/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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/eca-rers2012/Problem01_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 23:13:43,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 23:13:43,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 23:13:43,759 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 23:13:43,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 23:13:43,765 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 23:13:43,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 23:13:43,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 23:13:43,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 23:13:43,787 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 23:13:43,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 23:13:43,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 23:13:43,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 23:13:43,794 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 23:13:43,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 23:13:43,798 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 23:13:43,799 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 23:13:43,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 23:13:43,822 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 23:13:43,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 23:13:43,833 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 23:13:43,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 23:13:43,836 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 23:13:43,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 23:13:43,847 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 23:13:43,848 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 23:13:43,848 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 23:13:43,850 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 23:13:43,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 23:13:43,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 23:13:43,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 23:13:43,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 23:13:43,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 23:13:43,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 23:13:43,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 23:13:43,858 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 23:13:43,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 23:13:43,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 23:13:43,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 23:13:43,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 23:13:43,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 23:13:43,863 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 23:13:43,886 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 23:13:43,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 23:13:43,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 23:13:43,892 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 23:13:43,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 23:13:43,892 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 23:13:43,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 23:13:43,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 23:13:43,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 23:13:43,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 23:13:43,895 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 23:13:43,895 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 23:13:43,895 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 23:13:43,896 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 23:13:43,896 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 23:13:43,896 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 23:13:43,897 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 23:13:43,897 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 23:13:43,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 23:13:43,897 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 23:13:43,898 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 23:13:43,898 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 23:13:43,898 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 23:13:44,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 23:13:44,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 23:13:44,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 23:13:44,365 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 23:13:44,366 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 23:13:44,367 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label36.c [2021-02-23 23:13:44,454 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32d328115/526a5943f8b44bf2b676baad75f4d90d/FLAG0306f67b3 [2021-02-23 23:13:45,170 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 23:13:45,174 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label36.c [2021-02-23 23:13:45,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32d328115/526a5943f8b44bf2b676baad75f4d90d/FLAG0306f67b3 [2021-02-23 23:13:45,465 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32d328115/526a5943f8b44bf2b676baad75f4d90d [2021-02-23 23:13:45,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 23:13:45,483 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 23:13:45,489 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 23:13:45,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 23:13:45,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 23:13:45,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:13:45" (1/1) ... [2021-02-23 23:13:45,496 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ac54936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:13:45, skipping insertion in model container [2021-02-23 23:13:45,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:13:45" (1/1) ... [2021-02-23 23:13:45,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 23:13:45,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 23:13:46,023 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label36.c[18233,18246] [2021-02-23 23:13:46,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:13:46,097 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 23:13:46,236 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label36.c[18233,18246] [2021-02-23 23:13:46,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:13:46,278 INFO L208 MainTranslator]: Completed translation [2021-02-23 23:13:46,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:13:46 WrapperNode [2021-02-23 23:13:46,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 23:13:46,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 23:13:46,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 23:13:46,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 23:13:46,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:13:46" (1/1) ... [2021-02-23 23:13:46,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:13:46" (1/1) ... [2021-02-23 23:13:46,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:13:46" (1/1) ... [2021-02-23 23:13:46,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:13:46" (1/1) ... [2021-02-23 23:13:46,399 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:13:46" (1/1) ... [2021-02-23 23:13:46,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:13:46" (1/1) ... [2021-02-23 23:13:46,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:13:46" (1/1) ... [2021-02-23 23:13:46,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 23:13:46,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 23:13:46,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 23:13:46,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 23:13:46,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:13:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 23:13:46,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 23:13:46,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 23:13:46,528 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 23:13:46,528 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2021-02-23 23:13:46,529 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 23:13:46,529 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2021-02-23 23:13:46,529 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 23:13:46,529 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 23:13:46,530 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 23:13:46,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 23:13:46,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 23:13:46,531 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-23 23:13:46,531 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 23:13:46,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 23:13:46,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 23:13:46,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 23:13:46,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 23:13:46,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 23:13:46,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 23:13:47,737 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 23:13:47,737 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-23 23:13:47,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:13:47 BoogieIcfgContainer [2021-02-23 23:13:47,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 23:13:47,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 23:13:47,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 23:13:47,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 23:13:47,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 11:13:45" (1/3) ... [2021-02-23 23:13:47,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410c2001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:13:47, skipping insertion in model container [2021-02-23 23:13:47,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:13:46" (2/3) ... [2021-02-23 23:13:47,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410c2001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:13:47, skipping insertion in model container [2021-02-23 23:13:47,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:13:47" (3/3) ... [2021-02-23 23:13:47,749 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label36.c [2021-02-23 23:13:47,756 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 23:13:47,761 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 23:13:47,781 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 23:13:47,805 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 23:13:47,805 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 23:13:47,805 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 23:13:47,805 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 23:13:47,805 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 23:13:47,806 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 23:13:47,806 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 23:13:47,806 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 23:13:47,832 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states. [2021-02-23 23:13:47,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-02-23 23:13:47,857 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:13:47,859 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] [2021-02-23 23:13:47,859 INFO L428 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:13:47,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:13:47,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1077162378, now seen corresponding path program 1 times [2021-02-23 23:13:47,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:13:47,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647981720] [2021-02-23 23:13:47,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:13:48,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:13:48,419 WARN L141 QuantifierPusher]: treesize reduction 17, result has 19.0 percent of original size [2021-02-23 23:13:48,421 WARN L147 QuantifierPusher]: treesize reduction 17, result has 19.0 percent of original size 4 [2021-02-23 23:13:48,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:13:48,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:13:48,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:13:48,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:13:48,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:13:48,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:13:48,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:13:48,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:13:48,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:13:48,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:13:48,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:13:48,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:13:48,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:13:48,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647981720] [2021-02-23 23:13:48,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:13:48,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 23:13:48,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308033994] [2021-02-23 23:13:48,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 23:13:48,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:13:48,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 23:13:48,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 23:13:48,732 INFO L87 Difference]: Start difference. First operand 534 states. Second operand 5 states. [2021-02-23 23:13:51,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:13:51,832 INFO L93 Difference]: Finished difference Result 1369 states and 1904 transitions. [2021-02-23 23:13:51,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 23:13:51,835 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2021-02-23 23:13:51,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:13:51,857 INFO L225 Difference]: With dead ends: 1369 [2021-02-23 23:13:51,857 INFO L226 Difference]: Without dead ends: 789 [2021-02-23 23:13:51,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-02-23 23:13:51,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2021-02-23 23:13:52,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 754. [2021-02-23 23:13:52,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 754 states. [2021-02-23 23:13:52,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 922 transitions. [2021-02-23 23:13:52,124 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 922 transitions. Word has length 138 [2021-02-23 23:13:52,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:13:52,128 INFO L480 AbstractCegarLoop]: Abstraction has 754 states and 922 transitions. [2021-02-23 23:13:52,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 23:13:52,129 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 922 transitions. [2021-02-23 23:13:52,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-23 23:13:52,150 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:13:52,150 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:13:52,151 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 23:13:52,151 INFO L428 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:13:52,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:13:52,152 INFO L82 PathProgramCache]: Analyzing trace with hash 796576566, now seen corresponding path program 1 times [2021-02-23 23:13:52,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:13:52,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709294263] [2021-02-23 23:13:52,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:13:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:13:52,471 WARN L141 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-02-23 23:13:52,472 WARN L147 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size 13 [2021-02-23 23:13:52,481 WARN L141 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-02-23 23:13:52,482 WARN L147 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size 13 [2021-02-23 23:13:52,484 WARN L141 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size [2021-02-23 23:13:52,485 WARN L147 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size 22 [2021-02-23 23:13:52,502 WARN L141 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size [2021-02-23 23:13:52,505 WARN L147 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size 22 [2021-02-23 23:13:52,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:13:52,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:13:52,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:13:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:13:52,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:13:52,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:13:52,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:13:52,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:13:52,625 WARN L141 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-02-23 23:13:52,626 WARN L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-02-23 23:13:52,636 WARN L141 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-02-23 23:13:52,637 WARN L147 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size 10 [2021-02-23 23:13:52,650 WARN L141 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-02-23 23:13:52,652 WARN L147 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size 13 [2021-02-23 23:13:52,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-23 23:13:52,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:13:52,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:13:52,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:13:52,683 WARN L141 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-02-23 23:13:52,684 WARN L147 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size 13 [2021-02-23 23:13:52,685 WARN L141 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-02-23 23:13:52,686 WARN L147 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size 16 [2021-02-23 23:13:52,702 WARN L141 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size [2021-02-23 23:13:52,703 WARN L147 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size 19 [2021-02-23 23:13:52,721 WARN L141 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-02-23 23:13:52,722 WARN L147 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size 22 [2021-02-23 23:13:52,897 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:13:52,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709294263] [2021-02-23 23:13:52,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:13:52,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-02-23 23:13:52,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230115990] [2021-02-23 23:13:52,900 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 23:13:52,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:13:52,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 23:13:52,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-02-23 23:13:52,902 INFO L87 Difference]: Start difference. First operand 754 states and 922 transitions. Second operand 11 states. [2021-02-23 23:13:53,101 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-02-23 23:13:53,565 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-23 23:13:58,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:13:58,897 INFO L93 Difference]: Finished difference Result 2960 states and 3991 transitions. [2021-02-23 23:13:58,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-23 23:13:58,898 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 159 [2021-02-23 23:13:58,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:13:58,923 INFO L225 Difference]: With dead ends: 2960 [2021-02-23 23:13:58,924 INFO L226 Difference]: Without dead ends: 2129 [2021-02-23 23:13:58,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2021-02-23 23:13:58,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2129 states. [2021-02-23 23:13:59,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2129 to 1775. [2021-02-23 23:13:59,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1775 states. [2021-02-23 23:13:59,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1775 states to 1775 states and 2134 transitions. [2021-02-23 23:13:59,321 INFO L78 Accepts]: Start accepts. Automaton has 1775 states and 2134 transitions. Word has length 159 [2021-02-23 23:13:59,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:13:59,321 INFO L480 AbstractCegarLoop]: Abstraction has 1775 states and 2134 transitions. [2021-02-23 23:13:59,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 23:13:59,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1775 states and 2134 transitions. [2021-02-23 23:13:59,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-23 23:13:59,329 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:13:59,329 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:13:59,329 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 23:13:59,330 INFO L428 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:13:59,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:13:59,330 INFO L82 PathProgramCache]: Analyzing trace with hash -716208081, now seen corresponding path program 1 times [2021-02-23 23:13:59,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:13:59,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957438331] [2021-02-23 23:13:59,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:13:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:13:59,473 WARN L141 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-02-23 23:13:59,474 WARN L147 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size 13 [2021-02-23 23:13:59,482 WARN L141 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-02-23 23:13:59,483 WARN L147 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size 13 [2021-02-23 23:13:59,486 WARN L141 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size [2021-02-23 23:13:59,487 WARN L147 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size 22 [2021-02-23 23:13:59,502 WARN L141 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size [2021-02-23 23:13:59,503 WARN L147 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size 22 [2021-02-23 23:13:59,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:13:59,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:13:59,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:13:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:13:59,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:13:59,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:13:59,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:13:59,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:13:59,608 WARN L141 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-02-23 23:13:59,609 WARN L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-02-23 23:13:59,618 WARN L141 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-02-23 23:13:59,619 WARN L147 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size 10 [2021-02-23 23:13:59,632 WARN L141 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-02-23 23:13:59,634 WARN L147 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size 13 [2021-02-23 23:13:59,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-23 23:13:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:13:59,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:13:59,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:13:59,672 WARN L141 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-02-23 23:13:59,673 WARN L147 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size 13 [2021-02-23 23:13:59,674 WARN L141 QuantifierPusher]: treesize reduction 2, result has 88.9 percent of original size [2021-02-23 23:13:59,675 WARN L147 QuantifierPusher]: treesize reduction 2, result has 88.9 percent of original size 16 [2021-02-23 23:13:59,691 WARN L141 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size [2021-02-23 23:13:59,692 WARN L147 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size 19 [2021-02-23 23:13:59,713 WARN L141 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-02-23 23:13:59,715 WARN L147 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size 22 [2021-02-23 23:13:59,930 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:13:59,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957438331] [2021-02-23 23:13:59,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:13:59,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-02-23 23:13:59,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029553275] [2021-02-23 23:13:59,932 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 23:13:59,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:13:59,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 23:13:59,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-02-23 23:13:59,934 INFO L87 Difference]: Start difference. First operand 1775 states and 2134 transitions. Second operand 11 states. [2021-02-23 23:14:00,950 WARN L202 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-23 23:14:01,971 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-02-23 23:14:05,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:14:05,621 INFO L93 Difference]: Finished difference Result 2389 states and 2801 transitions. [2021-02-23 23:14:05,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-23 23:14:05,623 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 172 [2021-02-23 23:14:05,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:14:05,636 INFO L225 Difference]: With dead ends: 2389 [2021-02-23 23:14:05,637 INFO L226 Difference]: Without dead ends: 1990 [2021-02-23 23:14:05,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2021-02-23 23:14:05,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1990 states. [2021-02-23 23:14:05,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1990 to 1767. [2021-02-23 23:14:05,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2021-02-23 23:14:05,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 2103 transitions. [2021-02-23 23:14:05,990 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 2103 transitions. Word has length 172 [2021-02-23 23:14:05,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:14:05,990 INFO L480 AbstractCegarLoop]: Abstraction has 1767 states and 2103 transitions. [2021-02-23 23:14:05,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 23:14:05,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 2103 transitions. [2021-02-23 23:14:05,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-02-23 23:14:05,998 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:14:05,999 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-02-23 23:14:05,999 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 23:14:05,999 INFO L428 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:14:06,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:14:06,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1037429418, now seen corresponding path program 1 times [2021-02-23 23:14:06,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:14:06,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126686801] [2021-02-23 23:14:06,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:14:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:06,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:06,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:14:06,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:06,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:14:06,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:06,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:14:06,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:14:06,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:06,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:06,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:14:06,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-23 23:14:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:06,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:06,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:14:06,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:06,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:14:06,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-02-23 23:14:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:06,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:06,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:14:06,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:06,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:14:06,339 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-23 23:14:06,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126686801] [2021-02-23 23:14:06,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:14:06,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-02-23 23:14:06,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663334581] [2021-02-23 23:14:06,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 23:14:06,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:14:06,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 23:14:06,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-23 23:14:06,343 INFO L87 Difference]: Start difference. First operand 1767 states and 2103 transitions. Second operand 7 states. [2021-02-23 23:14:06,581 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-02-23 23:14:09,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:14:09,390 INFO L93 Difference]: Finished difference Result 4288 states and 5230 transitions. [2021-02-23 23:14:09,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 23:14:09,391 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2021-02-23 23:14:09,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:14:09,413 INFO L225 Difference]: With dead ends: 4288 [2021-02-23 23:14:09,413 INFO L226 Difference]: Without dead ends: 2553 [2021-02-23 23:14:09,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-02-23 23:14:09,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2553 states. [2021-02-23 23:14:09,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2553 to 2219. [2021-02-23 23:14:09,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2219 states. [2021-02-23 23:14:09,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2219 states to 2219 states and 2606 transitions. [2021-02-23 23:14:09,961 INFO L78 Accepts]: Start accepts. Automaton has 2219 states and 2606 transitions. Word has length 176 [2021-02-23 23:14:09,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:14:09,962 INFO L480 AbstractCegarLoop]: Abstraction has 2219 states and 2606 transitions. [2021-02-23 23:14:09,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 23:14:09,962 INFO L276 IsEmpty]: Start isEmpty. Operand 2219 states and 2606 transitions. [2021-02-23 23:14:09,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-02-23 23:14:09,971 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:14:09,971 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:14:09,972 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 23:14:09,972 INFO L428 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:14:09,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:14:09,973 INFO L82 PathProgramCache]: Analyzing trace with hash -970087097, now seen corresponding path program 1 times [2021-02-23 23:14:09,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:14:09,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478265718] [2021-02-23 23:14:09,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:14:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:10,131 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-23 23:14:10,132 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-23 23:14:10,141 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-23 23:14:10,142 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-23 23:14:10,143 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-23 23:14:10,144 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-23 23:14:10,145 WARN L141 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size [2021-02-23 23:14:10,145 WARN L147 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size 22 [2021-02-23 23:14:10,163 WARN L141 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size [2021-02-23 23:14:10,165 WARN L147 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size 22 [2021-02-23 23:14:10,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:10,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:14:10,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:14:10,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:10,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:10,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:14:10,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:10,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:14:10,272 WARN L141 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-02-23 23:14:10,272 WARN L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-02-23 23:14:10,283 WARN L141 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-02-23 23:14:10,283 WARN L147 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size 10 [2021-02-23 23:14:10,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-23 23:14:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:10,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:10,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:14:10,312 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-23 23:14:10,313 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-23 23:14:10,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-02-23 23:14:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:10,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:10,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:14:10,330 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-23 23:14:10,331 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-23 23:14:10,331 WARN L141 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-02-23 23:14:10,332 WARN L147 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size 13 [2021-02-23 23:14:10,346 WARN L141 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-02-23 23:14:10,347 WARN L147 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size 16 [2021-02-23 23:14:10,363 WARN L141 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size [2021-02-23 23:14:10,364 WARN L147 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size 19 [2021-02-23 23:14:10,383 WARN L141 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-02-23 23:14:10,384 WARN L147 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size 22 [2021-02-23 23:14:10,564 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-02-23 23:14:10,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478265718] [2021-02-23 23:14:10,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:14:10,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-02-23 23:14:10,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996568309] [2021-02-23 23:14:10,566 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 23:14:10,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:14:10,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 23:14:10,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-02-23 23:14:10,567 INFO L87 Difference]: Start difference. First operand 2219 states and 2606 transitions. Second operand 11 states. [2021-02-23 23:14:11,440 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-23 23:14:12,085 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-02-23 23:14:16,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:14:16,560 INFO L93 Difference]: Finished difference Result 5465 states and 6552 transitions. [2021-02-23 23:14:16,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-23 23:14:16,562 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 187 [2021-02-23 23:14:16,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:14:16,587 INFO L225 Difference]: With dead ends: 5465 [2021-02-23 23:14:16,587 INFO L226 Difference]: Without dead ends: 3297 [2021-02-23 23:14:16,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2021-02-23 23:14:16,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3297 states. [2021-02-23 23:14:17,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3297 to 2544. [2021-02-23 23:14:17,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2544 states. [2021-02-23 23:14:17,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2544 states to 2544 states and 2967 transitions. [2021-02-23 23:14:17,184 INFO L78 Accepts]: Start accepts. Automaton has 2544 states and 2967 transitions. Word has length 187 [2021-02-23 23:14:17,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:14:17,184 INFO L480 AbstractCegarLoop]: Abstraction has 2544 states and 2967 transitions. [2021-02-23 23:14:17,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 23:14:17,184 INFO L276 IsEmpty]: Start isEmpty. Operand 2544 states and 2967 transitions. [2021-02-23 23:14:17,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-02-23 23:14:17,194 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:14:17,194 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2021-02-23 23:14:17,195 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 23:14:17,195 INFO L428 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:14:17,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:14:17,196 INFO L82 PathProgramCache]: Analyzing trace with hash 642192650, now seen corresponding path program 1 times [2021-02-23 23:14:17,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:14:17,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498075137] [2021-02-23 23:14:17,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:14:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:17,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:17,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:14:17,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:17,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:14:17,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:17,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:14:17,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:17,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:14:17,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:17,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:14:17,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:14:17,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:17,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:17,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:14:17,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:17,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:14:17,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-23 23:14:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:17,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:17,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:14:17,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-02-23 23:14:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:17,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:17,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:14:17,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:17,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:14:17,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-02-23 23:14:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:17,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:17,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:14:17,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:17,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:14:17,517 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 64 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-23 23:14:17,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498075137] [2021-02-23 23:14:17,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:14:17,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-02-23 23:14:17,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231802481] [2021-02-23 23:14:17,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 23:14:17,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:14:17,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 23:14:17,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-02-23 23:14:17,520 INFO L87 Difference]: Start difference. First operand 2544 states and 2967 transitions. Second operand 9 states. [2021-02-23 23:14:24,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:14:24,428 INFO L93 Difference]: Finished difference Result 8193 states and 9645 transitions. [2021-02-23 23:14:24,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-23 23:14:24,429 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 205 [2021-02-23 23:14:24,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:14:24,467 INFO L225 Difference]: With dead ends: 8193 [2021-02-23 23:14:24,467 INFO L226 Difference]: Without dead ends: 5822 [2021-02-23 23:14:24,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=150, Invalid=500, Unknown=0, NotChecked=0, Total=650 [2021-02-23 23:14:24,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5822 states. [2021-02-23 23:14:25,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5822 to 4819. [2021-02-23 23:14:25,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4819 states. [2021-02-23 23:14:25,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4819 states to 4819 states and 5598 transitions. [2021-02-23 23:14:25,463 INFO L78 Accepts]: Start accepts. Automaton has 4819 states and 5598 transitions. Word has length 205 [2021-02-23 23:14:25,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:14:25,464 INFO L480 AbstractCegarLoop]: Abstraction has 4819 states and 5598 transitions. [2021-02-23 23:14:25,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 23:14:25,464 INFO L276 IsEmpty]: Start isEmpty. Operand 4819 states and 5598 transitions. [2021-02-23 23:14:25,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-02-23 23:14:25,479 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:14:25,479 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-02-23 23:14:25,480 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 23:14:25,480 INFO L428 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:14:25,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:14:25,480 INFO L82 PathProgramCache]: Analyzing trace with hash -2022437727, now seen corresponding path program 1 times [2021-02-23 23:14:25,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:14:25,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710820975] [2021-02-23 23:14:25,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:14:25,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:25,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:25,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:14:25,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:25,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:14:25,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:25,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:14:25,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:25,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 23:14:25,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:25,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:14:25,686 WARN L202 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-02-23 23:14:25,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:14:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:25,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:25,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:14:25,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:25,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:14:25,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-23 23:14:25,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:25,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:25,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:14:25,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-02-23 23:14:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:25,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:25,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:14:25,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:25,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:14:25,754 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:14:25,755 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:14:25,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-02-23 23:14:25,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:25,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:25,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:14:25,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:25,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 23:14:25,859 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 68 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-23 23:14:25,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710820975] [2021-02-23 23:14:25,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:14:25,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-02-23 23:14:25,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817966516] [2021-02-23 23:14:25,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 23:14:25,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:14:25,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 23:14:25,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-02-23 23:14:25,861 INFO L87 Difference]: Start difference. First operand 4819 states and 5598 transitions. Second operand 10 states. [2021-02-23 23:14:26,229 WARN L202 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2021-02-23 23:14:28,196 WARN L202 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2021-02-23 23:14:32,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:14:32,608 INFO L93 Difference]: Finished difference Result 11811 states and 13892 transitions. [2021-02-23 23:14:32,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-02-23 23:14:32,609 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 209 [2021-02-23 23:14:32,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:14:32,650 INFO L225 Difference]: With dead ends: 11811 [2021-02-23 23:14:32,651 INFO L226 Difference]: Without dead ends: 7165 [2021-02-23 23:14:32,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=312, Invalid=1170, Unknown=0, NotChecked=0, Total=1482 [2021-02-23 23:14:32,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7165 states. [2021-02-23 23:14:34,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7165 to 5797. [2021-02-23 23:14:34,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5797 states. [2021-02-23 23:14:34,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5797 states to 5797 states and 6729 transitions. [2021-02-23 23:14:34,037 INFO L78 Accepts]: Start accepts. Automaton has 5797 states and 6729 transitions. Word has length 209 [2021-02-23 23:14:34,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:14:34,038 INFO L480 AbstractCegarLoop]: Abstraction has 5797 states and 6729 transitions. [2021-02-23 23:14:34,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 23:14:34,038 INFO L276 IsEmpty]: Start isEmpty. Operand 5797 states and 6729 transitions. [2021-02-23 23:14:34,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-02-23 23:14:34,052 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:14:34,053 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-02-23 23:14:34,053 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 23:14:34,053 INFO L428 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:14:34,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:14:34,054 INFO L82 PathProgramCache]: Analyzing trace with hash 385501413, now seen corresponding path program 1 times [2021-02-23 23:14:34,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:14:34,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496271496] [2021-02-23 23:14:34,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:14:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:34,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:34,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:14:34,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:34,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:14:34,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:34,108 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:14:34,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:14:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:34,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:34,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:14:34,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-23 23:14:34,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:34,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:34,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:14:34,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-02-23 23:14:34,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:34,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:34,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:14:34,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:34,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:14:34,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-02-23 23:14:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:34,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:34,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:14:34,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:34,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:14:34,340 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-02-23 23:14:34,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496271496] [2021-02-23 23:14:34,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:14:34,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-02-23 23:14:34,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096008535] [2021-02-23 23:14:34,341 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 23:14:34,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:14:34,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 23:14:34,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-23 23:14:34,342 INFO L87 Difference]: Start difference. First operand 5797 states and 6729 transitions. Second operand 7 states. [2021-02-23 23:14:38,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:14:38,286 INFO L93 Difference]: Finished difference Result 12883 states and 15080 transitions. [2021-02-23 23:14:38,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 23:14:38,287 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 216 [2021-02-23 23:14:38,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:14:38,323 INFO L225 Difference]: With dead ends: 12883 [2021-02-23 23:14:38,323 INFO L226 Difference]: Without dead ends: 7259 [2021-02-23 23:14:38,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-02-23 23:14:38,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7259 states. [2021-02-23 23:14:39,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7259 to 7155. [2021-02-23 23:14:39,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7155 states. [2021-02-23 23:14:39,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7155 states to 7155 states and 8312 transitions. [2021-02-23 23:14:39,828 INFO L78 Accepts]: Start accepts. Automaton has 7155 states and 8312 transitions. Word has length 216 [2021-02-23 23:14:39,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:14:39,828 INFO L480 AbstractCegarLoop]: Abstraction has 7155 states and 8312 transitions. [2021-02-23 23:14:39,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 23:14:39,829 INFO L276 IsEmpty]: Start isEmpty. Operand 7155 states and 8312 transitions. [2021-02-23 23:14:39,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-02-23 23:14:39,844 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:14:39,844 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-02-23 23:14:39,844 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 23:14:39,845 INFO L428 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:14:39,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:14:39,845 INFO L82 PathProgramCache]: Analyzing trace with hash -416028646, now seen corresponding path program 1 times [2021-02-23 23:14:39,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:14:39,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983818677] [2021-02-23 23:14:39,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:14:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:39,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:39,898 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:14:39,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:39,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:14:39,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:39,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:14:39,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:39,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:14:39,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:14:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:40,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:40,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:14:40,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:40,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:14:40,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-23 23:14:40,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:40,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:40,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:14:40,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:40,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:14:40,024 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:14:40,024 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:14:40,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-02-23 23:14:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:40,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:40,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:14:40,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:40,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 23:14:40,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-02-23 23:14:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:40,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:40,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:14:40,136 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 77 proven. 11 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-02-23 23:14:40,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983818677] [2021-02-23 23:14:40,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:14:40,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-02-23 23:14:40,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404517029] [2021-02-23 23:14:40,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 23:14:40,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:14:40,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 23:14:40,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-02-23 23:14:40,139 INFO L87 Difference]: Start difference. First operand 7155 states and 8312 transitions. Second operand 8 states. [2021-02-23 23:14:41,679 WARN L202 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2021-02-23 23:14:44,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:14:44,422 INFO L93 Difference]: Finished difference Result 14514 states and 16889 transitions. [2021-02-23 23:14:44,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-23 23:14:44,423 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 223 [2021-02-23 23:14:44,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:14:44,457 INFO L225 Difference]: With dead ends: 14514 [2021-02-23 23:14:44,457 INFO L226 Difference]: Without dead ends: 7532 [2021-02-23 23:14:44,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-23 23:14:44,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7532 states. [2021-02-23 23:14:46,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7532 to 7020. [2021-02-23 23:14:46,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7020 states. [2021-02-23 23:14:46,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7020 states to 7020 states and 8121 transitions. [2021-02-23 23:14:46,228 INFO L78 Accepts]: Start accepts. Automaton has 7020 states and 8121 transitions. Word has length 223 [2021-02-23 23:14:46,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:14:46,228 INFO L480 AbstractCegarLoop]: Abstraction has 7020 states and 8121 transitions. [2021-02-23 23:14:46,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 23:14:46,229 INFO L276 IsEmpty]: Start isEmpty. Operand 7020 states and 8121 transitions. [2021-02-23 23:14:46,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-02-23 23:14:46,244 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:14:46,245 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:14:46,245 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 23:14:46,245 INFO L428 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:14:46,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:14:46,246 INFO L82 PathProgramCache]: Analyzing trace with hash -623328307, now seen corresponding path program 1 times [2021-02-23 23:14:46,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:14:46,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244521826] [2021-02-23 23:14:46,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:14:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:46,410 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:14:46,411 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:14:46,418 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:14:46,418 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:14:46,419 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:14:46,420 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:14:46,420 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:14:46,421 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:14:46,422 WARN L141 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size [2021-02-23 23:14:46,423 WARN L147 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size 22 [2021-02-23 23:14:46,440 WARN L141 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size [2021-02-23 23:14:46,441 WARN L147 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size 22 [2021-02-23 23:14:46,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:46,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:14:46,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:14:46,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:46,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:46,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:14:46,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:46,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:14:46,550 WARN L141 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-02-23 23:14:46,551 WARN L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-02-23 23:14:46,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-23 23:14:46,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:46,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:46,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:14:46,577 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:14:46,577 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:14:46,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-02-23 23:14:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:46,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:46,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:14:46,606 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:14:46,607 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:14:46,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-02-23 23:14:46,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:46,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:46,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:14:46,625 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:14:46,626 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:14:46,626 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-23 23:14:46,627 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-23 23:14:46,640 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-23 23:14:46,640 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-23 23:14:46,656 WARN L141 QuantifierPusher]: treesize reduction 6, result has 72.7 percent of original size [2021-02-23 23:14:46,657 WARN L147 QuantifierPusher]: treesize reduction 6, result has 72.7 percent of original size 16 [2021-02-23 23:14:46,675 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-02-23 23:14:46,675 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-02-23 23:14:46,697 WARN L141 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-02-23 23:14:46,698 WARN L147 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size 22 [2021-02-23 23:14:46,883 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 82 proven. 3 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-02-23 23:14:46,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244521826] [2021-02-23 23:14:46,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:14:46,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-02-23 23:14:46,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165338208] [2021-02-23 23:14:46,885 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 23:14:46,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:14:46,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 23:14:46,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-02-23 23:14:46,885 INFO L87 Difference]: Start difference. First operand 7020 states and 8121 transitions. Second operand 11 states. [2021-02-23 23:14:47,874 WARN L202 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-23 23:14:49,927 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-02-23 23:14:52,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:14:52,570 INFO L93 Difference]: Finished difference Result 14711 states and 17064 transitions. [2021-02-23 23:14:52,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-23 23:14:52,571 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 239 [2021-02-23 23:14:52,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:14:52,602 INFO L225 Difference]: With dead ends: 14711 [2021-02-23 23:14:52,602 INFO L226 Difference]: Without dead ends: 6598 [2021-02-23 23:14:52,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2021-02-23 23:14:52,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6598 states. [2021-02-23 23:14:54,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6598 to 6431. [2021-02-23 23:14:54,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6431 states. [2021-02-23 23:14:54,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6431 states to 6431 states and 7132 transitions. [2021-02-23 23:14:54,144 INFO L78 Accepts]: Start accepts. Automaton has 6431 states and 7132 transitions. Word has length 239 [2021-02-23 23:14:54,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:14:54,145 INFO L480 AbstractCegarLoop]: Abstraction has 6431 states and 7132 transitions. [2021-02-23 23:14:54,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 23:14:54,145 INFO L276 IsEmpty]: Start isEmpty. Operand 6431 states and 7132 transitions. [2021-02-23 23:14:54,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-02-23 23:14:54,155 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:14:54,156 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-02-23 23:14:54,156 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 23:14:54,156 INFO L428 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:14:54,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:14:54,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1279305687, now seen corresponding path program 1 times [2021-02-23 23:14:54,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:14:54,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560823116] [2021-02-23 23:14:54,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:14:54,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:54,277 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:14:54,278 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:14:54,283 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:14:54,284 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:14:54,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:54,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:14:54,289 WARN L141 QuantifierPusher]: treesize reduction 2, result has 92.0 percent of original size [2021-02-23 23:14:54,290 WARN L147 QuantifierPusher]: treesize reduction 2, result has 92.0 percent of original size 23 [2021-02-23 23:14:54,305 WARN L141 QuantifierPusher]: treesize reduction 2, result has 92.0 percent of original size [2021-02-23 23:14:54,305 WARN L147 QuantifierPusher]: treesize reduction 2, result has 92.0 percent of original size 23 [2021-02-23 23:14:54,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:54,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:14:54,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:14:54,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:54,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:54,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:14:54,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:54,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:14:54,400 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:14:54,401 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:14:54,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-23 23:14:54,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:54,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:54,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:14:54,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:54,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:14:54,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 23:14:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:54,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:54,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:14:54,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:54,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:14:54,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-02-23 23:14:54,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:14:54,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:54,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:14:54,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:14:54,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:14:54,467 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:14:54,468 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:14:54,480 WARN L141 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-02-23 23:14:54,481 WARN L147 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size 10 [2021-02-23 23:14:54,495 WARN L141 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-02-23 23:14:54,495 WARN L147 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size 13 [2021-02-23 23:14:54,512 WARN L141 QuantifierPusher]: treesize reduction 8, result has 66.7 percent of original size [2021-02-23 23:14:54,512 WARN L147 QuantifierPusher]: treesize reduction 8, result has 66.7 percent of original size 16 [2021-02-23 23:14:54,532 WARN L141 QuantifierPusher]: treesize reduction 10, result has 65.5 percent of original size [2021-02-23 23:14:54,532 WARN L147 QuantifierPusher]: treesize reduction 10, result has 65.5 percent of original size 19 [2021-02-23 23:14:54,554 WARN L141 QuantifierPusher]: treesize reduction 12, result has 64.7 percent of original size [2021-02-23 23:14:54,555 WARN L147 QuantifierPusher]: treesize reduction 12, result has 64.7 percent of original size 22 [2021-02-23 23:14:54,859 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 89 proven. 24 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-02-23 23:14:54,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [560823116] [2021-02-23 23:14:54,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:14:54,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-02-23 23:14:54,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387486027] [2021-02-23 23:14:54,861 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 23:14:54,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:14:54,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 23:14:54,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-02-23 23:14:54,862 INFO L87 Difference]: Start difference. First operand 6431 states and 7132 transitions. Second operand 14 states. [2021-02-23 23:14:55,299 WARN L202 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 95 [2021-02-23 23:14:56,265 WARN L202 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 97 [2021-02-23 23:14:57,365 WARN L202 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 94 [2021-02-23 23:14:58,104 WARN L202 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2021-02-23 23:15:01,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:15:01,876 INFO L93 Difference]: Finished difference Result 13193 states and 14629 transitions. [2021-02-23 23:15:01,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-23 23:15:01,877 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 256 [2021-02-23 23:15:01,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:15:01,918 INFO L225 Difference]: With dead ends: 13193 [2021-02-23 23:15:01,918 INFO L226 Difference]: Without dead ends: 6705 [2021-02-23 23:15:01,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=191, Invalid=409, Unknown=0, NotChecked=0, Total=600 [2021-02-23 23:15:01,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6705 states. [2021-02-23 23:15:03,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6705 to 6404. [2021-02-23 23:15:03,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6404 states. [2021-02-23 23:15:03,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6404 states to 6404 states and 7085 transitions. [2021-02-23 23:15:03,316 INFO L78 Accepts]: Start accepts. Automaton has 6404 states and 7085 transitions. Word has length 256 [2021-02-23 23:15:03,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:15:03,317 INFO L480 AbstractCegarLoop]: Abstraction has 6404 states and 7085 transitions. [2021-02-23 23:15:03,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 23:15:03,317 INFO L276 IsEmpty]: Start isEmpty. Operand 6404 states and 7085 transitions. [2021-02-23 23:15:03,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-02-23 23:15:03,327 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:15:03,327 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-02-23 23:15:03,327 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-23 23:15:03,327 INFO L428 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:15:03,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:15:03,328 INFO L82 PathProgramCache]: Analyzing trace with hash -337411928, now seen corresponding path program 1 times [2021-02-23 23:15:03,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:15:03,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254722234] [2021-02-23 23:15:03,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:15:03,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:15:03,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:03,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:15:03,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:03,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:15:03,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:03,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:15:03,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:03,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 23:15:03,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:03,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:15:03,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:15:03,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:15:03,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:03,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:15:03,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:03,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:15:03,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-23 23:15:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:15:03,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:03,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:15:03,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 23:15:03,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:15:03,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:03,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:15:03,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:03,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:15:03,551 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 23:15:03,552 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 23:15:03,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-02-23 23:15:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:15:03,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:03,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:15:03,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:03,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:15:03,661 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 128 proven. 16 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-02-23 23:15:03,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254722234] [2021-02-23 23:15:03,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:15:03,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-02-23 23:15:03,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246254256] [2021-02-23 23:15:03,662 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 23:15:03,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:15:03,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 23:15:03,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-02-23 23:15:03,663 INFO L87 Difference]: Start difference. First operand 6404 states and 7085 transitions. Second operand 10 states. [2021-02-23 23:15:05,416 WARN L202 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 94 [2021-02-23 23:15:08,305 WARN L202 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2021-02-23 23:15:10,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:15:10,095 INFO L93 Difference]: Finished difference Result 13084 states and 14485 transitions. [2021-02-23 23:15:10,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-02-23 23:15:10,101 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 259 [2021-02-23 23:15:10,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:15:10,128 INFO L225 Difference]: With dead ends: 13084 [2021-02-23 23:15:10,128 INFO L226 Difference]: Without dead ends: 6696 [2021-02-23 23:15:10,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=279, Invalid=1053, Unknown=0, NotChecked=0, Total=1332 [2021-02-23 23:15:10,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6696 states. [2021-02-23 23:15:11,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6696 to 6035. [2021-02-23 23:15:11,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6035 states. [2021-02-23 23:15:11,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6035 states to 6035 states and 6439 transitions. [2021-02-23 23:15:11,524 INFO L78 Accepts]: Start accepts. Automaton has 6035 states and 6439 transitions. Word has length 259 [2021-02-23 23:15:11,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:15:11,525 INFO L480 AbstractCegarLoop]: Abstraction has 6035 states and 6439 transitions. [2021-02-23 23:15:11,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 23:15:11,525 INFO L276 IsEmpty]: Start isEmpty. Operand 6035 states and 6439 transitions. [2021-02-23 23:15:11,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2021-02-23 23:15:11,531 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:15:11,531 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:15:11,531 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-23 23:15:11,531 INFO L428 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:15:11,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:15:11,532 INFO L82 PathProgramCache]: Analyzing trace with hash -8102982, now seen corresponding path program 1 times [2021-02-23 23:15:11,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:15:11,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773231639] [2021-02-23 23:15:11,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:15:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:15:11,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:11,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:15:11,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:11,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:15:11,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:11,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:15:11,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:11,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:15:11,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:11,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:15:11,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:15:11,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:15:11,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:11,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:15:11,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:11,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:15:11,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-23 23:15:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:15:11,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:11,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:15:11,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:11,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:15:11,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-02-23 23:15:11,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:15:11,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:11,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:15:11,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:11,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:15:11,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:11,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:15:11,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-02-23 23:15:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:15:11,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:11,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:15:11,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:11,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:15:11,887 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 173 proven. 4 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-02-23 23:15:11,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773231639] [2021-02-23 23:15:11,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:15:11,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-02-23 23:15:11,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168097500] [2021-02-23 23:15:11,888 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 23:15:11,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:15:11,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 23:15:11,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-02-23 23:15:11,890 INFO L87 Difference]: Start difference. First operand 6035 states and 6439 transitions. Second operand 8 states. [2021-02-23 23:15:13,259 WARN L202 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2021-02-23 23:15:15,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:15:15,597 INFO L93 Difference]: Finished difference Result 11998 states and 12802 transitions. [2021-02-23 23:15:15,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-23 23:15:15,598 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 299 [2021-02-23 23:15:15,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:15:15,624 INFO L225 Difference]: With dead ends: 11998 [2021-02-23 23:15:15,624 INFO L226 Difference]: Without dead ends: 6136 [2021-02-23 23:15:15,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-23 23:15:15,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6136 states. [2021-02-23 23:15:16,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6136 to 5767. [2021-02-23 23:15:16,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5767 states. [2021-02-23 23:15:16,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5767 states to 5767 states and 6127 transitions. [2021-02-23 23:15:16,940 INFO L78 Accepts]: Start accepts. Automaton has 5767 states and 6127 transitions. Word has length 299 [2021-02-23 23:15:16,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:15:16,940 INFO L480 AbstractCegarLoop]: Abstraction has 5767 states and 6127 transitions. [2021-02-23 23:15:16,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 23:15:16,941 INFO L276 IsEmpty]: Start isEmpty. Operand 5767 states and 6127 transitions. [2021-02-23 23:15:16,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2021-02-23 23:15:16,946 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:15:16,946 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:15:16,946 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-23 23:15:16,946 INFO L428 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:15:16,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:15:16,947 INFO L82 PathProgramCache]: Analyzing trace with hash 938393407, now seen corresponding path program 1 times [2021-02-23 23:15:16,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:15:16,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491596631] [2021-02-23 23:15:16,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:15:16,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:15:17,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:17,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:15:17,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:17,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:15:17,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:17,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:15:17,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:17,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:15:17,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:17,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:15:17,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:17,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:15:17,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:15:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:15:17,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:17,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:15:17,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:17,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:15:17,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-23 23:15:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:15:17,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:17,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:15:17,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-02-23 23:15:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:15:17,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:17,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:15:17,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-02-23 23:15:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:15:17,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:17,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:15:17,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-02-23 23:15:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:15:17,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:17,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:15:17,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:15:17,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:15:17,337 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 150 proven. 32 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-02-23 23:15:17,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491596631] [2021-02-23 23:15:17,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:15:17,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-02-23 23:15:17,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060982520] [2021-02-23 23:15:17,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 23:15:17,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:15:17,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 23:15:17,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-23 23:15:17,339 INFO L87 Difference]: Start difference. First operand 5767 states and 6127 transitions. Second operand 7 states. [2021-02-23 23:15:20,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:15:20,188 INFO L93 Difference]: Finished difference Result 11213 states and 11926 transitions. [2021-02-23 23:15:20,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 23:15:20,189 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 320 [2021-02-23 23:15:20,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:15:20,195 INFO L225 Difference]: With dead ends: 11213 [2021-02-23 23:15:20,195 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 23:15:20,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-02-23 23:15:20,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 23:15:20,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 23:15:20,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 23:15:20,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 23:15:20,212 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 320 [2021-02-23 23:15:20,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:15:20,213 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 23:15:20,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 23:15:20,213 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 23:15:20,213 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 23:15:20,213 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-23 23:15:20,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 23:15:21,418 WARN L202 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-02-23 23:15:22,385 WARN L202 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-23 23:15:22,839 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 101 [2021-02-23 23:15:41,888 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 118 [2021-02-23 23:15:42,001 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 118 [2021-02-23 23:15:42,158 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 124 [2021-02-23 23:15:42,316 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 118 [2021-02-23 23:15:42,428 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 119 [2021-02-23 23:15:42,531 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 119 [2021-02-23 23:17:10,961 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 133 [2021-02-23 23:18:07,641 WARN L202 SmtUtils]: Spent 964.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 74 [2021-02-23 23:18:08,651 WARN L202 SmtUtils]: Spent 996.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 74 [2021-02-23 23:18:11,741 WARN L202 SmtUtils]: Spent 3.08 s on a formula simplification. DAG size of input: 289 DAG size of output: 91 [2021-02-23 23:18:12,986 WARN L202 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 208 DAG size of output: 73 [2021-02-23 23:18:15,983 WARN L202 SmtUtils]: Spent 2.99 s on a formula simplification. DAG size of input: 287 DAG size of output: 92 [2021-02-23 23:18:19,008 WARN L202 SmtUtils]: Spent 3.01 s on a formula simplification. DAG size of input: 287 DAG size of output: 92 [2021-02-23 23:18:22,004 WARN L202 SmtUtils]: Spent 2.98 s on a formula simplification. DAG size of input: 287 DAG size of output: 92 [2021-02-23 23:18:23,126 WARN L202 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 211 DAG size of output: 75 [2021-02-23 23:18:24,139 WARN L202 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 210 DAG size of output: 74 [2021-02-23 23:18:25,151 WARN L202 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 210 DAG size of output: 74 [2021-02-23 23:18:28,170 WARN L202 SmtUtils]: Spent 3.01 s on a formula simplification. DAG size of input: 287 DAG size of output: 92 [2021-02-23 23:18:31,345 WARN L202 SmtUtils]: Spent 3.16 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:18:32,410 WARN L202 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 162 DAG size of output: 71 [2021-02-23 23:18:33,814 WARN L202 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 170 DAG size of output: 80 [2021-02-23 23:18:34,857 WARN L202 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 165 DAG size of output: 72 [2021-02-23 23:18:36,513 WARN L202 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 199 DAG size of output: 77 [2021-02-23 23:18:38,558 WARN L202 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 225 DAG size of output: 79 [2021-02-23 23:18:39,535 WARN L202 SmtUtils]: Spent 966.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 73 [2021-02-23 23:18:40,727 WARN L202 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 165 DAG size of output: 72 [2021-02-23 23:18:41,806 WARN L202 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 162 DAG size of output: 72 [2021-02-23 23:18:45,012 WARN L202 SmtUtils]: Spent 3.20 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:18:46,818 WARN L202 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 174 DAG size of output: 79 [2021-02-23 23:18:48,058 WARN L202 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 165 DAG size of output: 75 [2021-02-23 23:18:49,123 WARN L202 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 166 DAG size of output: 74 [2021-02-23 23:18:52,331 WARN L202 SmtUtils]: Spent 3.20 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:18:53,386 WARN L202 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 164 DAG size of output: 71 [2021-02-23 23:18:54,595 WARN L202 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 178 DAG size of output: 78 [2021-02-23 23:18:55,184 WARN L202 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 64 [2021-02-23 23:18:56,291 WARN L202 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 167 DAG size of output: 75 [2021-02-23 23:18:57,349 WARN L202 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 210 DAG size of output: 74 [2021-02-23 23:18:58,372 WARN L202 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 210 DAG size of output: 74 [2021-02-23 23:19:01,562 WARN L202 SmtUtils]: Spent 3.18 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:19:03,374 WARN L202 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 229 DAG size of output: 82 [2021-02-23 23:19:04,559 WARN L202 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 166 DAG size of output: 73 [2021-02-23 23:19:05,814 WARN L202 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 162 DAG size of output: 73 [2021-02-23 23:19:06,878 WARN L202 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 161 DAG size of output: 69 [2021-02-23 23:19:07,965 WARN L202 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 160 DAG size of output: 70 [2021-02-23 23:19:11,184 WARN L202 SmtUtils]: Spent 3.21 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:19:12,427 WARN L202 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 216 DAG size of output: 77 [2021-02-23 23:19:13,486 WARN L202 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 163 DAG size of output: 69 [2021-02-23 23:19:14,953 WARN L202 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 217 DAG size of output: 76 [2021-02-23 23:19:16,270 WARN L202 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 166 DAG size of output: 77 [2021-02-23 23:19:17,517 WARN L202 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 166 DAG size of output: 75 [2021-02-23 23:19:20,735 WARN L202 SmtUtils]: Spent 3.21 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:19:22,660 WARN L202 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 178 DAG size of output: 81 [2021-02-23 23:19:23,928 WARN L202 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 169 DAG size of output: 74 [2021-02-23 23:19:25,344 WARN L202 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 173 DAG size of output: 77 [2021-02-23 23:19:26,569 WARN L202 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 168 DAG size of output: 75 [2021-02-23 23:19:27,785 WARN L202 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 175 DAG size of output: 78 [2021-02-23 23:19:29,582 WARN L202 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 235 DAG size of output: 80 [2021-02-23 23:19:30,605 WARN L202 SmtUtils]: Spent 984.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 73 [2021-02-23 23:19:31,950 WARN L202 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 215 DAG size of output: 74 [2021-02-23 23:19:33,036 WARN L202 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 162 DAG size of output: 71 [2021-02-23 23:19:36,449 WARN L202 SmtUtils]: Spent 3.40 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:19:37,764 WARN L202 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 167 DAG size of output: 72 [2021-02-23 23:19:38,913 WARN L202 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 161 DAG size of output: 69 [2021-02-23 23:19:40,433 WARN L202 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 218 DAG size of output: 78 [2021-02-23 23:19:43,982 WARN L202 SmtUtils]: Spent 3.54 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:19:47,536 WARN L202 SmtUtils]: Spent 3.54 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:19:48,680 WARN L202 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 160 DAG size of output: 69 [2021-02-23 23:19:52,137 WARN L202 SmtUtils]: Spent 3.37 s on a formula simplification. DAG size of input: 289 DAG size of output: 91 [2021-02-23 23:19:55,676 WARN L202 SmtUtils]: Spent 3.53 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:19:57,352 WARN L202 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 166 DAG size of output: 75 [2021-02-23 23:19:58,504 WARN L202 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 164 DAG size of output: 72 [2021-02-23 23:19:59,861 WARN L202 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 208 DAG size of output: 73 [2021-02-23 23:20:00,993 WARN L202 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 210 DAG size of output: 74 [2021-02-23 23:20:04,313 WARN L202 SmtUtils]: Spent 3.31 s on a formula simplification. DAG size of input: 289 DAG size of output: 91 [2021-02-23 23:20:05,543 WARN L202 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 211 DAG size of output: 75 [2021-02-23 23:20:08,739 WARN L202 SmtUtils]: Spent 3.19 s on a formula simplification. DAG size of input: 287 DAG size of output: 92 [2021-02-23 23:20:12,062 WARN L202 SmtUtils]: Spent 3.31 s on a formula simplification. DAG size of input: 287 DAG size of output: 92 [2021-02-23 23:20:15,255 WARN L202 SmtUtils]: Spent 3.18 s on a formula simplification. DAG size of input: 287 DAG size of output: 92 [2021-02-23 23:20:16,384 WARN L202 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 210 DAG size of output: 74 [2021-02-23 23:20:18,421 WARN L202 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 177 DAG size of output: 80 [2021-02-23 23:20:19,995 WARN L202 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 170 DAG size of output: 81 [2021-02-23 23:20:21,479 WARN L202 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 175 DAG size of output: 80 [2021-02-23 23:20:23,106 WARN L202 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 215 DAG size of output: 77 [2021-02-23 23:20:26,581 WARN L202 SmtUtils]: Spent 3.46 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:20:30,058 WARN L202 SmtUtils]: Spent 3.47 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:20:31,231 WARN L202 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 162 DAG size of output: 70 [2021-02-23 23:20:32,873 WARN L202 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 218 DAG size of output: 76 [2021-02-23 23:20:35,016 WARN L202 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 221 DAG size of output: 78 [2021-02-23 23:20:36,945 WARN L202 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 174 DAG size of output: 78 [2021-02-23 23:20:38,245 WARN L202 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 164 DAG size of output: 72 [2021-02-23 23:20:39,857 WARN L202 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 191 DAG size of output: 80 [2021-02-23 23:20:41,675 WARN L202 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 216 DAG size of output: 75 [2021-02-23 23:20:43,048 WARN L202 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 177 DAG size of output: 76 [2021-02-23 23:20:46,547 WARN L202 SmtUtils]: Spent 3.49 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:20:47,723 WARN L202 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 160 DAG size of output: 70 [2021-02-23 23:20:49,186 WARN L202 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 182 DAG size of output: 79 [2021-02-23 23:20:52,695 WARN L202 SmtUtils]: Spent 3.50 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:20:56,184 WARN L202 SmtUtils]: Spent 3.48 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:20:57,354 WARN L202 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 162 DAG size of output: 71 [2021-02-23 23:20:58,628 WARN L202 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 166 DAG size of output: 71 [2021-02-23 23:21:02,015 WARN L202 SmtUtils]: Spent 3.38 s on a formula simplification. DAG size of input: 289 DAG size of output: 91 [2021-02-23 23:21:05,536 WARN L202 SmtUtils]: Spent 3.51 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:21:07,331 WARN L202 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 220 DAG size of output: 78 [2021-02-23 23:21:08,714 WARN L202 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 208 DAG size of output: 73 [2021-02-23 23:21:09,806 WARN L202 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 150 DAG size of output: 60 [2021-02-23 23:21:11,173 WARN L202 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 208 DAG size of output: 73 [2021-02-23 23:21:14,551 WARN L202 SmtUtils]: Spent 3.37 s on a formula simplification. DAG size of input: 289 DAG size of output: 91 [2021-02-23 23:21:15,668 WARN L202 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 150 DAG size of output: 60 [2021-02-23 23:21:18,959 WARN L202 SmtUtils]: Spent 3.28 s on a formula simplification. DAG size of input: 287 DAG size of output: 92 [2021-02-23 23:21:22,235 WARN L202 SmtUtils]: Spent 3.27 s on a formula simplification. DAG size of input: 287 DAG size of output: 92 [2021-02-23 23:21:24,674 WARN L202 SmtUtils]: Spent 2.43 s on a formula simplification. DAG size of input: 241 DAG size of output: 80 [2021-02-23 23:21:26,169 WARN L202 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 176 DAG size of output: 78 [2021-02-23 23:21:29,702 WARN L202 SmtUtils]: Spent 3.52 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:21:30,984 WARN L202 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 164 DAG size of output: 70 [2021-02-23 23:21:34,523 WARN L202 SmtUtils]: Spent 3.53 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:21:35,701 WARN L202 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 164 DAG size of output: 72 [2021-02-23 23:21:37,115 WARN L202 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 167 DAG size of output: 75 [2021-02-23 23:21:39,219 WARN L202 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 176 DAG size of output: 79 [2021-02-23 23:21:40,479 WARN L202 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 213 DAG size of output: 73 [2021-02-23 23:21:44,020 WARN L202 SmtUtils]: Spent 3.53 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:21:45,343 WARN L202 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 167 DAG size of output: 70 [2021-02-23 23:21:46,698 WARN L202 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 212 DAG size of output: 74 [2021-02-23 23:21:50,208 WARN L202 SmtUtils]: Spent 3.50 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:21:51,691 WARN L202 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 217 DAG size of output: 74 [2021-02-23 23:21:53,521 WARN L202 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 190 DAG size of output: 79 [2021-02-23 23:21:55,624 WARN L202 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 220 DAG size of output: 78 [2021-02-23 23:21:58,929 WARN L202 SmtUtils]: Spent 3.30 s on a formula simplification. DAG size of input: 287 DAG size of output: 92 [2021-02-23 23:22:00,278 WARN L202 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 208 DAG size of output: 73 [2021-02-23 23:22:01,615 WARN L202 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 208 DAG size of output: 73 [2021-02-23 23:22:02,970 WARN L202 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 171 DAG size of output: 75 [2021-02-23 23:22:04,262 WARN L202 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 169 DAG size of output: 73 [2021-02-23 23:22:07,618 WARN L202 SmtUtils]: Spent 3.35 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:22:08,869 WARN L202 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 167 DAG size of output: 74 [2021-02-23 23:22:10,036 WARN L202 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 163 DAG size of output: 71 [2021-02-23 23:22:11,175 WARN L202 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 163 DAG size of output: 71 [2021-02-23 23:22:12,593 WARN L202 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 172 DAG size of output: 74 [2021-02-23 23:22:14,844 WARN L202 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 184 DAG size of output: 88 [2021-02-23 23:22:16,158 WARN L202 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 213 DAG size of output: 75 [2021-02-23 23:22:17,632 WARN L202 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 215 DAG size of output: 76 [2021-02-23 23:22:18,842 WARN L202 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 213 DAG size of output: 73 [2021-02-23 23:22:20,174 WARN L202 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 172 DAG size of output: 77 [2021-02-23 23:22:21,311 WARN L202 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 161 DAG size of output: 69 [2021-02-23 23:22:23,358 WARN L202 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 221 DAG size of output: 78 [2021-02-23 23:22:26,742 WARN L202 SmtUtils]: Spent 3.37 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:22:28,649 WARN L202 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 227 DAG size of output: 82 [2021-02-23 23:22:29,904 WARN L202 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 171 DAG size of output: 70 [2021-02-23 23:22:31,155 WARN L202 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 168 DAG size of output: 75 [2021-02-23 23:22:32,575 WARN L202 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 215 DAG size of output: 74 [2021-02-23 23:22:33,742 WARN L202 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 163 DAG size of output: 71 [2021-02-23 23:22:35,205 WARN L202 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 177 DAG size of output: 76 [2021-02-23 23:22:38,599 WARN L202 SmtUtils]: Spent 3.38 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:22:40,077 WARN L202 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 215 DAG size of output: 76 [2021-02-23 23:22:43,471 WARN L202 SmtUtils]: Spent 3.38 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:22:44,699 WARN L202 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 213 DAG size of output: 73 [2021-02-23 23:22:46,041 WARN L202 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 208 DAG size of output: 73 [2021-02-23 23:22:47,381 WARN L202 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 208 DAG size of output: 73 [2021-02-23 23:22:50,607 WARN L202 SmtUtils]: Spent 3.22 s on a formula simplification. DAG size of input: 287 DAG size of output: 92 [2021-02-23 23:22:51,691 WARN L202 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 210 DAG size of output: 74 [2021-02-23 23:22:54,932 WARN L202 SmtUtils]: Spent 3.23 s on a formula simplification. DAG size of input: 287 DAG size of output: 92 [2021-02-23 23:22:56,622 WARN L202 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 217 DAG size of output: 78 [2021-02-23 23:23:00,031 WARN L202 SmtUtils]: Spent 3.40 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:23:03,443 WARN L202 SmtUtils]: Spent 3.40 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:23:04,621 WARN L202 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 163 DAG size of output: 71 [2021-02-23 23:23:05,849 WARN L202 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 213 DAG size of output: 73 [2021-02-23 23:23:07,253 WARN L202 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 171 DAG size of output: 77 [2021-02-23 23:23:08,550 WARN L202 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 215 DAG size of output: 73 [2021-02-23 23:23:09,697 WARN L202 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 163 DAG size of output: 69 [2021-02-23 23:23:13,119 WARN L202 SmtUtils]: Spent 3.41 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:23:14,484 WARN L202 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 208 DAG size of output: 73 [2021-02-23 23:23:17,727 WARN L202 SmtUtils]: Spent 3.23 s on a formula simplification. DAG size of input: 287 DAG size of output: 92 [2021-02-23 23:23:21,013 WARN L202 SmtUtils]: Spent 3.28 s on a formula simplification. DAG size of input: 289 DAG size of output: 91 [2021-02-23 23:23:24,265 WARN L202 SmtUtils]: Spent 3.24 s on a formula simplification. DAG size of input: 287 DAG size of output: 92 [2021-02-23 23:23:25,479 WARN L202 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 211 DAG size of output: 75 [2021-02-23 23:23:28,740 WARN L202 SmtUtils]: Spent 3.25 s on a formula simplification. DAG size of input: 287 DAG size of output: 92 [2021-02-23 23:23:30,109 WARN L202 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 208 DAG size of output: 73 [2021-02-23 23:23:31,326 WARN L202 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 211 DAG size of output: 75 [2021-02-23 23:23:32,697 WARN L202 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 208 DAG size of output: 73 [2021-02-23 23:23:35,961 WARN L202 SmtUtils]: Spent 3.25 s on a formula simplification. DAG size of input: 287 DAG size of output: 92 [2021-02-23 23:23:37,059 WARN L202 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 210 DAG size of output: 74 [2021-02-23 23:23:39,097 WARN L202 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 220 DAG size of output: 78 [2021-02-23 23:23:40,790 WARN L202 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 215 DAG size of output: 77 [2021-02-23 23:23:42,912 WARN L202 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 244 DAG size of output: 80 [2021-02-23 23:23:44,083 WARN L202 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 163 DAG size of output: 71 [2021-02-23 23:23:45,619 WARN L202 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 226 DAG size of output: 76 [2021-02-23 23:23:46,812 WARN L202 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 165 DAG size of output: 73 [2021-02-23 23:23:50,248 WARN L202 SmtUtils]: Spent 3.43 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:23:51,706 WARN L202 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 167 DAG size of output: 79 [2021-02-23 23:23:53,079 WARN L202 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 208 DAG size of output: 73 [2021-02-23 23:23:54,240 WARN L202 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 165 DAG size of output: 71 [2021-02-23 23:23:55,392 WARN L202 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 163 DAG size of output: 69 [2021-02-23 23:23:58,836 WARN L202 SmtUtils]: Spent 3.43 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:23:59,938 WARN L202 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 210 DAG size of output: 74 [2021-02-23 23:24:03,223 WARN L202 SmtUtils]: Spent 3.28 s on a formula simplification. DAG size of input: 287 DAG size of output: 92 [2021-02-23 23:24:06,551 WARN L202 SmtUtils]: Spent 3.32 s on a formula simplification. DAG size of input: 289 DAG size of output: 91 [2021-02-23 23:24:07,197 WARN L202 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 64 [2021-02-23 23:24:08,339 WARN L202 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 150 DAG size of output: 60 [2021-02-23 23:24:09,376 WARN L202 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 164 DAG size of output: 73 [2021-02-23 23:24:11,058 WARN L202 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 215 DAG size of output: 77 [2021-02-23 23:24:12,204 WARN L202 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 161 DAG size of output: 67 [2021-02-23 23:24:13,509 WARN L202 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 213 DAG size of output: 75 [2021-02-23 23:24:14,837 WARN L202 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 175 DAG size of output: 76 [2021-02-23 23:24:16,288 WARN L202 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 172 DAG size of output: 75 [2021-02-23 23:24:19,762 WARN L202 SmtUtils]: Spent 3.46 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:24:21,076 WARN L202 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 169 DAG size of output: 75 [2021-02-23 23:24:24,546 WARN L202 SmtUtils]: Spent 3.46 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:24:25,705 WARN L202 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 163 DAG size of output: 69 [2021-02-23 23:24:28,047 WARN L202 SmtUtils]: Spent 2.33 s on a formula simplification. DAG size of input: 182 DAG size of output: 84 [2021-02-23 23:24:31,523 WARN L202 SmtUtils]: Spent 3.47 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:24:32,925 WARN L202 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 162 DAG size of output: 72 [2021-02-23 23:24:34,501 WARN L202 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 216 DAG size of output: 75 [2021-02-23 23:24:35,884 WARN L202 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 172 DAG size of output: 78 [2021-02-23 23:24:37,134 WARN L202 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 166 DAG size of output: 76 [2021-02-23 23:24:38,450 WARN L202 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 166 DAG size of output: 71 [2021-02-23 23:24:41,938 WARN L202 SmtUtils]: Spent 3.48 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:24:43,323 WARN L202 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 166 DAG size of output: 72 [2021-02-23 23:24:44,933 WARN L202 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 217 DAG size of output: 76 [2021-02-23 23:24:46,405 WARN L202 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 176 DAG size of output: 75 [2021-02-23 23:24:47,735 WARN L202 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 167 DAG size of output: 76 [2021-02-23 23:24:49,138 WARN L202 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 217 DAG size of output: 75 [2021-02-23 23:24:50,309 WARN L202 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 163 DAG size of output: 69 [2021-02-23 23:24:50,962 WARN L202 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 64 [2021-02-23 23:24:54,458 WARN L202 SmtUtils]: Spent 3.49 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:24:55,788 WARN L202 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 165 DAG size of output: 72 [2021-02-23 23:24:57,188 WARN L202 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 167 DAG size of output: 77 [2021-02-23 23:24:57,848 WARN L202 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 64 [2021-02-23 23:24:59,113 WARN L202 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 213 DAG size of output: 73 [2021-02-23 23:25:00,354 WARN L202 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 162 DAG size of output: 71 [2021-02-23 23:25:01,779 WARN L202 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 166 DAG size of output: 76 [2021-02-23 23:25:02,433 WARN L202 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 64 [2021-02-23 23:25:03,962 WARN L202 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 170 DAG size of output: 75 [2021-02-23 23:25:06,110 WARN L202 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 183 DAG size of output: 78 [2021-02-23 23:25:09,620 WARN L202 SmtUtils]: Spent 3.50 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:25:11,059 WARN L202 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 170 DAG size of output: 75 [2021-02-23 23:25:12,257 WARN L202 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 166 DAG size of output: 72 [2021-02-23 23:25:13,671 WARN L202 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 172 DAG size of output: 77 [2021-02-23 23:25:16,244 WARN L202 SmtUtils]: Spent 2.57 s on a formula simplification. DAG size of input: 229 DAG size of output: 80 [2021-02-23 23:25:18,112 WARN L202 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 220 DAG size of output: 77 [2021-02-23 23:25:19,636 WARN L202 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 215 DAG size of output: 76 [2021-02-23 23:25:21,210 WARN L202 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 178 DAG size of output: 80 [2021-02-23 23:25:22,500 WARN L202 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 164 DAG size of output: 69 [2021-02-23 23:25:23,899 WARN L202 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 208 DAG size of output: 73 [2021-02-23 23:25:27,247 WARN L202 SmtUtils]: Spent 3.34 s on a formula simplification. DAG size of input: 287 DAG size of output: 92 [2021-02-23 23:25:30,645 WARN L202 SmtUtils]: Spent 3.39 s on a formula simplification. DAG size of input: 289 DAG size of output: 91 [2021-02-23 23:25:33,991 WARN L202 SmtUtils]: Spent 3.34 s on a formula simplification. DAG size of input: 287 DAG size of output: 92 [2021-02-23 23:25:35,289 WARN L202 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 211 DAG size of output: 75 [2021-02-23 23:25:36,423 WARN L202 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 210 DAG size of output: 74 [2021-02-23 23:25:37,845 WARN L202 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 208 DAG size of output: 73 [2021-02-23 23:25:41,214 WARN L202 SmtUtils]: Spent 3.36 s on a formula simplification. DAG size of input: 287 DAG size of output: 92 [2021-02-23 23:25:42,621 WARN L202 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 166 DAG size of output: 72 [2021-02-23 23:25:44,581 WARN L202 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 207 DAG size of output: 79 [2021-02-23 23:25:45,837 WARN L202 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 164 DAG size of output: 72 [2021-02-23 23:25:46,894 WARN L202 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 164 DAG size of output: 73 [2021-02-23 23:25:48,305 WARN L202 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 166 DAG size of output: 75 [2021-02-23 23:25:51,853 WARN L202 SmtUtils]: Spent 3.54 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:25:53,200 WARN L202 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 213 DAG size of output: 75 [2021-02-23 23:25:56,748 WARN L202 SmtUtils]: Spent 3.54 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:25:58,752 WARN L202 SmtUtils]: Spent 2.00 s on a formula simplification. DAG size of input: 171 DAG size of output: 77 [2021-02-23 23:25:59,989 WARN L202 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 165 DAG size of output: 73 [2021-02-23 23:26:01,200 WARN L202 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 163 DAG size of output: 71 [2021-02-23 23:26:02,720 WARN L202 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 167 DAG size of output: 77 [2021-02-23 23:26:04,116 WARN L202 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 181 DAG size of output: 75 [2021-02-23 23:26:05,261 WARN L202 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 210 DAG size of output: 74 [2021-02-23 23:26:06,465 WARN L202 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 162 DAG size of output: 69 [2021-02-23 23:26:09,913 WARN L202 SmtUtils]: Spent 3.44 s on a formula simplification. DAG size of input: 289 DAG size of output: 91 [2021-02-23 23:26:13,504 WARN L202 SmtUtils]: Spent 3.58 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:26:14,746 WARN L202 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 164 DAG size of output: 71 [2021-02-23 23:26:16,336 WARN L202 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 170 DAG size of output: 75 [2021-02-23 23:26:17,436 WARN L202 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 164 DAG size of output: 73 [2021-02-23 23:26:21,029 WARN L202 SmtUtils]: Spent 3.58 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:26:22,438 WARN L202 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 217 DAG size of output: 74 [2021-02-23 23:26:23,874 WARN L202 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 168 DAG size of output: 73 [2021-02-23 23:26:25,896 WARN L202 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 172 DAG size of output: 78 [2021-02-23 23:26:27,126 WARN L202 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 162 DAG size of output: 69 [2021-02-23 23:26:28,504 WARN L202 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 166 DAG size of output: 70 [2021-02-23 23:26:29,999 WARN L202 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 213 DAG size of output: 74 [2021-02-23 23:26:31,483 WARN L202 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 173 DAG size of output: 75 [2021-02-23 23:26:35,100 WARN L202 SmtUtils]: Spent 3.61 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:26:36,384 WARN L202 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 166 DAG size of output: 73 [2021-02-23 23:26:37,799 WARN L202 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 167 DAG size of output: 74 [2021-02-23 23:26:39,358 WARN L202 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 173 DAG size of output: 77 [2021-02-23 23:26:42,872 WARN L202 SmtUtils]: Spent 3.50 s on a formula simplification. DAG size of input: 289 DAG size of output: 91 [2021-02-23 23:26:46,504 WARN L202 SmtUtils]: Spent 3.62 s on a formula simplification. DAG size of input: 291 DAG size of output: 93 [2021-02-23 23:26:48,060 WARN L202 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 217 DAG size of output: 74