/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.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:10:40,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:10:40,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:10:40,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:10:40,301 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:10:40,302 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:10:40,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:10:40,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:10:40,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:10:40,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:10:40,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:10:40,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:10:40,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:10:40,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:10:40,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:10:40,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:10:40,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:10:40,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:10:40,316 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:10:40,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:10:40,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:10:40,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:10:40,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:10:40,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:10:40,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 00:10:40,325 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 00:10:40,325 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 00:10:40,326 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 00:10:40,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 00:10:40,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 00:10:40,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 00:10:40,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 00:10:40,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 00:10:40,329 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 00:10:40,330 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 00:10:40,330 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 00:10:40,331 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 00:10:40,331 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 00:10:40,332 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:10:40,332 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:10:40,333 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:10:40,334 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 00:10:40,371 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:10:40,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:10:40,373 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:10:40,373 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:10:40,373 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:10:40,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:10:40,374 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:10:40,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:10:40,374 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:10:40,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:10:40,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:10:40,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:10:40,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:10:40,375 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:10:40,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:10:40,375 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:10:40,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:10:40,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:10:40,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:10:40,376 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:10:40,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:10:40,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:10:40,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:10:40,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:10:40,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:10:40,377 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:10:40,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:10:40,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:10:40,378 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:10:40,378 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES 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: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; [2020-08-19 00:10:40,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:10:40,710 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:10:40,715 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:10:40,717 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:10:40,719 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:10:40,720 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c [2020-08-19 00:10:40,796 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/548fe34d1/f3d11cbb282a458ba0eb99ad4886daeb/FLAG6b345e6f3 [2020-08-19 00:10:41,366 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:10:41,367 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c [2020-08-19 00:10:41,396 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/548fe34d1/f3d11cbb282a458ba0eb99ad4886daeb/FLAG6b345e6f3 [2020-08-19 00:10:41,643 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/548fe34d1/f3d11cbb282a458ba0eb99ad4886daeb [2020-08-19 00:10:41,653 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:10:41,655 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:10:41,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:10:41,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:10:41,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:10:41,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:10:41" (1/1) ... [2020-08-19 00:10:41,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b54cc27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:10:41, skipping insertion in model container [2020-08-19 00:10:41,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:10:41" (1/1) ... [2020-08-19 00:10:41,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:10:41,719 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:10:42,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:10:42,162 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:10:42,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:10:42,283 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:10:42,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:10:42 WrapperNode [2020-08-19 00:10:42,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:10:42,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:10:42,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:10:42,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:10:42,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:10:42" (1/1) ... [2020-08-19 00:10:42,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:10:42" (1/1) ... [2020-08-19 00:10:42,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:10:42" (1/1) ... [2020-08-19 00:10:42,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:10:42" (1/1) ... [2020-08-19 00:10:42,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:10:42" (1/1) ... [2020-08-19 00:10:42,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:10:42" (1/1) ... [2020-08-19 00:10:42,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:10:42" (1/1) ... [2020-08-19 00:10:42,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:10:42,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:10:42,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:10:42,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:10:42,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:10:42" (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 [2020-08-19 00:10:42,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:10:42,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:10:42,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 00:10:42,440 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 00:10:42,440 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 00:10:42,440 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 00:10:42,440 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 00:10:42,441 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 00:10:42,441 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 00:10:42,441 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 00:10:42,441 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 00:10:42,441 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 00:10:42,441 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 00:10:42,442 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 00:10:42,442 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 00:10:42,442 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:10:42,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 00:10:42,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-19 00:10:42,443 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 00:10:42,443 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 00:10:42,444 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 00:10:42,444 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 00:10:42,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 00:10:42,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 00:10:42,446 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 00:10:42,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 00:10:42,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 00:10:42,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 00:10:42,448 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 00:10:42,448 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 00:10:42,448 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 00:10:42,448 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 00:10:42,449 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 00:10:42,449 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 00:10:42,449 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 00:10:42,449 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 00:10:42,449 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 00:10:42,449 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 00:10:42,449 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 00:10:42,450 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 00:10:42,450 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 00:10:42,450 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 00:10:42,450 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:10:42,450 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:10:42,451 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 00:10:42,451 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 00:10:42,451 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 00:10:42,451 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 00:10:42,451 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 00:10:42,452 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 00:10:42,452 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 00:10:42,452 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 00:10:42,453 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 00:10:42,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:10:42,454 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 00:10:42,454 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 00:10:42,455 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 00:10:42,455 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 00:10:42,455 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 00:10:42,455 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 00:10:42,455 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 00:10:42,456 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 00:10:42,456 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 00:10:42,456 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 00:10:42,456 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:10:42,456 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 00:10:42,456 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 00:10:42,457 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-19 00:10:42,457 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 00:10:42,457 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 00:10:42,457 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 00:10:42,458 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 00:10:42,458 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 00:10:42,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 00:10:42,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 00:10:42,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:10:42,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 00:10:42,461 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 00:10:42,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:10:42,461 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 00:10:42,462 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 00:10:42,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:10:42,463 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 00:10:42,463 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 00:10:42,463 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 00:10:42,463 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 00:10:42,463 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 00:10:42,463 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 00:10:42,464 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 00:10:42,464 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 00:10:42,464 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 00:10:42,464 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 00:10:42,464 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 00:10:42,464 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 00:10:42,464 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 00:10:42,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:10:42,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 00:10:42,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:10:43,594 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:10:43,595 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 00:10:43,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:10:43 BoogieIcfgContainer [2020-08-19 00:10:43,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:10:43,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:10:43,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:10:43,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:10:43,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:10:41" (1/3) ... [2020-08-19 00:10:43,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74266799 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:10:43, skipping insertion in model container [2020-08-19 00:10:43,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:10:42" (2/3) ... [2020-08-19 00:10:43,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74266799 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:10:43, skipping insertion in model container [2020-08-19 00:10:43,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:10:43" (3/3) ... [2020-08-19 00:10:43,619 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product54.cil.c [2020-08-19 00:10:43,630 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:10:43,640 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:10:43,655 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:10:43,685 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:10:43,685 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:10:43,685 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:10:43,685 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:10:43,686 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:10:43,686 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:10:43,686 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:10:43,686 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:10:43,709 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2020-08-19 00:10:43,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 00:10:43,722 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:10:43,723 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] [2020-08-19 00:10:43,723 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:10:43,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:10:43,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1727770094, now seen corresponding path program 1 times [2020-08-19 00:10:43,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:10:43,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891407182] [2020-08-19 00:10:43,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:10:44,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:44,456 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:10:44,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:10:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:44,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:10:44,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:44,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:10:44,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:44,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:10:44,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:44,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:10:44,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:44,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:10:44,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:44,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:10:44,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:44,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:10:44,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:44,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:10:44,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891407182] [2020-08-19 00:10:44,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:10:44,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 00:10:44,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344487210] [2020-08-19 00:10:44,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 00:10:44,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:10:44,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 00:10:44,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:10:44,600 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 3 states. [2020-08-19 00:10:45,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:10:45,836 INFO L93 Difference]: Finished difference Result 350 states and 455 transitions. [2020-08-19 00:10:45,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 00:10:45,838 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-19 00:10:45,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:10:45,856 INFO L225 Difference]: With dead ends: 350 [2020-08-19 00:10:45,857 INFO L226 Difference]: Without dead ends: 188 [2020-08-19 00:10:45,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:10:45,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-08-19 00:10:45,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 153. [2020-08-19 00:10:45,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-19 00:10:45,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 181 transitions. [2020-08-19 00:10:45,969 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 181 transitions. Word has length 52 [2020-08-19 00:10:45,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:10:45,970 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 181 transitions. [2020-08-19 00:10:45,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 00:10:45,970 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 181 transitions. [2020-08-19 00:10:45,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 00:10:45,974 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:10:45,974 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] [2020-08-19 00:10:45,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:10:45,975 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:10:45,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:10:45,975 INFO L82 PathProgramCache]: Analyzing trace with hash -23295260, now seen corresponding path program 1 times [2020-08-19 00:10:45,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:10:45,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130304305] [2020-08-19 00:10:45,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:10:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:46,308 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:10:46,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:10:46,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:46,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:10:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:46,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:10:46,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:46,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:10:46,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:46,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:10:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:46,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 00:10:46,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:46,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 00:10:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:46,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 00:10:46,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:46,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:10:46,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130304305] [2020-08-19 00:10:46,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:10:46,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:10:46,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836737082] [2020-08-19 00:10:46,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:10:46,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:10:46,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:10:46,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:10:46,356 INFO L87 Difference]: Start difference. First operand 153 states and 181 transitions. Second operand 4 states. [2020-08-19 00:10:46,743 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:10:47,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:10:47,682 INFO L93 Difference]: Finished difference Result 279 states and 342 transitions. [2020-08-19 00:10:47,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 00:10:47,683 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-19 00:10:47,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:10:47,687 INFO L225 Difference]: With dead ends: 279 [2020-08-19 00:10:47,687 INFO L226 Difference]: Without dead ends: 172 [2020-08-19 00:10:47,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:10:47,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-19 00:10:47,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 144. [2020-08-19 00:10:47,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-19 00:10:47,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 169 transitions. [2020-08-19 00:10:47,731 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 169 transitions. Word has length 53 [2020-08-19 00:10:47,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:10:47,731 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 169 transitions. [2020-08-19 00:10:47,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:10:47,732 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 169 transitions. [2020-08-19 00:10:47,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-19 00:10:47,734 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:10:47,735 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] [2020-08-19 00:10:47,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:10:47,735 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:10:47,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:10:47,735 INFO L82 PathProgramCache]: Analyzing trace with hash 646991369, now seen corresponding path program 1 times [2020-08-19 00:10:47,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:10:47,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861007377] [2020-08-19 00:10:47,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:10:47,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:48,082 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:10:48,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:10:48,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:48,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:10:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:48,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:10:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:48,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:10:48,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:48,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:10:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:48,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:10:48,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:48,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:10:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:48,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 00:10:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:48,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:10:48,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861007377] [2020-08-19 00:10:48,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:10:48,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:10:48,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196186419] [2020-08-19 00:10:48,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:10:48,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:10:48,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:10:48,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:10:48,172 INFO L87 Difference]: Start difference. First operand 144 states and 169 transitions. Second operand 8 states. [2020-08-19 00:10:48,506 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:10:48,806 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:10:49,051 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:10:49,298 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:10:50,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:10:50,712 INFO L93 Difference]: Finished difference Result 292 states and 360 transitions. [2020-08-19 00:10:50,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 00:10:50,714 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-19 00:10:50,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:10:50,717 INFO L225 Difference]: With dead ends: 292 [2020-08-19 00:10:50,717 INFO L226 Difference]: Without dead ends: 172 [2020-08-19 00:10:50,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 00:10:50,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-19 00:10:50,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 144. [2020-08-19 00:10:50,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-19 00:10:50,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 168 transitions. [2020-08-19 00:10:50,759 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 168 transitions. Word has length 58 [2020-08-19 00:10:50,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:10:50,760 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 168 transitions. [2020-08-19 00:10:50,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:10:50,760 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 168 transitions. [2020-08-19 00:10:50,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-08-19 00:10:50,763 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:10:50,763 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] [2020-08-19 00:10:50,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:10:50,764 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:10:50,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:10:50,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1077665999, now seen corresponding path program 1 times [2020-08-19 00:10:50,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:10:50,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979023645] [2020-08-19 00:10:50,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:10:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:51,060 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:10:51,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:10:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:51,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:10:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:51,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:10:51,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:51,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:10:51,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:51,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:10:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:51,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 00:10:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:51,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:10:51,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:51,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:10:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:51,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:10:51,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:51,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 00:10:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:51,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-19 00:10:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:51,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-19 00:10:51,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:51,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:10:51,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979023645] [2020-08-19 00:10:51,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:10:51,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 00:10:51,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691008022] [2020-08-19 00:10:51,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 00:10:51,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:10:51,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 00:10:51,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 00:10:51,169 INFO L87 Difference]: Start difference. First operand 144 states and 168 transitions. Second operand 6 states. [2020-08-19 00:10:51,504 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:10:52,820 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:10:53,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:10:53,652 INFO L93 Difference]: Finished difference Result 407 states and 503 transitions. [2020-08-19 00:10:53,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 00:10:53,653 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-08-19 00:10:53,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:10:53,657 INFO L225 Difference]: With dead ends: 407 [2020-08-19 00:10:53,658 INFO L226 Difference]: Without dead ends: 287 [2020-08-19 00:10:53,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-19 00:10:53,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-08-19 00:10:53,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 244. [2020-08-19 00:10:53,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-19 00:10:53,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 277 transitions. [2020-08-19 00:10:53,712 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 277 transitions. Word has length 76 [2020-08-19 00:10:53,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:10:53,713 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 277 transitions. [2020-08-19 00:10:53,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 00:10:53,713 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 277 transitions. [2020-08-19 00:10:53,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-19 00:10:53,715 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:10:53,715 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] [2020-08-19 00:10:53,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:10:53,715 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:10:53,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:10:53,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1489636928, now seen corresponding path program 1 times [2020-08-19 00:10:53,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:10:53,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825419361] [2020-08-19 00:10:53,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:10:53,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:54,006 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:10:54,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:10:54,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:54,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:10:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:54,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:10:54,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:54,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:10:54,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:54,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:10:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:54,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 00:10:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:54,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:10:54,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:54,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:10:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:54,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:10:54,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:54,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:10:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:54,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:10:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:54,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 00:10:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:54,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 00:10:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:54,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-19 00:10:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:54,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:10:54,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825419361] [2020-08-19 00:10:54,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:10:54,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:10:54,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065177516] [2020-08-19 00:10:54,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:10:54,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:10:54,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:10:54,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:10:54,101 INFO L87 Difference]: Start difference. First operand 244 states and 277 transitions. Second operand 8 states. [2020-08-19 00:10:54,431 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:10:55,761 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:10:56,042 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:10:56,306 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:10:56,524 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:10:57,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:10:57,378 INFO L93 Difference]: Finished difference Result 641 states and 791 transitions. [2020-08-19 00:10:57,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 00:10:57,379 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2020-08-19 00:10:57,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:10:57,383 INFO L225 Difference]: With dead ends: 641 [2020-08-19 00:10:57,385 INFO L226 Difference]: Without dead ends: 421 [2020-08-19 00:10:57,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-19 00:10:57,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-08-19 00:10:57,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 378. [2020-08-19 00:10:57,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-08-19 00:10:57,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 436 transitions. [2020-08-19 00:10:57,485 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 436 transitions. Word has length 90 [2020-08-19 00:10:57,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:10:57,486 INFO L479 AbstractCegarLoop]: Abstraction has 378 states and 436 transitions. [2020-08-19 00:10:57,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:10:57,486 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 436 transitions. [2020-08-19 00:10:57,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-19 00:10:57,488 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:10:57,488 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] [2020-08-19 00:10:57,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:10:57,488 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:10:57,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:10:57,489 INFO L82 PathProgramCache]: Analyzing trace with hash -467189990, now seen corresponding path program 1 times [2020-08-19 00:10:57,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:10:57,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344075719] [2020-08-19 00:10:57,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:10:57,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:57,740 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:10:57,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:10:57,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:57,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:10:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:57,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:10:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:57,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:10:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:57,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:10:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:57,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 00:10:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:57,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 00:10:57,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:57,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:10:57,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:57,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:10:57,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:57,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:10:57,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:57,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:10:57,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:57,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:10:57,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:57,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 00:10:57,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:57,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 00:10:57,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:57,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-19 00:10:57,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:57,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:10:57,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344075719] [2020-08-19 00:10:57,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:10:57,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:10:57,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031057321] [2020-08-19 00:10:57,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:10:57,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:10:57,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:10:57,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:10:57,912 INFO L87 Difference]: Start difference. First operand 378 states and 436 transitions. Second operand 9 states. [2020-08-19 00:10:58,269 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:10:58,770 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:11:00,394 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:11:02,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:11:02,452 INFO L93 Difference]: Finished difference Result 980 states and 1245 transitions. [2020-08-19 00:11:02,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 00:11:02,452 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-08-19 00:11:02,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:11:02,459 INFO L225 Difference]: With dead ends: 980 [2020-08-19 00:11:02,459 INFO L226 Difference]: Without dead ends: 749 [2020-08-19 00:11:02,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-19 00:11:02,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-19 00:11:02,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 678. [2020-08-19 00:11:02,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-08-19 00:11:02,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 813 transitions. [2020-08-19 00:11:02,603 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 813 transitions. Word has length 94 [2020-08-19 00:11:02,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:11:02,604 INFO L479 AbstractCegarLoop]: Abstraction has 678 states and 813 transitions. [2020-08-19 00:11:02,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:11:02,604 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 813 transitions. [2020-08-19 00:11:02,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-19 00:11:02,606 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:11:02,606 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] [2020-08-19 00:11:02,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 00:11:02,606 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:11:02,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:11:02,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1892117019, now seen corresponding path program 1 times [2020-08-19 00:11:02,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:11:02,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690761867] [2020-08-19 00:11:02,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:11:02,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:02,831 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:11:02,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:11:02,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:02,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:11:02,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:02,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:11:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:02,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:11:02,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:02,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:11:02,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:02,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 00:11:02,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:02,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 00:11:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:02,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:11:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:02,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:11:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:02,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:11:02,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:02,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:11:02,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:02,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:11:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:02,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 00:11:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:02,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 00:11:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:02,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-19 00:11:02,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:02,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:11:02,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690761867] [2020-08-19 00:11:02,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:11:02,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:11:02,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728037537] [2020-08-19 00:11:02,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:11:02,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:11:02,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:11:02,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:11:02,975 INFO L87 Difference]: Start difference. First operand 678 states and 813 transitions. Second operand 8 states. [2020-08-19 00:11:03,724 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:11:03,961 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:11:04,192 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:11:05,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:11:05,459 INFO L93 Difference]: Finished difference Result 1250 states and 1552 transitions. [2020-08-19 00:11:05,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 00:11:05,460 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-08-19 00:11:05,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:11:05,466 INFO L225 Difference]: With dead ends: 1250 [2020-08-19 00:11:05,466 INFO L226 Difference]: Without dead ends: 723 [2020-08-19 00:11:05,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-19 00:11:05,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-08-19 00:11:05,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 678. [2020-08-19 00:11:05,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-08-19 00:11:05,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 812 transitions. [2020-08-19 00:11:05,610 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 812 transitions. Word has length 94 [2020-08-19 00:11:05,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:11:05,611 INFO L479 AbstractCegarLoop]: Abstraction has 678 states and 812 transitions. [2020-08-19 00:11:05,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:11:05,611 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 812 transitions. [2020-08-19 00:11:05,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-19 00:11:05,613 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:11:05,613 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] [2020-08-19 00:11:05,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 00:11:05,614 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:11:05,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:11:05,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1743318755, now seen corresponding path program 1 times [2020-08-19 00:11:05,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:11:05,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344489951] [2020-08-19 00:11:05,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:11:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:05,990 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:11:05,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:11:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:06,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:11:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:06,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:11:06,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:06,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:11:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:06,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:11:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:06,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 00:11:06,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:06,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 00:11:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:06,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:11:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:06,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:11:06,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:06,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:11:06,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:06,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:11:06,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:06,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:11:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:06,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 00:11:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:06,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 00:11:06,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:06,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-19 00:11:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:06,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:11:06,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344489951] [2020-08-19 00:11:06,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:11:06,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 00:11:06,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625135024] [2020-08-19 00:11:06,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 00:11:06,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:11:06,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 00:11:06,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 00:11:06,162 INFO L87 Difference]: Start difference. First operand 678 states and 812 transitions. Second operand 12 states. [2020-08-19 00:11:06,652 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:11:06,904 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:11:07,140 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:11:07,868 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:11:08,106 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:11:08,372 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:11:08,611 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:11:10,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:11:10,034 INFO L93 Difference]: Finished difference Result 1343 states and 1658 transitions. [2020-08-19 00:11:10,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 00:11:10,035 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-08-19 00:11:10,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:11:10,041 INFO L225 Difference]: With dead ends: 1343 [2020-08-19 00:11:10,041 INFO L226 Difference]: Without dead ends: 689 [2020-08-19 00:11:10,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-19 00:11:10,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2020-08-19 00:11:10,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 649. [2020-08-19 00:11:10,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-19 00:11:10,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 772 transitions. [2020-08-19 00:11:10,170 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 772 transitions. Word has length 94 [2020-08-19 00:11:10,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:11:10,171 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 772 transitions. [2020-08-19 00:11:10,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 00:11:10,171 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 772 transitions. [2020-08-19 00:11:10,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-19 00:11:10,174 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:11:10,174 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] [2020-08-19 00:11:10,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 00:11:10,174 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:11:10,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:11:10,175 INFO L82 PathProgramCache]: Analyzing trace with hash -794227168, now seen corresponding path program 1 times [2020-08-19 00:11:10,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:11:10,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042342684] [2020-08-19 00:11:10,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:11:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:10,483 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:11:10,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:11:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:10,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:11:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:10,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:11:10,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:10,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:11:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:10,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:11:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:10,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 00:11:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:10,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 00:11:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:10,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:11:10,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:10,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:11:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:10,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:11:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:10,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:11:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:10,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:11:10,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:10,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 00:11:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:10,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 00:11:10,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:10,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 00:11:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:10,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:11:10,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042342684] [2020-08-19 00:11:10,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:11:10,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-19 00:11:10,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873407061] [2020-08-19 00:11:10,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 00:11:10,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:11:10,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 00:11:10,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-19 00:11:10,662 INFO L87 Difference]: Start difference. First operand 649 states and 772 transitions. Second operand 13 states. [2020-08-19 00:11:11,254 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:11:11,502 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:11:11,734 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:11:12,809 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:11:13,467 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:11:13,814 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:11:14,085 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:11:14,854 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:11:15,184 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:11:15,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:11:15,748 INFO L93 Difference]: Finished difference Result 1307 states and 1571 transitions. [2020-08-19 00:11:15,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-19 00:11:15,749 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 95 [2020-08-19 00:11:15,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:11:15,756 INFO L225 Difference]: With dead ends: 1307 [2020-08-19 00:11:15,756 INFO L226 Difference]: Without dead ends: 682 [2020-08-19 00:11:15,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2020-08-19 00:11:15,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2020-08-19 00:11:15,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 649. [2020-08-19 00:11:15,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-19 00:11:15,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 756 transitions. [2020-08-19 00:11:15,878 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 756 transitions. Word has length 95 [2020-08-19 00:11:15,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:11:15,880 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 756 transitions. [2020-08-19 00:11:15,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 00:11:15,880 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 756 transitions. [2020-08-19 00:11:15,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-19 00:11:15,885 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:11:15,885 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:11:15,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 00:11:15,886 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:11:15,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:11:15,886 INFO L82 PathProgramCache]: Analyzing trace with hash -252196105, now seen corresponding path program 1 times [2020-08-19 00:11:15,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:11:15,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367172570] [2020-08-19 00:11:15,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:11:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:16,193 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:11:16,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:11:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:16,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:11:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:16,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:11:16,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:16,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:11:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:16,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:11:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:16,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 00:11:16,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:16,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:11:16,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:16,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:11:16,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:16,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:11:16,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:16,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:11:16,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:16,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:11:16,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:16,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:11:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:16,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 00:11:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:16,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:11:16,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:16,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-19 00:11:16,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:16,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-19 00:11:16,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:16,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:11:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:16,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:11:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:16,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 00:11:16,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:16,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 00:11:16,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:16,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-19 00:11:16,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:16,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-19 00:11:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:16,435 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-19 00:11:16,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367172570] [2020-08-19 00:11:16,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:11:16,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 00:11:16,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121226724] [2020-08-19 00:11:16,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 00:11:16,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:11:16,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 00:11:16,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:11:16,438 INFO L87 Difference]: Start difference. First operand 649 states and 756 transitions. Second operand 10 states. [2020-08-19 00:11:17,314 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:11:17,550 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:11:17,783 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:11:18,006 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:11:19,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:11:19,014 INFO L93 Difference]: Finished difference Result 1216 states and 1446 transitions. [2020-08-19 00:11:19,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 00:11:19,015 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 139 [2020-08-19 00:11:19,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:11:19,019 INFO L225 Difference]: With dead ends: 1216 [2020-08-19 00:11:19,019 INFO L226 Difference]: Without dead ends: 670 [2020-08-19 00:11:19,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 00:11:19,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-08-19 00:11:19,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 649. [2020-08-19 00:11:19,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-19 00:11:19,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 754 transitions. [2020-08-19 00:11:19,137 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 754 transitions. Word has length 139 [2020-08-19 00:11:19,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:11:19,138 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 754 transitions. [2020-08-19 00:11:19,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 00:11:19,138 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 754 transitions. [2020-08-19 00:11:19,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-19 00:11:19,140 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:11:19,140 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:11:19,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 00:11:19,141 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:11:19,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:11:19,141 INFO L82 PathProgramCache]: Analyzing trace with hash 2084196405, now seen corresponding path program 1 times [2020-08-19 00:11:19,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:11:19,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760008665] [2020-08-19 00:11:19,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:11:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:19,433 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:11:19,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:11:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:19,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:11:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:19,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:11:19,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:19,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:11:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:19,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:11:19,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:19,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 00:11:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:19,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:11:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:19,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:11:19,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:19,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:11:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:19,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:11:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:19,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:11:19,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:19,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:11:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:19,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 00:11:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:19,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:11:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:19,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-19 00:11:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:19,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-19 00:11:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:19,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:11:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:19,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:11:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:19,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 00:11:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:19,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 00:11:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:19,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-19 00:11:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:19,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-19 00:11:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:19,663 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-19 00:11:19,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760008665] [2020-08-19 00:11:19,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:11:19,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 00:11:19,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97180261] [2020-08-19 00:11:19,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 00:11:19,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:11:19,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 00:11:19,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-19 00:11:19,665 INFO L87 Difference]: Start difference. First operand 649 states and 754 transitions. Second operand 12 states. [2020-08-19 00:11:20,130 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:11:20,363 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:11:20,580 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:11:21,202 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:11:21,456 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:11:21,674 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:11:22,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:11:22,819 INFO L93 Difference]: Finished difference Result 1124 states and 1336 transitions. [2020-08-19 00:11:22,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 00:11:22,820 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 139 [2020-08-19 00:11:22,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:11:22,823 INFO L225 Difference]: With dead ends: 1124 [2020-08-19 00:11:22,823 INFO L226 Difference]: Without dead ends: 573 [2020-08-19 00:11:22,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 00:11:22,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2020-08-19 00:11:22,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 552. [2020-08-19 00:11:22,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-08-19 00:11:22,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 639 transitions. [2020-08-19 00:11:22,922 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 639 transitions. Word has length 139 [2020-08-19 00:11:22,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:11:22,922 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 639 transitions. [2020-08-19 00:11:22,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 00:11:22,923 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 639 transitions. [2020-08-19 00:11:22,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-19 00:11:22,925 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:11:22,926 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:11:22,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 00:11:22,926 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:11:22,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:11:22,926 INFO L82 PathProgramCache]: Analyzing trace with hash 2081124794, now seen corresponding path program 1 times [2020-08-19 00:11:22,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:11:22,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75388267] [2020-08-19 00:11:22,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:11:22,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:23,227 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:11:23,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:11:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:23,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:11:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:23,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:11:23,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:23,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:11:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:23,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:11:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:23,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 00:11:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:23,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:11:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:23,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:11:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:23,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:11:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:23,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:11:23,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:23,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:11:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:23,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:11:23,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:23,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:11:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:23,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 00:11:23,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:23,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:11:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:23,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-19 00:11:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:23,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-19 00:11:23,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:23,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:11:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:23,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:11:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:23,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 00:11:23,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:23,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-19 00:11:23,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:23,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 00:11:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:23,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-19 00:11:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:23,498 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-08-19 00:11:23,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75388267] [2020-08-19 00:11:23,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:11:23,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 00:11:23,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542920996] [2020-08-19 00:11:23,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 00:11:23,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:11:23,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 00:11:23,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-19 00:11:23,502 INFO L87 Difference]: Start difference. First operand 552 states and 639 transitions. Second operand 11 states. [2020-08-19 00:11:23,998 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:11:24,861 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:11:25,794 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:11:26,301 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-19 00:11:26,777 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-19 00:11:27,015 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:11:28,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:11:28,618 INFO L93 Difference]: Finished difference Result 1637 states and 1961 transitions. [2020-08-19 00:11:28,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 00:11:28,619 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 143 [2020-08-19 00:11:28,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:11:28,625 INFO L225 Difference]: With dead ends: 1637 [2020-08-19 00:11:28,625 INFO L226 Difference]: Without dead ends: 1109 [2020-08-19 00:11:28,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2020-08-19 00:11:28,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2020-08-19 00:11:28,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1077. [2020-08-19 00:11:28,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077 states. [2020-08-19 00:11:28,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1232 transitions. [2020-08-19 00:11:28,843 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1232 transitions. Word has length 143 [2020-08-19 00:11:28,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:11:28,845 INFO L479 AbstractCegarLoop]: Abstraction has 1077 states and 1232 transitions. [2020-08-19 00:11:28,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 00:11:28,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1232 transitions. [2020-08-19 00:11:28,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-19 00:11:28,849 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:11:28,849 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:11:28,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 00:11:28,850 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:11:28,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:11:28,850 INFO L82 PathProgramCache]: Analyzing trace with hash -708969378, now seen corresponding path program 1 times [2020-08-19 00:11:28,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:11:28,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530206127] [2020-08-19 00:11:28,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:11:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:29,146 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:11:29,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:11:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:29,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:11:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:29,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:11:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:29,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:11:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:29,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:11:29,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:29,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 00:11:29,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:29,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:11:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:29,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 00:11:29,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:29,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:11:29,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:29,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:11:29,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:29,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:11:29,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:29,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:11:29,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:29,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:11:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:29,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:11:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:29,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 00:11:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:29,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:11:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:29,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-19 00:11:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:29,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 00:11:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:29,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:11:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:29,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:11:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:29,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 00:11:29,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:29,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-19 00:11:29,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:29,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-19 00:11:29,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:29,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-19 00:11:29,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:29,359 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 00:11:29,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530206127] [2020-08-19 00:11:29,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:11:29,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 00:11:29,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530166285] [2020-08-19 00:11:29,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 00:11:29,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:11:29,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 00:11:29,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-19 00:11:29,363 INFO L87 Difference]: Start difference. First operand 1077 states and 1232 transitions. Second operand 15 states. [2020-08-19 00:11:30,142 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:11:30,371 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:11:30,588 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:11:31,162 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:11:32,240 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:11:32,560 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:11:32,829 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:11:33,103 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:11:35,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:11:35,102 INFO L93 Difference]: Finished difference Result 2187 states and 2605 transitions. [2020-08-19 00:11:35,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-19 00:11:35,102 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 147 [2020-08-19 00:11:35,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:11:35,109 INFO L225 Difference]: With dead ends: 2187 [2020-08-19 00:11:35,109 INFO L226 Difference]: Without dead ends: 1134 [2020-08-19 00:11:35,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=227, Invalid=765, Unknown=0, NotChecked=0, Total=992 [2020-08-19 00:11:35,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2020-08-19 00:11:35,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1011. [2020-08-19 00:11:35,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1011 states. [2020-08-19 00:11:35,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1153 transitions. [2020-08-19 00:11:35,302 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1153 transitions. Word has length 147 [2020-08-19 00:11:35,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:11:35,303 INFO L479 AbstractCegarLoop]: Abstraction has 1011 states and 1153 transitions. [2020-08-19 00:11:35,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 00:11:35,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1153 transitions. [2020-08-19 00:11:35,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-19 00:11:35,306 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:11:35,306 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:11:35,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 00:11:35,307 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:11:35,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:11:35,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1161992490, now seen corresponding path program 1 times [2020-08-19 00:11:35,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:11:35,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545844850] [2020-08-19 00:11:35,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:11:35,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:35,561 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:11:35,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:11:35,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:35,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:11:35,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:35,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:11:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:35,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:11:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:35,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:11:35,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:35,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 00:11:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:35,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:11:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:35,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:11:35,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:35,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:11:35,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:35,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:11:35,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:35,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:11:35,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:35,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:11:35,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:35,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:11:35,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:35,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 00:11:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:35,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:11:35,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:35,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 00:11:35,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:35,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-19 00:11:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:35,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-19 00:11:35,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:35,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:11:35,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:35,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:11:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:35,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 00:11:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:35,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 00:11:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:35,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-19 00:11:35,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:35,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-19 00:11:35,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:11:35,874 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-08-19 00:11:35,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545844850] [2020-08-19 00:11:35,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:11:35,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 00:11:35,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915571072] [2020-08-19 00:11:35,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 00:11:35,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:11:35,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 00:11:35,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-19 00:11:35,876 INFO L87 Difference]: Start difference. First operand 1011 states and 1153 transitions. Second operand 15 states. [2020-08-19 00:11:36,639 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:11:37,409 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:11:38,632 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:11:38,989 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189