/usr/bin/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 23:15:38,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 23:15:38,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 23:15:38,492 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 23:15:38,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 23:15:38,506 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 23:15:38,507 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 23:15:38,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 23:15:38,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 23:15:38,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 23:15:38,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 23:15:38,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 23:15:38,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 23:15:38,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 23:15:38,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 23:15:38,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 23:15:38,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 23:15:38,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 23:15:38,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 23:15:38,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 23:15:38,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 23:15:38,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 23:15:38,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 23:15:38,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 23:15:38,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 23:15:38,568 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 23:15:38,568 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 23:15:38,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 23:15:38,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 23:15:38,577 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 23:15:38,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 23:15:38,579 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 23:15:38,581 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 23:15:38,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 23:15:38,584 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 23:15:38,584 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 23:15:38,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 23:15:38,586 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 23:15:38,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 23:15:38,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 23:15:38,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 23:15:38,591 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 23:15:38,615 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 23:15:38,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 23:15:38,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 23:15:38,620 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 23:15:38,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 23:15:38,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 23:15:38,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 23:15:38,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 23:15:38,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 23:15:38,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 23:15:38,623 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 23:15:38,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 23:15:38,624 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 23:15:38,624 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 23:15:38,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 23:15:38,625 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 23:15:38,625 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 23:15:38,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 23:15:38,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 23:15:38,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 23:15:38,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 23:15:38,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 23:15:38,627 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-09-04 23:15:39,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 23:15:39,156 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 23:15:39,161 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 23:15:39,164 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 23:15:39,164 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 23:15:39,166 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2020-09-04 23:15:39,263 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f91f51ad/1155958a7daa48d2af5e5f1aa08bb736/FLAGe6d69d9b2 [2020-09-04 23:15:39,952 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 23:15:39,953 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2020-09-04 23:15:39,967 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f91f51ad/1155958a7daa48d2af5e5f1aa08bb736/FLAGe6d69d9b2 [2020-09-04 23:15:40,213 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f91f51ad/1155958a7daa48d2af5e5f1aa08bb736 [2020-09-04 23:15:40,228 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 23:15:40,231 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 23:15:40,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 23:15:40,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 23:15:40,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 23:15:40,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:15:40" (1/1) ... [2020-09-04 23:15:40,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59f61d05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:40, skipping insertion in model container [2020-09-04 23:15:40,244 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:15:40" (1/1) ... [2020-09-04 23:15:40,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 23:15:40,307 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 23:15:40,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:15:40,811 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 23:15:41,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:15:41,090 INFO L208 MainTranslator]: Completed translation [2020-09-04 23:15:41,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:41 WrapperNode [2020-09-04 23:15:41,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 23:15:41,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 23:15:41,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 23:15:41,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 23:15:41,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:41" (1/1) ... [2020-09-04 23:15:41,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:41" (1/1) ... [2020-09-04 23:15:41,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:41" (1/1) ... [2020-09-04 23:15:41,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:41" (1/1) ... [2020-09-04 23:15:41,199 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:41" (1/1) ... [2020-09-04 23:15:41,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:41" (1/1) ... [2020-09-04 23:15:41,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:41" (1/1) ... [2020-09-04 23:15:41,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 23:15:41,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 23:15:41,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 23:15:41,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 23:15:41,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 23:15:41,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 23:15:41,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 23:15:41,346 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 23:15:41,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 23:15:41,347 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2020-09-04 23:15:41,347 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-09-04 23:15:41,347 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 23:15:41,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 23:15:41,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 23:15:41,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 23:15:41,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 23:15:41,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 23:15:41,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 23:15:41,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 23:15:41,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 23:15:41,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 23:15:41,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 23:15:43,117 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 23:15:43,118 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 23:15:43,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:15:43 BoogieIcfgContainer [2020-09-04 23:15:43,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 23:15:43,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 23:15:43,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 23:15:43,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 23:15:43,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 11:15:40" (1/3) ... [2020-09-04 23:15:43,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5091e5fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:15:43, skipping insertion in model container [2020-09-04 23:15:43,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:41" (2/3) ... [2020-09-04 23:15:43,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5091e5fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:15:43, skipping insertion in model container [2020-09-04 23:15:43,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:15:43" (3/3) ... [2020-09-04 23:15:43,142 INFO L109 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lhb-reducer.c [2020-09-04 23:15:43,155 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 23:15:43,169 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 23:15:43,194 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 23:15:43,223 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 23:15:43,223 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 23:15:43,223 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 23:15:43,223 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 23:15:43,224 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 23:15:43,224 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 23:15:43,224 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 23:15:43,224 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 23:15:43,255 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states. [2020-09-04 23:15:43,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2020-09-04 23:15:43,299 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:43,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:43,301 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:43,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:43,312 INFO L82 PathProgramCache]: Analyzing trace with hash -378957588, now seen corresponding path program 1 times [2020-09-04 23:15:43,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:43,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254313016] [2020-09-04 23:15:43,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:43,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:44,958 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 23:15:44,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:45,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:15:45,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254313016] [2020-09-04 23:15:45,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:15:45,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 23:15:45,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521040318] [2020-09-04 23:15:45,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 23:15:45,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:45,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 23:15:45,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-09-04 23:15:45,560 INFO L87 Difference]: Start difference. First operand 726 states. Second operand 14 states. [2020-09-04 23:15:45,956 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-04 23:15:49,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:49,247 INFO L93 Difference]: Finished difference Result 806 states and 850 transitions. [2020-09-04 23:15:49,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 23:15:49,250 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 488 [2020-09-04 23:15:49,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:49,301 INFO L225 Difference]: With dead ends: 806 [2020-09-04 23:15:49,302 INFO L226 Difference]: Without dead ends: 532 [2020-09-04 23:15:49,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2020-09-04 23:15:49,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-09-04 23:15:49,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 512. [2020-09-04 23:15:49,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2020-09-04 23:15:49,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 512 transitions. [2020-09-04 23:15:49,452 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 512 transitions. Word has length 488 [2020-09-04 23:15:49,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:49,454 INFO L479 AbstractCegarLoop]: Abstraction has 512 states and 512 transitions. [2020-09-04 23:15:49,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 23:15:49,455 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 512 transitions. [2020-09-04 23:15:49,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2020-09-04 23:15:49,469 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:49,469 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:49,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 23:15:49,470 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:49,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:49,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1127244588, now seen corresponding path program 1 times [2020-09-04 23:15:49,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:49,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414851463] [2020-09-04 23:15:49,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:50,288 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 23:15:50,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:50,547 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:15:50,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414851463] [2020-09-04 23:15:50,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:15:50,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-04 23:15:50,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881530278] [2020-09-04 23:15:50,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-04 23:15:50,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:50,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-04 23:15:50,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-04 23:15:50,553 INFO L87 Difference]: Start difference. First operand 512 states and 512 transitions. Second operand 15 states. [2020-09-04 23:15:50,804 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-04 23:15:53,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:53,487 INFO L93 Difference]: Finished difference Result 563 states and 563 transitions. [2020-09-04 23:15:53,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-04 23:15:53,488 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 511 [2020-09-04 23:15:53,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:53,493 INFO L225 Difference]: With dead ends: 563 [2020-09-04 23:15:53,493 INFO L226 Difference]: Without dead ends: 555 [2020-09-04 23:15:53,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2020-09-04 23:15:53,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-04 23:15:53,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 535. [2020-09-04 23:15:53,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 535 states. [2020-09-04 23:15:53,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 535 transitions. [2020-09-04 23:15:53,553 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 535 transitions. Word has length 511 [2020-09-04 23:15:53,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:53,554 INFO L479 AbstractCegarLoop]: Abstraction has 535 states and 535 transitions. [2020-09-04 23:15:53,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-04 23:15:53,555 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 535 transitions. [2020-09-04 23:15:53,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2020-09-04 23:15:53,559 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:53,560 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:53,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 23:15:53,561 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:53,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:53,561 INFO L82 PathProgramCache]: Analyzing trace with hash -382293012, now seen corresponding path program 2 times [2020-09-04 23:15:53,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:53,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785119451] [2020-09-04 23:15:53,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:53,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:54,276 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 23:15:54,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:54,554 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:15:54,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785119451] [2020-09-04 23:15:54,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:15:54,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-04 23:15:54,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370127124] [2020-09-04 23:15:54,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-04 23:15:54,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:54,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-04 23:15:54,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-09-04 23:15:54,559 INFO L87 Difference]: Start difference. First operand 535 states and 535 transitions. Second operand 16 states. [2020-09-04 23:15:54,863 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-04 23:15:57,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:57,710 INFO L93 Difference]: Finished difference Result 586 states and 586 transitions. [2020-09-04 23:15:57,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-04 23:15:57,715 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 534 [2020-09-04 23:15:57,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:57,720 INFO L225 Difference]: With dead ends: 586 [2020-09-04 23:15:57,720 INFO L226 Difference]: Without dead ends: 578 [2020-09-04 23:15:57,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2020-09-04 23:15:57,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-04 23:15:57,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 558. [2020-09-04 23:15:57,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 558 states. [2020-09-04 23:15:57,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 558 transitions. [2020-09-04 23:15:57,776 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 558 transitions. Word has length 534 [2020-09-04 23:15:57,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:57,777 INFO L479 AbstractCegarLoop]: Abstraction has 558 states and 558 transitions. [2020-09-04 23:15:57,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-04 23:15:57,778 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 558 transitions. [2020-09-04 23:15:57,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2020-09-04 23:15:57,782 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:57,783 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:57,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 23:15:57,784 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:57,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:57,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1886659028, now seen corresponding path program 3 times [2020-09-04 23:15:57,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:57,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651349975] [2020-09-04 23:15:57,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:57,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:58,571 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 23:15:58,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:58,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:59,034 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:15:59,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651349975] [2020-09-04 23:15:59,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:15:59,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-04 23:15:59,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918668004] [2020-09-04 23:15:59,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-04 23:15:59,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:59,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-04 23:15:59,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-09-04 23:15:59,040 INFO L87 Difference]: Start difference. First operand 558 states and 558 transitions. Second operand 17 states. [2020-09-04 23:15:59,310 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-04 23:16:02,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:16:02,347 INFO L93 Difference]: Finished difference Result 609 states and 609 transitions. [2020-09-04 23:16:02,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-04 23:16:02,348 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 557 [2020-09-04 23:16:02,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:16:02,354 INFO L225 Difference]: With dead ends: 609 [2020-09-04 23:16:02,355 INFO L226 Difference]: Without dead ends: 601 [2020-09-04 23:16:02,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=87, Invalid=843, Unknown=0, NotChecked=0, Total=930 [2020-09-04 23:16:02,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-09-04 23:16:02,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 581. [2020-09-04 23:16:02,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2020-09-04 23:16:02,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 581 transitions. [2020-09-04 23:16:02,405 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 581 transitions. Word has length 557 [2020-09-04 23:16:02,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:16:02,406 INFO L479 AbstractCegarLoop]: Abstraction has 581 states and 581 transitions. [2020-09-04 23:16:02,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-04 23:16:02,407 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 581 transitions. [2020-09-04 23:16:02,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2020-09-04 23:16:02,412 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:16:02,412 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:16:02,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 23:16:02,413 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:16:02,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:16:02,414 INFO L82 PathProgramCache]: Analyzing trace with hash 743212780, now seen corresponding path program 4 times [2020-09-04 23:16:02,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:16:02,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770108365] [2020-09-04 23:16:02,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:16:02,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:03,245 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 23:16:03,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:16:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:03,564 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:16:03,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770108365] [2020-09-04 23:16:03,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:16:03,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-04 23:16:03,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476212407] [2020-09-04 23:16:03,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-04 23:16:03,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:16:03,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-04 23:16:03,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-09-04 23:16:03,568 INFO L87 Difference]: Start difference. First operand 581 states and 581 transitions. Second operand 18 states. [2020-09-04 23:16:03,826 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-04 23:16:07,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:16:07,202 INFO L93 Difference]: Finished difference Result 632 states and 632 transitions. [2020-09-04 23:16:07,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-04 23:16:07,203 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 580 [2020-09-04 23:16:07,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:16:07,208 INFO L225 Difference]: With dead ends: 632 [2020-09-04 23:16:07,208 INFO L226 Difference]: Without dead ends: 624 [2020-09-04 23:16:07,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=93, Invalid=963, Unknown=0, NotChecked=0, Total=1056 [2020-09-04 23:16:07,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2020-09-04 23:16:07,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 604. [2020-09-04 23:16:07,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 604 states. [2020-09-04 23:16:07,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 604 transitions. [2020-09-04 23:16:07,260 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 604 transitions. Word has length 580 [2020-09-04 23:16:07,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:16:07,262 INFO L479 AbstractCegarLoop]: Abstraction has 604 states and 604 transitions. [2020-09-04 23:16:07,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-04 23:16:07,262 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 604 transitions. [2020-09-04 23:16:07,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2020-09-04 23:16:07,268 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:16:07,268 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:16:07,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 23:16:07,269 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:16:07,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:16:07,270 INFO L82 PathProgramCache]: Analyzing trace with hash -621287724, now seen corresponding path program 5 times [2020-09-04 23:16:07,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:16:07,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405345945] [2020-09-04 23:16:07,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:16:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:08,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:16:08,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:08,547 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 270 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:16:08,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405345945] [2020-09-04 23:16:08,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:16:08,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-04 23:16:08,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484456556] [2020-09-04 23:16:08,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-04 23:16:08,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:16:08,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-04 23:16:08,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-09-04 23:16:08,555 INFO L87 Difference]: Start difference. First operand 604 states and 604 transitions. Second operand 19 states. [2020-09-04 23:16:08,815 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-04 23:16:12,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:16:12,424 INFO L93 Difference]: Finished difference Result 655 states and 655 transitions. [2020-09-04 23:16:12,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-04 23:16:12,426 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 603 [2020-09-04 23:16:12,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:16:12,432 INFO L225 Difference]: With dead ends: 655 [2020-09-04 23:16:12,432 INFO L226 Difference]: Without dead ends: 647 [2020-09-04 23:16:12,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=99, Invalid=1091, Unknown=0, NotChecked=0, Total=1190 [2020-09-04 23:16:12,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2020-09-04 23:16:12,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 627. [2020-09-04 23:16:12,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 627 states. [2020-09-04 23:16:12,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 627 transitions. [2020-09-04 23:16:12,487 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 627 transitions. Word has length 603 [2020-09-04 23:16:12,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:16:12,489 INFO L479 AbstractCegarLoop]: Abstraction has 627 states and 627 transitions. [2020-09-04 23:16:12,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-04 23:16:12,489 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 627 transitions. [2020-09-04 23:16:12,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2020-09-04 23:16:12,495 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:16:12,496 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:16:12,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 23:16:12,497 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:16:12,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:16:12,498 INFO L82 PathProgramCache]: Analyzing trace with hash -782556692, now seen corresponding path program 6 times [2020-09-04 23:16:12,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:16:12,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [883337046] [2020-09-04 23:16:12,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:16:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:13,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:16:13,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:13,883 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 0 proven. 393 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:16:13,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [883337046] [2020-09-04 23:16:13,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:16:13,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-04 23:16:13,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958217292] [2020-09-04 23:16:13,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-04 23:16:13,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:16:13,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-04 23:16:13,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-09-04 23:16:13,888 INFO L87 Difference]: Start difference. First operand 627 states and 627 transitions. Second operand 20 states. [2020-09-04 23:16:14,149 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-04 23:16:17,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:16:17,961 INFO L93 Difference]: Finished difference Result 678 states and 678 transitions. [2020-09-04 23:16:17,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-04 23:16:17,962 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 626 [2020-09-04 23:16:17,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:16:17,968 INFO L225 Difference]: With dead ends: 678 [2020-09-04 23:16:17,968 INFO L226 Difference]: Without dead ends: 670 [2020-09-04 23:16:17,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=105, Invalid=1227, Unknown=0, NotChecked=0, Total=1332 [2020-09-04 23:16:17,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-09-04 23:16:18,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 650. [2020-09-04 23:16:18,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 650 states. [2020-09-04 23:16:18,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 650 transitions. [2020-09-04 23:16:18,021 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 650 transitions. Word has length 626 [2020-09-04 23:16:18,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:16:18,022 INFO L479 AbstractCegarLoop]: Abstraction has 650 states and 650 transitions. [2020-09-04 23:16:18,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-04 23:16:18,022 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 650 transitions. [2020-09-04 23:16:18,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2020-09-04 23:16:18,027 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:16:18,028 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:16:18,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 23:16:18,028 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:16:18,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:16:18,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1470819284, now seen corresponding path program 7 times [2020-09-04 23:16:18,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:16:18,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338337610] [2020-09-04 23:16:18,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:16:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:19,013 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 23:16:19,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:16:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:19,545 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 0 proven. 539 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:16:19,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338337610] [2020-09-04 23:16:19,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:16:19,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-04 23:16:19,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746285752] [2020-09-04 23:16:19,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-04 23:16:19,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:16:19,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-04 23:16:19,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-09-04 23:16:19,549 INFO L87 Difference]: Start difference. First operand 650 states and 650 transitions. Second operand 21 states. [2020-09-04 23:16:19,808 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-04 23:16:23,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:16:23,950 INFO L93 Difference]: Finished difference Result 701 states and 701 transitions. [2020-09-04 23:16:23,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-04 23:16:23,951 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 649 [2020-09-04 23:16:23,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:16:23,956 INFO L225 Difference]: With dead ends: 701 [2020-09-04 23:16:23,956 INFO L226 Difference]: Without dead ends: 693 [2020-09-04 23:16:23,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=111, Invalid=1371, Unknown=0, NotChecked=0, Total=1482 [2020-09-04 23:16:23,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2020-09-04 23:16:24,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 673. [2020-09-04 23:16:24,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2020-09-04 23:16:24,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 673 transitions. [2020-09-04 23:16:24,042 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 673 transitions. Word has length 649 [2020-09-04 23:16:24,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:16:24,043 INFO L479 AbstractCegarLoop]: Abstraction has 673 states and 673 transitions. [2020-09-04 23:16:24,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-04 23:16:24,043 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 673 transitions. [2020-09-04 23:16:24,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2020-09-04 23:16:24,049 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:16:24,050 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:16:24,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 23:16:24,051 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:16:24,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:16:24,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1022198548, now seen corresponding path program 8 times [2020-09-04 23:16:24,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:16:24,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341952745] [2020-09-04 23:16:24,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:16:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:25,073 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 23:16:25,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:16:25,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:25,772 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:16:25,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341952745] [2020-09-04 23:16:25,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:16:25,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-04 23:16:25,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105822130] [2020-09-04 23:16:25,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-04 23:16:25,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:16:25,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-04 23:16:25,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-09-04 23:16:25,777 INFO L87 Difference]: Start difference. First operand 673 states and 673 transitions. Second operand 22 states. [2020-09-04 23:16:26,053 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-04 23:16:30,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:16:30,539 INFO L93 Difference]: Finished difference Result 724 states and 724 transitions. [2020-09-04 23:16:30,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-04 23:16:30,540 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 672 [2020-09-04 23:16:30,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:16:30,544 INFO L225 Difference]: With dead ends: 724 [2020-09-04 23:16:30,545 INFO L226 Difference]: Without dead ends: 716 [2020-09-04 23:16:30,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=117, Invalid=1523, Unknown=0, NotChecked=0, Total=1640 [2020-09-04 23:16:30,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2020-09-04 23:16:30,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 696. [2020-09-04 23:16:30,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-09-04 23:16:30,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 696 transitions. [2020-09-04 23:16:30,605 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 696 transitions. Word has length 672 [2020-09-04 23:16:30,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:16:30,606 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 696 transitions. [2020-09-04 23:16:30,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-04 23:16:30,606 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 696 transitions. [2020-09-04 23:16:30,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2020-09-04 23:16:30,613 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:16:30,614 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:16:30,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 23:16:30,614 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:16:30,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:16:30,615 INFO L82 PathProgramCache]: Analyzing trace with hash -170053420, now seen corresponding path program 9 times [2020-09-04 23:16:30,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:16:30,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052376923] [2020-09-04 23:16:30,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:16:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:31,767 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 23:16:31,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:16:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:32,268 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:16:32,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052376923] [2020-09-04 23:16:32,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:16:32,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-04 23:16:32,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776912704] [2020-09-04 23:16:32,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-04 23:16:32,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:16:32,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-04 23:16:32,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-09-04 23:16:32,271 INFO L87 Difference]: Start difference. First operand 696 states and 696 transitions. Second operand 23 states. [2020-09-04 23:16:32,558 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-04 23:16:37,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:16:37,522 INFO L93 Difference]: Finished difference Result 747 states and 747 transitions. [2020-09-04 23:16:37,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-04 23:16:37,523 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 695 [2020-09-04 23:16:37,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:16:37,528 INFO L225 Difference]: With dead ends: 747 [2020-09-04 23:16:37,528 INFO L226 Difference]: Without dead ends: 739 [2020-09-04 23:16:37,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=123, Invalid=1683, Unknown=0, NotChecked=0, Total=1806 [2020-09-04 23:16:37,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2020-09-04 23:16:37,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 719. [2020-09-04 23:16:37,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 719 states. [2020-09-04 23:16:37,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 719 transitions. [2020-09-04 23:16:37,593 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 719 transitions. Word has length 695 [2020-09-04 23:16:37,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:16:37,594 INFO L479 AbstractCegarLoop]: Abstraction has 719 states and 719 transitions. [2020-09-04 23:16:37,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-04 23:16:37,594 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 719 transitions. [2020-09-04 23:16:37,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 719 [2020-09-04 23:16:37,601 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:16:37,602 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:16:37,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 23:16:37,602 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:16:37,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:16:37,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1205692436, now seen corresponding path program 10 times [2020-09-04 23:16:37,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:16:37,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485255180] [2020-09-04 23:16:37,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:16:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:38,842 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 23:16:38,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:16:38,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:39,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 0 proven. 1115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:16:39,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485255180] [2020-09-04 23:16:39,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:16:39,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-09-04 23:16:39,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462400139] [2020-09-04 23:16:39,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-04 23:16:39,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:16:39,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-04 23:16:39,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2020-09-04 23:16:39,406 INFO L87 Difference]: Start difference. First operand 719 states and 719 transitions. Second operand 24 states. [2020-09-04 23:16:39,691 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-04 23:16:45,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:16:45,029 INFO L93 Difference]: Finished difference Result 770 states and 770 transitions. [2020-09-04 23:16:45,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-04 23:16:45,031 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 718 [2020-09-04 23:16:45,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:16:45,035 INFO L225 Difference]: With dead ends: 770 [2020-09-04 23:16:45,035 INFO L226 Difference]: Without dead ends: 762 [2020-09-04 23:16:45,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=129, Invalid=1851, Unknown=0, NotChecked=0, Total=1980 [2020-09-04 23:16:45,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2020-09-04 23:16:45,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 742. [2020-09-04 23:16:45,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 742 states. [2020-09-04 23:16:45,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 742 transitions. [2020-09-04 23:16:45,103 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 742 transitions. Word has length 718 [2020-09-04 23:16:45,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:16:45,103 INFO L479 AbstractCegarLoop]: Abstraction has 742 states and 742 transitions. [2020-09-04 23:16:45,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-04 23:16:45,104 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 742 transitions. [2020-09-04 23:16:45,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 742 [2020-09-04 23:16:45,110 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:16:45,111 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:16:45,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 23:16:45,111 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:16:45,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:16:45,112 INFO L82 PathProgramCache]: Analyzing trace with hash 2027861460, now seen corresponding path program 11 times [2020-09-04 23:16:45,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:16:45,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071297002] [2020-09-04 23:16:45,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:16:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:46,574 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 23:16:46,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:16:46,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:47,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1353 backedges. 0 proven. 1353 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:16:47,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071297002] [2020-09-04 23:16:47,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:16:47,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-04 23:16:47,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333300607] [2020-09-04 23:16:47,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-04 23:16:47,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:16:47,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-04 23:16:47,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-09-04 23:16:47,640 INFO L87 Difference]: Start difference. First operand 742 states and 742 transitions. Second operand 25 states. [2020-09-04 23:16:47,925 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-04 23:16:53,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:16:53,702 INFO L93 Difference]: Finished difference Result 793 states and 793 transitions. [2020-09-04 23:16:53,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-04 23:16:53,703 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 741 [2020-09-04 23:16:53,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:16:53,708 INFO L225 Difference]: With dead ends: 793 [2020-09-04 23:16:53,708 INFO L226 Difference]: Without dead ends: 785 [2020-09-04 23:16:53,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=135, Invalid=2027, Unknown=0, NotChecked=0, Total=2162 [2020-09-04 23:16:53,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-09-04 23:16:53,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 765. [2020-09-04 23:16:53,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 765 states. [2020-09-04 23:16:53,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 765 transitions. [2020-09-04 23:16:53,779 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 765 transitions. Word has length 741 [2020-09-04 23:16:53,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:16:53,781 INFO L479 AbstractCegarLoop]: Abstraction has 765 states and 765 transitions. [2020-09-04 23:16:53,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-04 23:16:53,781 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 765 transitions. [2020-09-04 23:16:53,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 765 [2020-09-04 23:16:53,788 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:16:53,789 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:16:53,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-04 23:16:53,790 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:16:53,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:16:53,790 INFO L82 PathProgramCache]: Analyzing trace with hash 859534060, now seen corresponding path program 12 times [2020-09-04 23:16:53,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:16:53,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570320173] [2020-09-04 23:16:53,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:16:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:55,126 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 23:16:55,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:16:55,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:55,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1614 backedges. 0 proven. 1614 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:16:55,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570320173] [2020-09-04 23:16:55,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:16:55,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-09-04 23:16:55,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439391280] [2020-09-04 23:16:55,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-09-04 23:16:55,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:16:55,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-09-04 23:16:55,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2020-09-04 23:16:55,698 INFO L87 Difference]: Start difference. First operand 765 states and 765 transitions. Second operand 26 states. [2020-09-04 23:16:55,988 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-04 23:17:02,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:17:02,286 INFO L93 Difference]: Finished difference Result 816 states and 816 transitions. [2020-09-04 23:17:02,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-04 23:17:02,287 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 764 [2020-09-04 23:17:02,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:17:02,291 INFO L225 Difference]: With dead ends: 816 [2020-09-04 23:17:02,291 INFO L226 Difference]: Without dead ends: 808 [2020-09-04 23:17:02,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=141, Invalid=2211, Unknown=0, NotChecked=0, Total=2352 [2020-09-04 23:17:02,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2020-09-04 23:17:02,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 788. [2020-09-04 23:17:02,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 788 states. [2020-09-04 23:17:02,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 788 transitions. [2020-09-04 23:17:02,366 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 788 transitions. Word has length 764 [2020-09-04 23:17:02,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:17:02,367 INFO L479 AbstractCegarLoop]: Abstraction has 788 states and 788 transitions. [2020-09-04 23:17:02,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-09-04 23:17:02,367 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 788 transitions. [2020-09-04 23:17:02,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 788 [2020-09-04 23:17:02,375 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:17:02,376 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:17:02,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-04 23:17:02,376 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:17:02,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:17:02,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1476360916, now seen corresponding path program 13 times [2020-09-04 23:17:02,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:17:02,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120468665] [2020-09-04 23:17:02,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:17:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:03,805 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 23:17:03,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:17:03,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:04,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1898 backedges. 0 proven. 1898 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:17:04,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120468665] [2020-09-04 23:17:04,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:17:04,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-04 23:17:04,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046080197] [2020-09-04 23:17:04,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-04 23:17:04,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:17:04,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-04 23:17:04,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-09-04 23:17:04,374 INFO L87 Difference]: Start difference. First operand 788 states and 788 transitions. Second operand 27 states. [2020-09-04 23:17:04,652 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-04 23:17:11,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:17:11,600 INFO L93 Difference]: Finished difference Result 839 states and 839 transitions. [2020-09-04 23:17:11,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-04 23:17:11,602 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 787 [2020-09-04 23:17:11,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:17:11,606 INFO L225 Difference]: With dead ends: 839 [2020-09-04 23:17:11,606 INFO L226 Difference]: Without dead ends: 831 [2020-09-04 23:17:11,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=147, Invalid=2403, Unknown=0, NotChecked=0, Total=2550 [2020-09-04 23:17:11,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2020-09-04 23:17:11,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 811. [2020-09-04 23:17:11,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 811 states. [2020-09-04 23:17:11,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 811 transitions. [2020-09-04 23:17:11,683 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 811 transitions. Word has length 787 [2020-09-04 23:17:11,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:17:11,684 INFO L479 AbstractCegarLoop]: Abstraction has 811 states and 811 transitions. [2020-09-04 23:17:11,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-04 23:17:11,685 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 811 transitions. [2020-09-04 23:17:11,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 811 [2020-09-04 23:17:11,693 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:17:11,693 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:17:11,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-04 23:17:11,694 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:17:11,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:17:11,695 INFO L82 PathProgramCache]: Analyzing trace with hash -2096296468, now seen corresponding path program 14 times [2020-09-04 23:17:11,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:17:11,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565183162] [2020-09-04 23:17:11,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:17:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:13,220 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 23:17:13,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:17:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:13,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:17:13,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565183162] [2020-09-04 23:17:13,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:17:13,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-09-04 23:17:13,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687698142] [2020-09-04 23:17:13,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-09-04 23:17:13,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:17:13,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-09-04 23:17:13,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2020-09-04 23:17:13,823 INFO L87 Difference]: Start difference. First operand 811 states and 811 transitions. Second operand 28 states. [2020-09-04 23:17:14,138 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-04 23:17:21,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:17:21,747 INFO L93 Difference]: Finished difference Result 862 states and 862 transitions. [2020-09-04 23:17:21,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-04 23:17:21,753 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 810 [2020-09-04 23:17:21,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:17:21,757 INFO L225 Difference]: With dead ends: 862 [2020-09-04 23:17:21,758 INFO L226 Difference]: Without dead ends: 854 [2020-09-04 23:17:21,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=153, Invalid=2603, Unknown=0, NotChecked=0, Total=2756 [2020-09-04 23:17:21,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2020-09-04 23:17:21,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 834. [2020-09-04 23:17:21,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 834 states. [2020-09-04 23:17:21,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 834 transitions. [2020-09-04 23:17:21,848 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 834 transitions. Word has length 810 [2020-09-04 23:17:21,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:17:21,849 INFO L479 AbstractCegarLoop]: Abstraction has 834 states and 834 transitions. [2020-09-04 23:17:21,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-09-04 23:17:21,850 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 834 transitions. [2020-09-04 23:17:21,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 834 [2020-09-04 23:17:21,860 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:17:21,861 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:17:21,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-04 23:17:21,862 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:17:21,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:17:21,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1097891884, now seen corresponding path program 15 times [2020-09-04 23:17:21,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:17:21,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932825632] [2020-09-04 23:17:21,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:17:22,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:23,416 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 23:17:23,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:17:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2535 backedges. 0 proven. 2535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:17:24,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932825632] [2020-09-04 23:17:24,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:17:24,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-09-04 23:17:24,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314576318] [2020-09-04 23:17:24,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-04 23:17:24,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:17:24,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-04 23:17:24,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2020-09-04 23:17:24,056 INFO L87 Difference]: Start difference. First operand 834 states and 834 transitions. Second operand 29 states. [2020-09-04 23:17:24,317 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-04 23:17:32,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:17:32,364 INFO L93 Difference]: Finished difference Result 885 states and 885 transitions. [2020-09-04 23:17:32,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-04 23:17:32,366 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 833 [2020-09-04 23:17:32,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:17:32,370 INFO L225 Difference]: With dead ends: 885 [2020-09-04 23:17:32,370 INFO L226 Difference]: Without dead ends: 877 [2020-09-04 23:17:32,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=159, Invalid=2811, Unknown=0, NotChecked=0, Total=2970 [2020-09-04 23:17:32,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2020-09-04 23:17:32,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 857. [2020-09-04 23:17:32,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 857 states. [2020-09-04 23:17:32,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 857 transitions. [2020-09-04 23:17:32,455 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 857 transitions. Word has length 833 [2020-09-04 23:17:32,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:17:32,457 INFO L479 AbstractCegarLoop]: Abstraction has 857 states and 857 transitions. [2020-09-04 23:17:32,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-04 23:17:32,457 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 857 transitions. [2020-09-04 23:17:32,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 857 [2020-09-04 23:17:32,468 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:17:32,469 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:17:32,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-04 23:17:32,469 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:17:32,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:17:32,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1035507476, now seen corresponding path program 16 times [2020-09-04 23:17:32,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:17:32,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140912596] [2020-09-04 23:17:32,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:17:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:34,157 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 23:17:34,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:17:34,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:34,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2888 backedges. 0 proven. 2888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:17:34,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140912596] [2020-09-04 23:17:34,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:17:34,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-09-04 23:17:34,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303385383] [2020-09-04 23:17:34,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-09-04 23:17:34,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:17:34,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-09-04 23:17:34,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2020-09-04 23:17:34,866 INFO L87 Difference]: Start difference. First operand 857 states and 857 transitions. Second operand 30 states. [2020-09-04 23:17:35,185 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-04 23:17:43,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:17:43,962 INFO L93 Difference]: Finished difference Result 908 states and 908 transitions. [2020-09-04 23:17:43,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-04 23:17:43,963 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 856 [2020-09-04 23:17:43,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:17:43,967 INFO L225 Difference]: With dead ends: 908 [2020-09-04 23:17:43,968 INFO L226 Difference]: Without dead ends: 900 [2020-09-04 23:17:43,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=165, Invalid=3027, Unknown=0, NotChecked=0, Total=3192 [2020-09-04 23:17:43,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2020-09-04 23:17:44,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 880. [2020-09-04 23:17:44,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2020-09-04 23:17:44,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 880 transitions. [2020-09-04 23:17:44,048 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 880 transitions. Word has length 856 [2020-09-04 23:17:44,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:17:44,049 INFO L479 AbstractCegarLoop]: Abstraction has 880 states and 880 transitions. [2020-09-04 23:17:44,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-09-04 23:17:44,049 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 880 transitions. [2020-09-04 23:17:44,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 880 [2020-09-04 23:17:44,059 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:17:44,059 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:17:44,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-04 23:17:44,060 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:17:44,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:17:44,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1948334892, now seen corresponding path program 17 times [2020-09-04 23:17:44,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:17:44,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872427877] [2020-09-04 23:17:44,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:17:44,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:45,786 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 23:17:45,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:17:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:46,493 INFO L134 CoverageAnalysis]: Checked inductivity of 3264 backedges. 0 proven. 3264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:17:46,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872427877] [2020-09-04 23:17:46,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:17:46,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-09-04 23:17:46,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714606115] [2020-09-04 23:17:46,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-09-04 23:17:46,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:17:46,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-09-04 23:17:46,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2020-09-04 23:17:46,496 INFO L87 Difference]: Start difference. First operand 880 states and 880 transitions. Second operand 31 states. [2020-09-04 23:17:46,828 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-04 23:17:56,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:17:56,480 INFO L93 Difference]: Finished difference Result 931 states and 931 transitions. [2020-09-04 23:17:56,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-04 23:17:56,482 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 879 [2020-09-04 23:17:56,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:17:56,487 INFO L225 Difference]: With dead ends: 931 [2020-09-04 23:17:56,487 INFO L226 Difference]: Without dead ends: 923 [2020-09-04 23:17:56,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=171, Invalid=3251, Unknown=0, NotChecked=0, Total=3422 [2020-09-04 23:17:56,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2020-09-04 23:17:56,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 903. [2020-09-04 23:17:56,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 903 states. [2020-09-04 23:17:56,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 903 transitions. [2020-09-04 23:17:56,547 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 903 transitions. Word has length 879 [2020-09-04 23:17:56,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:17:56,548 INFO L479 AbstractCegarLoop]: Abstraction has 903 states and 903 transitions. [2020-09-04 23:17:56,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-09-04 23:17:56,549 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 903 transitions. [2020-09-04 23:17:56,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 903 [2020-09-04 23:17:56,559 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:17:56,559 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:17:56,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-04 23:17:56,560 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:17:56,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:17:56,561 INFO L82 PathProgramCache]: Analyzing trace with hash -677739540, now seen corresponding path program 18 times [2020-09-04 23:17:56,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:17:56,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977788564] [2020-09-04 23:17:56,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:17:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:58,567 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 23:17:58,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:17:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:59,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3663 backedges. 0 proven. 3663 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:17:59,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977788564] [2020-09-04 23:17:59,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:17:59,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-09-04 23:17:59,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905686115] [2020-09-04 23:17:59,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-09-04 23:17:59,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:17:59,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-09-04 23:17:59,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2020-09-04 23:17:59,317 INFO L87 Difference]: Start difference. First operand 903 states and 903 transitions. Second operand 32 states. [2020-09-04 23:17:59,662 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-04 23:18:10,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:18:10,450 INFO L93 Difference]: Finished difference Result 954 states and 954 transitions. [2020-09-04 23:18:10,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-04 23:18:10,451 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 902 [2020-09-04 23:18:10,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:18:10,455 INFO L225 Difference]: With dead ends: 954 [2020-09-04 23:18:10,455 INFO L226 Difference]: Without dead ends: 946 [2020-09-04 23:18:10,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=177, Invalid=3483, Unknown=0, NotChecked=0, Total=3660 [2020-09-04 23:18:10,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2020-09-04 23:18:10,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 926. [2020-09-04 23:18:10,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-09-04 23:18:10,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 926 transitions. [2020-09-04 23:18:10,518 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 926 transitions. Word has length 902 [2020-09-04 23:18:10,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:18:10,519 INFO L479 AbstractCegarLoop]: Abstraction has 926 states and 926 transitions. [2020-09-04 23:18:10,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-09-04 23:18:10,519 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 926 transitions. [2020-09-04 23:18:10,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 926 [2020-09-04 23:18:10,530 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:18:10,530 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:18:10,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-04 23:18:10,531 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:18:10,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:18:10,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1396525524, now seen corresponding path program 19 times [2020-09-04 23:18:10,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:18:10,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944917953] [2020-09-04 23:18:10,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:18:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:12,488 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 23:18:12,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:18:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:13,323 INFO L134 CoverageAnalysis]: Checked inductivity of 4085 backedges. 0 proven. 4085 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:18:13,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944917953] [2020-09-04 23:18:13,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:18:13,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-09-04 23:18:13,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286640935] [2020-09-04 23:18:13,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-09-04 23:18:13,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:18:13,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-09-04 23:18:13,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=993, Unknown=0, NotChecked=0, Total=1056 [2020-09-04 23:18:13,327 INFO L87 Difference]: Start difference. First operand 926 states and 926 transitions. Second operand 33 states. [2020-09-04 23:18:13,689 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-04 23:18:24,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:18:24,973 INFO L93 Difference]: Finished difference Result 977 states and 977 transitions. [2020-09-04 23:18:24,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-04 23:18:24,977 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 925 [2020-09-04 23:18:24,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:18:24,982 INFO L225 Difference]: With dead ends: 977 [2020-09-04 23:18:24,982 INFO L226 Difference]: Without dead ends: 969 [2020-09-04 23:18:24,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=183, Invalid=3723, Unknown=0, NotChecked=0, Total=3906 [2020-09-04 23:18:24,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2020-09-04 23:18:25,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 949. [2020-09-04 23:18:25,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 949 states. [2020-09-04 23:18:25,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 949 transitions. [2020-09-04 23:18:25,046 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 949 transitions. Word has length 925 [2020-09-04 23:18:25,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:18:25,047 INFO L479 AbstractCegarLoop]: Abstraction has 949 states and 949 transitions. [2020-09-04 23:18:25,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-09-04 23:18:25,047 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 949 transitions. [2020-09-04 23:18:25,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 949 [2020-09-04 23:18:25,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:18:25,058 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:18:25,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-04 23:18:25,058 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:18:25,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:18:25,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1974886124, now seen corresponding path program 20 times [2020-09-04 23:18:25,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:18:25,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273391457] [2020-09-04 23:18:25,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:18:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:27,227 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 23:18:27,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:18:27,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:28,058 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 0 proven. 4530 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:18:28,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273391457] [2020-09-04 23:18:28,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:18:28,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-09-04 23:18:28,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595768849] [2020-09-04 23:18:28,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-09-04 23:18:28,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:18:28,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-09-04 23:18:28,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2020-09-04 23:18:28,061 INFO L87 Difference]: Start difference. First operand 949 states and 949 transitions. Second operand 34 states. [2020-09-04 23:18:28,423 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-04 23:18:40,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:18:40,622 INFO L93 Difference]: Finished difference Result 1000 states and 1000 transitions. [2020-09-04 23:18:40,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-04 23:18:40,623 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 948 [2020-09-04 23:18:40,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:18:40,626 INFO L225 Difference]: With dead ends: 1000 [2020-09-04 23:18:40,626 INFO L226 Difference]: Without dead ends: 992 [2020-09-04 23:18:40,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=189, Invalid=3971, Unknown=0, NotChecked=0, Total=4160 [2020-09-04 23:18:40,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2020-09-04 23:18:40,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 972. [2020-09-04 23:18:40,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 972 states. [2020-09-04 23:18:40,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 972 transitions. [2020-09-04 23:18:40,690 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 972 transitions. Word has length 948 [2020-09-04 23:18:40,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:18:40,691 INFO L479 AbstractCegarLoop]: Abstraction has 972 states and 972 transitions. [2020-09-04 23:18:40,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-09-04 23:18:40,691 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 972 transitions. [2020-09-04 23:18:40,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 972 [2020-09-04 23:18:40,699 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:18:40,699 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:18:40,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-04 23:18:40,700 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:18:40,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:18:40,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1543179988, now seen corresponding path program 21 times [2020-09-04 23:18:40,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:18:40,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20374874] [2020-09-04 23:18:40,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:18:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:42,954 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 23:18:42,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:18:42,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:43,854 INFO L134 CoverageAnalysis]: Checked inductivity of 4998 backedges. 0 proven. 4998 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:18:43,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20374874] [2020-09-04 23:18:43,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:18:43,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-09-04 23:18:43,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745271020] [2020-09-04 23:18:43,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-09-04 23:18:43,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:18:43,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-09-04 23:18:43,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=1123, Unknown=0, NotChecked=0, Total=1190 [2020-09-04 23:18:43,857 INFO L87 Difference]: Start difference. First operand 972 states and 972 transitions. Second operand 35 states. [2020-09-04 23:18:44,241 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-04 23:18:58,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:18:58,282 INFO L93 Difference]: Finished difference Result 1023 states and 1023 transitions. [2020-09-04 23:18:58,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-04 23:18:58,286 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 971 [2020-09-04 23:18:58,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:18:58,291 INFO L225 Difference]: With dead ends: 1023 [2020-09-04 23:18:58,291 INFO L226 Difference]: Without dead ends: 1015 [2020-09-04 23:18:58,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=195, Invalid=4227, Unknown=0, NotChecked=0, Total=4422 [2020-09-04 23:18:58,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-09-04 23:18:58,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 995. [2020-09-04 23:18:58,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-09-04 23:18:58,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 995 transitions. [2020-09-04 23:18:58,369 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 995 transitions. Word has length 971 [2020-09-04 23:18:58,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:18:58,370 INFO L479 AbstractCegarLoop]: Abstraction has 995 states and 995 transitions. [2020-09-04 23:18:58,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-09-04 23:18:58,370 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 995 transitions. [2020-09-04 23:18:58,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 995 [2020-09-04 23:18:58,377 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:18:58,378 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:18:58,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-04 23:18:58,378 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:18:58,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:18:58,379 INFO L82 PathProgramCache]: Analyzing trace with hash 457898476, now seen corresponding path program 22 times [2020-09-04 23:18:58,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:18:58,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575334509] [2020-09-04 23:18:58,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:18:58,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:00,832 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 23:19:00,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:19:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:01,839 INFO L134 CoverageAnalysis]: Checked inductivity of 5489 backedges. 0 proven. 5489 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:19:01,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575334509] [2020-09-04 23:19:01,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:19:01,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-09-04 23:19:01,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137003634] [2020-09-04 23:19:01,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-09-04 23:19:01,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:19:01,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-09-04 23:19:01,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2020-09-04 23:19:01,843 INFO L87 Difference]: Start difference. First operand 995 states and 995 transitions. Second operand 36 states. [2020-09-04 23:19:02,241 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-04 23:19:17,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:19:17,203 INFO L93 Difference]: Finished difference Result 1046 states and 1046 transitions. [2020-09-04 23:19:17,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-09-04 23:19:17,205 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 994 [2020-09-04 23:19:17,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:19:17,210 INFO L225 Difference]: With dead ends: 1046 [2020-09-04 23:19:17,211 INFO L226 Difference]: Without dead ends: 1038 [2020-09-04 23:19:17,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=201, Invalid=4491, Unknown=0, NotChecked=0, Total=4692 [2020-09-04 23:19:17,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2020-09-04 23:19:17,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1018. [2020-09-04 23:19:17,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1018 states. [2020-09-04 23:19:17,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1018 transitions. [2020-09-04 23:19:17,321 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1018 transitions. Word has length 994 [2020-09-04 23:19:17,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:19:17,322 INFO L479 AbstractCegarLoop]: Abstraction has 1018 states and 1018 transitions. [2020-09-04 23:19:17,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-09-04 23:19:17,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1018 transitions. [2020-09-04 23:19:17,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1018 [2020-09-04 23:19:17,330 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:19:17,331 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:19:17,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-04 23:19:17,331 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:19:17,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:19:17,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1587014700, now seen corresponding path program 23 times [2020-09-04 23:19:17,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:19:17,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076303917] [2020-09-04 23:19:17,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:19:17,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:19,993 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 23:19:19,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:19:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,019 INFO L134 CoverageAnalysis]: Checked inductivity of 6003 backedges. 0 proven. 6003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:19:21,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076303917] [2020-09-04 23:19:21,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:19:21,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-09-04 23:19:21,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189886839] [2020-09-04 23:19:21,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-09-04 23:19:21,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:19:21,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-09-04 23:19:21,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=1261, Unknown=0, NotChecked=0, Total=1332 [2020-09-04 23:19:21,022 INFO L87 Difference]: Start difference. First operand 1018 states and 1018 transitions. Second operand 37 states. [2020-09-04 23:19:21,449 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-04 23:19:37,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:19:37,767 INFO L93 Difference]: Finished difference Result 1069 states and 1069 transitions. [2020-09-04 23:19:37,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-09-04 23:19:37,769 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 1017 [2020-09-04 23:19:37,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:19:37,774 INFO L225 Difference]: With dead ends: 1069 [2020-09-04 23:19:37,775 INFO L226 Difference]: Without dead ends: 1061 [2020-09-04 23:19:37,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=207, Invalid=4763, Unknown=0, NotChecked=0, Total=4970 [2020-09-04 23:19:37,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2020-09-04 23:19:37,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 1041. [2020-09-04 23:19:37,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1041 states. [2020-09-04 23:19:37,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1041 transitions. [2020-09-04 23:19:37,858 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1041 transitions. Word has length 1017 [2020-09-04 23:19:37,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:19:37,859 INFO L479 AbstractCegarLoop]: Abstraction has 1041 states and 1041 transitions. [2020-09-04 23:19:37,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-09-04 23:19:37,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1041 transitions. [2020-09-04 23:19:37,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1041 [2020-09-04 23:19:37,868 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:19:37,868 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:19:37,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-04 23:19:37,869 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:19:37,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:19:37,870 INFO L82 PathProgramCache]: Analyzing trace with hash 319313132, now seen corresponding path program 24 times [2020-09-04 23:19:37,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:19:37,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713605379] [2020-09-04 23:19:37,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:19:38,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,617 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 23:19:40,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:19:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:41,751 INFO L134 CoverageAnalysis]: Checked inductivity of 6540 backedges. 0 proven. 6540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:19:41,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713605379] [2020-09-04 23:19:41,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:19:41,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-09-04 23:19:41,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824727856] [2020-09-04 23:19:41,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-09-04 23:19:41,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:19:41,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-09-04 23:19:41,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=1333, Unknown=0, NotChecked=0, Total=1406 [2020-09-04 23:19:41,754 INFO L87 Difference]: Start difference. First operand 1041 states and 1041 transitions. Second operand 38 states. [2020-09-04 23:19:42,181 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-04 23:20:00,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:20:00,925 INFO L93 Difference]: Finished difference Result 1092 states and 1092 transitions. [2020-09-04 23:20:00,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-04 23:20:00,927 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 1040 [2020-09-04 23:20:00,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:20:00,934 INFO L225 Difference]: With dead ends: 1092 [2020-09-04 23:20:00,934 INFO L226 Difference]: Without dead ends: 1084 [2020-09-04 23:20:00,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=213, Invalid=5043, Unknown=0, NotChecked=0, Total=5256 [2020-09-04 23:20:00,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2020-09-04 23:20:01,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 1064. [2020-09-04 23:20:01,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1064 states. [2020-09-04 23:20:01,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1064 transitions. [2020-09-04 23:20:01,078 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1064 transitions. Word has length 1040 [2020-09-04 23:20:01,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:20:01,079 INFO L479 AbstractCegarLoop]: Abstraction has 1064 states and 1064 transitions. [2020-09-04 23:20:01,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-09-04 23:20:01,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1064 transitions. [2020-09-04 23:20:01,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1064 [2020-09-04 23:20:01,089 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:20:01,089 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:20:01,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-09-04 23:20:01,089 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:20:01,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:20:01,090 INFO L82 PathProgramCache]: Analyzing trace with hash -757835564, now seen corresponding path program 25 times [2020-09-04 23:20:01,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:20:01,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307958269] [2020-09-04 23:20:01,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:20:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:04,229 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 23:20:04,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:20:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:05,377 INFO L134 CoverageAnalysis]: Checked inductivity of 7100 backedges. 0 proven. 7100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:20:05,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307958269] [2020-09-04 23:20:05,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:20:05,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-09-04 23:20:05,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178964059] [2020-09-04 23:20:05,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-09-04 23:20:05,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:20:05,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-09-04 23:20:05,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=1407, Unknown=0, NotChecked=0, Total=1482 [2020-09-04 23:20:05,380 INFO L87 Difference]: Start difference. First operand 1064 states and 1064 transitions. Second operand 39 states. [2020-09-04 23:20:05,871 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-04 23:20:26,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:20:26,741 INFO L93 Difference]: Finished difference Result 1115 states and 1115 transitions. [2020-09-04 23:20:26,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-09-04 23:20:26,744 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 1063 [2020-09-04 23:20:26,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:20:26,749 INFO L225 Difference]: With dead ends: 1115 [2020-09-04 23:20:26,750 INFO L226 Difference]: Without dead ends: 1107 [2020-09-04 23:20:26,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=219, Invalid=5331, Unknown=0, NotChecked=0, Total=5550 [2020-09-04 23:20:26,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2020-09-04 23:20:26,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1087. [2020-09-04 23:20:26,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1087 states. [2020-09-04 23:20:26,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1087 transitions. [2020-09-04 23:20:26,835 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1087 transitions. Word has length 1063 [2020-09-04 23:20:26,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:20:26,836 INFO L479 AbstractCegarLoop]: Abstraction has 1087 states and 1087 transitions. [2020-09-04 23:20:26,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-09-04 23:20:26,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1087 transitions. [2020-09-04 23:20:26,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1087 [2020-09-04 23:20:26,846 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:20:26,846 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 27, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:20:26,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-09-04 23:20:26,847 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:20:26,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:20:26,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1939763180, now seen corresponding path program 26 times [2020-09-04 23:20:26,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:20:26,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047256265] [2020-09-04 23:20:26,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:20:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:30,228 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 23:20:30,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:20:30,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:31,436 INFO L134 CoverageAnalysis]: Checked inductivity of 7683 backedges. 0 proven. 7683 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:20:31,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047256265] [2020-09-04 23:20:31,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:20:31,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-09-04 23:20:31,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231467099] [2020-09-04 23:20:31,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-09-04 23:20:31,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:20:31,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-09-04 23:20:31,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1483, Unknown=0, NotChecked=0, Total=1560 [2020-09-04 23:20:31,440 INFO L87 Difference]: Start difference. First operand 1087 states and 1087 transitions. Second operand 40 states. [2020-09-04 23:20:31,923 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-04 23:20:54,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:20:54,667 INFO L93 Difference]: Finished difference Result 1138 states and 1138 transitions. [2020-09-04 23:20:54,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-09-04 23:20:54,669 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 1086 [2020-09-04 23:20:54,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:20:54,676 INFO L225 Difference]: With dead ends: 1138 [2020-09-04 23:20:54,676 INFO L226 Difference]: Without dead ends: 1130 [2020-09-04 23:20:54,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=225, Invalid=5627, Unknown=0, NotChecked=0, Total=5852 [2020-09-04 23:20:54,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1130 states. [2020-09-04 23:20:54,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1130 to 1110. [2020-09-04 23:20:54,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1110 states. [2020-09-04 23:20:54,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1110 transitions. [2020-09-04 23:20:54,768 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1110 transitions. Word has length 1086 [2020-09-04 23:20:54,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:20:54,770 INFO L479 AbstractCegarLoop]: Abstraction has 1110 states and 1110 transitions. [2020-09-04 23:20:54,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-09-04 23:20:54,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1110 transitions. [2020-09-04 23:20:54,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1110 [2020-09-04 23:20:54,787 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:20:54,788 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:20:54,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-09-04 23:20:54,789 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:20:54,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:20:54,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1401937364, now seen corresponding path program 27 times [2020-09-04 23:20:54,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:20:54,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682147280] [2020-09-04 23:20:54,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:20:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:58,642 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 23:20:58,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:20:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:59,865 INFO L134 CoverageAnalysis]: Checked inductivity of 8289 backedges. 0 proven. 8289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:20:59,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682147280] [2020-09-04 23:20:59,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:20:59,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-09-04 23:20:59,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993217069] [2020-09-04 23:20:59,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-09-04 23:20:59,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:20:59,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-09-04 23:20:59,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1561, Unknown=0, NotChecked=0, Total=1640 [2020-09-04 23:20:59,870 INFO L87 Difference]: Start difference. First operand 1110 states and 1110 transitions. Second operand 41 states. [2020-09-04 23:21:00,427 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-04 23:21:27,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:21:27,019 INFO L93 Difference]: Finished difference Result 1161 states and 1161 transitions. [2020-09-04 23:21:27,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-09-04 23:21:27,022 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 1109 [2020-09-04 23:21:27,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:21:27,027 INFO L225 Difference]: With dead ends: 1161 [2020-09-04 23:21:27,028 INFO L226 Difference]: Without dead ends: 1153 [2020-09-04 23:21:27,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=231, Invalid=5931, Unknown=0, NotChecked=0, Total=6162 [2020-09-04 23:21:27,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2020-09-04 23:21:27,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 1133. [2020-09-04 23:21:27,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1133 states. [2020-09-04 23:21:27,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1133 transitions. [2020-09-04 23:21:27,124 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1133 transitions. Word has length 1109 [2020-09-04 23:21:27,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:21:27,126 INFO L479 AbstractCegarLoop]: Abstraction has 1133 states and 1133 transitions. [2020-09-04 23:21:27,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-09-04 23:21:27,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1133 transitions. [2020-09-04 23:21:27,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1133 [2020-09-04 23:21:27,145 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:21:27,146 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 29, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:21:27,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-09-04 23:21:27,147 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:21:27,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:21:27,147 INFO L82 PathProgramCache]: Analyzing trace with hash 532499180, now seen corresponding path program 28 times [2020-09-04 23:21:27,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:21:27,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270655561] [2020-09-04 23:21:27,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:21:27,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:31,513 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 23:21:31,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:21:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:32,850 INFO L134 CoverageAnalysis]: Checked inductivity of 8918 backedges. 0 proven. 8918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:21:32,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270655561] [2020-09-04 23:21:32,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:21:32,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-09-04 23:21:32,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530393364] [2020-09-04 23:21:32,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-09-04 23:21:32,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:21:32,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-09-04 23:21:32,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1641, Unknown=0, NotChecked=0, Total=1722 [2020-09-04 23:21:32,854 INFO L87 Difference]: Start difference. First operand 1133 states and 1133 transitions. Second operand 42 states. [2020-09-04 23:21:33,457 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-04 23:21:59,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:21:59,897 INFO L93 Difference]: Finished difference Result 1184 states and 1184 transitions. [2020-09-04 23:21:59,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-09-04 23:21:59,899 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 1132 [2020-09-04 23:21:59,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:21:59,904 INFO L225 Difference]: With dead ends: 1184 [2020-09-04 23:21:59,905 INFO L226 Difference]: Without dead ends: 1176 [2020-09-04 23:21:59,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=237, Invalid=6243, Unknown=0, NotChecked=0, Total=6480 [2020-09-04 23:21:59,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2020-09-04 23:21:59,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1156. [2020-09-04 23:21:59,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1156 states. [2020-09-04 23:21:59,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1156 transitions. [2020-09-04 23:21:59,998 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1156 transitions. Word has length 1132 [2020-09-04 23:21:59,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:21:59,998 INFO L479 AbstractCegarLoop]: Abstraction has 1156 states and 1156 transitions. [2020-09-04 23:21:59,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-09-04 23:21:59,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1156 transitions. [2020-09-04 23:22:00,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1156 [2020-09-04 23:22:00,008 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:22:00,008 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 30, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:22:00,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-09-04 23:22:00,009 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:22:00,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:22:00,009 INFO L82 PathProgramCache]: Analyzing trace with hash 988455636, now seen corresponding path program 29 times [2020-09-04 23:22:00,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:22:00,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084359367] [2020-09-04 23:22:00,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:22:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,291 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 23:22:03,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:22:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:04,609 INFO L134 CoverageAnalysis]: Checked inductivity of 9570 backedges. 0 proven. 9570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:22:04,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084359367] [2020-09-04 23:22:04,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:22:04,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-09-04 23:22:04,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522131843] [2020-09-04 23:22:04,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-09-04 23:22:04,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:22:04,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-09-04 23:22:04,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1723, Unknown=0, NotChecked=0, Total=1806 [2020-09-04 23:22:04,612 INFO L87 Difference]: Start difference. First operand 1156 states and 1156 transitions. Second operand 43 states. [2020-09-04 23:22:05,020 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-04 23:22:25,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:22:25,215 INFO L93 Difference]: Finished difference Result 1207 states and 1207 transitions. [2020-09-04 23:22:25,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-09-04 23:22:25,217 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 1155 [2020-09-04 23:22:25,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:22:25,224 INFO L225 Difference]: With dead ends: 1207 [2020-09-04 23:22:25,224 INFO L226 Difference]: Without dead ends: 1199 [2020-09-04 23:22:25,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=243, Invalid=6563, Unknown=0, NotChecked=0, Total=6806 [2020-09-04 23:22:25,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2020-09-04 23:22:25,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1179. [2020-09-04 23:22:25,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1179 states. [2020-09-04 23:22:25,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1179 transitions. [2020-09-04 23:22:25,319 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1179 transitions. Word has length 1155 [2020-09-04 23:22:25,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:22:25,319 INFO L479 AbstractCegarLoop]: Abstraction has 1179 states and 1179 transitions. [2020-09-04 23:22:25,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-09-04 23:22:25,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1179 transitions. [2020-09-04 23:22:25,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1179 [2020-09-04 23:22:25,329 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:22:25,330 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:22:25,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-09-04 23:22:25,331 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:22:25,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:22:25,331 INFO L82 PathProgramCache]: Analyzing trace with hash -971708948, now seen corresponding path program 30 times [2020-09-04 23:22:25,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:22:25,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130008943] [2020-09-04 23:22:25,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:22:25,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:28,577 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 23:22:28,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:22:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:30,036 INFO L134 CoverageAnalysis]: Checked inductivity of 10245 backedges. 0 proven. 10245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:22:30,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130008943] [2020-09-04 23:22:30,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:22:30,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-09-04 23:22:30,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561898963] [2020-09-04 23:22:30,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-09-04 23:22:30,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:22:30,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-09-04 23:22:30,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1807, Unknown=0, NotChecked=0, Total=1892 [2020-09-04 23:22:30,038 INFO L87 Difference]: Start difference. First operand 1179 states and 1179 transitions. Second operand 44 states. [2020-09-04 23:22:30,495 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-04 23:22:53,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:22:53,436 INFO L93 Difference]: Finished difference Result 1230 states and 1230 transitions. [2020-09-04 23:22:53,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-09-04 23:22:53,439 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 1178 [2020-09-04 23:22:53,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:22:53,446 INFO L225 Difference]: With dead ends: 1230 [2020-09-04 23:22:53,446 INFO L226 Difference]: Without dead ends: 1222 [2020-09-04 23:22:53,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=249, Invalid=6891, Unknown=0, NotChecked=0, Total=7140 [2020-09-04 23:22:53,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2020-09-04 23:22:53,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1202. [2020-09-04 23:22:53,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1202 states. [2020-09-04 23:22:53,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1202 transitions. [2020-09-04 23:22:53,623 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1202 transitions. Word has length 1178 [2020-09-04 23:22:53,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:22:53,624 INFO L479 AbstractCegarLoop]: Abstraction has 1202 states and 1202 transitions. [2020-09-04 23:22:53,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-09-04 23:22:53,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1202 transitions. [2020-09-04 23:22:53,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1202 [2020-09-04 23:22:53,644 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:22:53,646 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:22:53,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-09-04 23:22:53,646 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:22:53,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:22:53,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1412736980, now seen corresponding path program 31 times [2020-09-04 23:22:53,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:22:53,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263569634] [2020-09-04 23:22:53,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:22:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:57,581 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 23:22:57,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:22:57,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:58,992 INFO L134 CoverageAnalysis]: Checked inductivity of 10943 backedges. 0 proven. 10943 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:22:58,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263569634] [2020-09-04 23:22:58,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:22:58,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-09-04 23:22:58,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317240274] [2020-09-04 23:22:58,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-09-04 23:22:58,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:22:58,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-09-04 23:22:58,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1893, Unknown=0, NotChecked=0, Total=1980 [2020-09-04 23:22:58,996 INFO L87 Difference]: Start difference. First operand 1202 states and 1202 transitions. Second operand 45 states. [2020-09-04 23:22:59,439 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-04 23:23:20,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:23:20,240 INFO L93 Difference]: Finished difference Result 1253 states and 1253 transitions. [2020-09-04 23:23:20,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-09-04 23:23:20,242 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 1201 [2020-09-04 23:23:20,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:23:20,247 INFO L225 Difference]: With dead ends: 1253 [2020-09-04 23:23:20,247 INFO L226 Difference]: Without dead ends: 1245 [2020-09-04 23:23:20,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=255, Invalid=7227, Unknown=0, NotChecked=0, Total=7482 [2020-09-04 23:23:20,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2020-09-04 23:23:20,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1225. [2020-09-04 23:23:20,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1225 states. [2020-09-04 23:23:20,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1225 transitions. [2020-09-04 23:23:20,373 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1225 transitions. Word has length 1201 [2020-09-04 23:23:20,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:23:20,373 INFO L479 AbstractCegarLoop]: Abstraction has 1225 states and 1225 transitions. [2020-09-04 23:23:20,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-09-04 23:23:20,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1225 transitions. [2020-09-04 23:23:20,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1225 [2020-09-04 23:23:20,383 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:23:20,383 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 33, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:23:20,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-09-04 23:23:20,383 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:23:20,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:23:20,384 INFO L82 PathProgramCache]: Analyzing trace with hash -514506516, now seen corresponding path program 32 times [2020-09-04 23:23:20,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:23:20,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781976669] [2020-09-04 23:23:20,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:23:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,575 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 23:23:23,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:23:23,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:25,134 INFO L134 CoverageAnalysis]: Checked inductivity of 11664 backedges. 0 proven. 11664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:23:25,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781976669] [2020-09-04 23:23:25,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:23:25,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-09-04 23:23:25,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584458727] [2020-09-04 23:23:25,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-09-04 23:23:25,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:23:25,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-09-04 23:23:25,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1981, Unknown=0, NotChecked=0, Total=2070 [2020-09-04 23:23:25,137 INFO L87 Difference]: Start difference. First operand 1225 states and 1225 transitions. Second operand 46 states. [2020-09-04 23:23:25,538 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-04 23:23:50,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:23:50,130 INFO L93 Difference]: Finished difference Result 1276 states and 1276 transitions. [2020-09-04 23:23:50,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-09-04 23:23:50,132 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 1224 [2020-09-04 23:23:50,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:23:50,139 INFO L225 Difference]: With dead ends: 1276 [2020-09-04 23:23:50,140 INFO L226 Difference]: Without dead ends: 1268 [2020-09-04 23:23:50,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=261, Invalid=7571, Unknown=0, NotChecked=0, Total=7832 [2020-09-04 23:23:50,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2020-09-04 23:23:50,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1248. [2020-09-04 23:23:50,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1248 states. [2020-09-04 23:23:50,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1248 transitions. [2020-09-04 23:23:50,256 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1248 transitions. Word has length 1224 [2020-09-04 23:23:50,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:23:50,258 INFO L479 AbstractCegarLoop]: Abstraction has 1248 states and 1248 transitions. [2020-09-04 23:23:50,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-09-04 23:23:50,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1248 transitions. [2020-09-04 23:23:50,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1248 [2020-09-04 23:23:50,273 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:23:50,273 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 34, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:23:50,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-09-04 23:23:50,274 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:23:50,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:23:50,274 INFO L82 PathProgramCache]: Analyzing trace with hash 515763412, now seen corresponding path program 33 times [2020-09-04 23:23:50,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:23:50,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777912807] [2020-09-04 23:23:50,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:23:51,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:57,265 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-04 23:23:57,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:23:57,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:00,869 INFO L134 CoverageAnalysis]: Checked inductivity of 12408 backedges. 456 proven. 11952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:24:00,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777912807] [2020-09-04 23:24:00,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:24:00,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-09-04 23:24:00,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704571482] [2020-09-04 23:24:00,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-09-04 23:24:00,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:24:00,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-09-04 23:24:00,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=2308, Unknown=0, NotChecked=0, Total=2450 [2020-09-04 23:24:00,871 INFO L87 Difference]: Start difference. First operand 1248 states and 1248 transitions. Second operand 50 states. [2020-09-04 23:24:22,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:24:22,650 INFO L93 Difference]: Finished difference Result 1257 states and 1257 transitions. [2020-09-04 23:24:22,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-09-04 23:24:22,650 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 1247 [2020-09-04 23:24:22,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:24:22,652 INFO L225 Difference]: With dead ends: 1257 [2020-09-04 23:24:22,652 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 23:24:22,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=166, Invalid=2590, Unknown=0, NotChecked=0, Total=2756 [2020-09-04 23:24:22,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 23:24:22,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 23:24:22,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 23:24:22,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 23:24:22,656 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1247 [2020-09-04 23:24:22,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:24:22,656 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 23:24:22,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-09-04 23:24:22,656 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 23:24:22,657 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 23:24:22,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-09-04 23:24:22,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 23:24:22,911 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-09-04 23:24:23,089 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-09-04 23:24:24,834 WARN L193 SmtUtils]: Spent 823.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 23:24:25,547 WARN L193 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-09-04 23:24:25,864 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-09-04 23:24:26,089 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-09-04 23:24:27,899 WARN L193 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 23:24:28,608 WARN L193 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 23:24:29,834 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-09-04 23:24:30,052 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-09-04 23:24:32,255 WARN L193 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 23:24:32,955 WARN L193 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-09-04 23:24:35,090 WARN L193 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-09-04 23:24:35,298 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-09-04 23:24:35,475 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-09-04 23:24:37,101 WARN L193 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 23:24:37,801 WARN L193 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-09-04 23:24:38,104 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-09-04 23:24:38,277 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-09-04 23:24:39,785 WARN L193 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-09-04 23:24:40,515 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 23:24:41,218 WARN L193 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 23:24:42,445 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-09-04 23:24:42,664 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-09-04 23:24:43,191 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-09-04 23:24:44,426 WARN L193 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-09-04 23:24:45,126 WARN L193 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 23:24:45,404 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-09-04 23:24:45,579 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-09-04 23:24:47,175 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 23:24:47,376 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-09-04 23:24:47,548 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-09-04 23:24:49,087 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-09-04 23:24:49,350 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-09-04 23:24:51,630 WARN L193 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-09-04 23:24:52,337 WARN L193 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 23:24:53,039 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-09-04 23:24:55,354 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-09-04 23:24:55,619 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-09-04 23:24:57,851 WARN L193 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-09-04 23:24:58,554 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 23:25:00,773 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-09-04 23:25:01,039 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-09-04 23:25:02,592 WARN L193 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-09-04 23:25:03,506 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 23:25:04,366 WARN L193 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-09-04 23:25:04,576 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:25:04,769 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:25:04,912 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:25:05,052 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:25:05,177 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:25:05,297 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:25:05,467 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:25:05,642 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 21 [2020-09-04 23:25:05,833 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:25:06,339 WARN L193 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 33 [2020-09-04 23:25:06,854 WARN L193 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 33 [2020-09-04 23:25:07,163 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 29 [2020-09-04 23:25:07,293 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:25:07,602 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 28 [2020-09-04 23:25:07,899 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 28 [2020-09-04 23:25:08,198 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 29 [2020-09-04 23:25:08,322 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:25:08,624 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 29 [2020-09-04 23:25:08,920 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 29 [2020-09-04 23:25:09,224 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:25:09,534 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:25:09,841 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:25:10,143 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:25:10,269 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:25:10,436 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:25:10,725 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:25:10,853 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:25:11,138 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:25:11,433 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:25:11,716 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:25:12,004 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:25:12,281 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 29 [2020-09-04 23:25:16,209 WARN L193 SmtUtils]: Spent 3.92 s on a formula simplification. DAG size of input: 258 DAG size of output: 190 [2020-09-04 23:25:19,876 WARN L193 SmtUtils]: Spent 3.66 s on a formula simplification. DAG size of input: 249 DAG size of output: 185 [2020-09-04 23:25:19,994 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:25:20,175 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:25:20,348 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:25:20,511 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:25:20,675 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:25:20,832 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:25:20,997 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:25:21,155 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:25:21,319 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:25:21,488 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:25:21,654 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:25:21,813 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:25:21,977 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:25:22,141 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:25:22,308 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:25:22,472 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 21 [2020-09-04 23:25:22,631 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 21 [2020-09-04 23:25:22,779 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 20 [2020-09-04 23:25:22,929 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 20 [2020-09-04 23:25:23,183 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 26 [2020-09-04 23:25:23,437 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 26 [2020-09-04 23:25:23,885 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 33 [2020-09-04 23:25:24,132 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 26 [2020-09-04 23:25:24,572 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 33 [2020-09-04 23:25:24,806 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:25,070 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 28 [2020-09-04 23:25:25,333 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 28 [2020-09-04 23:25:25,576 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:25,844 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 29 [2020-09-04 23:25:26,002 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:25:26,240 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:26,522 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:25:26,803 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:25:27,043 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:27,323 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:25:27,614 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:25:27,848 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:28,132 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:25:28,404 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:25:28,642 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:28,910 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:25:29,026 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 10 [2020-09-04 23:25:29,266 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:29,546 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:25:29,824 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:25:30,077 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:33,932 WARN L193 SmtUtils]: Spent 3.85 s on a formula simplification. DAG size of input: 258 DAG size of output: 190 [2020-09-04 23:25:37,997 WARN L193 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 257 DAG size of output: 193 [2020-09-04 23:25:38,253 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:38,507 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:38,766 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:39,020 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:39,149 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:25:39,404 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:39,660 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:39,919 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:40,171 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:40,427 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:40,682 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:40,804 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 10 [2020-09-04 23:25:41,058 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:41,311 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:41,569 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:41,826 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:42,090 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:42,349 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:42,603 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:42,870 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:43,121 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:43,380 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:43,643 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:43,900 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:44,380 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 33 [2020-09-04 23:25:44,644 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:45,129 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 33 [2020-09-04 23:25:45,391 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:45,677 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 28 [2020-09-04 23:25:45,963 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 28 [2020-09-04 23:25:46,249 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 28 [2020-09-04 23:25:46,510 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:46,818 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 29 [2020-09-04 23:25:47,149 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:25:47,411 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:47,692 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:47,879 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:25:48,240 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:25:48,610 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:25:48,916 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:49,228 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:49,583 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:25:49,891 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:50,201 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:50,555 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:25:50,906 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:25:51,239 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:25:51,553 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:51,864 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:52,217 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:25:52,554 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:25:52,915 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:25:53,229 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:53,537 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:53,897 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:25:54,210 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:54,524 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:25:54,920 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:25:59,834 WARN L193 SmtUtils]: Spent 4.91 s on a formula simplification. DAG size of input: 257 DAG size of output: 193 [2020-09-04 23:26:04,290 WARN L193 SmtUtils]: Spent 4.45 s on a formula simplification. DAG size of input: 249 DAG size of output: 185 [2020-09-04 23:26:04,559 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:26:04,834 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:26:04,967 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:05,239 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:26:05,510 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:26:05,785 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:26:06,027 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:26:06,160 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:06,430 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:26:06,736 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:26:06,887 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:07,199 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:26:07,507 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:26:07,718 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:26:08,004 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:26:08,276 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:26:08,545 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:26:08,830 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:26:09,106 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:26:09,391 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:26:09,668 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:26:09,978 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 28 [2020-09-04 23:26:10,114 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:10,431 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 29 [2020-09-04 23:26:10,566 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:10,885 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 29 [2020-09-04 23:26:11,194 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:26:11,317 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:11,505 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:26:11,836 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:26:11,965 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:12,285 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:26:12,618 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:26:12,924 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:26:13,113 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:26:13,420 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:26:13,603 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:26:13,944 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:26:14,291 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:26:14,447 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:14,594 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:19,441 WARN L193 SmtUtils]: Spent 4.84 s on a formula simplification. DAG size of input: 253 DAG size of output: 189 [2020-09-04 23:26:19,574 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:19,700 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:19,832 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:20,009 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:26:20,138 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:20,269 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:20,460 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:26:20,659 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:26:20,798 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:20,936 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:21,076 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:21,213 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:21,399 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:26:21,579 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:26:21,706 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:21,853 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:21,995 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:22,134 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:22,344 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:26:22,544 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:26:22,676 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:22,809 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:22,939 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:23,069 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:23,260 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:26:23,447 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:26:23,937 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 33 [2020-09-04 23:26:24,422 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 33 [2020-09-04 23:26:24,553 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:24,843 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:26:24,984 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:25,167 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 20 [2020-09-04 23:26:25,496 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 29 [2020-09-04 23:26:25,791 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 29 [2020-09-04 23:26:25,969 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 20 [2020-09-04 23:26:26,289 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 29 [2020-09-04 23:26:26,597 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:26:26,725 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:27,032 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:26:27,221 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:26:27,529 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:26:27,659 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:27,968 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:26:28,284 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:26:28,413 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:28,715 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:26:29,009 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:26:29,331 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:26:29,658 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:26:29,994 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:26:30,315 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:26:30,626 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 29 [2020-09-04 23:26:35,292 WARN L193 SmtUtils]: Spent 4.66 s on a formula simplification. DAG size of input: 258 DAG size of output: 190 [2020-09-04 23:26:35,420 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:39,842 WARN L193 SmtUtils]: Spent 4.42 s on a formula simplification. DAG size of input: 249 DAG size of output: 185 [2020-09-04 23:26:39,989 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:40,129 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:40,321 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:26:40,454 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:40,586 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:40,780 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:26:40,970 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:26:41,104 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:41,295 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:26:41,473 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 20 [2020-09-04 23:26:41,662 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:26:41,838 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 20 [2020-09-04 23:26:42,037 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:26:42,171 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:42,368 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:26:42,503 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:42,707 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:26:42,843 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:43,033 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:26:43,168 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:43,356 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:26:43,566 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 21 [2020-09-04 23:26:43,752 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:26:43,948 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 21 [2020-09-04 23:26:44,133 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:26:44,266 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:44,461 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:26:44,589 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:44,768 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:26:44,901 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:45,087 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:26:45,224 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:45,414 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 21 [2020-09-04 23:26:45,604 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:26:45,811 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 21 [2020-09-04 23:26:46,006 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:26:46,189 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 20 [2020-09-04 23:26:46,325 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:46,516 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 20 [2020-09-04 23:26:46,664 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:46,840 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 18 [2020-09-04 23:26:46,984 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:47,158 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 18 [2020-09-04 23:26:47,300 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:47,586 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:26:47,780 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:26:48,322 WARN L193 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 33 [2020-09-04 23:26:48,850 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 33 [2020-09-04 23:26:49,133 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:26:49,329 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:26:49,643 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 28 [2020-09-04 23:26:49,849 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:26:50,173 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 29 [2020-09-04 23:26:50,315 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:50,456 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:50,779 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 29 [2020-09-04 23:26:50,922 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:51,262 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:26:51,401 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:51,747 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:26:52,114 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:26:52,463 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:26:52,607 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:52,968 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:26:53,294 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:26:53,426 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:53,747 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:26:53,939 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:26:54,248 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:26:54,555 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:26:54,742 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:26:55,078 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:26:55,275 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:26:55,412 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:26:55,739 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 29 [2020-09-04 23:26:55,878 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:27:00,440 WARN L193 SmtUtils]: Spent 4.56 s on a formula simplification. DAG size of input: 249 DAG size of output: 185 [2020-09-04 23:27:00,576 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:27:00,708 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:27:00,844 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:27:01,038 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:27:01,173 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:27:01,361 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:27:01,552 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:27:01,690 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:27:01,826 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:27:01,961 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:27:02,098 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:27:02,287 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:27:02,477 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:27:02,629 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:27:02,767 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:27:02,907 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:27:03,050 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:27:07,597 WARN L193 SmtUtils]: Spent 4.54 s on a formula simplification. DAG size of input: 257 DAG size of output: 193 [2020-09-04 23:27:12,315 WARN L193 SmtUtils]: Spent 4.71 s on a formula simplification. DAG size of input: 262 DAG size of output: 198 [2020-09-04 23:27:12,605 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:12,743 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:27:13,026 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:13,223 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:27:13,506 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:13,800 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:14,083 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:14,226 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 10 [2020-09-04 23:27:14,512 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:14,811 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:15,097 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:15,378 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:15,667 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:15,947 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:16,235 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:16,526 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:16,806 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:17,093 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:17,377 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:17,666 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:17,944 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:18,215 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:18,494 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:18,773 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:19,060 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:19,199 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:27:19,716 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 33 [2020-09-04 23:27:19,999 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:20,512 WARN L193 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 33 [2020-09-04 23:27:20,797 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:21,087 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:21,411 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 28 [2020-09-04 23:27:21,734 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 29 [2020-09-04 23:27:21,950 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:27:22,277 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:27:22,605 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:27:22,932 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:27:23,429 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 33 [2020-09-04 23:27:23,745 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:27:24,075 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:27:24,416 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:27:24,735 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:27:25,083 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:27:25,440 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:27:25,774 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:27:26,123 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:27:26,487 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:27:31,128 WARN L193 SmtUtils]: Spent 4.64 s on a formula simplification. DAG size of input: 253 DAG size of output: 189 [2020-09-04 23:27:35,669 WARN L193 SmtUtils]: Spent 4.54 s on a formula simplification. DAG size of input: 257 DAG size of output: 193 [2020-09-04 23:27:35,812 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:27:35,963 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:27:36,265 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:36,546 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:37,027 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 33 [2020-09-04 23:27:37,218 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:27:37,732 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 33 [2020-09-04 23:27:38,010 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:38,291 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:38,615 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:27:38,939 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 29 [2020-09-04 23:27:39,261 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 29 [2020-09-04 23:27:39,599 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:27:39,938 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:27:40,273 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:27:40,604 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:27:40,940 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:27:41,278 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:27:41,610 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:27:41,747 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 10 [2020-09-04 23:27:41,977 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:27:42,325 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:27:42,681 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:27:43,021 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:27:43,396 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:27:43,547 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:27:48,055 WARN L193 SmtUtils]: Spent 4.51 s on a formula simplification. DAG size of input: 257 DAG size of output: 193 [2020-09-04 23:27:48,176 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:27:48,297 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:27:48,420 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:27:48,581 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 20 [2020-09-04 23:27:48,709 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:27:48,833 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:27:48,994 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 20 [2020-09-04 23:27:49,118 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:27:49,250 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:27:49,377 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:27:49,500 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:27:49,678 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 21 [2020-09-04 23:27:49,854 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 21 [2020-09-04 23:27:49,991 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:27:50,119 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:27:50,243 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:27:50,367 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:27:50,541 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:27:50,717 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:27:50,845 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:27:50,971 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:27:51,095 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:27:51,220 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:27:51,401 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:27:51,880 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 33 [2020-09-04 23:27:52,345 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 33 [2020-09-04 23:27:52,521 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:27:52,778 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:53,037 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:53,293 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:53,545 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:53,799 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:53,920 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 10 [2020-09-04 23:27:54,177 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:54,438 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:54,693 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:54,946 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:55,211 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:55,468 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:55,726 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:55,978 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:56,236 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:56,495 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:56,757 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:57,012 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:57,267 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:57,532 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:57,791 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:58,049 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:58,307 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:58,585 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:58,853 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:59,122 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:59,384 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:59,686 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:27:59,953 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:28:00,230 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:28:00,721 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 33 [2020-09-04 23:28:00,987 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:28:01,231 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:28:01,695 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 33 [2020-09-04 23:28:01,858 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:28:02,103 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:28:02,350 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:28:02,634 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 28 [2020-09-04 23:28:02,909 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 28 [2020-09-04 23:28:03,176 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:28:03,426 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:28:03,715 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:28:04,011 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:28:04,185 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 21 [2020-09-04 23:28:04,439 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:28:04,695 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:28:04,992 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:28:05,288 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:28:05,588 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:28:05,844 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:28:06,101 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:28:06,396 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:28:06,689 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:28:06,946 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:28:07,202 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:28:07,496 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:28:07,790 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:28:08,042 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:28:08,305 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:28:08,601 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:28:08,778 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:28:09,035 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:28:09,292 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:28:09,589 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:28:09,885 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:28:10,142 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:28:10,398 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:28:10,695 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-09-04 23:28:14,943 WARN L193 SmtUtils]: Spent 4.25 s on a formula simplification. DAG size of input: 253 DAG size of output: 189 [2020-09-04 23:28:19,055 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 257 DAG size of output: 193 [2020-09-04 23:28:22,945 WARN L193 SmtUtils]: Spent 3.89 s on a formula simplification. DAG size of input: 249 DAG size of output: 185 [2020-09-04 23:28:23,196 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:28:23,448 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:28:23,572 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:28:23,828 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:28:24,104 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:28:24,229 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:28:24,479 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:28:24,729 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:28:24,852 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 12 [2020-09-04 23:28:25,101 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:28:25,352 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:28:25,529 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2020-09-04 23:28:25,781 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:28:26,045 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18 [2020-09-04 23:28:26,301 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 18