 06:33:54,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-09-10 06:33:54,684 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:33:54,684 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:33:54,684 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:33:54,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:33:54,685 INFO L82 PathProgramCache]: Analyzing trace with hash 213438414, now seen corresponding path program 1 times [2019-09-10 06:33:54,685 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:33:54,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:33:54,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:33:54,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:33:54,688 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:33:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:33:54,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:33:54,794 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:33:54,794 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:33:54,795 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:33:54,796 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:33:54,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:33:54,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:33:54,799 INFO L87 Difference]: Start difference. First operand 130 states and 192 transitions. Second operand 3 states. [2019-09-10 06:33:54,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:33:54,842 INFO L93 Difference]: Finished difference Result 204 states and 306 transitions. [2019-09-10 06:33:54,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:33:54,843 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2019-09-10 06:33:54,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:33:54,848 INFO L225 Difference]: With dead ends: 204 [2019-09-10 06:33:54,851 INFO L226 Difference]: Without dead ends: 204 [2019-09-10 06:33:54,852 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 [2019-09-10 06:33:54,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2019-09-10 06:33:54,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 202. [2019-09-10 06:33:54,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2019-09-10 06:33:54,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 305 transitions. [2019-09-10 06:33:54,872 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 305 transitions. Word has length 42 [2019-09-10 06:33:54,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:33:54,873 INFO L475 AbstractCegarLoop]: Abstraction has 202 states and 305 transitions. [2019-09-10 06:33:54,873 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:33:54,873 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 305 transitions. [2019-09-10 06:33:54,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-09-10 06:33:54,875 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:33:54,875 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:33:54,876 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:33:54,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:33:54,876 INFO L82 PathProgramCache]: Analyzing trace with hash -511864306, now seen corresponding path program 1 times [2019-09-10 06:33:54,876 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:33:54,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:33:54,878 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:33:54,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:33:54,879 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:33:54,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:33:54,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:33:54,983 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:33:54,983 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:33:54,983 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:33:54,984 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:33:54,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:33:54,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:33:54,986 INFO L87 Difference]: Start difference. First operand 202 states and 305 transitions. Second operand 3 states. [2019-09-10 06:33:55,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:33:55,037 INFO L93 Difference]: Finished difference Result 316 states and 478 transitions. [2019-09-10 06:33:55,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:33:55,038 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2019-09-10 06:33:55,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:33:55,041 INFO L225 Difference]: With dead ends: 316 [2019-09-10 06:33:55,041 INFO L226 Difference]: Without dead ends: 316 [2019-09-10 06:33:55,042 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 [2019-09-10 06:33:55,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2019-09-10 06:33:55,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 314. [2019-09-10 06:33:55,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2019-09-10 06:33:55,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 477 transitions. [2019-09-10 06:33:55,064 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 477 transitions. Word has length 43 [2019-09-10 06:33:55,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:33:55,065 INFO L475 AbstractCegarLoop]: Abstraction has 314 states and 477 transitions. [2019-09-10 06:33:55,065 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:33:55,065 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 477 transitions. [2019-09-10 06:33:55,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-09-10 06:33:55,066 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:33:55,067 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:33:55,067 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:33:55,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:33:55,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1963926839, now seen corresponding path program 1 times [2019-09-10 06:33:55,068 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:33:55,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:33:55,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:33:55,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:33:55,070 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:33:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:33:55,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:33:55,182 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:33:55,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 06:33:55,182 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:33:55,183 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 06:33:55,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 06:33:55,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 06:33:55,184 INFO L87 Difference]: Start difference. First operand 314 states and 477 transitions. Second operand 5 states. [2019-09-10 06:33:55,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:33:55,291 INFO L93 Difference]: Finished difference Result 1184 states and 1820 transitions. [2019-09-10 06:33:55,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 06:33:55,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2019-09-10 06:33:55,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:33:55,299 INFO L225 Difference]: With dead ends: 1184 [2019-09-10 06:33:55,299 INFO L226 Difference]: Without dead ends: 1184 [2019-09-10 06:33:55,299 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-09-10 06:33:55,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2019-09-10 06:33:55,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 602. [2019-09-10 06:33:55,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2019-09-10 06:33:55,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 913 transitions. [2019-09-10 06:33:55,336 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 913 transitions. Word has length 44 [2019-09-10 06:33:55,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:33:55,337 INFO L475 AbstractCegarLoop]: Abstraction has 602 states and 913 transitions. [2019-09-10 06:33:55,337 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 06:33:55,337 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 913 transitions. [2019-09-10 06:33:55,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-09-10 06:33:55,339 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:33:55,339 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:33:55,339 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:33:55,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:33:55,340 INFO L82 PathProgramCache]: Analyzing trace with hash 733657067, now seen corresponding path program 1 times [2019-09-10 06:33:55,340 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:33:55,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:33:55,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:33:55,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:33:55,342 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:33:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:33:55,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:33:55,476 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:33:55,476 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 06:33:55,476 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:33:55,478 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 06:33:55,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 06:33:55,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-09-10 06:33:55,479 INFO L87 Difference]: Start difference. First operand 602 states and 913 transitions. Second operand 5 states. [2019-09-10 06:33:55,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:33:55,554 INFO L93 Difference]: Finished difference Result 1494 states and 2243 transitions. [2019-09-10 06:33:55,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 06:33:55,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2019-09-10 06:33:55,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:33:55,562 INFO L225 Difference]: With dead ends: 1494 [2019-09-10 06:33:55,563 INFO L226 Difference]: Without dead ends: 1494 [2019-09-10 06:33:55,563 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-09-10 06:33:55,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2019-09-10 06:33:55,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1490. [2019-09-10 06:33:55,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1490 states. [2019-09-10 06:33:55,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 2241 transitions. [2019-09-10 06:33:55,600 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 2241 transitions. Word has length 45 [2019-09-10 06:33:55,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:33:55,601 INFO L475 AbstractCegarLoop]: Abstraction has 1490 states and 2241 transitions. [2019-09-10 06:33:55,601 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 06:33:55,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 2241 transitions. [2019-09-10 06:33:55,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-09-10 06:33:55,602 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:33:55,603 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:33:55,603 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:33:55,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:33:55,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1649759948, now seen corresponding path program 1 times [2019-09-10 06:33:55,604 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:33:55,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:33:55,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:33:55,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:33:55,605 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:33:55,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:33:55,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:33:55,705 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:33:55,705 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 06:33:55,705 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:33:55,705 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 06:33:55,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 06:33:55,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 06:33:55,706 INFO L87 Difference]: Start difference. First operand 1490 states and 2241 transitions. Second operand 5 states. [2019-09-10 06:33:55,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:33:55,904 INFO L93 Difference]: Finished difference Result 2956 states and 4418 transitions. [2019-09-10 06:33:55,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 06:33:55,905 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2019-09-10 06:33:55,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:33:55,920 INFO L225 Difference]: With dead ends: 2956 [2019-09-10 06:33:55,921 INFO L226 Difference]: Without dead ends: 2956 [2019-09-10 06:33:55,921 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 [2019-09-10 06:33:55,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2019-09-10 06:33:56,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 2954. [2019-09-10 06:33:56,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2954 states. [2019-09-10 06:33:56,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2954 states to 2954 states and 4417 transitions. [2019-09-10 06:33:56,028 INFO L78 Accepts]: Start accepts. Automaton has 2954 states and 4417 transitions. Word has length 47 [2019-09-10 06:33:56,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:33:56,028 INFO L475 AbstractCegarLoop]: Abstraction has 2954 states and 4417 transitions. [2019-09-10 06:33:56,029 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 06:33:56,029 INFO L276 IsEmpty]: Start isEmpty. Operand 2954 states and 4417 transitions. [2019-09-10 06:33:56,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-09-10 06:33:56,034 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:33:56,037 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:33:56,038 INFO L418 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:33:56,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:33:56,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1830795353, now seen corresponding path program 1 times [2019-09-10 06:33:56,046 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:33:56,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:33:56,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:33:56,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:33:56,049 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:33:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:33:56,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:33:56,179 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:33:56,179 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 06:33:56,179 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:33:56,180 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 06:33:56,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 06:33:56,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 06:33:56,180 INFO L87 Difference]: Start difference. First operand 2954 states and 4417 transitions. Second operand 5 states. [2019-09-10 06:33:56,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:33:56,270 INFO L93 Difference]: Finished difference Result 6074 states and 8905 transitions. [2019-09-10 06:33:56,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-10 06:33:56,271 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2019-09-10 06:33:56,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:33:56,300 INFO L225 Difference]: With dead ends: 6074 [2019-09-10 06:33:56,301 INFO L226 Difference]: Without dead ends: 6074 [2019-09-10 06:33:56,301 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 [2019-09-10 06:33:56,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6074 states. [2019-09-10 06:33:56,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6074 to 3146. [2019-09-10 06:33:56,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3146 states. [2019-09-10 06:33:56,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3146 states to 3146 states and 4609 transitions. [2019-09-10 06:33:56,404 INFO L78 Accepts]: Start accepts. Automaton has 3146 states and 4609 transitions. Word has length 47 [2019-09-10 06:33:56,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:33:56,405 INFO L475 AbstractCegarLoop]: Abstraction has 3146 states and 4609 transitions. [2019-09-10 06:33:56,405 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 06:33:56,405 INFO L276 IsEmpty]: Start isEmpty. Operand 3146 states and 4609 transitions. [2019-09-10 06:33:56,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-09-10 06:33:56,407 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:33:56,407 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:33:56,407 INFO L418 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:33:56,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:33:56,408 INFO L82 PathProgramCache]: Analyzing trace with hash 929700792, now seen corresponding path program 1 times [2019-09-10 06:33:56,408 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:33:56,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:33:56,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:33:56,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:33:56,410 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:33:56,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:33:56,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:33:56,494 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:33:56,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:33:56,494 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:33:56,495 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:33:56,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:33:56,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:33:56,496 INFO L87 Difference]: Start difference. First operand 3146 states and 4609 transitions. Second operand 3 states. [2019-09-10 06:33:56,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:33:56,535 INFO L93 Difference]: Finished difference Result 3818 states and 5544 transitions. [2019-09-10 06:33:56,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:33:56,535 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2019-09-10 06:33:56,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:33:56,557 INFO L225 Difference]: With dead ends: 3818 [2019-09-10 06:33:56,558 INFO L226 Difference]: Without dead ends: 3818 [2019-09-10 06:33:56,558 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 [2019-09-10 06:33:56,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3818 states. [2019-09-10 06:33:56,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3818 to 3816. [2019-09-10 06:33:56,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3816 states. [2019-09-10 06:33:56,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3816 states to 3816 states and 5543 transitions. [2019-09-10 06:33:56,655 INFO L78 Accepts]: Start accepts. Automaton has 3816 states and 5543 transitions. Word has length 48 [2019-09-10 06:33:56,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:33:56,656 INFO L475 AbstractCegarLoop]: Abstraction has 3816 states and 5543 transitions. [2019-09-10 06:33:56,656 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:33:56,656 INFO L276 IsEmpty]: Start isEmpty. Operand 3816 states and 5543 transitions. [2019-09-10 06:33:56,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-10 06:33:56,659 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:33:56,659 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:33:56,660 INFO L418 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:33:56,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:33:56,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1357425763, now seen corresponding path program 1 times [2019-09-10 06:33:56,660 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:33:56,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:33:56,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:33:56,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:33:56,662 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:33:56,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:33:56,765 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-10 06:33:56,765 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:33:56,765 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:33:56,766 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 66 with the following transitions: [2019-09-10 06:33:56,770 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [72], [74], [77], [88], [90], [93], [104], [106], [109], [112], [114], [117], [118], [120], [122], [127], [140], [142], [155], [163], [182], [193], [195], [208], [216], [235], [246], [248], [251], [254], [257], [259], [261], [310], [311], [315], [316], [317] [2019-09-10 06:33:56,840 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:33:56,840 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:33:57,098 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:33:57,518 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 06:33:57,521 INFO L272 AbstractInterpreter]: Visited 59 different actions 351 times. Merged at 35 different actions 250 times. Widened at 13 different actions 37 times. Performed 1200 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1200 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 36 fixpoints after 12 different actions. Largest state had 97 variables. [2019-09-10 06:33:57,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:33:57,527 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 06:33:57,527 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:33:57,527 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG 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) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 06:33:57,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:33:57,549 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 06:33:57,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:33:57,647 INFO L256 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 24 conjunts are in the unsatisfiable core [2019-09-10 06:33:57,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 06:33:57,793 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-10 06:33:57,794 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 06:33:57,831 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:33:57,982 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:33:57,987 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 06:33:57,988 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 9] total 16 [2019-09-10 06:33:57,988 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 06:33:57,988 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-10 06:33:57,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-10 06:33:57,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2019-09-10 06:33:57,989 INFO L87 Difference]: Start difference. First operand 3816 states and 5543 transitions. Second operand 9 states. [2019-09-10 06:33:58,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:33:58,148 INFO L93 Difference]: Finished difference Result 6640 states and 9522 transitions. [2019-09-10 06:33:58,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-10 06:33:58,148 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2019-09-10 06:33:58,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:33:58,186 INFO L225 Difference]: With dead ends: 6640 [2019-09-10 06:33:58,186 INFO L226 Difference]: Without dead ends: 6640 [2019-09-10 06:33:58,187 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2019-09-10 06:33:58,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6640 states. [2019-09-10 06:33:58,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6640 to 6420. [2019-09-10 06:33:58,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6420 states. [2019-09-10 06:33:58,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6420 states to 6420 states and 9219 transitions. [2019-09-10 06:33:58,432 INFO L78 Accepts]: Start accepts. Automaton has 6420 states and 9219 transitions. Word has length 65 [2019-09-10 06:33:58,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:33:58,432 INFO L475 AbstractCegarLoop]: Abstraction has 6420 states and 9219 transitions. [2019-09-10 06:33:58,432 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-10 06:33:58,432 INFO L276 IsEmpty]: Start isEmpty. Operand 6420 states and 9219 transitions. [2019-09-10 06:33:58,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-10 06:33:58,442 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:33:58,442 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:33:58,443 INFO L418 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:33:58,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:33:58,443 INFO L82 PathProgramCache]: Analyzing trace with hash -157142588, now seen corresponding path program 1 times [2019-09-10 06:33:58,444 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:33:58,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:33:58,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:33:58,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:33:58,446 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:33:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:33:58,593 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:33:58,593 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:33:58,594 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:33:58,595 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 67 with the following transitions: [2019-09-10 06:33:58,595 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [64], [67], [72], [74], [77], [88], [90], [93], [104], [106], [109], [112], [114], [117], [118], [120], [129], [140], [142], [155], [163], [182], [193], [195], [208], [216], [235], [237], [240], [248], [251], [254], [257], [259], [261], [310], [311], [315], [316], [317] [2019-09-10 06:33:58,602 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:33:58,602 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:33:58,627 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:33:58,780 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 06:33:58,781 INFO L272 AbstractInterpreter]: Visited 56 different actions 263 times. Merged at 29 different actions 173 times. Widened at 10 different actions 19 times. Performed 974 root evaluator evaluations with a maximum evaluation depth of 5. Performed 974 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 16 fixpoints after 5 different actions. Largest state had 97 variables. [2019-09-10 06:33:58,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:33:58,781 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 06:33:58,934 INFO L227 lantSequenceWeakener]: Weakened 40 states. On average, predicates are now at 81.17% of their original sizes. [2019-09-10 06:33:58,934 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 06:34:00,625 INFO L420 sIntCurrentIteration]: We unified 65 AI predicates to 65 [2019-09-10 06:34:00,626 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 06:34:00,626 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 06:34:00,626 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [40] imperfect sequences [7] total 45 [2019-09-10 06:34:00,627 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:34:00,627 INFO L454 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-09-10 06:34:00,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-09-10 06:34:00,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1376, Unknown=0, NotChecked=0, Total=1560 [2019-09-10 06:34:00,629 INFO L87 Difference]: Start difference. First operand 6420 states and 9219 transitions. Second operand 40 states. [2019-09-10 06:34:20,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:34:20,265 INFO L93 Difference]: Finished difference Result 15742 states and 22138 transitions. [2019-09-10 06:34:20,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2019-09-10 06:34:20,265 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 66 [2019-09-10 06:34:20,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:34:20,334 INFO L225 Difference]: With dead ends: 15742 [2019-09-10 06:34:20,334 INFO L226 Difference]: Without dead ends: 15742 [2019-09-10 06:34:20,342 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8127 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=3572, Invalid=20608, Unknown=0, NotChecked=0, Total=24180 [2019-09-10 06:34:20,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15742 states. [2019-09-10 06:34:20,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15742 to 9053. [2019-09-10 06:34:20,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9053 states. [2019-09-10 06:34:20,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9053 states to 9053 states and 12811 transitions. [2019-09-10 06:34:20,560 INFO L78 Accepts]: Start accepts. Automaton has 9053 states and 12811 transitions. Word has length 66 [2019-09-10 06:34:20,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:34:20,561 INFO L475 AbstractCegarLoop]: Abstraction has 9053 states and 12811 transitions. [2019-09-10 06:34:20,561 INFO L476 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-09-10 06:34:20,561 INFO L276 IsEmpty]: Start isEmpty. Operand 9053 states and 12811 transitions. [2019-09-10 06:34:20,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-10 06:34:20,564 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:34:20,564 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:34:20,565 INFO L418 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:34:20,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:34:20,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1635593437, now seen corresponding path program 1 times [2019-09-10 06:34:20,565 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:34:20,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:34:20,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:34:20,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:34:20,567 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:34:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:34:20,621 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:34:20,621 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:34:20,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:34:20,621 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:34:20,622 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:34:20,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:34:20,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:34:20,624 INFO L87 Difference]: Start difference. First operand 9053 states and 12811 transitions. Second operand 3 states. [2019-09-10 06:34:20,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:34:20,672 INFO L93 Difference]: Finished difference Result 12292 states and 17046 transitions. [2019-09-10 06:34:20,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:34:20,672 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2019-09-10 06:34:20,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:34:20,696 INFO L225 Difference]: With dead ends: 12292 [2019-09-10 06:34:20,696 INFO L226 Difference]: Without dead ends: 12292 [2019-09-10 06:34:20,697 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 [2019-09-10 06:34:20,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12292 states. [2019-09-10 06:34:20,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12292 to 11526. [2019-09-10 06:34:20,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11526 states. [2019-09-10 06:34:20,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11526 states to 11526 states and 16061 transitions. [2019-09-10 06:34:20,880 INFO L78 Accepts]: Start accepts. Automaton has 11526 states and 16061 transitions. Word has length 66 [2019-09-10 06:34:20,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:34:20,880 INFO L475 AbstractCegarLoop]: Abstraction has 11526 states and 16061 transitions. [2019-09-10 06:34:20,880 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:34:20,880 INFO L276 IsEmpty]: Start isEmpty. Operand 11526 states and 16061 transitions. [2019-09-10 06:34:20,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-10 06:34:20,884 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:34:20,884 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:34:20,884 INFO L418 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:34:20,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:34:20,885 INFO L82 PathProgramCache]: Analyzing trace with hash 230389696, now seen corresponding path program 1 times [2019-09-10 06:34:20,885 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:34:20,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:34:20,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:34:20,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:34:20,887 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:34:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:34:20,941 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:34:20,941 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:34:20,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:34:20,941 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:34:20,942 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:34:20,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:34:20,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:34:20,943 INFO L87 Difference]: Start difference. First operand 11526 states and 16061 transitions. Second operand 3 states. [2019-09-10 06:34:21,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:34:21,094 INFO L93 Difference]: Finished difference Result 17916 states and 24709 transitions. [2019-09-10 06:34:21,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:34:21,094 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2019-09-10 06:34:21,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:34:21,127 INFO L225 Difference]: With dead ends: 17916 [2019-09-10 06:34:21,127 INFO L226 Difference]: Without dead ends: 17916 [2019-09-10 06:34:21,127 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 [2019-09-10 06:34:21,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17916 states. [2019-09-10 06:34:21,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17916 to 17887. [2019-09-10 06:34:21,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17887 states. [2019-09-10 06:34:21,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17887 states to 17887 states and 24681 transitions. [2019-09-10 06:34:21,367 INFO L78 Accepts]: Start accepts. Automaton has 17887 states and 24681 transitions. Word has length 66 [2019-09-10 06:34:21,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:34:21,367 INFO L475 AbstractCegarLoop]: Abstraction has 17887 states and 24681 transitions. [2019-09-10 06:34:21,367 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:34:21,367 INFO L276 IsEmpty]: Start isEmpty. Operand 17887 states and 24681 transitions. [2019-09-10 06:34:21,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-10 06:34:21,375 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:34:21,375 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:34:21,376 INFO L418 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:34:21,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:34:21,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1248061153, now seen corresponding path program 1 times [2019-09-10 06:34:21,376 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:34:21,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:34:21,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:34:21,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:34:21,378 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:34:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:34:21,481 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:34:21,481 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:34:21,481 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:34:21,482 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 67 with the following transitions: [2019-09-10 06:34:21,482 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [72], [74], [77], [80], [83], [88], [90], [93], [104], [106], [109], [112], [114], [117], [118], [120], [129], [140], [142], [155], [163], [182], [184], [187], [195], [198], [201], [204], [206], [208], [246], [248], [261], [269], [288], [310], [311], [315], [316], [317] [2019-09-10 06:34:21,488 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:34:21,488 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:34:21,499 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:34:21,603 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 06:34:21,603 INFO L272 AbstractInterpreter]: Visited 56 different actions 261 times. Merged at 29 different actions 173 times. Widened at 8 different actions 15 times. Performed 958 root evaluator evaluations with a maximum evaluation depth of 5. Performed 958 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 14 fixpoints after 6 different actions. Largest state had 97 variables. [2019-09-10 06:34:21,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:34:21,604 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 06:34:21,700 INFO L227 lantSequenceWeakener]: Weakened 40 states. On average, predicates are now at 81.18% of their original sizes. [2019-09-10 06:34:21,701 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 06:34:23,638 INFO L420 sIntCurrentIteration]: We unified 65 AI predicates to 65 [2019-09-10 06:34:23,638 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 06:34:23,638 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 06:34:23,638 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [42] imperfect sequences [7] total 47 [2019-09-10 06:34:23,639 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:34:23,639 INFO L454 AbstractCegarLoop]: Interpolant automaton has 42 states [2019-09-10 06:34:23,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2019-09-10 06:34:23,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1529, Unknown=0, NotChecked=0, Total=1722 [2019-09-10 06:34:23,640 INFO L87 Difference]: Start difference. First operand 17887 states and 24681 transitions. Second operand 42 states. [2019-09-10 06:34:50,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:34:50,504 INFO L93 Difference]: Finished difference Result 36124 states and 49118 transitions. [2019-09-10 06:34:50,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2019-09-10 06:34:50,504 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 66 [2019-09-10 06:34:50,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:34:50,571 INFO L225 Difference]: With dead ends: 36124 [2019-09-10 06:34:50,571 INFO L226 Difference]: Without dead ends: 36124 [2019-09-10 06:34:50,578 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6613 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=2957, Invalid=16503, Unknown=0, NotChecked=0, Total=19460 [2019-09-10 06:34:50,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36124 states. [2019-09-10 06:34:50,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36124 to 21577. [2019-09-10 06:34:50,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21577 states. [2019-09-10 06:34:50,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21577 states to 21577 states and 29509 transitions. [2019-09-10 06:34:50,964 INFO L78 Accepts]: Start accepts. Automaton has 21577 states and 29509 transitions. Word has length 66 [2019-09-10 06:34:50,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:34:50,964 INFO L475 AbstractCegarLoop]: Abstraction has 21577 states and 29509 transitions. [2019-09-10 06:34:50,965 INFO L476 AbstractCegarLoop]: Interpolant automaton has 42 states. [2019-09-10 06:34:50,965 INFO L276 IsEmpty]: Start isEmpty. Operand 21577 states and 29509 transitions. [2019-09-10 06:34:50,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-10 06:34:50,971 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:34:50,971 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:34:50,971 INFO L418 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:34:50,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:34:50,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1734896984, now seen corresponding path program 1 times [2019-09-10 06:34:50,972 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:34:50,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:34:50,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:34:50,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:34:50,974 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:34:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:34:51,020 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:34:51,020 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:34:51,021 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:34:51,021 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:34:51,022 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:34:51,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:34:51,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:34:51,023 INFO L87 Difference]: Start difference. First operand 21577 states and 29509 transitions. Second operand 3 states. [2019-09-10 06:34:51,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:34:51,087 INFO L93 Difference]: Finished difference Result 23975 states and 32000 transitions. [2019-09-10 06:34:51,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:34:51,088 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2019-09-10 06:34:51,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:34:51,124 INFO L225 Difference]: With dead ends: 23975 [2019-09-10 06:34:51,124 INFO L226 Difference]: Without dead ends: 20489 [2019-09-10 06:34:51,124 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 [2019-09-10 06:34:51,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20489 states. [2019-09-10 06:34:51,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20489 to 19267. [2019-09-10 06:34:51,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19267 states. [2019-09-10 06:34:51,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19267 states to 19267 states and 25911 transitions. [2019-09-10 06:34:51,392 INFO L78 Accepts]: Start accepts. Automaton has 19267 states and 25911 transitions. Word has length 66 [2019-09-10 06:34:51,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:34:51,393 INFO L475 AbstractCegarLoop]: Abstraction has 19267 states and 25911 transitions. [2019-09-10 06:34:51,393 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:34:51,393 INFO L276 IsEmpty]: Start isEmpty. Operand 19267 states and 25911 transitions. [2019-09-10 06:34:51,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-10 06:34:51,399 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:34:51,399 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:34:51,399 INFO L418 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:34:51,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:34:51,400 INFO L82 PathProgramCache]: Analyzing trace with hash 612922476, now seen corresponding path program 1 times [2019-09-10 06:34:51,400 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:34:51,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:34:51,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:34:51,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:34:51,402 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:34:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:34:51,490 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:34:51,490 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:34:51,490 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:34:51,490 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 67 with the following transitions: [2019-09-10 06:34:51,491 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [72], [74], [77], [88], [90], [93], [96], [99], [104], [106], [109], [112], [114], [117], [118], [120], [129], [131], [134], [142], [145], [148], [151], [153], [155], [193], [195], [208], [216], [235], [246], [248], [261], [269], [288], [310], [311], [315], [316], [317] [2019-09-10 06:34:51,493 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:34:51,493 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:34:51,503 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:34:52,278 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 06:34:52,278 INFO L272 AbstractInterpreter]: Visited 56 different actions 295 times. Merged at 29 different actions 202 times. Widened at 10 different actions 20 times. Performed 1025 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1025 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 18 fixpoints after 6 different actions. Largest state had 97 variables. [2019-09-10 06:34:52,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:34:52,279 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 06:34:52,340 INFO L227 lantSequenceWeakener]: Weakened 40 states. On average, predicates are now at 81.58% of their original sizes. [2019-09-10 06:34:52,340 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 06:34:53,702 INFO L420 sIntCurrentIteration]: We unified 65 AI predicates to 65 [2019-09-10 06:34:53,702 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 06:34:53,703 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 06:34:53,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [40] imperfect sequences [7] total 45 [2019-09-10 06:34:53,703 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:34:53,704 INFO L454 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-09-10 06:34:53,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-09-10 06:34:53,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1376, Unknown=0, NotChecked=0, Total=1560 [2019-09-10 06:34:53,705 INFO L87 Difference]: Start difference. First operand 19267 states and 25911 transitions. Second operand 40 states. [2019-09-10 06:35:24,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:35:24,325 INFO L93 Difference]: Finished difference Result 35384 states and 46882 transitions. [2019-09-10 06:35:24,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2019-09-10 06:35:24,325 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 66 [2019-09-10 06:35:24,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:35:24,375 INFO L225 Difference]: With dead ends: 35384 [2019-09-10 06:35:24,375 INFO L226 Difference]: Without dead ends: 35363 [2019-09-10 06:35:24,385 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27251 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=9666, Invalid=57156, Unknown=0, NotChecked=0, Total=66822 [2019-09-10 06:35:24,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35363 states. [2019-09-10 06:35:24,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35363 to 21308. [2019-09-10 06:35:24,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21308 states. [2019-09-10 06:35:24,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21308 states to 21308 states and 28305 transitions. [2019-09-10 06:35:24,742 INFO L78 Accepts]: Start accepts. Automaton has 21308 states and 28305 transitions. Word has length 66 [2019-09-10 06:35:24,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:35:24,743 INFO L475 AbstractCegarLoop]: Abstraction has 21308 states and 28305 transitions. [2019-09-10 06:35:24,743 INFO L476 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-09-10 06:35:24,743 INFO L276 IsEmpty]: Start isEmpty. Operand 21308 states and 28305 transitions. [2019-09-10 06:35:24,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-10 06:35:24,751 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:35:24,751 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:35:24,751 INFO L418 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:35:24,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:35:24,752 INFO L82 PathProgramCache]: Analyzing trace with hash -622024686, now seen corresponding path program 1 times [2019-09-10 06:35:24,752 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:35:24,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:35:24,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:35:24,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:35:24,753 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:35:24,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:35:24,837 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:35:24,840 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:35:24,840 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:35:24,840 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 69 with the following transitions: [2019-09-10 06:35:24,841 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [64], [67], [72], [74], [77], [88], [90], [93], [104], [106], [109], [112], [114], [117], [118], [120], [129], [140], [142], [155], [163], [182], [193], [195], [198], [201], [204], [206], [208], [237], [240], [248], [251], [254], [257], [259], [261], [310], [311], [315], [316], [317] [2019-09-10 06:35:24,848 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:35:24,848 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:35:24,859 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:35:25,072 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 06:35:25,074 INFO L272 AbstractInterpreter]: Visited 58 different actions 265 times. Merged at 31 different actions 175 times. Widened at 10 different actions 21 times. Performed 986 root evaluator evaluations with a maximum evaluation depth of 5. Performed 986 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 14 fixpoints after 9 different actions. Largest state had 98 variables. [2019-09-10 06:35:25,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:35:25,075 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 06:35:25,183 INFO L227 lantSequenceWeakener]: Weakened 42 states. On average, predicates are now at 81.8% of their original sizes. [2019-09-10 06:35:25,183 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 06:35:26,556 INFO L420 sIntCurrentIteration]: We unified 67 AI predicates to 67 [2019-09-10 06:35:26,557 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 06:35:26,557 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 06:35:26,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [41] imperfect sequences [7] total 46 [2019-09-10 06:35:26,557 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:35:26,558 INFO L454 AbstractCegarLoop]: Interpolant automaton has 41 states [2019-09-10 06:35:26,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2019-09-10 06:35:26,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1438, Unknown=0, NotChecked=0, Total=1640 [2019-09-10 06:35:26,558 INFO L87 Difference]: Start difference. First operand 21308 states and 28305 transitions. Second operand 41 states. [2019-09-10 06:35:47,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:35:47,417 INFO L93 Difference]: Finished difference Result 38280 states and 50822 transitions. [2019-09-10 06:35:47,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2019-09-10 06:35:47,418 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 68 [2019-09-10 06:35:47,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:35:47,453 INFO L225 Difference]: With dead ends: 38280 [2019-09-10 06:35:47,454 INFO L226 Difference]: Without dead ends: 38280 [2019-09-10 06:35:47,456 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11421 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=4654, Invalid=27208, Unknown=0, NotChecked=0, Total=31862 [2019-09-10 06:35:47,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38280 states. [2019-09-10 06:35:47,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38280 to 22568. [2019-09-10 06:35:47,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22568 states. [2019-09-10 06:35:47,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22568 states to 22568 states and 29960 transitions. [2019-09-10 06:35:47,787 INFO L78 Accepts]: Start accepts. Automaton has 22568 states and 29960 transitions. Word has length 68 [2019-09-10 06:35:47,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:35:47,788 INFO L475 AbstractCegarLoop]: Abstraction has 22568 states and 29960 transitions. [2019-09-10 06:35:47,788 INFO L476 AbstractCegarLoop]: Interpolant automaton has 41 states. [2019-09-10 06:35:47,788 INFO L276 IsEmpty]: Start isEmpty. Operand 22568 states and 29960 transitions. [2019-09-10 06:35:47,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-10 06:35:47,794 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:35:47,795 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:35:47,795 INFO L418 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:35:47,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:35:47,795 INFO L82 PathProgramCache]: Analyzing trace with hash -2100475535, now seen corresponding path program 1 times [2019-09-10 06:35:47,795 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:35:47,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:35:47,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:35:47,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:35:47,797 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:35:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:35:47,866 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-10 06:35:47,866 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:35:47,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 06:35:47,867 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:35:47,867 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 06:35:47,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 06:35:47,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-10 06:35:47,868 INFO L87 Difference]: Start difference. First operand 22568 states and 29960 transitions. Second operand 5 states. [2019-09-10 06:35:47,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:35:47,999 INFO L93 Difference]: Finished difference Result 30452 states and 40848 transitions. [2019-09-10 06:35:47,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 06:35:47,999 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2019-09-10 06:35:48,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:35:48,034 INFO L225 Difference]: With dead ends: 30452 [2019-09-10 06:35:48,034 INFO L226 Difference]: Without dead ends: 30439 [2019-09-10 06:35:48,035 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-09-10 06:35:48,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30439 states. [2019-09-10 06:35:48,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30439 to 27818. [2019-09-10 06:35:48,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27818 states. [2019-09-10 06:35:48,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27818 states to 27818 states and 37098 transitions. [2019-09-10 06:35:48,423 INFO L78 Accepts]: Start accepts. Automaton has 27818 states and 37098 transitions. Word has length 68 [2019-09-10 06:35:48,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:35:48,424 INFO L475 AbstractCegarLoop]: Abstraction has 27818 states and 37098 transitions. [2019-09-10 06:35:48,424 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 06:35:48,424 INFO L276 IsEmpty]: Start isEmpty. Operand 27818 states and 37098 transitions. [2019-09-10 06:35:48,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-10 06:35:48,433 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:35:48,434 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:35:48,434 INFO L418 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:35:48,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:35:48,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1725794774, now seen corresponding path program 1 times [2019-09-10 06:35:48,435 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:35:48,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:35:48,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:35:48,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:35:48,437 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:35:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:35:48,535 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-10 06:35:48,535 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:35:48,536 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 06:35:48,536 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:35:48,537 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 06:35:48,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 06:35:48,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-10 06:35:48,538 INFO L87 Difference]: Start difference. First operand 27818 states and 37098 transitions. Second operand 5 states. [2019-09-10 06:35:48,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:35:48,722 INFO L93 Difference]: Finished difference Result 35865 states and 48283 transitions. [2019-09-10 06:35:48,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 06:35:48,722 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2019-09-10 06:35:48,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:35:48,770 INFO L225 Difference]: With dead ends: 35865 [2019-09-10 06:35:48,771 INFO L226 Difference]: Without dead ends: 35839 [2019-09-10 06:35:48,771 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-09-10 06:35:48,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35839 states. [2019-09-10 06:35:49,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35839 to 30938. [2019-09-10 06:35:49,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30938 states. [2019-09-10 06:35:49,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30938 states to 30938 states and 41405 transitions. [2019-09-10 06:35:49,462 INFO L78 Accepts]: Start accepts. Automaton has 30938 states and 41405 transitions. Word has length 68 [2019-09-10 06:35:49,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:35:49,462 INFO L475 AbstractCegarLoop]: Abstraction has 30938 states and 41405 transitions. [2019-09-10 06:35:49,463 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 06:35:49,463 INFO L276 IsEmpty]: Start isEmpty. Operand 30938 states and 41405 transitions. [2019-09-10 06:35:49,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-10 06:35:49,468 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:35:49,468 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:35:49,468 INFO L418 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:35:49,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:35:49,469 INFO L82 PathProgramCache]: Analyzing trace with hash -239491906, now seen corresponding path program 1 times [2019-09-10 06:35:49,469 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:35:49,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:35:49,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:35:49,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:35:49,472 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:35:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:35:49,548 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:35:49,549 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:35:49,549 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:35:49,549 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 69 with the following transitions: [2019-09-10 06:35:49,550 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [72], [74], [77], [88], [90], [93], [96], [99], [104], [106], [109], [112], [114], [117], [118], [120], [129], [131], [134], [142], [145], [148], [151], [153], [155], [193], [195], [208], [216], [235], [246], [248], [251], [254], [257], [259], [261], [310], [311], [315], [316], [317] [2019-09-10 06:35:49,553 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:35:49,553 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:35:49,564 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:35:49,709 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 06:35:49,710 INFO L272 AbstractInterpreter]: Visited 58 different actions 358 times. Merged at 31 different actions 255 times. Widened at 13 different actions 43 times. Performed 1271 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1271 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 18 fixpoints after 8 different actions. Largest state had 98 variables. [2019-09-10 06:35:49,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:35:49,710 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 06:35:49,792 INFO L227 lantSequenceWeakener]: Weakened 42 states. On average, predicates are now at 81.88% of their original sizes. [2019-09-10 06:35:49,792 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 06:35:51,642 INFO L420 sIntCurrentIteration]: We unified 67 AI predicates to 67 [2019-09-10 06:35:51,642 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 06:35:51,642 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 06:35:51,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [42] imperfect sequences [7] total 47 [2019-09-10 06:35:51,643 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:35:51,643 INFO L454 AbstractCegarLoop]: Interpolant automaton has 42 states [2019-09-10 06:35:51,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2019-09-10 06:35:51,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1520, Unknown=0, NotChecked=0, Total=1722 [2019-09-10 06:35:51,644 INFO L87 Difference]: Start difference. First operand 30938 states and 41405 transitions. Second operand 42 states. [2019-09-10 06:36:24,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:36:24,568 INFO L93 Difference]: Finished difference Result 60064 states and 79104 transitions. [2019-09-10 06:36:24,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 307 states. [2019-09-10 06:36:24,568 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 68 [2019-09-10 06:36:24,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:36:24,624 INFO L225 Difference]: With dead ends: 60064 [2019-09-10 06:36:24,624 INFO L226 Difference]: Without dead ends: 59960 [2019-09-10 06:36:24,630 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 324 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45476 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=12716, Invalid=93234, Unknown=0, NotChecked=0, Total=105950 [2019-09-10 06:36:24,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59960 states. [2019-09-10 06:36:24,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59960 to 34905. [2019-09-10 06:36:24,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34905 states. [2019-09-10 06:36:25,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34905 states to 34905 states and 46242 transitions. [2019-09-10 06:36:25,002 INFO L78 Accepts]: Start accepts. Automaton has 34905 states and 46242 transitions. Word has length 68 [2019-09-10 06:36:25,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:36:25,002 INFO L475 AbstractCegarLoop]: Abstraction has 34905 states and 46242 transitions. [2019-09-10 06:36:25,002 INFO L476 AbstractCegarLoop]: Interpolant automaton has 42 states. [2019-09-10 06:36:25,002 INFO L276 IsEmpty]: Start isEmpty. Operand 34905 states and 46242 transitions. [2019-09-10 06:36:25,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-10 06:36:25,008 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:36:25,008 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:36:25,009 INFO L418 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:36:25,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:36:25,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1483121734, now seen corresponding path program 1 times [2019-09-10 06:36:25,009 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:36:25,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:36:25,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:36:25,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:36:25,011 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:36:25,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:36:25,080 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-10 06:36:25,081 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:36:25,081 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 06:36:25,081 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:36:25,081 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 06:36:25,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 06:36:25,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-10 06:36:25,082 INFO L87 Difference]: Start difference. First operand 34905 states and 46242 transitions. Second operand 5 states. [2019-09-10 06:36:25,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:36:25,253 INFO L93 Difference]: Finished difference Result 42190 states and 56292 transitions. [2019-09-10 06:36:25,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 06:36:25,254 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2019-09-10 06:36:25,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:36:25,303 INFO L225 Difference]: With dead ends: 42190 [2019-09-10 06:36:25,304 INFO L226 Difference]: Without dead ends: 42190 [2019-09-10 06:36:25,304 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-09-10 06:36:25,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42190 states. [2019-09-10 06:36:25,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42190 to 38911. [2019-09-10 06:36:25,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38911 states. [2019-09-10 06:36:25,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38911 states to 38911 states and 51694 transitions. [2019-09-10 06:36:25,616 INFO L78 Accepts]: Start accepts. Automaton has 38911 states and 51694 transitions. Word has length 68 [2019-09-10 06:36:25,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:36:25,616 INFO L475 AbstractCegarLoop]: Abstraction has 38911 states and 51694 transitions. [2019-09-10 06:36:25,616 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 06:36:25,616 INFO L276 IsEmpty]: Start isEmpty. Operand 38911 states and 51694 transitions. [2019-09-10 06:36:25,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-09-10 06:36:25,623 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:36:25,624 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:36:25,624 INFO L418 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:36:25,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:36:25,624 INFO L82 PathProgramCache]: Analyzing trace with hash -930263548, now seen corresponding path program 1 times [2019-09-10 06:36:25,624 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:36:25,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:36:25,625 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:36:25,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:36:25,626 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:36:25,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:36:25,701 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:36:25,702 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:36:25,702 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:36:25,702 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 72 with the following transitions: [2019-09-10 06:36:25,702 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [64], [67], [72], [74], [77], [88], [90], [93], [96], [99], [104], [106], [109], [112], [114], [117], [118], [120], [129], [131], [134], [142], [145], [148], [151], [153], [155], [193], [195], [208], [216], [235], [237], [240], [248], [251], [254], [257], [259], [261], [310], [311], [315], [316], [317] [2019-09-10 06:36:25,705 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:36:25,705 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:36:25,714 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:36:25,848 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 06:36:25,848 INFO L272 AbstractInterpreter]: Visited 62 different actions 391 times. Merged at 37 different actions 289 times. Widened at 12 different actions 39 times. Performed 1309 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1309 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 23 fixpoints after 12 different actions. Largest state had 98 variables. [2019-09-10 06:36:25,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:36:25,849 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 06:36:25,849 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:36:25,849 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG 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) [2019-09-10 06:36:26,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:36:26,167 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 06:36:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:36:26,248 INFO L256 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-10 06:36:26,260 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 06:36:26,321 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:36:26,321 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 06:36:26,369 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Exception during sending of exit command (exit): Stream closed [2019-09-10 06:36:26,374 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 06:36:26,375 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2019-09-10 06:36:26,375 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 06:36:26,375 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-10 06:36:26,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-10 06:36:26,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-09-10 06:36:26,376 INFO L87 Difference]: Start difference. First operand 38911 states and 51694 transitions. Second operand 11 states. [2019-09-10 06:36:26,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:36:26,875 INFO L93 Difference]: Finished difference Result 73242 states and 96794 transitions. [2019-09-10 06:36:26,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-10 06:36:26,875 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2019-09-10 06:36:26,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:36:26,946 INFO L225 Difference]: With dead ends: 73242 [2019-09-10 06:36:26,946 INFO L226 Difference]: Without dead ends: 73242 [2019-09-10 06:36:26,946 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 134 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2019-09-10 06:36:26,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73242 states. [2019-09-10 06:36:27,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73242 to 44188. [2019-09-10 06:36:27,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44188 states. [2019-09-10 06:36:27,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44188 states to 44188 states and 58776 transitions. [2019-09-10 06:36:27,417 INFO L78 Accepts]: Start accepts. Automaton has 44188 states and 58776 transitions. Word has length 71 [2019-09-10 06:36:27,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:36:27,418 INFO L475 AbstractCegarLoop]: Abstraction has 44188 states and 58776 transitions. [2019-09-10 06:36:27,418 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-10 06:36:27,418 INFO L276 IsEmpty]: Start isEmpty. Operand 44188 states and 58776 transitions. [2019-09-10 06:36:27,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-09-10 06:36:27,425 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:36:27,426 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:36:27,426 INFO L418 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:36:27,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:36:27,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1158196279, now seen corresponding path program 1 times [2019-09-10 06:36:27,426 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:36:27,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:36:27,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:36:27,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:36:27,428 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:36:27,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:36:27,491 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:36:27,492 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:36:27,492 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:36:27,492 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 72 with the following transitions: [2019-09-10 06:36:27,492 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [72], [74], [77], [80], [83], [88], [90], [93], [96], [99], [104], [106], [109], [112], [114], [117], [118], [120], [129], [131], [134], [142], [145], [148], [151], [153], [155], [184], [187], [195], [198], [201], [204], [206], [208], [246], [248], [261], [269], [288], [310], [311], [315], [316], [317] [2019-09-10 06:36:27,494 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:36:27,494 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:36:27,502 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:36:27,605 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 06:36:27,606 INFO L272 AbstractInterpreter]: Visited 62 different actions 360 times. Merged at 37 different actions 260 times. Widened at 11 different actions 27 times. Performed 1167 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1167 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 20 fixpoints after 8 different actions. Largest state had 98 variables. [2019-09-10 06:36:27,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:36:27,606 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 06:36:27,606 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:36:27,607 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG 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) [2019-09-10 06:36:27,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:36:27,627 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 06:36:27,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:36:27,703 INFO L256 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-10 06:36:27,707 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 06:36:27,771 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:36:27,772 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 06:36:27,813 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:36:27,823 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 06:36:27,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2019-09-10 06:36:27,823 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 06:36:27,824 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-10 06:36:27,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-10 06:36:27,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-09-10 06:36:27,824 INFO L87 Difference]: Start difference. First operand 44188 states and 58776 transitions. Second operand 11 states. [2019-09-10 06:36:28,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:36:28,326 INFO L93 Difference]: Finished difference Result 88060 states and 116228 transitions. [2019-09-10 06:36:28,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-10 06:36:28,329 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2019-09-10 06:36:28,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:36:28,416 INFO L225 Difference]: With dead ends: 88060 [2019-09-10 06:36:28,416 INFO L226 Difference]: Without dead ends: 88060 [2019-09-10 06:36:28,417 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 134 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2019-09-10 06:36:28,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88060 states. [2019-09-10 06:36:28,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88060 to 48606. [2019-09-10 06:36:28,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48606 states. [2019-09-10 06:36:28,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48606 states to 48606 states and 64790 transitions. [2019-09-10 06:36:28,965 INFO L78 Accepts]: Start accepts. Automaton has 48606 states and 64790 transitions. Word has length 71 [2019-09-10 06:36:28,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:36:28,966 INFO L475 AbstractCegarLoop]: Abstraction has 48606 states and 64790 transitions. [2019-09-10 06:36:28,966 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-10 06:36:28,966 INFO L276 IsEmpty]: Start isEmpty. Operand 48606 states and 64790 transitions. [2019-09-10 06:36:28,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-09-10 06:36:28,971 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:36:28,971 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:36:28,971 INFO L418 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:36:28,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:36:28,972 INFO L82 PathProgramCache]: Analyzing trace with hash 8068845, now seen corresponding path program 1 times [2019-09-10 06:36:28,972 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:36:28,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:36:28,973 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:36:28,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:36:28,973 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:36:28,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:36:29,155 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:36:29,155 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:36:29,156 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:36:29,156 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 74 with the following transitions: [2019-09-10 06:36:29,156 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [64], [67], [72], [74], [77], [80], [83], [88], [90], [93], [104], [106], [109], [112], [114], [117], [118], [120], [129], [140], [142], [145], [148], [151], [153], [155], [184], [187], [195], [198], [201], [204], [206], [208], [237], [240], [248], [251], [254], [257], [259], [261], [310], [311], [315], [316], [317] [2019-09-10 06:36:29,157 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:36:29,157 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:36:29,165 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:36:29,338 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 06:36:29,339 INFO L272 AbstractInterpreter]: Visited 68 different actions 515 times. Merged at 44 different actions 401 times. Widened at 14 different actions 53 times. Performed 1726 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1726 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 39 fixpoints after 11 different actions. Largest state had 99 variables. [2019-09-10 06:36:29,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:36:29,339 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 06:36:29,339 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:36:29,339 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 06:36:29,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:36:29,354 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 06:36:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:36:30,530 INFO L256 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-10 06:36:30,534 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 06:36:30,677 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:36:31,752 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:36:31,752 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 06:36:32,124 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:36:32,136 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 06:36:32,136 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 28 [2019-09-10 06:36:32,136 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 06:36:32,137 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-10 06:36:32,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-10 06:36:32,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=675, Unknown=0, NotChecked=0, Total=756 [2019-09-10 06:36:32,138 INFO L87 Difference]: Start difference. First operand 48606 states and 64790 transitions. Second operand 19 states. [2019-09-10 06:36:32,877 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2019-09-10 06:36:33,385 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2019-09-10 06:36:33,576 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2019-09-10 06:36:33,877 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2019-09-10 06:36:34,202 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-10 06:36:34,811 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2019-09-10 06:36:35,060 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-10 06:36:35,262 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2019-09-10 06:36:35,457 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-09-10 06:36:35,641 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-10 06:36:35,862 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2019-09-10 06:36:36,067 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-09-10 06:36:36,268 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2019-09-10 06:36:36,466 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2019-09-10 06:36:36,963 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-10 06:36:37,655 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-09-10 06:36:37,933 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2019-09-10 06:36:38,468 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-10 06:36:38,643 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2019-09-10 06:36:38,847 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2019-09-10 06:36:39,048 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-09-10 06:36:39,245 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2019-09-10 06:36:39,473 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2019-09-10 06:36:39,963 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-10 06:36:40,135 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2019-09-10 06:36:40,400 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2019-09-10 06:36:40,896 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-09-10 06:36:41,230 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2019-09-10 06:36:41,480 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-10 06:36:41,636 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2019-09-10 06:36:42,164 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2019-09-10 06:36:42,342 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-10 06:36:42,533 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2019-09-10 06:36:42,707 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-10 06:36:42,877 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2019-09-10 06:36:43,060 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-09-10 06:36:43,228 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2019-09-10 06:36:43,383 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-09-10 06:36:43,584 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2019-09-10 06:36:44,022 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2019-09-10 06:36:44,183 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-09-10 06:36:44,377 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2019-09-10 06:36:44,639 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-09-10 06:36:45,192 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2019-09-10 06:36:45,506 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2019-09-10 06:36:45,723 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-09-10 06:36:46,384 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-10 06:36:46,659 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2019-09-10 06:36:46,853 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-10 06:36:47,156 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-10 06:36:47,771 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2019-09-10 06:36:48,237 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-10 06:36:48,853 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2019-09-10 06:36:49,081 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-09-10 06:36:49,538 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2019-09-10 06:36:49,958 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2019-09-10 06:36:50,179 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-09-10 06:36:50,385 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2019-09-10 06:36:51,346 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2019-09-10 06:36:51,971 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-10 06:36:52,278 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2019-09-10 06:36:52,571 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-10 06:36:52,769 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2019-09-10 06:36:53,298 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2019-09-10 06:36:53,694 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2019-09-10 06:36:53,842 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-09-10 06:36:54,083 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-09-10 06:36:54,396 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-10 06:36:54,684 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2019-09-10 06:36:54,934 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2019-09-10 06:36:55,245 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-09-10 06:36:55,529 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2019-09-10 06:36:55,945 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-10 06:36:56,187 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-09-10 06:36:56,395 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-10 06:36:56,600 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-10 06:36:57,481 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2019-09-10 06:36:57,777 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2019-09-10 06:36:58,212 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2019-09-10 06:36:58,772 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2019-09-10 06:36:58,957 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2019-09-10 06:36:59,130 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2019-09-10 06:36:59,455 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2019-09-10 06:36:59,782 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-10 06:36:59,991 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2019-09-10 06:37:00,169 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2019-09-10 06:37:00,305 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-09-10 06:37:01,161 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2019-09-10 06:37:01,391 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2019-09-10 06:37:01,575 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2019-09-10 06:37:02,533 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-10 06:37:02,801 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-10 06:37:03,077 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-09-10 06:37:03,560 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2019-09-10 06:37:03,738 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2019-09-10 06:37:03,932 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2019-09-10 06:37:04,119 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2019-09-10 06:37:04,489 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2019-09-10 06:37:04,666 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2019-09-10 06:37:05,047 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-10 06:37:05,206 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-10 06:37:05,452 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2019-09-10 06:37:05,831 WARN L188 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2019-09-10 06:37:06,115 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2019-09-10 06:37:06,385 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2019-09-10 06:37:07,056 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2019-09-10 06:37:07,793 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-09-10 06:37:07,982 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2019-09-10 06:37:08,448 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2019-09-10 06:37:08,691 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2019-09-10 06:37:08,943 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-09-10 06:37:09,205 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2019-09-10 06:37:09,377 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2019-09-10 06:37:09,631 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2019-09-10 06:37:10,300 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2019-09-10 06:37:10,667 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2019-09-10 06:37:10,854 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-09-10 06:37:11,081 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2019-09-10 06:37:11,296 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2019-09-10 06:37:11,871 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-09-10 06:37:12,203 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2019-09-10 06:37:12,455 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2019-09-10 06:37:12,655 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2019-09-10 06:37:13,053 WARN L188 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 82 [2019-09-10 06:37:13,468 WARN L188 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2019-09-10 06:37:13,742 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2019-09-10 06:37:13,917 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2019-09-10 06:37:14,131 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2019-09-10 06:37:14,344 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2019-09-10 06:37:14,572 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2019-09-10 06:37:14,725 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-09-10 06:37:14,927 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2019-09-10 06:37:15,989 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-10 06:37:16,307 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-10 06:37:16,706 WARN L188 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 78 [2019-09-10 06:37:16,887 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2019-09-10 06:37:17,260 WARN L188 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 75 [2019-09-10 06:37:17,456 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2019-09-10 06:37:18,017 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2019-09-10 06:37:18,377 WARN L188 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-09-10 06:37:18,719 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-10 06:37:19,334 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-09-10 06:37:19,757 WARN L188 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2019-09-10 06:37:20,145 WARN L188 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-10 06:37:21,077 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2019-09-10 06:37:21,541 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2019-09-10 06:37:21,859 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2019-09-10 06:37:22,595 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2019-09-10 06:37:22,779 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2019-09-10 06:37:23,000 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2019-09-10 06:37:23,301 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2019-09-10 06:37:23,598 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2019-09-10 06:37:24,565 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-10 06:37:24,792 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2019-09-10 06:37:25,094 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2019-09-10 06:37:25,257 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-10 06:37:25,421 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2019-09-10 06:37:26,047 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-10 06:37:26,266 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2019-09-10 06:37:26,971 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2019-09-10 06:37:27,242 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2019-09-10 06:37:27,455 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2019-09-10 06:37:27,799 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2019-09-10 06:37:28,124 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-09-10 06:37:28,317 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-10 06:37:28,630 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-09-10 06:37:29,345 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2019-09-10 06:37:29,650 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2019-09-10 06:37:29,896 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-09-10 06:37:30,136 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2019-09-10 06:37:30,568 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2019-09-10 06:37:30,776 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2019-09-10 06:37:30,946 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-09-10 06:37:31,153 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2019-09-10 06:37:31,467 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2019-09-10 06:37:32,055 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2019-09-10 06:37:32,698 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2019-09-10 06:37:33,029 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2019-09-10 06:37:33,188 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-09-10 06:37:33,341 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2019-09-10 06:37:33,741 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-10 06:37:33,950 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2019-09-10 06:37:34,447 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 72 [2019-09-10 06:37:34,738 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2019-09-10 06:37:34,933 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2019-09-10 06:37:35,179 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2019-09-10 06:37:35,348 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2019-09-10 06:37:35,645 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2019-09-10 06:37:36,375 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2019-09-10 06:37:36,604 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2019-09-10 06:37:37,119 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2019-09-10 06:37:37,265 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-09-10 06:37:37,651 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2019-09-10 06:37:37,835 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-09-10 06:37:38,004 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2019-09-10 06:37:38,314 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-09-10 06:37:38,687 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2019-09-10 06:37:38,851 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2019-09-10 06:37:39,202 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-10 06:37:39,375 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-09-10 06:37:39,677 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2019-09-10 06:37:39,900 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-09-10 06:37:40,134 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2019-09-10 06:37:40,853 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2019-09-10 06:37:41,137 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-10 06:37:41,756 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2019-09-10 06:37:42,013 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2019-09-10 06:37:42,222 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-10 06:37:43,030 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2019-09-10 06:37:43,198 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-09-10 06:37:44,282 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2019-09-10 06:37:44,537 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2019-09-10 06:37:45,458 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-10 06:37:45,691 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2019-09-10 06:37:46,238 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-09-10 06:37:46,723 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2019-09-10 06:37:47,001 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2019-09-10 06:37:47,202 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2019-09-10 06:37:47,611 WARN L188 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2019-09-10 06:37:47,907 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2019-09-10 06:37:48,116 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2019-09-10 06:37:48,347 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2019-09-10 06:37:48,519 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2019-09-10 06:37:48,671 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2019-09-10 06:37:49,134 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2019-09-10 06:37:49,375 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2019-09-10 06:37:49,583 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2019-09-10 06:37:50,119 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2019-09-10 06:37:50,411 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2019-09-10 06:37:50,685 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2019-09-10 06:37:50,985 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 72 [2019-09-10 06:37:51,154 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2019-09-10 06:37:51,458 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2019-09-10 06:37:52,087 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2019-09-10 06:37:52,648 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2019-09-10 06:37:52,892 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2019-09-10 06:37:53,224 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-10 06:37:53,559 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2019-09-10 06:37:53,801 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-09-10 06:37:54,068 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2019-09-10 06:37:54,390 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2019-09-10 06:37:54,676 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2019-09-10 06:37:55,029 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2019-09-10 06:37:55,715 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2019-09-10 06:37:55,989 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2019-09-10 06:37:56,303 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-10 06:37:56,578 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2019-09-10 06:37:56,915 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2019-09-10 06:37:57,168 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-09-10 06:37:57,431 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2019-09-10 06:37:58,023 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-09-10 06:37:58,302 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2019-09-10 06:37:58,689 WARN L188 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2019-09-10 06:37:58,930 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2019-09-10 06:37:59,248 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-09-10 06:37:59,607 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2019-09-10 06:38:00,024 WARN L188 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 79 [2019-09-10 06:38:00,439 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2019-09-10 06:38:01,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:38:01,592 INFO L93 Difference]: Finished difference Result 678553 states and 877661 transitions. [2019-09-10 06:38:01,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 480 states. [2019-09-10 06:38:01,593 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 73 [2019-09-10 06:38:01,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:38:06,227 INFO L225 Difference]: With dead ends: 678553 [2019-09-10 06:38:06,227 INFO L226 Difference]: Without dead ends: 678128 [2019-09-10 06:38:06,233 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 115 SyntacticMatches, 15 SemanticMatches, 504 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116892 ImplicationChecksByTransitivity, 74.0s TimeCoverageRelationStatistics Valid=26552, Invalid=228978, Unknown=0, NotChecked=0, Total=255530 [2019-09-10 06:38:06,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678128 states. [2019-09-10 06:38:10,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678128 to 213078. [2019-09-10 06:38:10,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213078 states. [2019-09-10 06:38:10,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213078 states to 213078 states and 284580 transitions. [2019-09-10 06:38:10,685 INFO L78 Accepts]: Start accepts. Automaton has 213078 states and 284580 transitions. Word has length 73 [2019-09-10 06:38:10,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:38:10,685 INFO L475 AbstractCegarLoop]: Abstraction has 213078 states and 284580 transitions. [2019-09-10 06:38:10,685 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-10 06:38:10,685 INFO L276 IsEmpty]: Start isEmpty. Operand 213078 states and 284580 transitions. [2019-09-10 06:38:10,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-09-10 06:38:10,692 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:38:10,692 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:38:10,692 INFO L418 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:38:10,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:38:10,693 INFO L82 PathProgramCache]: Analyzing trace with hash -478766986, now seen corresponding path program 1 times [2019-09-10 06:38:10,693 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:38:10,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:38:10,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:38:10,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:38:10,694 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:38:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:38:10,849 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:38:10,850 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:38:10,850 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:38:10,850 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 74 with the following transitions: [2019-09-10 06:38:10,850 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [64], [67], [72], [74], [77], [88], [90], [93], [96], [99], [104], [106], [109], [112], [114], [117], [118], [120], [129], [131], [134], [142], [145], [148], [151], [153], [155], [193], [195], [198], [201], [204], [206], [208], [237], [240], [248], [251], [254], [257], [259], [261], [310], [311], [315], [316], [317] [2019-09-10 06:38:10,852 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:38:10,852 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:38:10,860 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:38:11,050 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 06:38:11,051 INFO L272 AbstractInterpreter]: Visited 68 different actions 512 times. Merged at 44 different actions 397 times. Widened at 15 different actions 61 times. Performed 1749 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1749 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 39 fixpoints after 16 different actions. Largest state had 99 variables. [2019-09-10 06:38:11,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:38:11,051 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 06:38:11,051 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:38:11,052 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG 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 [2019-09-10 06:38:11,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:38:11,083 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 06:38:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:38:11,189 INFO L256 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-10 06:38:11,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 06:38:11,302 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:38:11,558 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:38:11,559 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 06:38:11,681 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:38:11,773 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:38:11,785 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 06:38:11,786 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2019-09-10 06:38:11,786 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 06:38:11,786 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-10 06:38:11,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-10 06:38:11,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2019-09-10 06:38:11,787 INFO L87 Difference]: Start difference. First operand 213078 states and 284580 transitions. Second operand 17 states. [2019-09-10 06:38:20,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:38:20,648 INFO L93 Difference]: Finished difference Result 392287 states and 515868 transitions. [2019-09-10 06:38:20,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2019-09-10 06:38:20,648 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 73 [2019-09-10 06:38:20,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:38:21,104 INFO L225 Difference]: With dead ends: 392287 [2019-09-10 06:38:21,104 INFO L226 Difference]: Without dead ends: 392190 [2019-09-10 06:38:21,105 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1450 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1248, Invalid=3864, Unknown=0, NotChecked=0, Total=5112 [2019-09-10 06:38:21,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392190 states. [2019-09-10 06:38:23,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392190 to 212617. [2019-09-10 06:38:24,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212617 states. [2019-09-10 06:38:24,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212617 states to 212617 states and 283200 transitions. [2019-09-10 06:38:24,283 INFO L78 Accepts]: Start accepts. Automaton has 212617 states and 283200 transitions. Word has length 73 [2019-09-10 06:38:24,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:38:24,283 INFO L475 AbstractCegarLoop]: Abstraction has 212617 states and 283200 transitions. [2019-09-10 06:38:24,283 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-10 06:38:24,284 INFO L276 IsEmpty]: Start isEmpty. Operand 212617 states and 283200 transitions. [2019-09-10 06:38:24,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-09-10 06:38:24,290 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:38:24,290 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] [2019-09-10 06:38:24,290 INFO L418 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:38:24,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:38:24,291 INFO L82 PathProgramCache]: Analyzing trace with hash -174967646, now seen corresponding path program 1 times [2019-09-10 06:38:24,291 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:38:24,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:38:24,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:38:24,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:38:24,292 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:38:24,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:38:24,342 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:38:24,342 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:38:24,342 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:38:24,342 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:38:24,343 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:38:24,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:38:24,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:38:24,343 INFO L87 Difference]: Start difference. First operand 212617 states and 283200 transitions. Second operand 3 states. [2019-09-10 06:38:24,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:38:24,792 INFO L93 Difference]: Finished difference Result 192592 states and 252681 transitions. [2019-09-10 06:38:24,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:38:24,793 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2019-09-10 06:38:24,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:38:25,009 INFO L225 Difference]: With dead ends: 192592 [2019-09-10 06:38:25,010 INFO L226 Difference]: Without dead ends: 192592 [2019-09-10 06:38:25,010 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 [2019-09-10 06:38:25,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192592 states. [2019-09-10 06:38:27,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192592 to 160289. [2019-09-10 06:38:27,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160289 states. [2019-09-10 06:38:27,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160289 states to 160289 states and 210385 transitions. [2019-09-10 06:38:27,289 INFO L78 Accepts]: Start accepts. Automaton has 160289 states and 210385 transitions. Word has length 74 [2019-09-10 06:38:27,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:38:27,289 INFO L475 AbstractCegarLoop]: Abstraction has 160289 states and 210385 transitions. [2019-09-10 06:38:27,289 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:38:27,289 INFO L276 IsEmpty]: Start isEmpty. Operand 160289 states and 210385 transitions. [2019-09-10 06:38:27,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-09-10 06:38:27,294 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:38:27,295 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:38:27,295 INFO L418 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:38:27,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:38:27,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1720837308, now seen corresponding path program 1 times [2019-09-10 06:38:27,295 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:38:27,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:38:27,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:38:27,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:38:27,296 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:38:27,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:38:28,004 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:38:28,005 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:38:28,005 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:38:28,005 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 76 with the following transitions: [2019-09-10 06:38:28,005 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [64], [67], [72], [74], [77], [80], [83], [86], [88], [90], [93], [96], [99], [104], [106], [109], [112], [114], [117], [118], [120], [129], [131], [134], [142], [145], [148], [151], [153], [155], [195], [198], [201], [204], [206], [208], [237], [240], [248], [251], [254], [257], [259], [261], [310], [311], [315], [316], [317] [2019-09-10 06:38:28,006 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:38:28,007 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:38:28,013 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:38:28,253 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 06:38:28,253 INFO L272 AbstractInterpreter]: Visited 70 different actions 682 times. Merged at 46 different actions 552 times. Widened at 16 different actions 86 times. Performed 2229 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2229 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 58 fixpoints after 16 different actions. Largest state had 99 variables. [2019-09-10 06:38:28,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:38:28,253 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 06:38:28,253 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:38:28,254 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 06:38:28,274 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:38:28,274 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 06:38:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:38:28,354 INFO L256 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 23 conjunts are in the unsatisfiable core [2019-09-10 06:38:28,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 06:38:28,580 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:38:28,879 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:38:28,880 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 06:38:29,432 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:38:29,440 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 06:38:29,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 13] total 39 [2019-09-10 06:38:29,441 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 06:38:29,441 INFO L454 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-09-10 06:38:29,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-09-10 06:38:29,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1359, Unknown=0, NotChecked=0, Total=1482 [2019-09-10 06:38:29,442 INFO L87 Difference]: Start difference. First operand 160289 states and 210385 transitions. Second operand 28 states. [2019-09-10 06:38:33,825 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2019-09-10 06:38:34,826 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 47 [2019-09-10 06:38:38,050 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2019-09-10 06:38:38,267 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2019-09-10 06:38:39,156 WARN L188 SmtUtils]: Spent 840.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2019-09-10 06:38:39,400 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2019-09-10 06:38:40,967 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2019-09-10 06:38:41,329 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2019-09-10 06:38:41,550 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2019-09-10 06:38:41,793 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2019-09-10 06:38:42,101 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2019-09-10 06:38:42,367 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 71 [2019-09-10 06:38:42,563 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2019-09-10 06:38:42,753 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-09-10 06:38:43,030 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2019-09-10 06:38:43,354 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 76 [2019-09-10 06:38:43,595 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2019-09-10 06:38:43,804 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2019-09-10 06:38:44,012 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-09-10 06:38:44,270 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2019-09-10 06:38:44,650 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-09-10 06:38:45,631 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2019-09-10 06:38:45,845 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-09-10 06:38:46,583 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2019-09-10 06:38:47,318 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 48 [2019-09-10 06:38:47,504 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 06:38:48,292 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2019-09-10 06:38:48,790 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2019-09-10 06:38:49,043 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2019-09-10 06:38:49,210 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46 [2019-09-10 06:38:49,383 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2019-09-10 06:38:50,250 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-09-10 06:38:50,415 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2019-09-10 06:38:50,604 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2019-09-10 06:38:50,956 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-09-10 06:38:52,121 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2019-09-10 06:38:52,320 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 57 [2019-09-10 06:38:52,657 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-09-10 06:38:52,950 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2019-09-10 06:38:53,139 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2019-09-10 06:38:53,395 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2019-09-10 06:38:53,644 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2019-09-10 06:38:53,858 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2019-09-10 06:38:54,393 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2019-09-10 06:38:55,066 WARN L188 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2019-09-10 06:38:55,333 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2019-09-10 06:38:55,630 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2019-09-10 06:38:55,996 WARN L188 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2019-09-10 06:38:56,291 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2019-09-10 06:38:56,658 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2019-09-10 06:38:56,898 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2019-09-10 06:38:57,067 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2019-09-10 06:38:57,415 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-09-10 06:38:57,663 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2019-09-10 06:38:57,841 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 57 [2019-09-10 06:38:58,011 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 46 [2019-09-10 06:38:58,308 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2019-09-10 06:38:58,532 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2019-09-10 06:38:58,729 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2019-09-10 06:38:59,143 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2019-09-10 06:38:59,391 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2019-09-10 06:38:59,672 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2019-09-10 06:38:59,921 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2019-09-10 06:39:00,302 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2019-09-10 06:39:00,484 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2019-09-10 06:39:00,765 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2019-09-10 06:39:01,021 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 54 [2019-09-10 06:39:01,494 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2019-09-10 06:39:01,689 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2019-09-10 06:39:01,853 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2019-09-10 06:39:02,137 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2019-09-10 06:39:02,557 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2019-09-10 06:39:02,724 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-09-10 06:39:02,936 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-09-10 06:39:03,278 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-09-10 06:39:03,502 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 61 [2019-09-10 06:39:03,662 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 46 [2019-09-10 06:39:03,959 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2019-09-10 06:39:04,143 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2019-09-10 06:39:04,432 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-09-10 06:39:04,690 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2019-09-10 06:39:05,050 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2019-09-10 06:39:05,284 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2019-09-10 06:39:05,465 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2019-09-10 06:39:06,278 WARN L188 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2019-09-10 06:39:06,604 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2019-09-10 06:39:06,806 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2019-09-10 06:39:07,075 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2019-09-10 06:39:07,324 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2019-09-10 06:39:07,734 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2019-09-10 06:39:08,006 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2019-09-10 06:39:08,205 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 54 [2019-09-10 06:39:08,363 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2019-09-10 06:39:08,662 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2019-09-10 06:39:08,885 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2019-09-10 06:39:09,211 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2019-09-10 06:39:09,414 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2019-09-10 06:39:09,683 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2019-09-10 06:39:09,886 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2019-09-10 06:39:10,049 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-09-10 06:39:10,253 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2019-09-10 06:39:10,757 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 83 [2019-09-10 06:39:11,101 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-10 06:39:11,413 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-09-10 06:39:11,654 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2019-09-10 06:39:11,888 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 61 [2019-09-10 06:39:12,071 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 46 [2019-09-10 06:39:12,370 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 58 [2019-09-10 06:39:12,714 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 71 [2019-09-10 06:39:13,078 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 83 [2019-09-10 06:39:13,370 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 72 [2019-09-10 06:39:13,622 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2019-09-10 06:39:13,896 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2019-09-10 06:39:14,089 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 54 [2019-09-10 06:39:14,365 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2019-09-10 06:39:14,604 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2019-09-10 06:39:14,928 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 83 [2019-09-10 06:39:15,163 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 81 [2019-09-10 06:39:15,528 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 71 [2019-09-10 06:39:15,881 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 83 [2019-09-10 06:39:16,089 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2019-09-10 06:39:18,121 WARN L188 SmtUtils]: Spent 1.93 s on a formula simplification. DAG size of input: 90 DAG size of output: 63 [2019-09-10 06:39:18,368 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 75 [2019-09-10 06:39:18,578 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 64 [2019-09-10 06:39:18,774 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2019-09-10 06:39:18,975 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 62 [2019-09-10 06:39:19,370 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 88 [2019-09-10 06:39:19,664 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 76 [2019-09-10 06:39:19,878 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 62 [2019-09-10 06:39:20,086 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 58 [2019-09-10 06:39:20,550 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2019-09-10 06:39:21,226 WARN L188 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 88 [2019-09-10 06:39:21,593 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 80 [2019-09-10 06:39:21,812 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2019-09-10 06:39:22,046 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2019-09-10 06:39:22,339 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 71 [2019-09-10 06:39:22,557 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2019-09-10 06:39:22,921 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2019-09-10 06:39:23,557 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2019-09-10 06:39:23,739 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2019-09-10 06:39:24,099 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 77 [2019-09-10 06:39:24,338 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2019-09-10 06:39:24,501 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2019-09-10 06:39:24,784 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 73 [2019-09-10 06:39:25,018 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 61 [2019-09-10 06:39:25,379 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2019-09-10 06:39:25,639 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 73 [2019-09-10 06:39:25,802 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 49 [2019-09-10 06:39:26,076 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2019-09-10 06:39:26,346 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2019-09-10 06:39:26,553 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 44 [2019-09-10 06:39:26,831 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2019-09-10 06:39:27,400 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 83 [2019-09-10 06:39:27,727 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 79 [2019-09-10 06:39:28,038 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 79 [2019-09-10 06:39:28,258 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 54 [2019-09-10 06:39:28,453 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2019-09-10 06:39:28,626 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 53 [2019-09-10 06:39:29,181 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 48 [2019-09-10 06:39:30,471 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2019-09-10 06:39:31,756 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2019-09-10 06:39:32,050 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2019-09-10 06:39:32,297 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2019-09-10 06:39:32,513 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2019-09-10 06:39:33,455 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2019-09-10 06:39:35,092 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2019-09-10 06:39:35,266 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2019-09-10 06:39:35,669 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2019-09-10 06:39:35,848 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2019-09-10 06:39:36,671 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2019-09-10 06:39:37,507 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2019-09-10 06:39:37,805 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 49 [2019-09-10 06:39:40,083 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 53 [2019-09-10 06:39:40,243 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-10 06:39:40,397 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 06:39:41,293 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2019-09-10 06:39:42,149 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2019-09-10 06:39:43,557 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2019-09-10 06:39:43,746 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2019-09-10 06:39:44,323 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 46 [2019-09-10 06:39:44,557 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2019-09-10 06:39:44,782 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2019-09-10 06:39:45,040 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-09-10 06:39:45,480 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-09-10 06:39:46,012 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2019-09-10 06:39:46,218 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2019-09-10 06:39:46,389 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2019-09-10 06:39:47,449 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2019-09-10 06:39:47,699 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56 [2019-09-10 06:39:47,948 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 50 [2019-09-10 06:39:48,132 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2019-09-10 06:39:48,342 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 06:39:48,932 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-10 06:39:49,241 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2019-09-10 06:39:49,409 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 47 [2019-09-10 06:39:49,630 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2019-09-10 06:39:49,851 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2019-09-10 06:39:50,786 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2019-09-10 06:39:51,219 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2019-09-10 06:39:51,382 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2019-09-10 06:39:51,679 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2019-09-10 06:39:51,859 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2019-09-10 06:39:52,144 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 54 [2019-09-10 06:39:52,315 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2019-09-10 06:39:52,484 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2019-09-10 06:39:52,639 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 48 [2019-09-10 06:39:53,006 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2019-09-10 06:39:53,187 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-10 06:39:53,396 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2019-09-10 06:39:53,586 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 57 [2019-09-10 06:39:53,888 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 47 [2019-09-10 06:39:54,152 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2019-09-10 06:39:54,455 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-10 06:39:55,540 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2019-09-10 06:39:55,721 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 53 [2019-09-10 06:39:56,514 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2019-09-10 06:39:56,817 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2019-09-10 06:39:57,068 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2019-09-10 06:39:57,461 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2019-09-10 06:39:57,664 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56 [2019-09-10 06:39:57,841 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 45 [2019-09-10 06:39:58,017 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2019-09-10 06:39:58,177 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2019-09-10 06:39:58,495 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2019-09-10 06:39:59,629 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2019-09-10 06:39:59,969 WARN L188 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2019-09-10 06:40:00,412 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2019-09-10 06:40:00,662 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2019-09-10 06:40:00,812 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2019-09-10 06:40:01,144 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2019-09-10 06:40:01,404 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 58 [2019-09-10 06:40:01,639 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2019-09-10 06:40:01,893 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 54 [2019-09-10 06:40:02,102 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2019-09-10 06:40:02,332 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2019-09-10 06:40:03,002 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 74 [2019-09-10 06:40:03,154 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2019-09-10 06:40:03,436 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 74 [2019-09-10 06:40:04,264 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 51 [2019-09-10 06:40:04,474 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2019-09-10 06:40:04,754 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 79 [2019-09-10 06:40:05,087 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2019-09-10 06:40:05,269 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-09-10 06:40:05,548 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 79 [2019-09-10 06:40:05,885 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 58 [2019-09-10 06:40:06,131 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 60 [2019-09-10 06:40:06,363 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56 [2019-09-10 06:40:06,596 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56 [2019-09-10 06:40:06,755 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2019-09-10 06:40:06,989 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2019-09-10 06:40:07,138 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2019-09-10 06:40:07,402 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2019-09-10 06:40:07,720 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2019-09-10 06:40:08,271 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-09-10 06:40:08,876 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2019-09-10 06:40:09,088 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2019-09-10 06:40:09,273 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2019-09-10 06:40:09,531 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 73 [2019-09-10 06:40:09,696 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2019-09-10 06:40:09,942 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 69 [2019-09-10 06:40:10,180 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2019-09-10 06:40:10,506 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2019-09-10 06:40:10,715 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 57 [2019-09-10 06:40:10,933 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2019-09-10 06:40:11,114 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2019-09-10 06:40:11,296 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2019-09-10 06:40:11,526 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2019-09-10 06:40:11,875 WARN L188 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2019-09-10 06:40:12,499 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 58 [2019-09-10 06:40:12,771 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2019-09-10 06:40:14,312 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-10 06:40:14,519 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2019-09-10 06:40:14,718 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-09-10 06:40:14,958 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 74 [2019-09-10 06:40:15,522 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 74 [2019-09-10 06:40:15,683 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 54 [2019-09-10 06:40:15,928 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2019-09-10 06:40:16,239 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 79 [2019-09-10 06:40:16,435 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 54 [2019-09-10 06:40:16,669 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2019-09-10 06:40:16,987 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 79 [2019-09-10 06:40:17,211 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 58 [2019-09-10 06:40:17,481 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 60 [2019-09-10 06:40:17,687 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2019-09-10 06:40:17,870 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2019-09-10 06:40:18,063 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2019-09-10 06:40:18,628 WARN L188 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2019-09-10 06:40:18,868 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 79 [2019-09-10 06:40:19,281 WARN L188 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 80 [2019-09-10 06:40:19,463 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2019-09-10 06:40:19,705 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 71 [2019-09-10 06:40:20,062 WARN L188 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 84 [2019-09-10 06:40:20,296 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 66 [2019-09-10 06:40:20,561 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 63 [2019-09-10 06:40:20,727 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-09-10 06:40:20,988 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 75 [2019-09-10 06:40:21,187 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2019-09-10 06:40:21,400 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 62 [2019-09-10 06:40:21,655 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 71 [2019-09-10 06:40:21,889 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2019-09-10 06:40:22,129 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2019-09-10 06:40:22,396 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 79 [2019-09-10 06:40:22,745 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 84 [2019-09-10 06:40:23,395 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56 [2019-09-10 06:40:23,740 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2019-09-10 06:40:23,949 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2019-09-10 06:40:24,332 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-10 06:40:24,634 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 76 [2019-09-10 06:40:24,914 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 72 [2019-09-10 06:40:25,102 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 62 [2019-09-10 06:40:25,365 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 59 [2019-09-10 06:40:25,524 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-09-10 06:40:25,734 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 71 [2019-09-10 06:40:26,053 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 80 [2019-09-10 06:40:26,314 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2019-09-10 06:40:26,594 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 76 [2019-09-10 06:40:26,849 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 76 [2019-09-10 06:40:27,158 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 84 [2019-09-10 06:40:27,605 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2019-09-10 06:40:27,855 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 76 [2019-09-10 06:40:28,111 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 62 [2019-09-10 06:40:28,299 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2019-09-10 06:40:28,509 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2019-09-10 06:40:28,667 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2019-09-10 06:40:29,030 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-10 06:40:29,237 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2019-09-10 06:40:29,441 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 58 [2019-09-10 06:40:29,666 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2019-09-10 06:40:29,936 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2019-09-10 06:40:30,172 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 58 [2019-09-10 06:40:30,495 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 73 [2019-09-10 06:40:30,751 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 69 [2019-09-10 06:40:31,278 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 67 [2019-09-10 06:40:31,857 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2019-09-10 06:40:32,033 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2019-09-10 06:40:32,514 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 79 [2019-09-10 06:40:32,799 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 75 [2019-09-10 06:40:33,457 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2019-09-10 06:40:34,010 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-10 06:40:35,068 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-10 06:40:35,390 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2019-09-10 06:40:36,581 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2019-09-10 06:40:37,007 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2019-09-10 06:40:37,421 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2019-09-10 06:40:38,814 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 59 [2019-09-10 06:40:39,395 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2019-09-10 06:40:39,578 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2019-09-10 06:40:41,610 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2019-09-10 06:40:42,870 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2019-09-10 06:40:43,181 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-10 06:40:43,351 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-10 06:40:43,521 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2019-09-10 06:40:43,943 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 63 [2019-09-10 06:40:44,393 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2019-09-10 06:40:44,584 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2019-09-10 06:40:44,739 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2019-09-10 06:40:45,091 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-09-10 06:40:45,440 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 59 [2019-09-10 06:40:45,706 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2019-09-10 06:40:45,906 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-09-10 06:40:46,413 WARN L188 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2019-09-10 06:40:46,600 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-10 06:40:46,953 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2019-09-10 06:40:47,180 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2019-09-10 06:40:47,374 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2019-09-10 06:40:47,641 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 73 [2019-09-10 06:40:49,035 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2019-09-10 06:40:49,578 WARN L188 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-09-10 06:40:49,728 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2019-09-10 06:40:50,202 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2019-09-10 06:40:50,457 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 69 [2019-09-10 06:40:50,679 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 65 [2019-09-10 06:40:51,073 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 56 [2019-09-10 06:40:51,568 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-09-10 06:40:52,132 WARN L188 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-09-10 06:40:52,319 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2019-09-10 06:40:53,498 WARN L188 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2019-09-10 06:40:54,141 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2019-09-10 06:40:54,347 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 61 [2019-09-10 06:40:54,590 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2019-09-10 06:40:54,934 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2019-09-10 06:40:55,564 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 06:40:55,738 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2019-09-10 06:40:56,137 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2019-09-10 06:40:56,310 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-10 06:40:56,879 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 63 [2019-09-10 06:40:57,720 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2019-09-10 06:40:57,889 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2019-09-10 06:40:58,499 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2019-09-10 06:40:58,833 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 61 [2019-09-10 06:40:59,086 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2019-09-10 06:40:59,990 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2019-09-10 06:41:00,247 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2019-09-10 06:41:00,440 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2019-09-10 06:41:00,637 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2019-09-10 06:41:01,017 WARN L188 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-09-10 06:41:01,277 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2019-09-10 06:41:02,488 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 58 [2019-09-10 06:41:02,764 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2019-09-10 06:41:03,356 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2019-09-10 06:41:03,544 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2019-09-10 06:41:04,151 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-09-10 06:41:04,345 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2019-09-10 06:41:04,557 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-09-10 06:41:04,761 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 74 [2019-09-10 06:41:05,243 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2019-09-10 06:41:05,417 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2019-09-10 06:41:05,988 WARN L188 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-09-10 06:41:06,348 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-09-10 06:41:06,514 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2019-09-10 06:41:06,674 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2019-09-10 06:41:06,917 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 52 [2019-09-10 06:41:07,108 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-10 06:41:07,274 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-10 06:41:07,552 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2019-09-10 06:41:07,741 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 54 [2019-09-10 06:41:07,955 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 64 [2019-09-10 06:41:08,278 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-09-10 06:41:08,450 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-09-10 06:41:08,785 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-09-10 06:41:08,949 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-09-10 06:41:09,114 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2019-09-10 06:41:09,706 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2019-09-10 06:41:10,351 WARN L188 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-09-10 06:41:10,519 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2019-09-10 06:41:10,761 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 79 [2019-09-10 06:41:10,925 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2019-09-10 06:41:11,185 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2019-09-10 06:41:11,486 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 67 [2019-09-10 06:41:11,953 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2019-09-10 06:41:12,193 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2019-09-10 06:41:12,341 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2019-09-10 06:41:12,749 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2019-09-10 06:41:12,916 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2019-09-10 06:41:13,231 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2019-09-10 06:41:13,956 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2019-09-10 06:41:14,135 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2019-09-10 06:41:14,381 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2019-09-10 06:41:14,948 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2019-09-10 06:41:15,151 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2019-09-10 06:41:15,481 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2019-09-10 06:41:15,739 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2019-09-10 06:41:15,940 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2019-09-10 06:41:16,245 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2019-09-10 06:41:16,440 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2019-09-10 06:41:16,606 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-10 06:41:16,947 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2019-09-10 06:41:17,873 WARN L188 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-10 06:41:18,169 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2019-09-10 06:41:18,387 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2019-09-10 06:41:18,652 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-09-10 06:41:18,850 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-09-10 06:41:19,030 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2019-09-10 06:41:19,228 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 54 [2019-09-10 06:41:19,454 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 67 [2019-09-10 06:41:19,636 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2019-09-10 06:41:19,802 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2019-09-10 06:41:19,966 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2019-09-10 06:41:20,477 WARN L188 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2019-09-10 06:41:20,855 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 65 [2019-09-10 06:41:21,088 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2019-09-10 06:41:21,378 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 79 [2019-09-10 06:41:22,136 WARN L188 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2019-09-10 06:41:22,526 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 52 [2019-09-10 06:41:22,837 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2019-09-10 06:41:23,192 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2019-09-10 06:41:23,492 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2019-09-10 06:41:23,797 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2019-09-10 06:41:24,842 WARN L188 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2019-09-10 06:41:25,061 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 71 [2019-09-10 06:41:25,372 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 84 [2019-09-10 06:41:25,597 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2019-09-10 06:41:25,810 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2019-09-10 06:41:26,373 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-09-10 06:41:26,984 WARN L188 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2019-09-10 06:41:27,231 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 76 [2019-09-10 06:41:27,564 WARN L188 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2019-09-10 06:41:27,750 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 57 [2019-09-10 06:41:27,983 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-09-10 06:41:28,289 WARN L188 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2019-09-10 06:41:28,474 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2019-09-10 06:41:28,730 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2019-09-10 06:41:28,938 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2019-09-10 06:41:29,198 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2019-09-10 06:41:29,596 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-09-10 06:41:29,992 WARN L188 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 74 [2019-09-10 06:41:30,423 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 74 [2019-09-10 06:41:30,654 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2019-09-10 06:41:30,861 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 41 [2019-09-10 06:41:31,367 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 57 [2019-09-10 06:41:31,602 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2019-09-10 06:41:31,816 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 69 [2019-09-10 06:41:32,209 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2019-09-10 06:41:32,863 WARN L188 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2019-09-10 06:41:33,098 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2019-09-10 06:41:33,381 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2019-09-10 06:41:33,592 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2019-09-10 06:41:33,821 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 74 [2019-09-10 06:41:34,270 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 75 [2019-09-10 06:41:34,668 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2019-09-10 06:41:34,959 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2019-09-10 06:41:35,970 WARN L188 SmtUtils]: Spent 936.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2019-09-10 06:41:36,302 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2019-09-10 06:41:36,474 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-10 06:41:36,879 WARN L188 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2019-09-10 06:41:37,156 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2019-09-10 06:41:37,859 WARN L188 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 74 [2019-09-10 06:41:38,071 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2019-09-10 06:41:38,721 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2019-09-10 06:41:38,953 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2019-09-10 06:41:39,218 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2019-09-10 06:41:39,388 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2019-09-10 06:41:40,324 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2019-09-10 06:41:40,789 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2019-09-10 06:41:40,978 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-09-10 06:41:41,348 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2019-09-10 06:41:42,235 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2019-09-10 06:41:42,546 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2019-09-10 06:41:44,207 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2019-09-10 06:41:45,132 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2019-09-10 06:41:45,968 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-10 06:41:46,656 WARN L188 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2019-09-10 06:41:47,353 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2019-09-10 06:41:47,539 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2019-09-10 06:41:47,858 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2019-09-10 06:41:49,304 WARN L188 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2019-09-10 06:41:50,276 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2019-09-10 06:41:50,907 WARN L188 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2019-09-10 06:41:51,712 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2019-09-10 06:41:53,312 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2019-09-10 06:41:54,646 WARN L188 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2019-09-10 06:41:54,862 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2019-09-10 06:41:59,165 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2019-09-10 06:42:05,334 WARN L188 SmtUtils]: Spent 5.98 s on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2019-09-10 06:42:06,097 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2019-09-10 06:42:06,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:42:06,502 INFO L93 Difference]: Finished difference Result 1362303 states and 1778691 transitions. [2019-09-10 06:42:06,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 911 states. [2019-09-10 06:42:06,502 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 75 [2019-09-10 06:42:06,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:42:08,170 INFO L225 Difference]: With dead ends: 1362303 [2019-09-10 06:42:08,170 INFO L226 Difference]: Without dead ends: 1362303 [2019-09-10 06:42:08,191 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1066 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 936 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426252 ImplicationChecksByTransitivity, 182.8s TimeCoverageRelationStatistics Valid=69158, Invalid=809748, Unknown=0, NotChecked=0, Total=878906 [2019-09-10 06:42:09,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362303 states. [2019-09-10 06:42:20,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362303 to 229442. [2019-09-10 06:42:20,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229442 states. [2019-09-10 06:42:20,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229442 states to 229442 states and 303577 transitions. [2019-09-10 06:42:20,908 INFO L78 Accepts]: Start accepts. Automaton has 229442 states and 303577 transitions. Word has length 75 [2019-09-10 06:42:20,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:42:20,908 INFO L475 AbstractCegarLoop]: Abstraction has 229442 states and 303577 transitions. [2019-09-10 06:42:20,909 INFO L476 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-09-10 06:42:20,909 INFO L276 IsEmpty]: Start isEmpty. Operand 229442 states and 303577 transitions. [2019-09-10 06:42:20,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-10 06:42:20,924 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:42:20,924 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 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] [2019-09-10 06:42:20,924 INFO L418 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:42:20,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:42:20,925 INFO L82 PathProgramCache]: Analyzing trace with hash -348594634, now seen corresponding path program 1 times [2019-09-10 06:42:20,925 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:42:20,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:42:20,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:42:20,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:42:20,926 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:42:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:42:20,963 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-10 06:42:20,964 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:42:20,964 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:42:20,964 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:42:20,965 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:42:20,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:42:20,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:42:20,966 INFO L87 Difference]: Start difference. First operand 229442 states and 303577 transitions. Second operand 3 states. [2019-09-10 06:42:21,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:42:21,528 INFO L93 Difference]: Finished difference Result 201799 states and 264199 transitions. [2019-09-10 06:42:21,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:42:21,529 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2019-09-10 06:42:21,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:42:21,748 INFO L225 Difference]: With dead ends: 201799 [2019-09-10 06:42:21,748 INFO L226 Difference]: Without dead ends: 201799 [2019-09-10 06:42:21,748 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 [2019-09-10 06:42:21,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201799 states. [2019-09-10 06:42:30,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201799 to 199416. [2019-09-10 06:42:30,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199416 states. [2019-09-10 06:42:30,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199416 states to 199416 states and 261043 transitions. [2019-09-10 06:42:30,871 INFO L78 Accepts]: Start accepts. Automaton has 199416 states and 261043 transitions. Word has length 98 [2019-09-10 06:42:30,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:42:30,871 INFO L475 AbstractCegarLoop]: Abstraction has 199416 states and 261043 transitions. [2019-09-10 06:42:30,871 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:42:30,871 INFO L276 IsEmpty]: Start isEmpty. Operand 199416 states and 261043 transitions. [2019-09-10 06:42:30,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-10 06:42:30,890 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:42:30,890 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 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] [2019-09-10 06:42:30,891 INFO L418 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:42:30,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:42:30,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1242482949, now seen corresponding path program 1 times [2019-09-10 06:42:30,891 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:42:30,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:42:30,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:42:30,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:42:30,893 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:42:30,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:42:30,945 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-09-10 06:42:30,946 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:42:30,946 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:42:30,946 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:42:30,946 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:42:30,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:42:30,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:42:30,947 INFO L87 Difference]: Start difference. First operand 199416 states and 261043 transitions. Second operand 3 states. [2019-09-10 06:42:31,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:42:31,228 INFO L93 Difference]: Finished difference Result 136130 states and 175161 transitions. [2019-09-10 06:42:31,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:42:31,229 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2019-09-10 06:42:31,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:42:31,371 INFO L225 Difference]: With dead ends: 136130 [2019-09-10 06:42:31,371 INFO L226 Difference]: Without dead ends: 136130 [2019-09-10 06:42:31,371 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 [2019-09-10 06:42:31,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136130 states. [2019-09-10 06:42:32,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136130 to 129739. [2019-09-10 06:42:32,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129739 states. [2019-09-10 06:42:32,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129739 states to 129739 states and 166923 transitions. [2019-09-10 06:42:32,819 INFO L78 Accepts]: Start accepts. Automaton has 129739 states and 166923 transitions. Word has length 103 [2019-09-10 06:42:32,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:42:32,819 INFO L475 AbstractCegarLoop]: Abstraction has 129739 states and 166923 transitions. [2019-09-10 06:42:32,819 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:42:32,819 INFO L276 IsEmpty]: Start isEmpty. Operand 129739 states and 166923 transitions. [2019-09-10 06:42:32,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-09-10 06:42:32,829 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:42:32,830 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-10 06:42:32,830 INFO L418 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:42:32,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:42:32,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1724235031, now seen corresponding path program 1 times [2019-09-10 06:42:32,830 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:42:32,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:42:32,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:42:32,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:42:32,831 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:42:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:42:32,947 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 6 proven. 64 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-10 06:42:32,947 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:42:32,947 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:42:32,947 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 105 with the following transitions: [2019-09-10 06:42:32,948 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [72], [74], [77], [88], [90], [93], [104], [106], [109], [112], [114], [117], [118], [120], [122], [127], [140], [142], [145], [148], [151], [153], [155], [193], [195], [208], [216], [235], [246], [248], [261], [269], [288], [310], [311], [315], [316], [317] [2019-09-10 06:42:32,949 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:42:32,949 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:42:32,958 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:42:33,038 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 06:42:33,038 INFO L272 AbstractInterpreter]: Visited 59 different actions 312 times. Merged at 35 different actions 215 times. Widened at 11 different actions 29 times. Performed 1117 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1117 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 30 fixpoints after 13 different actions. Largest state had 97 variables. [2019-09-10 06:42:33,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:42:33,039 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 06:42:33,039 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:42:33,039 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 06:42:33,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:42:33,061 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 06:42:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:42:33,145 INFO L256 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 18 conjunts are in the unsatisfiable core [2019-09-10 06:42:33,148 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 06:42:33,199 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:42:33,308 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 32 proven. 19 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-09-10 06:42:33,308 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 06:42:33,541 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:42:33,695 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 32 proven. 19 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-09-10 06:42:33,709 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 06:42:33,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 10] total 21 [2019-09-10 06:42:33,709 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 06:42:33,710 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-10 06:42:33,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-10 06:42:33,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2019-09-10 06:42:33,711 INFO L87 Difference]: Start difference. First operand 129739 states and 166923 transitions. Second operand 13 states. [2019-09-10 06:42:38,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:42:38,583 INFO L93 Difference]: Finished difference Result 490216 states and 623617 transitions. [2019-09-10 06:42:38,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2019-09-10 06:42:38,584 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 104 [2019-09-10 06:42:38,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:42:40,069 INFO L225 Difference]: With dead ends: 490216 [2019-09-10 06:42:40,069 INFO L226 Difference]: Without dead ends: 490216 [2019-09-10 06:42:40,070 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1803 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1309, Invalid=4543, Unknown=0, NotChecked=0, Total=5852 [2019-09-10 06:42:40,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490216 states. [2019-09-10 06:42:47,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490216 to 272425. [2019-09-10 06:42:47,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272425 states. [2019-09-10 06:42:48,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272425 states to 272425 states and 347175 transitions. [2019-09-10 06:42:48,166 INFO L78 Accepts]: Start accepts. Automaton has 272425 states and 347175 transitions. Word has length 104 [2019-09-10 06:42:48,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:42:48,166 INFO L475 AbstractCegarLoop]: Abstraction has 272425 states and 347175 transitions. [2019-09-10 06:42:48,166 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-10 06:42:48,166 INFO L276 IsEmpty]: Start isEmpty. Operand 272425 states and 347175 transitions. [2019-09-10 06:42:48,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-09-10 06:42:48,199 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:42:48,199 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-10 06:42:48,199 INFO L418 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:42:48,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:42:48,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1466348100, now seen corresponding path program 1 times [2019-09-10 06:42:48,200 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:42:48,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:42:48,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:42:48,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:42:48,201 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:42:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:42:48,247 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-10 06:42:48,247 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:42:48,247 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-10 06:42:48,247 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:42:48,248 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 06:42:48,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 06:42:48,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 06:42:48,248 INFO L87 Difference]: Start difference. First operand 272425 states and 347175 transitions. Second operand 4 states. [2019-09-10 06:42:49,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:42:49,807 INFO L93 Difference]: Finished difference Result 333942 states and 421965 transitions. [2019-09-10 06:42:49,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 06:42:49,807 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-09-10 06:42:49,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:42:50,165 INFO L225 Difference]: With dead ends: 333942 [2019-09-10 06:42:50,165 INFO L226 Difference]: Without dead ends: 333942 [2019-09-10 06:42:50,166 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-10 06:42:50,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333942 states. [2019-09-10 06:42:56,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333942 to 237904. [2019-09-10 06:42:56,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237904 states. [2019-09-10 06:42:56,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237904 states to 237904 states and 301249 transitions. [2019-09-10 06:42:56,850 INFO L78 Accepts]: Start accepts. Automaton has 237904 states and 301249 transitions. Word has length 118 [2019-09-10 06:42:56,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:42:56,851 INFO L475 AbstractCegarLoop]: Abstraction has 237904 states and 301249 transitions. [2019-09-10 06:42:56,851 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 06:42:56,851 INFO L276 IsEmpty]: Start isEmpty. Operand 237904 states and 301249 transitions. [2019-09-10 06:42:56,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-09-10 06:42:56,882 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:42:56,883 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-10 06:42:56,883 INFO L418 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:42:56,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:42:56,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1819043519, now seen corresponding path program 1 times [2019-09-10 06:42:56,883 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:42:56,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:42:56,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:42:56,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:42:56,884 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:42:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:42:57,130 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 21 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:42:57,130 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:42:57,130 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:42:57,130 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 119 with the following transitions: [2019-09-10 06:42:57,131 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [64], [67], [70], [72], [74], [77], [80], [88], [90], [93], [96], [99], [104], [106], [109], [112], [114], [117], [118], [120], [129], [131], [134], [140], [142], [145], [148], [151], [153], [155], [191], [193], [195], [208], [216], [219], [222], [225], [227], [235], [237], [240], [248], [251], [254], [257], [259], [261], [310], [311], [315], [316], [317] [2019-09-10 06:42:57,132 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:42:57,132 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:42:57,140 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:42:57,446 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 06:42:57,447 INFO L272 AbstractInterpreter]: Visited 74 different actions 831 times. Merged at 50 different actions 622 times. Widened at 21 different actions 115 times. Performed 2544 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2544 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 118 fixpoints after 22 different actions. Largest state had 99 variables. [2019-09-10 06:42:57,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:42:57,447 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 06:42:57,447 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:42:57,447 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 06:42:57,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:42:57,466 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 06:42:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:42:57,555 INFO L256 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-10 06:42:57,557 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 06:42:57,633 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:42:57,663 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:42:57,690 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:42:57,753 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:42:57,926 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 54 proven. 26 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-10 06:42:57,926 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 06:42:58,293 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:42:58,387 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:42:58,387 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:42:58,388 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:42:58,388 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:42:58,389 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:42:58,389 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:42:58,390 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:42:58,445 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 61 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-10 06:42:58,454 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 06:42:58,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2019-09-10 06:42:58,455 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 06:42:58,457 INFO L454 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-09-10 06:42:58,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-09-10 06:42:58,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=898, Unknown=0, NotChecked=0, Total=992 [2019-09-10 06:42:58,458 INFO L87 Difference]: Start difference. First operand 237904 states and 301249 transitions. Second operand 22 states. [2019-09-10 06:43:08,219 WARN L188 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2019-09-10 06:43:12,230 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 45 [2019-09-10 06:43:13,402 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 47 [2019-09-10 06:43:14,651 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 44 [2019-09-10 06:43:15,387 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 47 [2019-09-10 06:43:15,795 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 50 [2019-09-10 06:43:18,136 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 45 [2019-09-10 06:43:18,987 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 48 [2019-09-10 06:43:25,431 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 47 [2019-09-10 06:43:29,324 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 45 [2019-09-10 06:43:35,245 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 47 [2019-09-10 06:43:35,583 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 47 [2019-09-10 06:43:36,784 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 50 [2019-09-10 06:43:39,167 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 44 [2019-09-10 06:43:39,490 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 47 [2019-09-10 06:43:41,291 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2019-09-10 06:43:42,795 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 47 [2019-09-10 06:43:44,163 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 47 [2019-09-10 06:43:46,340 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 47 [2019-09-10 06:43:47,606 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2019-09-10 06:43:48,299 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2019-09-10 06:43:52,234 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2019-09-10 06:43:53,760 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2019-09-10 06:43:59,783 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 28 [2019-09-10 06:44:05,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:44:05,512 INFO L93 Difference]: Finished difference Result 946702 states and 1170129 transitions. [2019-09-10 06:44:05,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 444 states. [2019-09-10 06:44:05,512 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 118 [2019-09-10 06:44:05,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:44:06,697 INFO L225 Difference]: With dead ends: 946702 [2019-09-10 06:44:06,698 INFO L226 Difference]: Without dead ends: 946702 [2019-09-10 06:44:06,704 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 689 GetRequests, 215 SyntacticMatches, 2 SemanticMatches, 472 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98085 ImplicationChecksByTransitivity, 53.8s TimeCoverageRelationStatistics Valid=24523, Invalid=199679, Unknown=0, NotChecked=0, Total=224202 [2019-09-10 06:44:08,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946702 states. [2019-09-10 06:44:19,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946702 to 283585. [2019-09-10 06:44:19,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283585 states. [2019-09-10 06:44:20,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283585 states to 283585 states and 358962 transitions. [2019-09-10 06:44:20,681 INFO L78 Accepts]: Start accepts. Automaton has 283585 states and 358962 transitions. Word has length 118 [2019-09-10 06:44:20,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:44:20,681 INFO L475 AbstractCegarLoop]: Abstraction has 283585 states and 358962 transitions. [2019-09-10 06:44:20,682 INFO L476 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-09-10 06:44:20,682 INFO L276 IsEmpty]: Start isEmpty. Operand 283585 states and 358962 transitions. [2019-09-10 06:44:20,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-09-10 06:44:20,704 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:44:20,704 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2019-09-10 06:44:20,704 INFO L418 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:44:20,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:44:20,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1087064839, now seen corresponding path program 1 times [2019-09-10 06:44:20,705 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:44:20,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:44:20,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:44:20,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:44:20,706 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:44:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:44:20,756 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-09-10 06:44:20,757 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:44:20,757 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:44:20,757 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:44:20,759 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:44:20,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:44:20,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:44:20,759 INFO L87 Difference]: Start difference. First operand 283585 states and 358962 transitions. Second operand 3 states. [2019-09-10 06:44:21,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:44:21,244 INFO L93 Difference]: Finished difference Result 263618 states and 329684 transitions. [2019-09-10 06:44:21,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:44:21,245 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2019-09-10 06:44:21,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:44:21,537 INFO L225 Difference]: With dead ends: 263618 [2019-09-10 06:44:21,537 INFO L226 Difference]: Without dead ends: 263618 [2019-09-10 06:44:21,537 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 [2019-09-10 06:44:21,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263618 states. [2019-09-10 06:44:27,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263618 to 240668. [2019-09-10 06:44:27,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240668 states. [2019-09-10 06:44:28,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240668 states to 240668 states and 301521 transitions. [2019-09-10 06:44:28,062 INFO L78 Accepts]: Start accepts. Automaton has 240668 states and 301521 transitions. Word has length 118 [2019-09-10 06:44:28,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:44:28,063 INFO L475 AbstractCegarLoop]: Abstraction has 240668 states and 301521 transitions. [2019-09-10 06:44:28,063 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:44:28,063 INFO L276 IsEmpty]: Start isEmpty. Operand 240668 states and 301521 transitions. [2019-09-10 06:44:28,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-09-10 06:44:28,082 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:44:28,082 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-10 06:44:28,082 INFO L418 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:44:28,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:44:28,083 INFO L82 PathProgramCache]: Analyzing trace with hash 35923218, now seen corresponding path program 1 times [2019-09-10 06:44:28,083 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:44:28,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:44:28,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:44:28,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:44:28,084 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:44:28,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:44:28,124 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-09-10 06:44:28,124 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:44:28,124 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:44:28,124 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:44:28,125 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:44:28,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:44:28,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:44:28,125 INFO L87 Difference]: Start difference. First operand 240668 states and 301521 transitions. Second operand 3 states. [2019-09-10 06:44:28,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:44:28,659 INFO L93 Difference]: Finished difference Result 259220 states and 324619 transitions. [2019-09-10 06:44:28,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:44:28,660 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-09-10 06:44:28,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:44:28,920 INFO L225 Difference]: With dead ends: 259220 [2019-09-10 06:44:28,920 INFO L226 Difference]: Without dead ends: 259220 [2019-09-10 06:44:28,920 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 [2019-09-10 06:44:29,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259220 states. [2019-09-10 06:44:35,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259220 to 219161. [2019-09-10 06:44:35,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219161 states. [2019-09-10 06:44:35,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219161 states to 219161 states and 274634 transitions. [2019-09-10 06:44:35,279 INFO L78 Accepts]: Start accepts. Automaton has 219161 states and 274634 transitions. Word has length 119 [2019-09-10 06:44:35,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:44:35,280 INFO L475 AbstractCegarLoop]: Abstraction has 219161 states and 274634 transitions. [2019-09-10 06:44:35,280 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:44:35,280 INFO L276 IsEmpty]: Start isEmpty. Operand 219161 states and 274634 transitions. [2019-09-10 06:44:35,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-09-10 06:44:35,292 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:44:35,292 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-10 06:44:35,292 INFO L418 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:44:35,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:44:35,292 INFO L82 PathProgramCache]: Analyzing trace with hash 203278933, now seen corresponding path program 1 times [2019-09-10 06:44:35,293 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:44:35,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:44:35,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:44:35,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:44:35,294 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:44:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:44:35,346 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-09-10 06:44:35,346 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:44:35,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:44:35,346 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:44:35,347 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:44:35,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:44:35,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:44:35,347 INFO L87 Difference]: Start difference. First operand 219161 states and 274634 transitions. Second operand 3 states. [2019-09-10 06:44:35,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:44:35,809 INFO L93 Difference]: Finished difference Result 250117 states and 312720 transitions. [2019-09-10 06:44:35,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:44:35,809 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-09-10 06:44:35,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:44:36,057 INFO L225 Difference]: With dead ends: 250117 [2019-09-10 06:44:36,058 INFO L226 Difference]: Without dead ends: 250117 [2019-09-10 06:44:36,058 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 [2019-09-10 06:44:36,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250117 states. [2019-09-10 06:44:41,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250117 to 234558. [2019-09-10 06:44:41,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234558 states. [2019-09-10 06:44:42,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234558 states to 234558 states and 293247 transitions. [2019-09-10 06:44:42,150 INFO L78 Accepts]: Start accepts. Automaton has 234558 states and 293247 transitions. Word has length 119 [2019-09-10 06:44:42,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:44:42,150 INFO L475 AbstractCegarLoop]: Abstraction has 234558 states and 293247 transitions. [2019-09-10 06:44:42,150 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:44:42,150 INFO L276 IsEmpty]: Start isEmpty. Operand 234558 states and 293247 transitions. [2019-09-10 06:44:42,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-09-10 06:44:42,162 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:44:42,162 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-10 06:44:42,163 INFO L418 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:44:42,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:44:42,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1228447945, now seen corresponding path program 2 times [2019-09-10 06:44:42,163 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:44:42,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:44:42,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:44:42,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:44:42,164 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:44:42,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:44:42,496 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 58 proven. 23 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-10 06:44:42,496 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:44:42,496 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:44:42,497 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-10 06:44:42,497 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 06:44:42,497 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:44:42,497 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 06:44:42,508 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-10 06:44:42,508 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2019-09-10 06:44:42,618 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-09-10 06:44:42,618 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-10 06:44:42,620 INFO L256 TraceCheckSpWp]: Trace formula consists of 682 conjuncts, 24 conjunts are in the unsatisfiable core [2019-09-10 06:44:42,622 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 06:44:42,743 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:42,781 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:42,819 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:43,362 WARN L188 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 31 [2019-09-10 06:44:43,740 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-09-10 06:44:44,146 WARN L188 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2019-09-10 06:44:44,148 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-09-10 06:44:44,348 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2019-09-10 06:44:44,358 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-09-10 06:44:44,795 WARN L188 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2019-09-10 06:44:44,800 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-09-10 06:44:44,890 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 55 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-10 06:44:44,891 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 06:44:45,091 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:45,203 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:45,203 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:45,203 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:45,204 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:45,204 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:45,205 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:45,205 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:45,206 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:45,207 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:45,207 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:45,207 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:48,132 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2019-09-10 06:44:48,135 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-09-10 06:44:48,283 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-09-10 06:44:48,485 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2019-09-10 06:44:48,488 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-09-10 06:44:48,488 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:49,171 WARN L188 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2019-09-10 06:44:49,244 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 49 proven. 34 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-10 06:44:49,254 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 06:44:49,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 41 [2019-09-10 06:44:49,255 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 06:44:49,255 INFO L454 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-09-10 06:44:49,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-09-10 06:44:49,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1479, Unknown=0, NotChecked=0, Total=1640 [2019-09-10 06:44:49,255 INFO L87 Difference]: Start difference. First operand 234558 states and 293247 transitions. Second operand 28 states. [2019-09-10 06:44:49,496 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 47 [2019-09-10 06:44:51,223 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 33 [2019-09-10 06:44:52,227 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 31 [2019-09-10 06:44:52,864 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 37 [2019-09-10 06:44:53,167 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 37 [2019-09-10 06:44:53,561 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 35 [2019-09-10 06:44:53,871 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 30 [2019-09-10 06:44:54,470 WARN L188 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 16 [2019-09-10 06:44:54,700 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 33 [2019-09-10 06:44:55,271 WARN L188 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 46 [2019-09-10 06:44:55,634 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 33 [2019-09-10 06:44:55,833 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 35 [2019-09-10 06:44:56,039 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 31 [2019-09-10 06:44:56,798 WARN L188 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 42 [2019-09-10 06:44:56,997 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 37 [2019-09-10 06:44:57,302 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 37 [2019-09-10 06:44:58,021 WARN L188 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 49 [2019-09-10 06:44:58,478 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 38 [2019-09-10 06:44:59,209 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 33 [2019-09-10 06:44:59,430 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 32 [2019-09-10 06:45:00,032 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 31 [2019-09-10 06:45:00,392 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 49 [2019-09-10 06:45:00,569 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 33 [2019-09-10 06:45:01,216 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 37 [2019-09-10 06:45:01,595 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 40 [2019-09-10 06:45:01,883 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 37 [2019-09-10 06:45:02,091 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 42 [2019-09-10 06:45:02,304 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 37 [2019-09-10 06:45:02,827 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 37 [2019-09-10 06:45:03,266 WARN L188 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 49 [2019-09-10 06:45:04,419 WARN L188 SmtUtils]: Spent 794.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 41 [2019-09-10 06:45:05,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:45:05,320 INFO L93 Difference]: Finished difference Result 381231 states and 471955 transitions. [2019-09-10 06:45:05,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2019-09-10 06:45:05,320 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 119 [2019-09-10 06:45:05,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:45:05,727 INFO L225 Difference]: With dead ends: 381231 [2019-09-10 06:45:05,727 INFO L226 Difference]: Without dead ends: 381231 [2019-09-10 06:45:05,728 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 177 SyntacticMatches, 36 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4046 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=2984, Invalid=11296, Unknown=0, NotChecked=0, Total=14280 [2019-09-10 06:45:05,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381231 states. [2019-09-10 06:45:09,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381231 to 263364. [2019-09-10 06:45:09,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263364 states. [2019-09-10 06:45:10,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263364 states to 263364 states and 328712 transitions. [2019-09-10 06:45:10,177 INFO L78 Accepts]: Start accepts. Automaton has 263364 states and 328712 transitions. Word has length 119 [2019-09-10 06:45:10,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:45:10,177 INFO L475 AbstractCegarLoop]: Abstraction has 263364 states and 328712 transitions. [2019-09-10 06:45:10,177 INFO L476 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-09-10 06:45:10,177 INFO L276 IsEmpty]: Start isEmpty. Operand 263364 states and 328712 transitions. [2019-09-10 06:45:10,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-09-10 06:45:10,191 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:45:10,191 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-10 06:45:10,191 INFO L418 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:45:10,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:45:10,191 INFO L82 PathProgramCache]: Analyzing trace with hash -401017387, now seen corresponding path program 1 times [2019-09-10 06:45:10,191 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:45:10,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:10,192 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-10 06:45:10,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:10,192 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:45:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:45:10,244 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-10 06:45:10,244 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:45:10,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-10 06:45:10,245 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:45:10,245 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 06:45:10,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 06:45:10,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 06:45:10,246 INFO L87 Difference]: Start difference. First operand 263364 states and 328712 transitions. Second operand 4 states. [2019-09-10 06:45:11,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:45:11,079 INFO L93 Difference]: Finished difference Result 299993 states and 371009 transitions. [2019-09-10 06:45:11,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 06:45:11,079 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-09-10 06:45:11,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:45:15,751 INFO L225 Difference]: With dead ends: 299993 [2019-09-10 06:45:15,751 INFO L226 Difference]: Without dead ends: 299993 [2019-09-10 06:45:15,752 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-10 06:45:15,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299993 states. [2019-09-10 06:45:17,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299993 to 263280. [2019-09-10 06:45:17,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263280 states. [2019-09-10 06:45:18,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263280 states to 263280 states and 326647 transitions. [2019-09-10 06:45:18,358 INFO L78 Accepts]: Start accepts. Automaton has 263280 states and 326647 transitions. Word has length 119 [2019-09-10 06:45:18,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:45:18,358 INFO L475 AbstractCegarLoop]: Abstraction has 263280 states and 326647 transitions. [2019-09-10 06:45:18,358 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 06:45:18,358 INFO L276 IsEmpty]: Start isEmpty. Operand 263280 states and 326647 transitions. [2019-09-10 06:45:18,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-09-10 06:45:18,370 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:45:18,370 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-10 06:45:18,370 INFO L418 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:45:18,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:45:18,370 INFO L82 PathProgramCache]: Analyzing trace with hash 623417232, now seen corresponding path program 1 times [2019-09-10 06:45:18,370 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:45:18,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:18,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:45:18,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:18,372 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:45:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:45:18,764 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 21 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:45:18,764 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:45:18,764 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:45:18,764 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 120 with the following transitions: [2019-09-10 06:45:18,765 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [64], [67], [72], [74], [77], [80], [88], [90], [93], [96], [99], [104], [106], [109], [112], [114], [117], [118], [120], [129], [131], [134], [140], [142], [145], [148], [151], [153], [155], [191], [193], [195], [208], [216], [219], [222], [225], [227], [235], [237], [240], [242], [248], [251], [254], [257], [259], [261], [310], [311], [315], [316], [317] [2019-09-10 06:45:18,766 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:45:18,766 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:45:18,772 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:45:18,983 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 06:45:18,983 INFO L272 AbstractInterpreter]: Visited 74 different actions 835 times. Merged at 50 different actions 630 times. Widened at 19 different actions 121 times. Performed 2515 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2515 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 113 fixpoints after 23 different actions. Largest state had 99 variables. [2019-09-10 06:45:18,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:45:18,983 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 06:45:18,983 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:45:18,983 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 06:45:18,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:45:18,995 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 06:45:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:45:19,090 INFO L256 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-10 06:45:19,092 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 06:45:19,191 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:19,226 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:19,298 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:19,394 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:19,395 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:19,395 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:19,515 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:19,572 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:19,672 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 54 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-10 06:45:19,672 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 06:45:19,757 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:20,016 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:20,091 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:20,091 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:20,092 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:20,118 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 61 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-10 06:45:20,128 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 06:45:20,128 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 12] total 38 [2019-09-10 06:45:20,129 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 06:45:20,129 INFO L454 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-09-10 06:45:20,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-09-10 06:45:20,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1297, Unknown=0, NotChecked=0, Total=1406 [2019-09-10 06:45:20,129 INFO L87 Difference]: Start difference. First operand 263280 states and 326647 transitions. Second operand 28 states. [2019-09-10 06:45:21,167 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2019-09-10 06:45:21,454 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2019-09-10 06:45:21,685 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2019-09-10 06:45:22,062 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2019-09-10 06:45:24,617 WARN L188 SmtUtils]: Spent 2.45 s on a formula simplification. DAG size of input: 67 DAG size of output: 51 [2019-09-10 06:45:24,857 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 67 [2019-09-10 06:45:25,089 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2019-09-10 06:45:25,351 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2019-09-10 06:45:25,603 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2019-09-10 06:45:25,847 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 61 [2019-09-10 06:45:26,174 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2019-09-10 06:45:26,470 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 61 [2019-09-10 06:45:26,767 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2019-09-10 06:45:26,995 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2019-09-10 06:45:27,275 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2019-09-10 06:45:27,533 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2019-09-10 06:45:27,740 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 60 [2019-09-10 06:45:28,069 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 64 [2019-09-10 06:45:28,292 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 48 [2019-09-10 06:45:28,591 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2019-09-10 06:45:28,897 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2019-09-10 06:45:29,171 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2019-09-10 06:45:29,529 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 64 [2019-09-10 06:45:29,750 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 60 [2019-09-10 06:45:29,947 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 48 [2019-09-10 06:45:30,818 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2019-09-10 06:45:31,138 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2019-09-10 06:45:31,787 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-09-10 06:45:32,101 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2019-09-10 06:45:32,305 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2019-09-10 06:45:32,570 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-09-10 06:45:32,830 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 59 [2019-09-10 06:45:33,042 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 59 [2019-09-10 06:45:33,286 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2019-09-10 06:45:33,447 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 44 [2019-09-10 06:45:33,720 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2019-09-10 06:45:34,101 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2019-09-10 06:45:34,367 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2019-09-10 06:45:34,580 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2019-09-10 06:45:34,781 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2019-09-10 06:45:35,053 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 67 [2019-09-10 06:45:35,392 WARN L188 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 70 [2019-09-10 06:45:35,602 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 57 [2019-09-10 06:45:35,835 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 45 [2019-09-10 06:45:36,053 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2019-09-10 06:45:36,279 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2019-09-10 06:45:36,629 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-09-10 06:45:36,879 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63 [2019-09-10 06:45:37,080 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2019-09-10 06:45:37,272 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 47 [2019-09-10 06:45:37,448 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 52 [2019-09-10 06:45:37,622 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 52 [2019-09-10 06:45:37,779 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2019-09-10 06:45:38,171 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63 [2019-09-10 06:45:38,435 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2019-09-10 06:45:38,629 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 47 [2019-09-10 06:45:38,820 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2019-09-10 06:45:39,046 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2019-09-10 06:45:39,339 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2019-09-10 06:45:39,590 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2019-09-10 06:45:39,780 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 50 [2019-09-10 06:45:40,015 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2019-09-10 06:45:40,202 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 47 [2019-09-10 06:45:40,382 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 50 [2019-09-10 06:45:40,597 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2019-09-10 06:45:41,039 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2019-09-10 06:45:41,256 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 56 [2019-09-10 06:45:41,439 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 50 [2019-09-10 06:45:41,667 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2019-09-10 06:45:41,914 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2019-09-10 06:45:42,147 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2019-09-10 06:45:42,381 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 49 [2019-09-10 06:45:42,640 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2019-09-10 06:45:42,884 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2019-09-10 06:45:43,130 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2019-09-10 06:45:43,374 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 56 [2019-09-10 06:45:43,657 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2019-09-10 06:45:43,903 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2019-09-10 06:45:44,087 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48 [2019-09-10 06:45:44,311 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 49 [2019-09-10 06:45:44,602 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2019-09-10 06:45:44,860 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 67 [2019-09-10 06:45:45,050 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 43 [2019-09-10 06:45:45,258 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 46 [2019-09-10 06:45:45,500 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2019-09-10 06:45:45,798 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2019-09-10 06:45:46,081 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2019-09-10 06:45:46,327 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 64 [2019-09-10 06:45:46,481 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 45 [2019-09-10 06:45:46,732 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 64 [2019-09-10 06:45:46,973 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 50 [2019-09-10 06:45:47,200 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 49 [2019-09-10 06:45:47,357 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2019-09-10 06:45:47,571 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-09-10 06:45:47,818 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 46 [2019-09-10 06:45:48,048 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 37 [2019-09-10 06:45:48,206 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 40 [2019-09-10 06:45:48,445 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2019-09-10 06:45:48,785 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 58 [2019-09-10 06:45:49,032 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 61 [2019-09-10 06:45:49,337 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2019-09-10 06:45:49,658 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2019-09-10 06:45:49,841 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2019-09-10 06:45:50,094 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2019-09-10 06:45:50,327 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2019-09-10 06:45:50,707 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2019-09-10 06:45:51,027 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2019-09-10 06:45:51,224 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2019-09-10 06:45:51,439 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 52 [2019-09-10 06:45:51,644 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-09-10 06:45:53,704 WARN L188 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 89 DAG size of output: 70 [2019-09-10 06:45:53,915 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 46 [2019-09-10 06:45:54,143 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 49 [2019-09-10 06:45:54,445 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55