/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 23:15:37,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 23:15:37,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 23:15:37,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 23:15:37,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 23:15:37,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 23:15:37,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 23:15:37,833 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 23:15:37,835 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 23:15:37,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 23:15:37,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 23:15:37,842 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 23:15:37,843 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 23:15:37,846 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 23:15:37,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 23:15:37,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 23:15:37,854 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 23:15:37,857 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 23:15:37,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 23:15:37,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 23:15:37,872 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 23:15:37,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 23:15:37,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 23:15:37,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 23:15:37,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 23:15:37,889 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 23:15:37,890 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 23:15:37,891 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 23:15:37,891 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 23:15:37,894 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 23:15:37,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 23:15:37,896 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 23:15:37,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 23:15:37,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 23:15:37,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 23:15:37,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 23:15:37,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 23:15:37,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 23:15:37,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 23:15:37,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 23:15:37,905 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 23:15:37,906 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 23:15:37,923 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 23:15:37,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 23:15:37,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 23:15:37,927 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 23:15:37,927 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 23:15:37,927 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 23:15:37,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 23:15:37,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 23:15:37,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 23:15:37,928 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 23:15:37,930 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 23:15:37,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 23:15:37,930 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 23:15:37,931 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 23:15:37,931 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 23:15:37,931 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 23:15:37,932 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 23:15:37,932 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 23:15:37,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 23:15:37,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 23:15:37,932 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 23:15:37,933 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 23:15:37,933 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-09-04 23:15:38,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 23:15:38,454 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 23:15:38,458 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 23:15:38,461 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 23:15:38,461 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 23:15:38,463 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2020-09-04 23:15:38,569 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1459c090/7541a44abef2477e931ff635d2cb0a19/FLAG07f282637 [2020-09-04 23:15:39,236 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 23:15:39,237 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2020-09-04 23:15:39,249 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1459c090/7541a44abef2477e931ff635d2cb0a19/FLAG07f282637 [2020-09-04 23:15:39,519 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1459c090/7541a44abef2477e931ff635d2cb0a19 [2020-09-04 23:15:39,537 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 23:15:39,540 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 23:15:39,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 23:15:39,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 23:15:39,550 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 23:15:39,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:15:39" (1/1) ... [2020-09-04 23:15:39,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1631c718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:39, skipping insertion in model container [2020-09-04 23:15:39,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:15:39" (1/1) ... [2020-09-04 23:15:39,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 23:15:39,605 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 23:15:39,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:15:39,980 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 23:15:40,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:15:40,186 INFO L208 MainTranslator]: Completed translation [2020-09-04 23:15:40,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:40 WrapperNode [2020-09-04 23:15:40,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 23:15:40,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 23:15:40,188 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 23:15:40,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 23:15:40,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:40" (1/1) ... [2020-09-04 23:15:40,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:40" (1/1) ... [2020-09-04 23:15:40,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:40" (1/1) ... [2020-09-04 23:15:40,225 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:40" (1/1) ... [2020-09-04 23:15:40,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:40" (1/1) ... [2020-09-04 23:15:40,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:40" (1/1) ... [2020-09-04 23:15:40,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:40" (1/1) ... [2020-09-04 23:15:40,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 23:15:40,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 23:15:40,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 23:15:40,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 23:15:40,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 23:15:40,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 23:15:40,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 23:15:40,385 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 23:15:40,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 23:15:40,385 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2020-09-04 23:15:40,386 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-09-04 23:15:40,386 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 23:15:40,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 23:15:40,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 23:15:40,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 23:15:40,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 23:15:40,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 23:15:40,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 23:15:40,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 23:15:40,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 23:15:40,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 23:15:40,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 23:15:41,411 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 23:15:41,411 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 23:15:41,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:15:41 BoogieIcfgContainer [2020-09-04 23:15:41,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 23:15:41,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 23:15:41,424 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 23:15:41,431 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 23:15:41,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 11:15:39" (1/3) ... [2020-09-04 23:15:41,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f9284bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:15:41, skipping insertion in model container [2020-09-04 23:15:41,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:40" (2/3) ... [2020-09-04 23:15:41,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f9284bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:15:41, skipping insertion in model container [2020-09-04 23:15:41,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:15:41" (3/3) ... [2020-09-04 23:15:41,439 INFO L109 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lh-reducer.c [2020-09-04 23:15:41,453 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 23:15:41,466 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 23:15:41,488 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 23:15:41,517 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 23:15:41,517 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 23:15:41,518 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 23:15:41,518 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 23:15:41,518 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 23:15:41,518 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 23:15:41,518 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 23:15:41,519 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 23:15:41,545 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states. [2020-09-04 23:15:41,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-09-04 23:15:41,574 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:41,576 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:41,577 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:41,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:41,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1683722235, now seen corresponding path program 1 times [2020-09-04 23:15:41,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:41,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829189995] [2020-09-04 23:15:41,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:42,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:42,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:15:42,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829189995] [2020-09-04 23:15:42,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:15:42,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 23:15:42,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501267869] [2020-09-04 23:15:42,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 23:15:42,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:42,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 23:15:42,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 23:15:42,515 INFO L87 Difference]: Start difference. First operand 363 states. Second operand 5 states. [2020-09-04 23:15:43,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:43,552 INFO L93 Difference]: Finished difference Result 416 states and 424 transitions. [2020-09-04 23:15:43,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 23:15:43,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 317 [2020-09-04 23:15:43,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:43,578 INFO L225 Difference]: With dead ends: 416 [2020-09-04 23:15:43,602 INFO L226 Difference]: Without dead ends: 349 [2020-09-04 23:15:43,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-04 23:15:43,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-09-04 23:15:43,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 335. [2020-09-04 23:15:43,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-09-04 23:15:43,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 335 transitions. [2020-09-04 23:15:43,751 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 335 transitions. Word has length 317 [2020-09-04 23:15:43,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:43,753 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 335 transitions. [2020-09-04 23:15:43,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 23:15:43,753 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 335 transitions. [2020-09-04 23:15:43,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-09-04 23:15:43,761 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:43,762 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:43,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 23:15:43,763 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:43,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:43,763 INFO L82 PathProgramCache]: Analyzing trace with hash 346805738, now seen corresponding path program 1 times [2020-09-04 23:15:43,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:43,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942700097] [2020-09-04 23:15:43,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:44,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:44,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:44,308 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:15:44,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942700097] [2020-09-04 23:15:44,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:15:44,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-04 23:15:44,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141500504] [2020-09-04 23:15:44,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 23:15:44,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:44,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 23:15:44,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 23:15:44,313 INFO L87 Difference]: Start difference. First operand 335 states and 335 transitions. Second operand 6 states. [2020-09-04 23:15:45,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:45,479 INFO L93 Difference]: Finished difference Result 374 states and 374 transitions. [2020-09-04 23:15:45,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 23:15:45,481 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 334 [2020-09-04 23:15:45,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:45,491 INFO L225 Difference]: With dead ends: 374 [2020-09-04 23:15:45,495 INFO L226 Difference]: Without dead ends: 366 [2020-09-04 23:15:45,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-04 23:15:45,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2020-09-04 23:15:45,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 352. [2020-09-04 23:15:45,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-09-04 23:15:45,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 352 transitions. [2020-09-04 23:15:45,608 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 352 transitions. Word has length 334 [2020-09-04 23:15:45,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:45,611 INFO L479 AbstractCegarLoop]: Abstraction has 352 states and 352 transitions. [2020-09-04 23:15:45,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 23:15:45,612 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 352 transitions. [2020-09-04 23:15:45,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-09-04 23:15:45,624 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:45,624 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:45,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 23:15:45,625 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:45,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:45,627 INFO L82 PathProgramCache]: Analyzing trace with hash -461354021, now seen corresponding path program 2 times [2020-09-04 23:15:45,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:45,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942983175] [2020-09-04 23:15:45,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:46,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:46,312 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:15:46,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942983175] [2020-09-04 23:15:46,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:15:46,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-04 23:15:46,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790123082] [2020-09-04 23:15:46,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 23:15:46,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:46,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 23:15:46,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-04 23:15:46,336 INFO L87 Difference]: Start difference. First operand 352 states and 352 transitions. Second operand 7 states. [2020-09-04 23:15:47,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:47,399 INFO L93 Difference]: Finished difference Result 391 states and 391 transitions. [2020-09-04 23:15:47,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-04 23:15:47,400 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 351 [2020-09-04 23:15:47,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:47,403 INFO L225 Difference]: With dead ends: 391 [2020-09-04 23:15:47,404 INFO L226 Difference]: Without dead ends: 383 [2020-09-04 23:15:47,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-09-04 23:15:47,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-09-04 23:15:47,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 369. [2020-09-04 23:15:47,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2020-09-04 23:15:47,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 369 transitions. [2020-09-04 23:15:47,444 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 369 transitions. Word has length 351 [2020-09-04 23:15:47,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:47,445 INFO L479 AbstractCegarLoop]: Abstraction has 369 states and 369 transitions. [2020-09-04 23:15:47,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 23:15:47,446 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 369 transitions. [2020-09-04 23:15:47,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-09-04 23:15:47,453 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:47,453 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:47,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 23:15:47,454 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:47,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:47,455 INFO L82 PathProgramCache]: Analyzing trace with hash -254126582, now seen corresponding path program 3 times [2020-09-04 23:15:47,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:47,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896190432] [2020-09-04 23:15:47,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:47,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:47,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:47,948 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:15:47,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896190432] [2020-09-04 23:15:47,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:15:47,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-04 23:15:47,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336062513] [2020-09-04 23:15:47,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 23:15:47,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:47,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 23:15:47,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-04 23:15:47,952 INFO L87 Difference]: Start difference. First operand 369 states and 369 transitions. Second operand 8 states. [2020-09-04 23:15:49,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:49,144 INFO L93 Difference]: Finished difference Result 408 states and 408 transitions. [2020-09-04 23:15:49,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 23:15:49,145 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 368 [2020-09-04 23:15:49,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:49,148 INFO L225 Difference]: With dead ends: 408 [2020-09-04 23:15:49,148 INFO L226 Difference]: Without dead ends: 400 [2020-09-04 23:15:49,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-09-04 23:15:49,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-09-04 23:15:49,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 386. [2020-09-04 23:15:49,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-09-04 23:15:49,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 386 transitions. [2020-09-04 23:15:49,191 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 386 transitions. Word has length 368 [2020-09-04 23:15:49,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:49,193 INFO L479 AbstractCegarLoop]: Abstraction has 386 states and 386 transitions. [2020-09-04 23:15:49,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 23:15:49,193 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 386 transitions. [2020-09-04 23:15:49,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2020-09-04 23:15:49,201 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:49,201 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:49,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 23:15:49,202 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:49,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:49,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1386344517, now seen corresponding path program 4 times [2020-09-04 23:15:49,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:49,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970157348] [2020-09-04 23:15:49,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:49,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:49,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:49,672 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:15:49,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970157348] [2020-09-04 23:15:49,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:15:49,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-04 23:15:49,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113549524] [2020-09-04 23:15:49,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 23:15:49,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:49,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 23:15:49,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-04 23:15:49,677 INFO L87 Difference]: Start difference. First operand 386 states and 386 transitions. Second operand 9 states. [2020-09-04 23:15:50,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:50,943 INFO L93 Difference]: Finished difference Result 425 states and 425 transitions. [2020-09-04 23:15:50,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 23:15:50,944 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 385 [2020-09-04 23:15:50,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:50,947 INFO L225 Difference]: With dead ends: 425 [2020-09-04 23:15:50,948 INFO L226 Difference]: Without dead ends: 417 [2020-09-04 23:15:50,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-09-04 23:15:50,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-09-04 23:15:50,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 403. [2020-09-04 23:15:50,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-09-04 23:15:50,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 403 transitions. [2020-09-04 23:15:50,987 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 403 transitions. Word has length 385 [2020-09-04 23:15:50,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:50,988 INFO L479 AbstractCegarLoop]: Abstraction has 403 states and 403 transitions. [2020-09-04 23:15:50,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 23:15:50,988 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 403 transitions. [2020-09-04 23:15:50,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2020-09-04 23:15:50,992 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:50,992 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:50,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 23:15:50,993 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:50,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:50,993 INFO L82 PathProgramCache]: Analyzing trace with hash 2088816170, now seen corresponding path program 5 times [2020-09-04 23:15:50,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:50,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765783525] [2020-09-04 23:15:50,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:51,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:51,653 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:15:51,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765783525] [2020-09-04 23:15:51,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:15:51,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-04 23:15:51,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721039373] [2020-09-04 23:15:51,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 23:15:51,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:51,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 23:15:51,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-04 23:15:51,659 INFO L87 Difference]: Start difference. First operand 403 states and 403 transitions. Second operand 10 states. [2020-09-04 23:15:53,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:53,011 INFO L93 Difference]: Finished difference Result 442 states and 442 transitions. [2020-09-04 23:15:53,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-04 23:15:53,012 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 402 [2020-09-04 23:15:53,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:53,016 INFO L225 Difference]: With dead ends: 442 [2020-09-04 23:15:53,016 INFO L226 Difference]: Without dead ends: 434 [2020-09-04 23:15:53,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-09-04 23:15:53,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-09-04 23:15:53,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 420. [2020-09-04 23:15:53,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2020-09-04 23:15:53,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 420 transitions. [2020-09-04 23:15:53,057 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 420 transitions. Word has length 402 [2020-09-04 23:15:53,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:53,058 INFO L479 AbstractCegarLoop]: Abstraction has 420 states and 420 transitions. [2020-09-04 23:15:53,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 23:15:53,059 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 420 transitions. [2020-09-04 23:15:53,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2020-09-04 23:15:53,062 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:53,063 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:53,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 23:15:53,064 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:53,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:53,064 INFO L82 PathProgramCache]: Analyzing trace with hash 380820379, now seen corresponding path program 6 times [2020-09-04 23:15:53,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:53,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422603762] [2020-09-04 23:15:53,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:53,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:53,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:53,626 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 285 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:15:53,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422603762] [2020-09-04 23:15:53,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:15:53,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-04 23:15:53,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419459566] [2020-09-04 23:15:53,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 23:15:53,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:53,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 23:15:53,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-04 23:15:53,629 INFO L87 Difference]: Start difference. First operand 420 states and 420 transitions. Second operand 11 states. [2020-09-04 23:15:55,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:55,184 INFO L93 Difference]: Finished difference Result 459 states and 459 transitions. [2020-09-04 23:15:55,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 23:15:55,190 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 419 [2020-09-04 23:15:55,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:55,194 INFO L225 Difference]: With dead ends: 459 [2020-09-04 23:15:55,194 INFO L226 Difference]: Without dead ends: 451 [2020-09-04 23:15:55,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-09-04 23:15:55,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-09-04 23:15:55,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 437. [2020-09-04 23:15:55,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-09-04 23:15:55,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 437 transitions. [2020-09-04 23:15:55,258 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 437 transitions. Word has length 419 [2020-09-04 23:15:55,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:55,259 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 437 transitions. [2020-09-04 23:15:55,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 23:15:55,260 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 437 transitions. [2020-09-04 23:15:55,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2020-09-04 23:15:55,263 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:55,263 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:55,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 23:15:55,264 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:55,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:55,265 INFO L82 PathProgramCache]: Analyzing trace with hash 329334346, now seen corresponding path program 7 times [2020-09-04 23:15:55,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:55,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284784055] [2020-09-04 23:15:55,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:55,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:55,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:55,778 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:15:55,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284784055] [2020-09-04 23:15:55,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:15:55,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-04 23:15:55,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976315576] [2020-09-04 23:15:55,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 23:15:55,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:55,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 23:15:55,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-09-04 23:15:55,781 INFO L87 Difference]: Start difference. First operand 437 states and 437 transitions. Second operand 12 states. [2020-09-04 23:15:57,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:57,590 INFO L93 Difference]: Finished difference Result 476 states and 476 transitions. [2020-09-04 23:15:57,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-04 23:15:57,593 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 436 [2020-09-04 23:15:57,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:57,596 INFO L225 Difference]: With dead ends: 476 [2020-09-04 23:15:57,596 INFO L226 Difference]: Without dead ends: 468 [2020-09-04 23:15:57,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2020-09-04 23:15:57,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2020-09-04 23:15:57,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 454. [2020-09-04 23:15:57,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2020-09-04 23:15:57,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 454 transitions. [2020-09-04 23:15:57,634 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 454 transitions. Word has length 436 [2020-09-04 23:15:57,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:57,635 INFO L479 AbstractCegarLoop]: Abstraction has 454 states and 454 transitions. [2020-09-04 23:15:57,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 23:15:57,635 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 454 transitions. [2020-09-04 23:15:57,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2020-09-04 23:15:57,638 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:57,639 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:57,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 23:15:57,639 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:57,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:57,640 INFO L82 PathProgramCache]: Analyzing trace with hash 146583419, now seen corresponding path program 8 times [2020-09-04 23:15:57,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:57,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936187873] [2020-09-04 23:15:57,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:58,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:58,241 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 0 proven. 516 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:15:58,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936187873] [2020-09-04 23:15:58,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:15:58,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-04 23:15:58,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679659004] [2020-09-04 23:15:58,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 23:15:58,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:58,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 23:15:58,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-09-04 23:15:58,245 INFO L87 Difference]: Start difference. First operand 454 states and 454 transitions. Second operand 13 states. [2020-09-04 23:16:00,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:16:00,130 INFO L93 Difference]: Finished difference Result 493 states and 493 transitions. [2020-09-04 23:16:00,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 23:16:00,131 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 453 [2020-09-04 23:16:00,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:16:00,135 INFO L225 Difference]: With dead ends: 493 [2020-09-04 23:16:00,136 INFO L226 Difference]: Without dead ends: 485 [2020-09-04 23:16:00,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2020-09-04 23:16:00,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-09-04 23:16:00,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 471. [2020-09-04 23:16:00,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2020-09-04 23:16:00,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 471 transitions. [2020-09-04 23:16:00,176 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 471 transitions. Word has length 453 [2020-09-04 23:16:00,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:16:00,177 INFO L479 AbstractCegarLoop]: Abstraction has 471 states and 471 transitions. [2020-09-04 23:16:00,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 23:16:00,177 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 471 transitions. [2020-09-04 23:16:00,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2020-09-04 23:16:00,181 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:16:00,182 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:16:00,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 23:16:00,182 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:16:00,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:16:00,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1849842070, now seen corresponding path program 9 times [2020-09-04 23:16:00,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:16:00,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358365294] [2020-09-04 23:16:00,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:16:00,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:00,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:16:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:00,813 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 0 proven. 657 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:16:00,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358365294] [2020-09-04 23:16:00,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:16:00,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-04 23:16:00,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035410046] [2020-09-04 23:16:00,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 23:16:00,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:16:00,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 23:16:00,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-09-04 23:16:00,816 INFO L87 Difference]: Start difference. First operand 471 states and 471 transitions. Second operand 14 states. [2020-09-04 23:16:02,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:16:02,901 INFO L93 Difference]: Finished difference Result 510 states and 510 transitions. [2020-09-04 23:16:02,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 23:16:02,902 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 470 [2020-09-04 23:16:02,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:16:02,906 INFO L225 Difference]: With dead ends: 510 [2020-09-04 23:16:02,907 INFO L226 Difference]: Without dead ends: 502 [2020-09-04 23:16:02,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2020-09-04 23:16:02,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-09-04 23:16:02,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 488. [2020-09-04 23:16:02,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 488 states. [2020-09-04 23:16:02,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 488 transitions. [2020-09-04 23:16:02,949 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 488 transitions. Word has length 470 [2020-09-04 23:16:02,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:16:02,950 INFO L479 AbstractCegarLoop]: Abstraction has 488 states and 488 transitions. [2020-09-04 23:16:02,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 23:16:02,950 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 488 transitions. [2020-09-04 23:16:02,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2020-09-04 23:16:02,954 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:16:02,954 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:16:02,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 23:16:02,955 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:16:02,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:16:02,955 INFO L82 PathProgramCache]: Analyzing trace with hash -600208549, now seen corresponding path program 10 times [2020-09-04 23:16:02,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:16:02,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721425053] [2020-09-04 23:16:02,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:16:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:03,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:16:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:03,677 INFO L134 CoverageAnalysis]: Checked inductivity of 815 backedges. 0 proven. 815 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:16:03,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721425053] [2020-09-04 23:16:03,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:16:03,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-04 23:16:03,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063166255] [2020-09-04 23:16:03,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-04 23:16:03,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:16:03,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-04 23:16:03,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-04 23:16:03,681 INFO L87 Difference]: Start difference. First operand 488 states and 488 transitions. Second operand 15 states. [2020-09-04 23:16:05,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:16:05,914 INFO L93 Difference]: Finished difference Result 527 states and 527 transitions. [2020-09-04 23:16:05,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-04 23:16:05,915 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 487 [2020-09-04 23:16:05,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:16:05,919 INFO L225 Difference]: With dead ends: 527 [2020-09-04 23:16:05,920 INFO L226 Difference]: Without dead ends: 519 [2020-09-04 23:16:05,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2020-09-04 23:16:05,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2020-09-04 23:16:05,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 505. [2020-09-04 23:16:05,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2020-09-04 23:16:05,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 505 transitions. [2020-09-04 23:16:05,978 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 505 transitions. Word has length 487 [2020-09-04 23:16:05,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:16:05,980 INFO L479 AbstractCegarLoop]: Abstraction has 505 states and 505 transitions. [2020-09-04 23:16:05,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-04 23:16:05,980 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 505 transitions. [2020-09-04 23:16:05,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2020-09-04 23:16:05,985 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:16:05,986 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:16:05,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 23:16:05,987 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:16:05,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:16:05,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1909982858, now seen corresponding path program 11 times [2020-09-04 23:16:05,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:16:05,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027187727] [2020-09-04 23:16:05,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:16:06,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:06,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:16:06,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:06,827 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:16:06,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027187727] [2020-09-04 23:16:06,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:16:06,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-04 23:16:06,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755472617] [2020-09-04 23:16:06,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-04 23:16:06,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:16:06,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-04 23:16:06,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-09-04 23:16:06,830 INFO L87 Difference]: Start difference. First operand 505 states and 505 transitions. Second operand 16 states. [2020-09-04 23:16:09,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:16:09,231 INFO L93 Difference]: Finished difference Result 544 states and 544 transitions. [2020-09-04 23:16:09,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-04 23:16:09,232 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 504 [2020-09-04 23:16:09,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:16:09,235 INFO L225 Difference]: With dead ends: 544 [2020-09-04 23:16:09,235 INFO L226 Difference]: Without dead ends: 536 [2020-09-04 23:16:09,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2020-09-04 23:16:09,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2020-09-04 23:16:09,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 522. [2020-09-04 23:16:09,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2020-09-04 23:16:09,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 522 transitions. [2020-09-04 23:16:09,285 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 522 transitions. Word has length 504 [2020-09-04 23:16:09,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:16:09,286 INFO L479 AbstractCegarLoop]: Abstraction has 522 states and 522 transitions. [2020-09-04 23:16:09,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-04 23:16:09,286 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 522 transitions. [2020-09-04 23:16:09,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2020-09-04 23:16:09,291 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:16:09,291 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:16:09,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-04 23:16:09,292 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:16:09,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:16:09,293 INFO L82 PathProgramCache]: Analyzing trace with hash 979857211, now seen corresponding path program 12 times [2020-09-04 23:16:09,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:16:09,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533549307] [2020-09-04 23:16:09,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:16:09,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:09,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:16:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:10,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1182 backedges. 0 proven. 1182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:16:10,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533549307] [2020-09-04 23:16:10,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:16:10,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-04 23:16:10,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82454108] [2020-09-04 23:16:10,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-04 23:16:10,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:16:10,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-04 23:16:10,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-09-04 23:16:10,245 INFO L87 Difference]: Start difference. First operand 522 states and 522 transitions. Second operand 17 states. [2020-09-04 23:16:12,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:16:12,935 INFO L93 Difference]: Finished difference Result 561 states and 561 transitions. [2020-09-04 23:16:12,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-04 23:16:12,936 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 521 [2020-09-04 23:16:12,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:16:12,940 INFO L225 Difference]: With dead ends: 561 [2020-09-04 23:16:12,940 INFO L226 Difference]: Without dead ends: 553 [2020-09-04 23:16:12,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=87, Invalid=843, Unknown=0, NotChecked=0, Total=930 [2020-09-04 23:16:12,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2020-09-04 23:16:12,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 539. [2020-09-04 23:16:12,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2020-09-04 23:16:12,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 539 transitions. [2020-09-04 23:16:12,988 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 539 transitions. Word has length 521 [2020-09-04 23:16:12,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:16:12,989 INFO L479 AbstractCegarLoop]: Abstraction has 539 states and 539 transitions. [2020-09-04 23:16:12,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-04 23:16:12,990 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 539 transitions. [2020-09-04 23:16:12,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2020-09-04 23:16:12,994 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:16:12,994 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:16:12,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-04 23:16:12,995 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:16:12,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:16:12,995 INFO L82 PathProgramCache]: Analyzing trace with hash -294494550, now seen corresponding path program 13 times [2020-09-04 23:16:12,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:16:12,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993765246] [2020-09-04 23:16:12,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:16:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:13,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:16:13,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:13,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 0 proven. 1391 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:16:13,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993765246] [2020-09-04 23:16:13,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:16:13,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-04 23:16:13,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538538666] [2020-09-04 23:16:13,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-04 23:16:13,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:16:13,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-04 23:16:13,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-09-04 23:16:13,833 INFO L87 Difference]: Start difference. First operand 539 states and 539 transitions. Second operand 18 states. [2020-09-04 23:16:16,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:16:16,749 INFO L93 Difference]: Finished difference Result 578 states and 578 transitions. [2020-09-04 23:16:16,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-04 23:16:16,750 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 538 [2020-09-04 23:16:16,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:16:16,753 INFO L225 Difference]: With dead ends: 578 [2020-09-04 23:16:16,753 INFO L226 Difference]: Without dead ends: 570 [2020-09-04 23:16:16,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=93, Invalid=963, Unknown=0, NotChecked=0, Total=1056 [2020-09-04 23:16:16,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-09-04 23:16:16,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 556. [2020-09-04 23:16:16,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-09-04 23:16:16,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 556 transitions. [2020-09-04 23:16:16,804 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 556 transitions. Word has length 538 [2020-09-04 23:16:16,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:16:16,805 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 556 transitions. [2020-09-04 23:16:16,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-04 23:16:16,805 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 556 transitions. [2020-09-04 23:16:16,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2020-09-04 23:16:16,810 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:16:16,810 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:16:16,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-04 23:16:16,811 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:16:16,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:16:16,811 INFO L82 PathProgramCache]: Analyzing trace with hash -50046181, now seen corresponding path program 14 times [2020-09-04 23:16:16,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:16:16,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805713126] [2020-09-04 23:16:16,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:16:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:17,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:16:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:18,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1617 backedges. 0 proven. 1617 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:16:18,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805713126] [2020-09-04 23:16:18,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:16:18,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-04 23:16:18,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459563343] [2020-09-04 23:16:18,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-04 23:16:18,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:16:18,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-04 23:16:18,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-09-04 23:16:18,239 INFO L87 Difference]: Start difference. First operand 556 states and 556 transitions. Second operand 19 states. [2020-09-04 23:16:21,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:16:21,574 INFO L93 Difference]: Finished difference Result 595 states and 595 transitions. [2020-09-04 23:16:21,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-04 23:16:21,575 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 555 [2020-09-04 23:16:21,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:16:21,580 INFO L225 Difference]: With dead ends: 595 [2020-09-04 23:16:21,580 INFO L226 Difference]: Without dead ends: 587 [2020-09-04 23:16:21,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=99, Invalid=1091, Unknown=0, NotChecked=0, Total=1190 [2020-09-04 23:16:21,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2020-09-04 23:16:21,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 573. [2020-09-04 23:16:21,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 573 states. [2020-09-04 23:16:21,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 573 transitions. [2020-09-04 23:16:21,647 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 573 transitions. Word has length 555 [2020-09-04 23:16:21,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:16:21,648 INFO L479 AbstractCegarLoop]: Abstraction has 573 states and 573 transitions. [2020-09-04 23:16:21,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-04 23:16:21,648 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 573 transitions. [2020-09-04 23:16:21,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2020-09-04 23:16:21,654 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:16:21,654 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:16:21,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-04 23:16:21,655 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:16:21,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:16:21,655 INFO L82 PathProgramCache]: Analyzing trace with hash 562998986, now seen corresponding path program 15 times [2020-09-04 23:16:21,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:16:21,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151034505] [2020-09-04 23:16:21,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:16:21,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:22,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:16:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:22,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 1860 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:16:22,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151034505] [2020-09-04 23:16:22,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:16:22,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-04 23:16:22,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813547270] [2020-09-04 23:16:22,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-04 23:16:22,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:16:22,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-04 23:16:22,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-09-04 23:16:22,630 INFO L87 Difference]: Start difference. First operand 573 states and 573 transitions. Second operand 20 states. [2020-09-04 23:16:26,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:16:26,100 INFO L93 Difference]: Finished difference Result 612 states and 612 transitions. [2020-09-04 23:16:26,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-04 23:16:26,101 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 572 [2020-09-04 23:16:26,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:16:26,105 INFO L225 Difference]: With dead ends: 612 [2020-09-04 23:16:26,106 INFO L226 Difference]: Without dead ends: 604 [2020-09-04 23:16:26,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=105, Invalid=1227, Unknown=0, NotChecked=0, Total=1332 [2020-09-04 23:16:26,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2020-09-04 23:16:26,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 590. [2020-09-04 23:16:26,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-09-04 23:16:26,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 590 transitions. [2020-09-04 23:16:26,156 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 590 transitions. Word has length 572 [2020-09-04 23:16:26,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:16:26,157 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 590 transitions. [2020-09-04 23:16:26,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-04 23:16:26,157 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 590 transitions. [2020-09-04 23:16:26,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2020-09-04 23:16:26,163 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:16:26,163 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:16:26,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-04 23:16:26,164 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:16:26,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:16:26,164 INFO L82 PathProgramCache]: Analyzing trace with hash 240013051, now seen corresponding path program 16 times [2020-09-04 23:16:26,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:16:26,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184695425] [2020-09-04 23:16:26,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:16:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:26,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:16:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:27,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2120 backedges. 0 proven. 2120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:16:27,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184695425] [2020-09-04 23:16:27,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:16:27,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-04 23:16:27,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262468146] [2020-09-04 23:16:27,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-04 23:16:27,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:16:27,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-04 23:16:27,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-09-04 23:16:27,574 INFO L87 Difference]: Start difference. First operand 590 states and 590 transitions. Second operand 21 states. [2020-09-04 23:16:31,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:16:31,381 INFO L93 Difference]: Finished difference Result 629 states and 629 transitions. [2020-09-04 23:16:31,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-04 23:16:31,382 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 589 [2020-09-04 23:16:31,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:16:31,386 INFO L225 Difference]: With dead ends: 629 [2020-09-04 23:16:31,387 INFO L226 Difference]: Without dead ends: 621 [2020-09-04 23:16:31,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=111, Invalid=1371, Unknown=0, NotChecked=0, Total=1482 [2020-09-04 23:16:31,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2020-09-04 23:16:31,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 607. [2020-09-04 23:16:31,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2020-09-04 23:16:31,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 607 transitions. [2020-09-04 23:16:31,440 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 607 transitions. Word has length 589 [2020-09-04 23:16:31,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:16:31,441 INFO L479 AbstractCegarLoop]: Abstraction has 607 states and 607 transitions. [2020-09-04 23:16:31,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-04 23:16:31,441 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 607 transitions. [2020-09-04 23:16:31,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2020-09-04 23:16:31,446 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:16:31,447 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:16:31,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-04 23:16:31,448 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:16:31,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:16:31,448 INFO L82 PathProgramCache]: Analyzing trace with hash 615446250, now seen corresponding path program 17 times [2020-09-04 23:16:31,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:16:31,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507178938] [2020-09-04 23:16:31,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:16:31,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:32,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:16:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:32,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2397 backedges. 0 proven. 2397 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:16:32,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507178938] [2020-09-04 23:16:32,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:16:32,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-04 23:16:32,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828237260] [2020-09-04 23:16:32,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-04 23:16:32,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:16:32,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-04 23:16:32,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-09-04 23:16:32,800 INFO L87 Difference]: Start difference. First operand 607 states and 607 transitions. Second operand 22 states. [2020-09-04 23:16:36,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:16:36,943 INFO L93 Difference]: Finished difference Result 646 states and 646 transitions. [2020-09-04 23:16:36,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-04 23:16:36,944 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 606 [2020-09-04 23:16:36,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:16:36,948 INFO L225 Difference]: With dead ends: 646 [2020-09-04 23:16:36,948 INFO L226 Difference]: Without dead ends: 638 [2020-09-04 23:16:36,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=117, Invalid=1523, Unknown=0, NotChecked=0, Total=1640 [2020-09-04 23:16:36,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-09-04 23:16:37,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 624. [2020-09-04 23:16:37,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 624 states. [2020-09-04 23:16:37,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 624 transitions. [2020-09-04 23:16:37,005 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 624 transitions. Word has length 606 [2020-09-04 23:16:37,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:16:37,006 INFO L479 AbstractCegarLoop]: Abstraction has 624 states and 624 transitions. [2020-09-04 23:16:37,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-04 23:16:37,006 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 624 transitions. [2020-09-04 23:16:37,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2020-09-04 23:16:37,012 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:16:37,012 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:16:37,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-04 23:16:37,013 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:16:37,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:16:37,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1224952539, now seen corresponding path program 18 times [2020-09-04 23:16:37,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:16:37,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182743436] [2020-09-04 23:16:37,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:16:37,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:37,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:16:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:38,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2691 backedges. 0 proven. 2691 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:16:38,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182743436] [2020-09-04 23:16:38,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:16:38,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-04 23:16:38,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371358139] [2020-09-04 23:16:38,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-04 23:16:38,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:16:38,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-04 23:16:38,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-09-04 23:16:38,314 INFO L87 Difference]: Start difference. First operand 624 states and 624 transitions. Second operand 23 states. [2020-09-04 23:16:42,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:16:42,811 INFO L93 Difference]: Finished difference Result 663 states and 663 transitions. [2020-09-04 23:16:42,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-04 23:16:42,812 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 623 [2020-09-04 23:16:42,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:16:42,816 INFO L225 Difference]: With dead ends: 663 [2020-09-04 23:16:42,816 INFO L226 Difference]: Without dead ends: 655 [2020-09-04 23:16:42,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=123, Invalid=1683, Unknown=0, NotChecked=0, Total=1806 [2020-09-04 23:16:42,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2020-09-04 23:16:42,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 641. [2020-09-04 23:16:42,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2020-09-04 23:16:42,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 641 transitions. [2020-09-04 23:16:42,884 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 641 transitions. Word has length 623 [2020-09-04 23:16:42,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:16:42,885 INFO L479 AbstractCegarLoop]: Abstraction has 641 states and 641 transitions. [2020-09-04 23:16:42,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-04 23:16:42,885 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 641 transitions. [2020-09-04 23:16:42,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2020-09-04 23:16:42,893 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:16:42,893 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:16:42,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-04 23:16:42,894 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:16:42,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:16:42,894 INFO L82 PathProgramCache]: Analyzing trace with hash 819279626, now seen corresponding path program 19 times [2020-09-04 23:16:42,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:16:42,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372015790] [2020-09-04 23:16:42,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:16:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:43,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:16:43,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:44,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3002 backedges. 0 proven. 3002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:16:44,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372015790] [2020-09-04 23:16:44,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:16:44,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-09-04 23:16:44,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122656378] [2020-09-04 23:16:44,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-04 23:16:44,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:16:44,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-04 23:16:44,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2020-09-04 23:16:44,230 INFO L87 Difference]: Start difference. First operand 641 states and 641 transitions. Second operand 24 states. [2020-09-04 23:16:49,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:16:49,109 INFO L93 Difference]: Finished difference Result 680 states and 680 transitions. [2020-09-04 23:16:49,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-04 23:16:49,110 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 640 [2020-09-04 23:16:49,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:16:49,114 INFO L225 Difference]: With dead ends: 680 [2020-09-04 23:16:49,115 INFO L226 Difference]: Without dead ends: 672 [2020-09-04 23:16:49,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=129, Invalid=1851, Unknown=0, NotChecked=0, Total=1980 [2020-09-04 23:16:49,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2020-09-04 23:16:49,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 658. [2020-09-04 23:16:49,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-09-04 23:16:49,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 658 transitions. [2020-09-04 23:16:49,163 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 658 transitions. Word has length 640 [2020-09-04 23:16:49,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:16:49,163 INFO L479 AbstractCegarLoop]: Abstraction has 658 states and 658 transitions. [2020-09-04 23:16:49,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-04 23:16:49,163 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 658 transitions. [2020-09-04 23:16:49,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 658 [2020-09-04 23:16:49,170 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:16:49,170 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:16:49,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-04 23:16:49,171 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:16:49,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:16:49,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1482772155, now seen corresponding path program 20 times [2020-09-04 23:16:49,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:16:49,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266795367] [2020-09-04 23:16:49,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:16:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:50,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:16:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:50,502 INFO L134 CoverageAnalysis]: Checked inductivity of 3330 backedges. 0 proven. 3330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:16:50,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266795367] [2020-09-04 23:16:50,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:16:50,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-04 23:16:50,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188208441] [2020-09-04 23:16:50,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-04 23:16:50,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:16:50,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-04 23:16:50,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-09-04 23:16:50,506 INFO L87 Difference]: Start difference. First operand 658 states and 658 transitions. Second operand 25 states. [2020-09-04 23:16:55,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:16:55,790 INFO L93 Difference]: Finished difference Result 697 states and 697 transitions. [2020-09-04 23:16:55,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-04 23:16:55,792 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 657 [2020-09-04 23:16:55,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:16:55,797 INFO L225 Difference]: With dead ends: 697 [2020-09-04 23:16:55,797 INFO L226 Difference]: Without dead ends: 689 [2020-09-04 23:16:55,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=135, Invalid=2027, Unknown=0, NotChecked=0, Total=2162 [2020-09-04 23:16:55,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2020-09-04 23:16:55,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 675. [2020-09-04 23:16:55,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 675 states. [2020-09-04 23:16:55,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 675 transitions. [2020-09-04 23:16:55,852 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 675 transitions. Word has length 657 [2020-09-04 23:16:55,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:16:55,852 INFO L479 AbstractCegarLoop]: Abstraction has 675 states and 675 transitions. [2020-09-04 23:16:55,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-04 23:16:55,853 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 675 transitions. [2020-09-04 23:16:55,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 675 [2020-09-04 23:16:55,858 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:16:55,859 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:16:55,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-04 23:16:55,859 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:16:55,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:16:55,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1098682582, now seen corresponding path program 21 times [2020-09-04 23:16:55,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:16:55,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620286690] [2020-09-04 23:16:55,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:16:55,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:56,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:16:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:57,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3675 backedges. 0 proven. 3675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:16:57,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620286690] [2020-09-04 23:16:57,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:16:57,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-09-04 23:16:57,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220216830] [2020-09-04 23:16:57,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-09-04 23:16:57,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:16:57,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-09-04 23:16:57,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2020-09-04 23:16:57,273 INFO L87 Difference]: Start difference. First operand 675 states and 675 transitions. Second operand 26 states. [2020-09-04 23:17:02,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:17:02,983 INFO L93 Difference]: Finished difference Result 714 states and 714 transitions. [2020-09-04 23:17:02,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-04 23:17:02,987 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 674 [2020-09-04 23:17:02,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:17:02,992 INFO L225 Difference]: With dead ends: 714 [2020-09-04 23:17:02,992 INFO L226 Difference]: Without dead ends: 706 [2020-09-04 23:17:02,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=141, Invalid=2211, Unknown=0, NotChecked=0, Total=2352 [2020-09-04 23:17:02,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-09-04 23:17:03,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 692. [2020-09-04 23:17:03,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-09-04 23:17:03,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 692 transitions. [2020-09-04 23:17:03,074 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 692 transitions. Word has length 674 [2020-09-04 23:17:03,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:17:03,075 INFO L479 AbstractCegarLoop]: Abstraction has 692 states and 692 transitions. [2020-09-04 23:17:03,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-09-04 23:17:03,075 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 692 transitions. [2020-09-04 23:17:03,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 692 [2020-09-04 23:17:03,081 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:17:03,082 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:17:03,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-04 23:17:03,082 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:17:03,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:17:03,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1742316901, now seen corresponding path program 22 times [2020-09-04 23:17:03,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:17:03,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304195121] [2020-09-04 23:17:03,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:17:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:04,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:17:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:04,624 INFO L134 CoverageAnalysis]: Checked inductivity of 4037 backedges. 0 proven. 4037 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:17:04,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304195121] [2020-09-04 23:17:04,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:17:04,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-04 23:17:04,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97850761] [2020-09-04 23:17:04,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-04 23:17:04,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:17:04,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-04 23:17:04,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-09-04 23:17:04,627 INFO L87 Difference]: Start difference. First operand 692 states and 692 transitions. Second operand 27 states. [2020-09-04 23:17:10,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:17:10,796 INFO L93 Difference]: Finished difference Result 731 states and 731 transitions. [2020-09-04 23:17:10,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-04 23:17:10,797 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 691 [2020-09-04 23:17:10,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:17:10,802 INFO L225 Difference]: With dead ends: 731 [2020-09-04 23:17:10,802 INFO L226 Difference]: Without dead ends: 723 [2020-09-04 23:17:10,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=147, Invalid=2403, Unknown=0, NotChecked=0, Total=2550 [2020-09-04 23:17:10,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-09-04 23:17:10,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 709. [2020-09-04 23:17:10,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709 states. [2020-09-04 23:17:10,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 709 transitions. [2020-09-04 23:17:10,877 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 709 transitions. Word has length 691 [2020-09-04 23:17:10,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:17:10,878 INFO L479 AbstractCegarLoop]: Abstraction has 709 states and 709 transitions. [2020-09-04 23:17:10,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-04 23:17:10,878 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 709 transitions. [2020-09-04 23:17:10,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 709 [2020-09-04 23:17:10,885 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:17:10,885 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:17:10,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-04 23:17:10,886 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:17:10,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:17:10,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1514430646, now seen corresponding path program 23 times [2020-09-04 23:17:10,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:17:10,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410230267] [2020-09-04 23:17:10,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:17:11,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:12,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:17:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:12,661 INFO L134 CoverageAnalysis]: Checked inductivity of 4416 backedges. 0 proven. 4416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:17:12,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [410230267] [2020-09-04 23:17:12,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:17:12,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-09-04 23:17:12,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139492515] [2020-09-04 23:17:12,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-09-04 23:17:12,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:17:12,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-09-04 23:17:12,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2020-09-04 23:17:12,664 INFO L87 Difference]: Start difference. First operand 709 states and 709 transitions. Second operand 28 states. [2020-09-04 23:17:19,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:17:19,435 INFO L93 Difference]: Finished difference Result 748 states and 748 transitions. [2020-09-04 23:17:19,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-04 23:17:19,436 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 708 [2020-09-04 23:17:19,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:17:19,441 INFO L225 Difference]: With dead ends: 748 [2020-09-04 23:17:19,441 INFO L226 Difference]: Without dead ends: 740 [2020-09-04 23:17:19,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=153, Invalid=2603, Unknown=0, NotChecked=0, Total=2756 [2020-09-04 23:17:19,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2020-09-04 23:17:19,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 726. [2020-09-04 23:17:19,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 726 states. [2020-09-04 23:17:19,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 726 transitions. [2020-09-04 23:17:19,498 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 726 transitions. Word has length 708 [2020-09-04 23:17:19,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:17:19,499 INFO L479 AbstractCegarLoop]: Abstraction has 726 states and 726 transitions. [2020-09-04 23:17:19,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-09-04 23:17:19,499 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 726 transitions. [2020-09-04 23:17:19,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 726 [2020-09-04 23:17:19,505 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:17:19,506 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:17:19,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-04 23:17:19,507 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:17:19,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:17:19,507 INFO L82 PathProgramCache]: Analyzing trace with hash -191861125, now seen corresponding path program 24 times [2020-09-04 23:17:19,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:17:19,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146709038] [2020-09-04 23:17:19,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:17:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:20,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:17:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:21,246 INFO L134 CoverageAnalysis]: Checked inductivity of 4812 backedges. 0 proven. 4812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:17:21,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146709038] [2020-09-04 23:17:21,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:17:21,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-09-04 23:17:21,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399826448] [2020-09-04 23:17:21,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-04 23:17:21,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:17:21,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-04 23:17:21,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2020-09-04 23:17:21,248 INFO L87 Difference]: Start difference. First operand 726 states and 726 transitions. Second operand 29 states. [2020-09-04 23:17:28,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:17:28,482 INFO L93 Difference]: Finished difference Result 765 states and 765 transitions. [2020-09-04 23:17:28,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-04 23:17:28,484 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 725 [2020-09-04 23:17:28,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:17:28,489 INFO L225 Difference]: With dead ends: 765 [2020-09-04 23:17:28,489 INFO L226 Difference]: Without dead ends: 757 [2020-09-04 23:17:28,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=159, Invalid=2811, Unknown=0, NotChecked=0, Total=2970 [2020-09-04 23:17:28,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2020-09-04 23:17:28,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 743. [2020-09-04 23:17:28,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-09-04 23:17:28,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 743 transitions. [2020-09-04 23:17:28,564 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 743 transitions. Word has length 725 [2020-09-04 23:17:28,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:17:28,565 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 743 transitions. [2020-09-04 23:17:28,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-04 23:17:28,565 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 743 transitions. [2020-09-04 23:17:28,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 743 [2020-09-04 23:17:28,570 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:17:28,570 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:17:28,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-09-04 23:17:28,571 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:17:28,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:17:28,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1040172906, now seen corresponding path program 25 times [2020-09-04 23:17:28,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:17:28,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141743302] [2020-09-04 23:17:28,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:17:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:29,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:17:29,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:30,404 INFO L134 CoverageAnalysis]: Checked inductivity of 5225 backedges. 0 proven. 5225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:17:30,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141743302] [2020-09-04 23:17:30,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:17:30,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-09-04 23:17:30,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683395215] [2020-09-04 23:17:30,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-09-04 23:17:30,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:17:30,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-09-04 23:17:30,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2020-09-04 23:17:30,407 INFO L87 Difference]: Start difference. First operand 743 states and 743 transitions. Second operand 30 states. [2020-09-04 23:17:38,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:17:38,270 INFO L93 Difference]: Finished difference Result 782 states and 782 transitions. [2020-09-04 23:17:38,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-04 23:17:38,272 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 742 [2020-09-04 23:17:38,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:17:38,276 INFO L225 Difference]: With dead ends: 782 [2020-09-04 23:17:38,276 INFO L226 Difference]: Without dead ends: 774 [2020-09-04 23:17:38,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=165, Invalid=3027, Unknown=0, NotChecked=0, Total=3192 [2020-09-04 23:17:38,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2020-09-04 23:17:38,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 760. [2020-09-04 23:17:38,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 760 states. [2020-09-04 23:17:38,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 760 transitions. [2020-09-04 23:17:38,328 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 760 transitions. Word has length 742 [2020-09-04 23:17:38,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:17:38,329 INFO L479 AbstractCegarLoop]: Abstraction has 760 states and 760 transitions. [2020-09-04 23:17:38,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-09-04 23:17:38,329 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 760 transitions. [2020-09-04 23:17:38,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 760 [2020-09-04 23:17:38,336 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:17:38,337 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:17:38,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-09-04 23:17:38,337 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:17:38,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:17:38,338 INFO L82 PathProgramCache]: Analyzing trace with hash -899839397, now seen corresponding path program 26 times [2020-09-04 23:17:38,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:17:38,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640755102] [2020-09-04 23:17:38,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:17:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:39,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:17:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:40,285 INFO L134 CoverageAnalysis]: Checked inductivity of 5655 backedges. 0 proven. 5655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:17:40,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640755102] [2020-09-04 23:17:40,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:17:40,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-09-04 23:17:40,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218178890] [2020-09-04 23:17:40,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-09-04 23:17:40,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:17:40,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-09-04 23:17:40,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2020-09-04 23:17:40,288 INFO L87 Difference]: Start difference. First operand 760 states and 760 transitions. Second operand 31 states. [2020-09-04 23:17:48,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:17:48,979 INFO L93 Difference]: Finished difference Result 799 states and 799 transitions. [2020-09-04 23:17:48,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-04 23:17:48,981 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 759 [2020-09-04 23:17:48,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:17:48,984 INFO L225 Difference]: With dead ends: 799 [2020-09-04 23:17:48,984 INFO L226 Difference]: Without dead ends: 791 [2020-09-04 23:17:48,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=171, Invalid=3251, Unknown=0, NotChecked=0, Total=3422 [2020-09-04 23:17:48,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2020-09-04 23:17:49,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 777. [2020-09-04 23:17:49,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 777 states. [2020-09-04 23:17:49,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 777 transitions. [2020-09-04 23:17:49,046 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 777 transitions. Word has length 759 [2020-09-04 23:17:49,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:17:49,047 INFO L479 AbstractCegarLoop]: Abstraction has 777 states and 777 transitions. [2020-09-04 23:17:49,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-09-04 23:17:49,047 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 777 transitions. [2020-09-04 23:17:49,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2020-09-04 23:17:49,055 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:17:49,055 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:17:49,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-09-04 23:17:49,056 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:17:49,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:17:49,056 INFO L82 PathProgramCache]: Analyzing trace with hash 2119296906, now seen corresponding path program 27 times [2020-09-04 23:17:49,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:17:49,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972495943] [2020-09-04 23:17:49,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:17:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:50,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:17:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:51,251 INFO L134 CoverageAnalysis]: Checked inductivity of 6102 backedges. 0 proven. 6102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:17:51,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972495943] [2020-09-04 23:17:51,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:17:51,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-09-04 23:17:51,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762587848] [2020-09-04 23:17:51,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-09-04 23:17:51,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:17:51,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-09-04 23:17:51,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2020-09-04 23:17:51,254 INFO L87 Difference]: Start difference. First operand 777 states and 777 transitions. Second operand 32 states. [2020-09-04 23:18:00,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:18:00,654 INFO L93 Difference]: Finished difference Result 816 states and 816 transitions. [2020-09-04 23:18:00,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-04 23:18:00,656 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 776 [2020-09-04 23:18:00,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:18:00,660 INFO L225 Difference]: With dead ends: 816 [2020-09-04 23:18:00,660 INFO L226 Difference]: Without dead ends: 808 [2020-09-04 23:18:00,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=177, Invalid=3483, Unknown=0, NotChecked=0, Total=3660 [2020-09-04 23:18:00,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2020-09-04 23:18:00,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 794. [2020-09-04 23:18:00,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-09-04 23:18:00,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 794 transitions. [2020-09-04 23:18:00,726 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 794 transitions. Word has length 776 [2020-09-04 23:18:00,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:18:00,727 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 794 transitions. [2020-09-04 23:18:00,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-09-04 23:18:00,727 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 794 transitions. [2020-09-04 23:18:00,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2020-09-04 23:18:00,732 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:18:00,733 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:18:00,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-09-04 23:18:00,733 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:18:00,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:18:00,733 INFO L82 PathProgramCache]: Analyzing trace with hash -959730117, now seen corresponding path program 28 times [2020-09-04 23:18:00,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:18:00,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154233926] [2020-09-04 23:18:00,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:18:00,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:02,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:18:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:03,100 INFO L134 CoverageAnalysis]: Checked inductivity of 6566 backedges. 0 proven. 6566 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:18:03,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154233926] [2020-09-04 23:18:03,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:18:03,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-09-04 23:18:03,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705967816] [2020-09-04 23:18:03,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-09-04 23:18:03,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:18:03,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-09-04 23:18:03,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=993, Unknown=0, NotChecked=0, Total=1056 [2020-09-04 23:18:03,103 INFO L87 Difference]: Start difference. First operand 794 states and 794 transitions. Second operand 33 states. [2020-09-04 23:18:13,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:18:13,415 INFO L93 Difference]: Finished difference Result 833 states and 833 transitions. [2020-09-04 23:18:13,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-04 23:18:13,417 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 793 [2020-09-04 23:18:13,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:18:13,421 INFO L225 Difference]: With dead ends: 833 [2020-09-04 23:18:13,421 INFO L226 Difference]: Without dead ends: 825 [2020-09-04 23:18:13,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=183, Invalid=3723, Unknown=0, NotChecked=0, Total=3906 [2020-09-04 23:18:13,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2020-09-04 23:18:13,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 811. [2020-09-04 23:18:13,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 811 states. [2020-09-04 23:18:13,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 811 transitions. [2020-09-04 23:18:13,491 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 811 transitions. Word has length 793 [2020-09-04 23:18:13,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:18:13,492 INFO L479 AbstractCegarLoop]: Abstraction has 811 states and 811 transitions. [2020-09-04 23:18:13,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-09-04 23:18:13,492 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 811 transitions. [2020-09-04 23:18:13,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 811 [2020-09-04 23:18:13,498 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:18:13,498 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:18:13,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-09-04 23:18:13,499 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:18:13,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:18:13,499 INFO L82 PathProgramCache]: Analyzing trace with hash 489947050, now seen corresponding path program 29 times [2020-09-04 23:18:13,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:18:13,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810005309] [2020-09-04 23:18:13,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:18:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:15,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:18:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:15,839 INFO L134 CoverageAnalysis]: Checked inductivity of 7047 backedges. 0 proven. 7047 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:18:15,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810005309] [2020-09-04 23:18:15,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:18:15,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-09-04 23:18:15,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610735460] [2020-09-04 23:18:15,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-09-04 23:18:15,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:18:15,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-09-04 23:18:15,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2020-09-04 23:18:15,842 INFO L87 Difference]: Start difference. First operand 811 states and 811 transitions. Second operand 34 states. [2020-09-04 23:18:27,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:18:27,008 INFO L93 Difference]: Finished difference Result 850 states and 850 transitions. [2020-09-04 23:18:27,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-04 23:18:27,010 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 810 [2020-09-04 23:18:27,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:18:27,014 INFO L225 Difference]: With dead ends: 850 [2020-09-04 23:18:27,014 INFO L226 Difference]: Without dead ends: 842 [2020-09-04 23:18:27,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=189, Invalid=3971, Unknown=0, NotChecked=0, Total=4160 [2020-09-04 23:18:27,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2020-09-04 23:18:27,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 828. [2020-09-04 23:18:27,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 828 states. [2020-09-04 23:18:27,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 828 transitions. [2020-09-04 23:18:27,076 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 828 transitions. Word has length 810 [2020-09-04 23:18:27,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:18:27,078 INFO L479 AbstractCegarLoop]: Abstraction has 828 states and 828 transitions. [2020-09-04 23:18:27,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-09-04 23:18:27,078 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 828 transitions. [2020-09-04 23:18:27,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2020-09-04 23:18:27,084 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:18:27,084 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:18:27,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-09-04 23:18:27,085 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:18:27,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:18:27,085 INFO L82 PathProgramCache]: Analyzing trace with hash -946284005, now seen corresponding path program 30 times [2020-09-04 23:18:27,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:18:27,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616808637] [2020-09-04 23:18:27,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:18:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:28,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:18:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:29,581 INFO L134 CoverageAnalysis]: Checked inductivity of 7545 backedges. 0 proven. 7545 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:18:29,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616808637] [2020-09-04 23:18:29,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:18:29,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-09-04 23:18:29,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322145630] [2020-09-04 23:18:29,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-09-04 23:18:29,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:18:29,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-09-04 23:18:29,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=1123, Unknown=0, NotChecked=0, Total=1190 [2020-09-04 23:18:29,584 INFO L87 Difference]: Start difference. First operand 828 states and 828 transitions. Second operand 35 states. [2020-09-04 23:18:41,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:18:41,639 INFO L93 Difference]: Finished difference Result 867 states and 867 transitions. [2020-09-04 23:18:41,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-04 23:18:41,641 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 827 [2020-09-04 23:18:41,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:18:41,645 INFO L225 Difference]: With dead ends: 867 [2020-09-04 23:18:41,645 INFO L226 Difference]: Without dead ends: 859 [2020-09-04 23:18:41,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=195, Invalid=4227, Unknown=0, NotChecked=0, Total=4422 [2020-09-04 23:18:41,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-09-04 23:18:41,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 845. [2020-09-04 23:18:41,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 845 states. [2020-09-04 23:18:41,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 845 transitions. [2020-09-04 23:18:41,734 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 845 transitions. Word has length 827 [2020-09-04 23:18:41,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:18:41,735 INFO L479 AbstractCegarLoop]: Abstraction has 845 states and 845 transitions. [2020-09-04 23:18:41,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-09-04 23:18:41,735 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 845 transitions. [2020-09-04 23:18:41,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 845 [2020-09-04 23:18:41,741 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:18:41,742 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:18:41,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-09-04 23:18:41,742 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:18:41,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:18:41,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1331163190, now seen corresponding path program 31 times [2020-09-04 23:18:41,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:18:41,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717336742] [2020-09-04 23:18:41,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:18:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:43,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:18:43,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:44,405 INFO L134 CoverageAnalysis]: Checked inductivity of 8060 backedges. 0 proven. 8060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:18:44,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717336742] [2020-09-04 23:18:44,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:18:44,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-09-04 23:18:44,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406277798] [2020-09-04 23:18:44,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-09-04 23:18:44,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:18:44,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-09-04 23:18:44,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2020-09-04 23:18:44,409 INFO L87 Difference]: Start difference. First operand 845 states and 845 transitions. Second operand 36 states. [2020-09-04 23:18:57,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:18:57,991 INFO L93 Difference]: Finished difference Result 884 states and 884 transitions. [2020-09-04 23:18:57,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-09-04 23:18:57,993 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 844 [2020-09-04 23:18:57,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:18:57,998 INFO L225 Difference]: With dead ends: 884 [2020-09-04 23:18:57,998 INFO L226 Difference]: Without dead ends: 876 [2020-09-04 23:18:57,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=201, Invalid=4491, Unknown=0, NotChecked=0, Total=4692 [2020-09-04 23:18:58,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2020-09-04 23:18:58,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 862. [2020-09-04 23:18:58,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 862 states. [2020-09-04 23:18:58,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 862 transitions. [2020-09-04 23:18:58,067 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 862 transitions. Word has length 844 [2020-09-04 23:18:58,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:18:58,068 INFO L479 AbstractCegarLoop]: Abstraction has 862 states and 862 transitions. [2020-09-04 23:18:58,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-09-04 23:18:58,068 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 862 transitions. [2020-09-04 23:18:58,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 862 [2020-09-04 23:18:58,074 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:18:58,075 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:18:58,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-09-04 23:18:58,075 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:18:58,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:18:58,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1157427717, now seen corresponding path program 32 times [2020-09-04 23:18:58,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:18:58,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932168997] [2020-09-04 23:18:58,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:18:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:00,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:19:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:00,895 INFO L134 CoverageAnalysis]: Checked inductivity of 8592 backedges. 0 proven. 8592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:19:00,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932168997] [2020-09-04 23:19:00,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:19:00,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-09-04 23:19:00,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882156066] [2020-09-04 23:19:00,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-09-04 23:19:00,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:19:00,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-09-04 23:19:00,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=1261, Unknown=0, NotChecked=0, Total=1332 [2020-09-04 23:19:00,899 INFO L87 Difference]: Start difference. First operand 862 states and 862 transitions. Second operand 37 states. [2020-09-04 23:19:15,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:19:15,548 INFO L93 Difference]: Finished difference Result 901 states and 901 transitions. [2020-09-04 23:19:15,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-09-04 23:19:15,550 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 861 [2020-09-04 23:19:15,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:19:15,555 INFO L225 Difference]: With dead ends: 901 [2020-09-04 23:19:15,555 INFO L226 Difference]: Without dead ends: 893 [2020-09-04 23:19:15,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=207, Invalid=4763, Unknown=0, NotChecked=0, Total=4970 [2020-09-04 23:19:15,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2020-09-04 23:19:15,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 879. [2020-09-04 23:19:15,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 879 states. [2020-09-04 23:19:15,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 879 transitions. [2020-09-04 23:19:15,628 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 879 transitions. Word has length 861 [2020-09-04 23:19:15,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:19:15,630 INFO L479 AbstractCegarLoop]: Abstraction has 879 states and 879 transitions. [2020-09-04 23:19:15,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-09-04 23:19:15,630 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 879 transitions. [2020-09-04 23:19:15,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 879 [2020-09-04 23:19:15,664 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:19:15,665 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:19:15,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-09-04 23:19:15,665 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:19:15,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:19:15,666 INFO L82 PathProgramCache]: Analyzing trace with hash -835708950, now seen corresponding path program 33 times [2020-09-04 23:19:15,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:19:15,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697344522] [2020-09-04 23:19:15,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:19:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:17,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:19:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:18,676 INFO L134 CoverageAnalysis]: Checked inductivity of 9141 backedges. 0 proven. 9141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:19:18,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697344522] [2020-09-04 23:19:18,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:19:18,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-09-04 23:19:18,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284335862] [2020-09-04 23:19:18,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-09-04 23:19:18,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:19:18,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-09-04 23:19:18,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=1333, Unknown=0, NotChecked=0, Total=1406 [2020-09-04 23:19:18,679 INFO L87 Difference]: Start difference. First operand 879 states and 879 transitions. Second operand 38 states. [2020-09-04 23:19:34,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:19:34,950 INFO L93 Difference]: Finished difference Result 918 states and 918 transitions. [2020-09-04 23:19:34,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-04 23:19:34,952 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 878 [2020-09-04 23:19:34,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:19:34,956 INFO L225 Difference]: With dead ends: 918 [2020-09-04 23:19:34,956 INFO L226 Difference]: Without dead ends: 910 [2020-09-04 23:19:34,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=213, Invalid=5043, Unknown=0, NotChecked=0, Total=5256 [2020-09-04 23:19:34,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2020-09-04 23:19:35,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 896. [2020-09-04 23:19:35,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 896 states. [2020-09-04 23:19:35,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 896 transitions. [2020-09-04 23:19:35,029 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 896 transitions. Word has length 878 [2020-09-04 23:19:35,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:19:35,030 INFO L479 AbstractCegarLoop]: Abstraction has 896 states and 896 transitions. [2020-09-04 23:19:35,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-09-04 23:19:35,030 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 896 transitions. [2020-09-04 23:19:35,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 896 [2020-09-04 23:19:35,037 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:19:35,037 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:19:35,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-09-04 23:19:35,038 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:19:35,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:19:35,039 INFO L82 PathProgramCache]: Analyzing trace with hash 2143832539, now seen corresponding path program 34 times [2020-09-04 23:19:35,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:19:35,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306446908] [2020-09-04 23:19:35,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:19:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:37,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:19:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:38,525 INFO L134 CoverageAnalysis]: Checked inductivity of 9707 backedges. 0 proven. 9707 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:19:38,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306446908] [2020-09-04 23:19:38,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:19:38,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-09-04 23:19:38,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712854254] [2020-09-04 23:19:38,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-09-04 23:19:38,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:19:38,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-09-04 23:19:38,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=1407, Unknown=0, NotChecked=0, Total=1482 [2020-09-04 23:19:38,528 INFO L87 Difference]: Start difference. First operand 896 states and 896 transitions. Second operand 39 states. [2020-09-04 23:19:56,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:19:56,792 INFO L93 Difference]: Finished difference Result 935 states and 935 transitions. [2020-09-04 23:19:56,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-09-04 23:19:56,795 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 895 [2020-09-04 23:19:56,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:19:56,799 INFO L225 Difference]: With dead ends: 935 [2020-09-04 23:19:56,800 INFO L226 Difference]: Without dead ends: 927 [2020-09-04 23:19:56,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=219, Invalid=5331, Unknown=0, NotChecked=0, Total=5550 [2020-09-04 23:19:56,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2020-09-04 23:19:56,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 913. [2020-09-04 23:19:56,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 913 states. [2020-09-04 23:19:56,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 913 transitions. [2020-09-04 23:19:56,877 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 913 transitions. Word has length 895 [2020-09-04 23:19:56,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:19:56,878 INFO L479 AbstractCegarLoop]: Abstraction has 913 states and 913 transitions. [2020-09-04 23:19:56,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-09-04 23:19:56,879 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 913 transitions. [2020-09-04 23:19:56,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 913 [2020-09-04 23:19:56,890 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:19:56,891 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:19:56,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-09-04 23:19:56,892 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:19:56,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:19:56,892 INFO L82 PathProgramCache]: Analyzing trace with hash 718149642, now seen corresponding path program 35 times [2020-09-04 23:19:56,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:19:56,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291105385] [2020-09-04 23:19:56,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:19:57,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:59,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:19:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:00,444 INFO L134 CoverageAnalysis]: Checked inductivity of 10290 backedges. 0 proven. 10290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:20:00,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291105385] [2020-09-04 23:20:00,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:20:00,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-09-04 23:20:00,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939391458] [2020-09-04 23:20:00,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-09-04 23:20:00,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:20:00,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-09-04 23:20:00,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1483, Unknown=0, NotChecked=0, Total=1560 [2020-09-04 23:20:00,447 INFO L87 Difference]: Start difference. First operand 913 states and 913 transitions. Second operand 40 states. [2020-09-04 23:20:20,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:20:20,912 INFO L93 Difference]: Finished difference Result 952 states and 952 transitions. [2020-09-04 23:20:20,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-09-04 23:20:20,915 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 912 [2020-09-04 23:20:20,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:20:20,920 INFO L225 Difference]: With dead ends: 952 [2020-09-04 23:20:20,920 INFO L226 Difference]: Without dead ends: 944 [2020-09-04 23:20:20,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=225, Invalid=5627, Unknown=0, NotChecked=0, Total=5852 [2020-09-04 23:20:20,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2020-09-04 23:20:21,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 930. [2020-09-04 23:20:21,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 930 states. [2020-09-04 23:20:21,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 930 transitions. [2020-09-04 23:20:21,004 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 930 transitions. Word has length 912 [2020-09-04 23:20:21,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:20:21,006 INFO L479 AbstractCegarLoop]: Abstraction has 930 states and 930 transitions. [2020-09-04 23:20:21,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-09-04 23:20:21,006 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 930 transitions. [2020-09-04 23:20:21,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 930 [2020-09-04 23:20:21,014 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:20:21,014 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:20:21,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-09-04 23:20:21,015 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:20:21,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:20:21,015 INFO L82 PathProgramCache]: Analyzing trace with hash -987329093, now seen corresponding path program 36 times [2020-09-04 23:20:21,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:20:21,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740774810] [2020-09-04 23:20:21,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:20:21,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:24,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:20:24,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:25,137 INFO L134 CoverageAnalysis]: Checked inductivity of 10890 backedges. 0 proven. 10890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:20:25,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740774810] [2020-09-04 23:20:25,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:20:25,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-09-04 23:20:25,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100046127] [2020-09-04 23:20:25,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-09-04 23:20:25,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:20:25,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-09-04 23:20:25,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1561, Unknown=0, NotChecked=0, Total=1640 [2020-09-04 23:20:25,141 INFO L87 Difference]: Start difference. First operand 930 states and 930 transitions. Second operand 41 states. [2020-09-04 23:20:47,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:20:47,266 INFO L93 Difference]: Finished difference Result 969 states and 969 transitions. [2020-09-04 23:20:47,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-09-04 23:20:47,268 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 929 [2020-09-04 23:20:47,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:20:47,273 INFO L225 Difference]: With dead ends: 969 [2020-09-04 23:20:47,274 INFO L226 Difference]: Without dead ends: 961 [2020-09-04 23:20:47,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=231, Invalid=5931, Unknown=0, NotChecked=0, Total=6162 [2020-09-04 23:20:47,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2020-09-04 23:20:47,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 947. [2020-09-04 23:20:47,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 947 states. [2020-09-04 23:20:47,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 947 transitions. [2020-09-04 23:20:47,369 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 947 transitions. Word has length 929 [2020-09-04 23:20:47,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:20:47,371 INFO L479 AbstractCegarLoop]: Abstraction has 947 states and 947 transitions. [2020-09-04 23:20:47,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-09-04 23:20:47,371 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 947 transitions. [2020-09-04 23:20:47,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 947 [2020-09-04 23:20:47,379 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:20:47,380 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:20:47,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-09-04 23:20:47,380 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:20:47,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:20:47,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1157361622, now seen corresponding path program 37 times [2020-09-04 23:20:47,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:20:47,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578978324] [2020-09-04 23:20:47,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:20:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:51,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:20:51,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:51,919 INFO L134 CoverageAnalysis]: Checked inductivity of 11507 backedges. 0 proven. 11507 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:20:51,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578978324] [2020-09-04 23:20:51,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:20:51,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-09-04 23:20:51,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801886512] [2020-09-04 23:20:51,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-09-04 23:20:51,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:20:51,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-09-04 23:20:51,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1641, Unknown=0, NotChecked=0, Total=1722 [2020-09-04 23:20:51,923 INFO L87 Difference]: Start difference. First operand 947 states and 947 transitions. Second operand 42 states. [2020-09-04 23:21:17,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:21:17,670 INFO L93 Difference]: Finished difference Result 986 states and 986 transitions. [2020-09-04 23:21:17,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-09-04 23:21:17,672 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 946 [2020-09-04 23:21:17,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:21:17,677 INFO L225 Difference]: With dead ends: 986 [2020-09-04 23:21:17,677 INFO L226 Difference]: Without dead ends: 978 [2020-09-04 23:21:17,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=237, Invalid=6243, Unknown=0, NotChecked=0, Total=6480 [2020-09-04 23:21:17,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2020-09-04 23:21:17,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 964. [2020-09-04 23:21:17,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 964 states. [2020-09-04 23:21:17,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 964 transitions. [2020-09-04 23:21:17,775 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 964 transitions. Word has length 946 [2020-09-04 23:21:17,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:21:17,776 INFO L479 AbstractCegarLoop]: Abstraction has 964 states and 964 transitions. [2020-09-04 23:21:17,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-09-04 23:21:17,776 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 964 transitions. [2020-09-04 23:21:17,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 964 [2020-09-04 23:21:17,784 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:21:17,785 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:21:17,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-09-04 23:21:17,785 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:21:17,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:21:17,785 INFO L82 PathProgramCache]: Analyzing trace with hash -354690661, now seen corresponding path program 38 times [2020-09-04 23:21:17,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:21:17,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437310825] [2020-09-04 23:21:17,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:21:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:21,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:21:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:22,109 INFO L134 CoverageAnalysis]: Checked inductivity of 12141 backedges. 0 proven. 12141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:21:22,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437310825] [2020-09-04 23:21:22,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:21:22,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-09-04 23:21:22,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038260980] [2020-09-04 23:21:22,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-09-04 23:21:22,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:21:22,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-09-04 23:21:22,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1723, Unknown=0, NotChecked=0, Total=1806 [2020-09-04 23:21:22,112 INFO L87 Difference]: Start difference. First operand 964 states and 964 transitions. Second operand 43 states. [2020-09-04 23:21:50,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:21:50,650 INFO L93 Difference]: Finished difference Result 1003 states and 1003 transitions. [2020-09-04 23:21:50,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-09-04 23:21:50,653 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 963 [2020-09-04 23:21:50,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:21:50,658 INFO L225 Difference]: With dead ends: 1003 [2020-09-04 23:21:50,658 INFO L226 Difference]: Without dead ends: 995 [2020-09-04 23:21:50,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=243, Invalid=6563, Unknown=0, NotChecked=0, Total=6806 [2020-09-04 23:21:50,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2020-09-04 23:21:50,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 981. [2020-09-04 23:21:50,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 981 states. [2020-09-04 23:21:50,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 981 transitions. [2020-09-04 23:21:50,747 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 981 transitions. Word has length 963 [2020-09-04 23:21:50,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:21:50,748 INFO L479 AbstractCegarLoop]: Abstraction has 981 states and 981 transitions. [2020-09-04 23:21:50,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-09-04 23:21:50,748 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 981 transitions. [2020-09-04 23:21:50,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 981 [2020-09-04 23:21:50,757 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:21:50,758 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:21:50,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-09-04 23:21:50,758 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:21:50,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:21:50,759 INFO L82 PathProgramCache]: Analyzing trace with hash -757858230, now seen corresponding path program 39 times [2020-09-04 23:21:50,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:21:50,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102268944] [2020-09-04 23:21:50,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:21:50,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:54,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:21:54,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:55,939 INFO L134 CoverageAnalysis]: Checked inductivity of 12792 backedges. 0 proven. 12792 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:21:55,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102268944] [2020-09-04 23:21:55,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:21:55,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-09-04 23:21:55,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158062247] [2020-09-04 23:21:55,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-09-04 23:21:55,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:21:55,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-09-04 23:21:55,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1807, Unknown=0, NotChecked=0, Total=1892 [2020-09-04 23:21:55,942 INFO L87 Difference]: Start difference. First operand 981 states and 981 transitions. Second operand 44 states. [2020-09-04 23:22:27,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:22:27,634 INFO L93 Difference]: Finished difference Result 1020 states and 1020 transitions. [2020-09-04 23:22:27,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-09-04 23:22:27,637 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 980 [2020-09-04 23:22:27,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:22:27,642 INFO L225 Difference]: With dead ends: 1020 [2020-09-04 23:22:27,643 INFO L226 Difference]: Without dead ends: 1012 [2020-09-04 23:22:27,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=249, Invalid=6891, Unknown=0, NotChecked=0, Total=7140 [2020-09-04 23:22:27,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-09-04 23:22:27,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 998. [2020-09-04 23:22:27,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 998 states. [2020-09-04 23:22:27,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 998 transitions. [2020-09-04 23:22:27,736 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 998 transitions. Word has length 980 [2020-09-04 23:22:27,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:22:27,737 INFO L479 AbstractCegarLoop]: Abstraction has 998 states and 998 transitions. [2020-09-04 23:22:27,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-09-04 23:22:27,737 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 998 transitions. [2020-09-04 23:22:27,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 998 [2020-09-04 23:22:27,747 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:22:27,747 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:22:27,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-09-04 23:22:27,748 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:22:27,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:22:27,748 INFO L82 PathProgramCache]: Analyzing trace with hash -517591685, now seen corresponding path program 40 times [2020-09-04 23:22:27,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:22:27,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962612341] [2020-09-04 23:22:27,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:22:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:32,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:22:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:33,451 INFO L134 CoverageAnalysis]: Checked inductivity of 13460 backedges. 0 proven. 13460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:22:33,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962612341] [2020-09-04 23:22:33,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:22:33,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-09-04 23:22:33,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260629941] [2020-09-04 23:22:33,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-09-04 23:22:33,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:22:33,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-09-04 23:22:33,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1893, Unknown=0, NotChecked=0, Total=1980 [2020-09-04 23:22:33,454 INFO L87 Difference]: Start difference. First operand 998 states and 998 transitions. Second operand 45 states. [2020-09-04 23:23:09,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:23:09,238 INFO L93 Difference]: Finished difference Result 1037 states and 1037 transitions. [2020-09-04 23:23:09,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-09-04 23:23:09,242 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 997 [2020-09-04 23:23:09,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:23:09,246 INFO L225 Difference]: With dead ends: 1037 [2020-09-04 23:23:09,246 INFO L226 Difference]: Without dead ends: 1029 [2020-09-04 23:23:09,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=255, Invalid=7227, Unknown=0, NotChecked=0, Total=7482 [2020-09-04 23:23:09,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2020-09-04 23:23:09,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 1015. [2020-09-04 23:23:09,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2020-09-04 23:23:09,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1015 transitions. [2020-09-04 23:23:09,344 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1015 transitions. Word has length 997 [2020-09-04 23:23:09,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:23:09,345 INFO L479 AbstractCegarLoop]: Abstraction has 1015 states and 1015 transitions. [2020-09-04 23:23:09,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-09-04 23:23:09,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1015 transitions. [2020-09-04 23:23:09,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1015 [2020-09-04 23:23:09,355 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:23:09,356 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:23:09,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-09-04 23:23:09,356 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:23:09,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:23:09,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1170204778, now seen corresponding path program 41 times [2020-09-04 23:23:09,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:23:09,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862940829] [2020-09-04 23:23:09,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:23:09,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:14,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:23:14,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:15,340 INFO L134 CoverageAnalysis]: Checked inductivity of 14145 backedges. 0 proven. 14145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:23:15,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862940829] [2020-09-04 23:23:15,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:23:15,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-09-04 23:23:15,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412036445] [2020-09-04 23:23:15,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-09-04 23:23:15,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:23:15,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-09-04 23:23:15,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1981, Unknown=0, NotChecked=0, Total=2070 [2020-09-04 23:23:15,343 INFO L87 Difference]: Start difference. First operand 1015 states and 1015 transitions. Second operand 46 states. [2020-09-04 23:23:55,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:23:55,115 INFO L93 Difference]: Finished difference Result 1054 states and 1054 transitions. [2020-09-04 23:23:55,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-09-04 23:23:55,117 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 1014 [2020-09-04 23:23:55,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:23:55,122 INFO L225 Difference]: With dead ends: 1054 [2020-09-04 23:23:55,123 INFO L226 Difference]: Without dead ends: 1046 [2020-09-04 23:23:55,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=261, Invalid=7571, Unknown=0, NotChecked=0, Total=7832 [2020-09-04 23:23:55,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2020-09-04 23:23:55,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1032. [2020-09-04 23:23:55,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2020-09-04 23:23:55,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1032 transitions. [2020-09-04 23:23:55,233 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1032 transitions. Word has length 1014 [2020-09-04 23:23:55,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:23:55,234 INFO L479 AbstractCegarLoop]: Abstraction has 1032 states and 1032 transitions. [2020-09-04 23:23:55,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-09-04 23:23:55,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1032 transitions. [2020-09-04 23:23:55,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1032 [2020-09-04 23:23:55,243 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:23:55,244 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:23:55,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-09-04 23:23:55,244 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:23:55,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:23:55,245 INFO L82 PathProgramCache]: Analyzing trace with hash 147032411, now seen corresponding path program 42 times [2020-09-04 23:23:55,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:23:55,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968736718] [2020-09-04 23:23:55,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:23:56,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:04,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:24:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:07,005 INFO L134 CoverageAnalysis]: Checked inductivity of 14847 backedges. 333 proven. 14514 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:24:07,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968736718] [2020-09-04 23:24:07,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:24:07,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-09-04 23:24:07,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324645806] [2020-09-04 23:24:07,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-09-04 23:24:07,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:24:07,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-09-04 23:24:07,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=2308, Unknown=0, NotChecked=0, Total=2450 [2020-09-04 23:24:07,009 INFO L87 Difference]: Start difference. First operand 1032 states and 1032 transitions. Second operand 50 states. [2020-09-04 23:24:34,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:24:34,085 INFO L93 Difference]: Finished difference Result 1041 states and 1041 transitions. [2020-09-04 23:24:34,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-09-04 23:24:34,086 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 1031 [2020-09-04 23:24:34,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:24:34,087 INFO L225 Difference]: With dead ends: 1041 [2020-09-04 23:24:34,088 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 23:24:34,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=166, Invalid=2590, Unknown=0, NotChecked=0, Total=2756 [2020-09-04 23:24:34,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 23:24:34,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 23:24:34,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 23:24:34,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 23:24:34,091 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1031 [2020-09-04 23:24:34,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:24:34,092 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 23:24:34,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-09-04 23:24:34,092 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 23:24:34,092 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 23:24:34,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-09-04 23:24:34,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 23:24:34,224 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-09-04 23:24:34,330 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-09-04 23:24:35,451 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-09-04 23:24:35,573 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-09-04 23:24:39,285 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification that was a NOOP. DAG size: 220 [2020-09-04 23:24:39,403 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-09-04 23:24:39,664 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-09-04 23:24:41,004 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification that was a NOOP. DAG size: 235 [2020-09-04 23:24:42,473 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 228 [2020-09-04 23:24:43,798 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 233 [2020-09-04 23:24:44,342 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-09-04 23:24:46,027 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-09-04 23:24:46,142 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-09-04 23:24:47,772 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification that was a NOOP. DAG size: 229 [2020-09-04 23:24:49,322 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification that was a NOOP. DAG size: 224 [2020-09-04 23:24:51,368 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-09-04 23:24:51,626 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-09-04 23:24:53,093 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 228 [2020-09-04 23:24:55,359 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-09-04 23:24:55,474 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-09-04 23:24:57,103 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification that was a NOOP. DAG size: 229 [2020-09-04 23:24:58,430 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification that was a NOOP. DAG size: 228 [2020-09-04 23:25:00,539 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-09-04 23:25:00,795 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-09-04 23:25:02,266 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification that was a NOOP. DAG size: 228 [2020-09-04 23:25:03,384 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-09-04 23:25:03,499 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-09-04 23:25:04,903 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification that was a NOOP. DAG size: 228 [2020-09-04 23:25:06,303 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification that was a NOOP. DAG size: 220 [2020-09-04 23:25:07,367 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-09-04 23:25:07,554 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-09-04 23:25:07,979 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-09-04 23:25:08,168 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-09-04 23:25:09,573 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification that was a NOOP. DAG size: 224 [2020-09-04 23:25:10,968 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 228 [2020-09-04 23:25:12,302 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification that was a NOOP. DAG size: 220 [2020-09-04 23:25:13,570 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-09-04 23:25:13,684 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-09-04 23:25:15,310 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification that was a NOOP. DAG size: 229 [2020-09-04 23:25:16,421 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-09-04 23:25:16,607 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-09-04 23:25:18,000 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 228 [2020-09-04 23:25:19,224 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:19,531 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:19,821 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:20,123 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:20,418 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:20,717 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:21,032 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:21,350 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:21,680 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:22,002 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:22,156 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 3 [2020-09-04 23:25:22,472 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:22,757 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:23,062 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:23,345 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:23,715 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 14 [2020-09-04 23:25:24,075 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 14 [2020-09-04 23:25:24,361 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:24,652 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:24,940 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:25,232 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:25,524 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:25,817 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:26,121 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:26,413 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:26,719 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:27,016 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:27,319 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:27,631 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:27,968 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:28,300 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:28,625 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:28,925 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:29,221 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:29,534 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:29,855 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:30,151 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:30,454 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:30,744 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:31,040 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:31,342 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:31,633 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:31,913 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:32,199 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:32,482 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:32,770 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:33,062 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:33,345 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:33,635 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:39,556 WARN L193 SmtUtils]: Spent 5.92 s on a formula simplification. DAG size of input: 309 DAG size of output: 223 [2020-09-04 23:25:39,707 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 4 [2020-09-04 23:25:40,103 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 14 [2020-09-04 23:25:40,402 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:40,709 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:41,088 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 14 [2020-09-04 23:25:47,380 WARN L193 SmtUtils]: Spent 6.29 s on a formula simplification. DAG size of input: 324 DAG size of output: 238 [2020-09-04 23:25:47,673 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:47,964 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:25:54,057 WARN L193 SmtUtils]: Spent 6.09 s on a formula simplification. DAG size of input: 317 DAG size of output: 231 [2020-09-04 23:26:00,228 WARN L193 SmtUtils]: Spent 6.16 s on a formula simplification. DAG size of input: 322 DAG size of output: 236 [2020-09-04 23:26:00,518 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:00,829 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:00,971 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 4 [2020-09-04 23:26:01,273 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:01,592 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:01,913 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:02,230 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:02,608 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 14 [2020-09-04 23:26:02,899 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:03,200 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:03,515 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:03,858 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:04,161 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:04,467 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:04,764 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:05,053 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:05,349 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:05,643 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:05,939 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:06,246 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:06,557 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:06,856 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:07,161 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:07,450 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:07,764 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:08,067 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:08,361 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:08,658 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:08,950 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:09,243 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:09,614 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 14 [2020-09-04 23:26:09,981 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 14 [2020-09-04 23:26:10,278 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:10,580 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:10,866 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:16,880 WARN L193 SmtUtils]: Spent 6.01 s on a formula simplification. DAG size of input: 318 DAG size of output: 228 [2020-09-04 23:26:17,176 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:17,488 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:23,272 WARN L193 SmtUtils]: Spent 5.78 s on a formula simplification. DAG size of input: 313 DAG size of output: 227 [2020-09-04 23:26:23,406 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 4 [2020-09-04 23:26:23,690 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:23,972 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:24,258 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:24,553 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:24,845 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:25,136 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:25,425 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:25,717 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:26,023 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:26,316 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:26,464 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 3 [2020-09-04 23:26:26,766 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:27,055 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:27,345 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:27,651 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:27,969 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:28,266 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:28,565 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:28,857 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:29,153 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:29,444 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:29,733 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:30,028 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:30,315 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:30,606 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:30,907 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:31,200 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:31,582 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 14 [2020-09-04 23:26:31,877 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:32,171 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:32,559 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 14 [2020-09-04 23:26:32,721 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 7 [2020-09-04 23:26:33,030 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:33,325 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:39,205 WARN L193 SmtUtils]: Spent 5.88 s on a formula simplification. DAG size of input: 317 DAG size of output: 231 [2020-09-04 23:26:39,495 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:39,787 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:39,929 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 4 [2020-09-04 23:26:40,069 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 4 [2020-09-04 23:26:40,360 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:40,648 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:40,783 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 4 [2020-09-04 23:26:41,084 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:41,372 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:41,666 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:41,952 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:42,095 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 3 [2020-09-04 23:26:42,384 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:42,672 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:42,811 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 4 [2020-09-04 23:26:43,098 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:43,391 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:43,532 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 4 [2020-09-04 23:26:43,823 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:44,115 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:44,413 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:44,705 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:45,001 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:45,292 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:45,586 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:45,882 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:46,176 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:46,468 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:46,622 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 7 [2020-09-04 23:26:46,913 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:47,205 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:47,356 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 7 [2020-09-04 23:26:47,645 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:47,942 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:48,235 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:48,536 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:48,834 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:49,198 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 14 [2020-09-04 23:26:49,563 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 14 [2020-09-04 23:26:49,857 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:50,150 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:50,442 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:26:56,369 WARN L193 SmtUtils]: Spent 5.92 s on a formula simplification. DAG size of input: 318 DAG size of output: 228 [2020-09-04 23:27:02,113 WARN L193 SmtUtils]: Spent 5.74 s on a formula simplification. DAG size of input: 317 DAG size of output: 231 [2020-09-04 23:27:02,405 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:02,697 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:02,991 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:03,289 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:03,580 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:03,871 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:04,170 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:04,461 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:04,756 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:05,055 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:05,349 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:05,641 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:05,938 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:06,234 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:06,527 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:06,818 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:07,106 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:07,376 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:07,651 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:07,926 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:08,200 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:08,481 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:08,760 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:09,037 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:09,314 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:09,590 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:09,865 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:10,139 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:10,484 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 14 [2020-09-04 23:27:10,762 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:11,038 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:11,383 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 14 [2020-09-04 23:27:11,661 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:11,934 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:17,342 WARN L193 SmtUtils]: Spent 5.40 s on a formula simplification. DAG size of input: 317 DAG size of output: 231 [2020-09-04 23:27:17,619 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:17,749 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 4 [2020-09-04 23:27:18,024 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:18,299 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:18,580 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:18,856 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:19,132 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:19,411 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:19,686 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:19,959 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:20,234 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:20,514 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:20,790 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:21,065 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:21,342 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:21,687 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 14 [2020-09-04 23:27:22,034 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 14 [2020-09-04 23:27:22,309 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:27,727 WARN L193 SmtUtils]: Spent 5.42 s on a formula simplification. DAG size of input: 317 DAG size of output: 231 [2020-09-04 23:27:28,003 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:33,363 WARN L193 SmtUtils]: Spent 5.36 s on a formula simplification. DAG size of input: 309 DAG size of output: 223 [2020-09-04 23:27:33,493 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 4 [2020-09-04 23:27:33,770 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:33,904 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 4 [2020-09-04 23:27:34,183 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:34,459 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:34,739 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:35,017 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:35,298 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:35,584 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:35,863 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:36,143 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:36,421 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:36,696 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:36,974 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:37,252 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:37,600 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 14 [2020-09-04 23:27:37,877 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:38,229 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 14 [2020-09-04 23:27:38,504 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:38,783 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:38,913 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 4 [2020-09-04 23:27:39,042 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 4 [2020-09-04 23:27:39,170 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 4 [2020-09-04 23:27:39,309 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 4 [2020-09-04 23:27:39,442 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 4 [2020-09-04 23:27:39,762 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 16 [2020-09-04 23:27:40,062 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 16 [2020-09-04 23:27:40,413 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 14 [2020-09-04 23:27:40,710 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 16 [2020-09-04 23:27:41,063 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 14 [2020-09-04 23:27:46,640 WARN L193 SmtUtils]: Spent 5.57 s on a formula simplification. DAG size of input: 313 DAG size of output: 227 [2020-09-04 23:27:46,925 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:52,352 WARN L193 SmtUtils]: Spent 5.42 s on a formula simplification. DAG size of input: 317 DAG size of output: 231 [2020-09-04 23:27:57,747 WARN L193 SmtUtils]: Spent 5.38 s on a formula simplification. DAG size of input: 309 DAG size of output: 223 [2020-09-04 23:27:58,030 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:58,160 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 4 [2020-09-04 23:27:58,442 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:58,719 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:59,001 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:59,278 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:59,558 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:27:59,841 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:28:00,124 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:28:00,436 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:28:00,708 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:28:00,977 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:28:01,245 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:28:01,516 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:28:01,785 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:28:02,053 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:28:02,326 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:28:02,668 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 14 [2020-09-04 23:28:03,008 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 14 [2020-09-04 23:28:03,278 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:28:03,555 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:28:03,829 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:28:09,342 WARN L193 SmtUtils]: Spent 5.51 s on a formula simplification. DAG size of input: 318 DAG size of output: 228 [2020-09-04 23:28:09,611 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:28:09,739 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 4 [2020-09-04 23:28:10,022 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:28:10,300 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:28:10,591 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:28:10,873 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:28:11,147 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:28:11,419 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:28:11,690 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:28:11,965 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:28:12,235 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:28:12,502 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:28:12,771 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:28:13,044 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:28:13,313 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:28:13,653 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 14 [2020-09-04 23:28:13,922 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:28:14,265 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 14 [2020-09-04 23:28:14,532 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:28:19,888 WARN L193 SmtUtils]: Spent 5.35 s on a formula simplification. DAG size of input: 317 DAG size of output: 231 [2020-09-04 23:28:20,160 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:28:20,433 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:28:20,715 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:28:20,990 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7 [2020-09-04 23:28:21,266 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 7