/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 04:34:03,295 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 04:34:03,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 04:34:03,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 04:34:03,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 04:34:03,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 04:34:03,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 04:34:03,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 04:34:03,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 04:34:03,354 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 04:34:03,355 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 04:34:03,356 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 04:34:03,356 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 04:34:03,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 04:34:03,361 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 04:34:03,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 04:34:03,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 04:34:03,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 04:34:03,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 04:34:03,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 04:34:03,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 04:34:03,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 04:34:03,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 04:34:03,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 04:34:03,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 04:34:03,397 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 04:34:03,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 04:34:03,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 04:34:03,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 04:34:03,403 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 04:34:03,403 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 04:34:03,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 04:34:03,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 04:34:03,405 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 04:34:03,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 04:34:03,406 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 04:34:03,407 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 04:34:03,407 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 04:34:03,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 04:34:03,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 04:34:03,412 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 04:34:03,413 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 [2020-08-22 04:34:03,450 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 04:34:03,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 04:34:03,452 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 04:34:03,453 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 04:34:03,453 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 04:34:03,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 04:34:03,453 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 04:34:03,454 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 04:34:03,454 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 04:34:03,454 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 04:34:03,455 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 04:34:03,455 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 04:34:03,455 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 04:34:03,456 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 04:34:03,457 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 04:34:03,457 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 04:34:03,457 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 04:34:03,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 04:34:03,457 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 04:34:03,458 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 04:34:03,458 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 04:34:03,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:34:03,458 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 04:34:03,459 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 04:34:03,459 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 04:34:03,459 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 04:34:03,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 04:34:03,459 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 04:34:03,460 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 04:34:03,460 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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-08-22 04:34:03,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 04:34:03,763 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 04:34:03,766 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 04:34:03,768 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 04:34:03,768 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 04:34:03,769 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c [2020-08-22 04:34:03,831 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dfc4b22b3/f3ca150b54514006ad04cf698472b9b5/FLAG236406586 [2020-08-22 04:34:04,388 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 04:34:04,389 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c [2020-08-22 04:34:04,412 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dfc4b22b3/f3ca150b54514006ad04cf698472b9b5/FLAG236406586 [2020-08-22 04:34:04,687 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dfc4b22b3/f3ca150b54514006ad04cf698472b9b5 [2020-08-22 04:34:04,695 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 04:34:04,696 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 04:34:04,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 04:34:04,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 04:34:04,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 04:34:04,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:34:04" (1/1) ... [2020-08-22 04:34:04,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@750e1b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:04, skipping insertion in model container [2020-08-22 04:34:04,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:34:04" (1/1) ... [2020-08-22 04:34:04,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 04:34:04,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 04:34:05,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:34:05,174 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 04:34:05,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:34:05,296 INFO L208 MainTranslator]: Completed translation [2020-08-22 04:34:05,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:05 WrapperNode [2020-08-22 04:34:05,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 04:34:05,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 04:34:05,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 04:34:05,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 04:34:05,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:05" (1/1) ... [2020-08-22 04:34:05,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:05" (1/1) ... [2020-08-22 04:34:05,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:05" (1/1) ... [2020-08-22 04:34:05,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:05" (1/1) ... [2020-08-22 04:34:05,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:05" (1/1) ... [2020-08-22 04:34:05,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:05" (1/1) ... [2020-08-22 04:34:05,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:05" (1/1) ... [2020-08-22 04:34:05,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 04:34:05,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 04:34:05,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 04:34:05,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 04:34:05,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:05" (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 [2020-08-22 04:34:05,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 04:34:05,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 04:34:05,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 04:34:05,457 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 04:34:05,457 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 04:34:05,458 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 04:34:05,458 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 04:34:05,458 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 04:34:05,458 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 04:34:05,459 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 04:34:05,459 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 04:34:05,459 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 04:34:05,459 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 04:34:05,459 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 04:34:05,460 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 04:34:05,460 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 04:34:05,460 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 04:34:05,460 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 04:34:05,460 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 04:34:05,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 04:34:05,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 04:34:05,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 04:34:05,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-22 04:34:05,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-22 04:34:05,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-22 04:34:05,462 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 04:34:05,462 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 04:34:05,462 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 04:34:05,462 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 04:34:05,462 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 04:34:05,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 04:34:05,462 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 04:34:05,463 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 04:34:05,463 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 04:34:05,463 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 04:34:05,463 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 04:34:05,463 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 04:34:05,463 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 04:34:05,464 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 04:34:05,464 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 04:34:05,464 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 04:34:05,464 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 04:34:05,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 04:34:05,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 04:34:05,465 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 04:34:05,465 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 04:34:05,465 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 04:34:05,465 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 04:34:05,465 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 04:34:05,465 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 04:34:05,465 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 04:34:05,466 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 04:34:05,466 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 04:34:05,466 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 04:34:05,466 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 04:34:05,466 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 04:34:05,466 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-22 04:34:05,467 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-22 04:34:05,467 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 04:34:05,467 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 04:34:05,467 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 04:34:05,467 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 04:34:05,467 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 04:34:05,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 04:34:05,468 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 04:34:05,468 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 04:34:05,468 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 04:34:05,468 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 04:34:05,468 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 04:34:05,468 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 04:34:05,469 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 04:34:05,469 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 04:34:05,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 04:34:05,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 04:34:05,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 04:34:05,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 04:34:05,470 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 04:34:05,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 04:34:05,470 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 04:34:05,470 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 04:34:05,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 04:34:05,470 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 04:34:05,471 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 04:34:05,471 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 04:34:05,471 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 04:34:05,471 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 04:34:05,471 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-22 04:34:05,471 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 04:34:05,471 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 04:34:05,472 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 04:34:05,472 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 04:34:05,472 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 04:34:05,472 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 04:34:05,472 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 04:34:05,472 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 04:34:05,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 04:34:05,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 04:34:05,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 04:34:06,471 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 04:34:06,472 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 04:34:06,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:34:06 BoogieIcfgContainer [2020-08-22 04:34:06,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 04:34:06,479 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 04:34:06,479 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 04:34:06,482 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 04:34:06,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:34:04" (1/3) ... [2020-08-22 04:34:06,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500c8aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:34:06, skipping insertion in model container [2020-08-22 04:34:06,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:34:05" (2/3) ... [2020-08-22 04:34:06,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500c8aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:34:06, skipping insertion in model container [2020-08-22 04:34:06,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:34:06" (3/3) ... [2020-08-22 04:34:06,486 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product40.cil.c [2020-08-22 04:34:06,497 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 04:34:06,505 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 04:34:06,519 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 04:34:06,546 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 04:34:06,547 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 04:34:06,547 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 04:34:06,547 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 04:34:06,547 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 04:34:06,548 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 04:34:06,548 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 04:34:06,548 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 04:34:06,571 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2020-08-22 04:34:06,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 04:34:06,582 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:34:06,583 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 04:34:06,584 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:34:06,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:34:06,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1231866733, now seen corresponding path program 1 times [2020-08-22 04:34:06,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:34:06,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846983704] [2020-08-22 04:34:06,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:34:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:07,252 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:34:07,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:34:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:07,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:34:07,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:07,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:34:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:07,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:34:07,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:07,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:34:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:07,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:34:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:07,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:34:07,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:07,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:34:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:07,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 04:34:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:07,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 04:34:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:07,430 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 04:34:07,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846983704] [2020-08-22 04:34:07,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:34:07,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:34:07,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668482396] [2020-08-22 04:34:07,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:34:07,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:34:07,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:34:07,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:34:07,458 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 4 states. [2020-08-22 04:34:08,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:34:08,641 INFO L93 Difference]: Finished difference Result 324 states and 416 transitions. [2020-08-22 04:34:08,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 04:34:08,644 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-22 04:34:08,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:34:08,660 INFO L225 Difference]: With dead ends: 324 [2020-08-22 04:34:08,661 INFO L226 Difference]: Without dead ends: 179 [2020-08-22 04:34:08,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:34:08,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-22 04:34:08,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 146. [2020-08-22 04:34:08,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-08-22 04:34:08,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 171 transitions. [2020-08-22 04:34:08,785 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 171 transitions. Word has length 59 [2020-08-22 04:34:08,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:34:08,786 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 171 transitions. [2020-08-22 04:34:08,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:34:08,786 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 171 transitions. [2020-08-22 04:34:08,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-22 04:34:08,792 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:34:08,793 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 04:34:08,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 04:34:08,793 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:34:08,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:34:08,795 INFO L82 PathProgramCache]: Analyzing trace with hash 735941424, now seen corresponding path program 1 times [2020-08-22 04:34:08,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:34:08,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58990906] [2020-08-22 04:34:08,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:34:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:09,144 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:34:09,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:34:09,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:09,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:34:09,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:09,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:34:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:09,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:34:09,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:09,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:34:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:09,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:34:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:09,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 04:34:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:09,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:34:09,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:09,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 04:34:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:09,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 04:34:09,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:09,208 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 04:34:09,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58990906] [2020-08-22 04:34:09,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:34:09,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 04:34:09,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700010913] [2020-08-22 04:34:09,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 04:34:09,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:34:09,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 04:34:09,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:34:09,213 INFO L87 Difference]: Start difference. First operand 146 states and 171 transitions. Second operand 5 states. [2020-08-22 04:34:09,734 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:34:10,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:34:10,677 INFO L93 Difference]: Finished difference Result 259 states and 316 transitions. [2020-08-22 04:34:10,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 04:34:10,678 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-22 04:34:10,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:34:10,682 INFO L225 Difference]: With dead ends: 259 [2020-08-22 04:34:10,682 INFO L226 Difference]: Without dead ends: 169 [2020-08-22 04:34:10,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 04:34:10,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-08-22 04:34:10,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 137. [2020-08-22 04:34:10,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-08-22 04:34:10,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 159 transitions. [2020-08-22 04:34:10,728 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 159 transitions. Word has length 60 [2020-08-22 04:34:10,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:34:10,728 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 159 transitions. [2020-08-22 04:34:10,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 04:34:10,729 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 159 transitions. [2020-08-22 04:34:10,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-22 04:34:10,731 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:34:10,732 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 04:34:10,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 04:34:10,732 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:34:10,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:34:10,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1019781836, now seen corresponding path program 1 times [2020-08-22 04:34:10,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:34:10,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201327078] [2020-08-22 04:34:10,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:34:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:11,067 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:34:11,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:34:11,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:11,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:34:11,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:11,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:34:11,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:11,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:34:11,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:11,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:34:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:11,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:34:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:11,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:34:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:11,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:34:11,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:11,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 04:34:11,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:11,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-22 04:34:11,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:11,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 04:34:11,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201327078] [2020-08-22 04:34:11,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:34:11,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 04:34:11,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64713724] [2020-08-22 04:34:11,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:34:11,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:34:11,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:34:11,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:34:11,278 INFO L87 Difference]: Start difference. First operand 137 states and 159 transitions. Second operand 9 states. [2020-08-22 04:34:11,658 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:34:11,984 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:34:12,253 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:34:12,501 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:34:13,478 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:34:15,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:34:15,342 INFO L93 Difference]: Finished difference Result 460 states and 568 transitions. [2020-08-22 04:34:15,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 04:34:15,346 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-22 04:34:15,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:34:15,354 INFO L225 Difference]: With dead ends: 460 [2020-08-22 04:34:15,355 INFO L226 Difference]: Without dead ends: 351 [2020-08-22 04:34:15,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-22 04:34:15,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-08-22 04:34:15,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 290. [2020-08-22 04:34:15,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-08-22 04:34:15,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 350 transitions. [2020-08-22 04:34:15,439 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 350 transitions. Word has length 65 [2020-08-22 04:34:15,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:34:15,440 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 350 transitions. [2020-08-22 04:34:15,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:34:15,440 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 350 transitions. [2020-08-22 04:34:15,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-22 04:34:15,443 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:34:15,443 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 04:34:15,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 04:34:15,444 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:34:15,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:34:15,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1071873071, now seen corresponding path program 1 times [2020-08-22 04:34:15,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:34:15,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891061279] [2020-08-22 04:34:15,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:34:15,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:15,787 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:34:15,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:34:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:15,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:34:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:15,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:34:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:15,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:34:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:15,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:34:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:15,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:34:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:15,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 04:34:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:15,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 04:34:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:15,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:34:15,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:15,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 04:34:15,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:15,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 04:34:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:15,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 04:34:15,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891061279] [2020-08-22 04:34:15,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:34:15,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 04:34:15,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163825187] [2020-08-22 04:34:15,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:34:15,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:34:15,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:34:15,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:34:15,880 INFO L87 Difference]: Start difference. First operand 290 states and 350 transitions. Second operand 9 states. [2020-08-22 04:34:16,382 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:34:17,055 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:34:17,882 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:34:18,217 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:34:18,504 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:34:18,791 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:34:19,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:34:19,590 INFO L93 Difference]: Finished difference Result 747 states and 974 transitions. [2020-08-22 04:34:19,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 04:34:19,591 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-22 04:34:19,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:34:19,598 INFO L225 Difference]: With dead ends: 747 [2020-08-22 04:34:19,598 INFO L226 Difference]: Without dead ends: 485 [2020-08-22 04:34:19,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 04:34:19,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-08-22 04:34:19,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 417. [2020-08-22 04:34:19,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-08-22 04:34:19,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 501 transitions. [2020-08-22 04:34:19,687 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 501 transitions. Word has length 70 [2020-08-22 04:34:19,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:34:19,688 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 501 transitions. [2020-08-22 04:34:19,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:34:19,688 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 501 transitions. [2020-08-22 04:34:19,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 04:34:19,692 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:34:19,692 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 04:34:19,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 04:34:19,692 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:34:19,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:34:19,693 INFO L82 PathProgramCache]: Analyzing trace with hash -573764694, now seen corresponding path program 1 times [2020-08-22 04:34:19,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:34:19,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977385360] [2020-08-22 04:34:19,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:34:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:19,999 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:34:20,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:34:20,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:20,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:34:20,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:20,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:34:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:20,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:34:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:20,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:34:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:20,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:34:20,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:20,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:34:20,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:20,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:34:20,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:20,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 04:34:20,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:20,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:34:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:20,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:34:20,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:20,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:34:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:20,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:34:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:20,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-22 04:34:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:20,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 04:34:20,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:20,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 04:34:20,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977385360] [2020-08-22 04:34:20,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:34:20,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 04:34:20,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500228443] [2020-08-22 04:34:20,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:34:20,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:34:20,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:34:20,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:34:20,149 INFO L87 Difference]: Start difference. First operand 417 states and 501 transitions. Second operand 9 states. [2020-08-22 04:34:20,512 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:34:21,614 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:34:21,858 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 04:34:22,110 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:34:22,392 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:34:23,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:34:23,629 INFO L93 Difference]: Finished difference Result 1260 states and 1685 transitions. [2020-08-22 04:34:23,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 04:34:23,630 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-22 04:34:23,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:34:23,636 INFO L225 Difference]: With dead ends: 1260 [2020-08-22 04:34:23,637 INFO L226 Difference]: Without dead ends: 871 [2020-08-22 04:34:23,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-22 04:34:23,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2020-08-22 04:34:23,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 743. [2020-08-22 04:34:23,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-08-22 04:34:23,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 897 transitions. [2020-08-22 04:34:23,768 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 897 transitions. Word has length 93 [2020-08-22 04:34:23,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:34:23,769 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 897 transitions. [2020-08-22 04:34:23,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:34:23,769 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 897 transitions. [2020-08-22 04:34:23,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 04:34:23,772 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:34:23,773 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 04:34:23,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 04:34:23,773 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:34:23,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:34:23,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1995721705, now seen corresponding path program 1 times [2020-08-22 04:34:23,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:34:23,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401710166] [2020-08-22 04:34:23,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:34:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:24,048 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:34:24,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:34:24,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:24,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:34:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:24,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:34:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:24,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:34:24,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:24,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:34:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:24,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:34:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:24,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:34:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:24,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:34:24,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:24,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 04:34:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:24,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:34:24,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:24,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:34:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:24,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:34:24,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:24,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:34:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:24,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-22 04:34:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:24,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 04:34:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:24,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 04:34:24,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401710166] [2020-08-22 04:34:24,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:34:24,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 04:34:24,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550664222] [2020-08-22 04:34:24,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:34:24,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:34:24,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:34:24,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:34:24,186 INFO L87 Difference]: Start difference. First operand 743 states and 897 transitions. Second operand 9 states. [2020-08-22 04:34:25,312 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:34:25,560 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 04:34:25,813 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:34:26,044 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:34:26,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:34:26,847 INFO L93 Difference]: Finished difference Result 1585 states and 2019 transitions. [2020-08-22 04:34:26,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 04:34:26,850 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-22 04:34:26,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:34:26,858 INFO L225 Difference]: With dead ends: 1585 [2020-08-22 04:34:26,858 INFO L226 Difference]: Without dead ends: 870 [2020-08-22 04:34:26,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 04:34:26,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2020-08-22 04:34:27,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 763. [2020-08-22 04:34:27,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 763 states. [2020-08-22 04:34:27,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 917 transitions. [2020-08-22 04:34:27,021 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 917 transitions. Word has length 93 [2020-08-22 04:34:27,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:34:27,023 INFO L479 AbstractCegarLoop]: Abstraction has 763 states and 917 transitions. [2020-08-22 04:34:27,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:34:27,024 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 917 transitions. [2020-08-22 04:34:27,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 04:34:27,028 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:34:27,029 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 04:34:27,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 04:34:27,030 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:34:27,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:34:27,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1597645717, now seen corresponding path program 1 times [2020-08-22 04:34:27,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:34:27,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942596038] [2020-08-22 04:34:27,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:34:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:27,323 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:34:27,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:34:27,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:27,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:34:27,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:27,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:34:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:27,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:34:27,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:27,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:34:27,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:27,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:34:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:27,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:34:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:27,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:34:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:27,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 04:34:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:27,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:34:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:27,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:34:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:27,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:34:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:27,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:34:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:27,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-22 04:34:27,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:27,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 04:34:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:27,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 04:34:27,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942596038] [2020-08-22 04:34:27,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:34:27,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 04:34:27,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120409573] [2020-08-22 04:34:27,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 04:34:27,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:34:27,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 04:34:27,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 04:34:27,484 INFO L87 Difference]: Start difference. First operand 763 states and 917 transitions. Second operand 11 states. [2020-08-22 04:34:28,088 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:34:28,364 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:34:28,588 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:34:29,463 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:34:29,698 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:34:29,967 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:34:30,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:34:30,791 INFO L93 Difference]: Finished difference Result 1442 states and 1826 transitions. [2020-08-22 04:34:30,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 04:34:30,792 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-22 04:34:30,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:34:30,798 INFO L225 Difference]: With dead ends: 1442 [2020-08-22 04:34:30,798 INFO L226 Difference]: Without dead ends: 707 [2020-08-22 04:34:30,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 04:34:30,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-08-22 04:34:30,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 630. [2020-08-22 04:34:30,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2020-08-22 04:34:30,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 739 transitions. [2020-08-22 04:34:30,899 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 739 transitions. Word has length 93 [2020-08-22 04:34:30,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:34:30,900 INFO L479 AbstractCegarLoop]: Abstraction has 630 states and 739 transitions. [2020-08-22 04:34:30,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 04:34:30,900 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 739 transitions. [2020-08-22 04:34:30,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-22 04:34:30,901 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:34:30,902 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 04:34:30,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 04:34:30,902 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:34:30,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:34:30,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1394866514, now seen corresponding path program 1 times [2020-08-22 04:34:30,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:34:30,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938874951] [2020-08-22 04:34:30,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:34:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:31,247 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:34:31,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:34:31,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:31,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:34:31,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:31,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:34:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:31,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:34:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:31,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:34:31,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:31,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:34:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:31,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:34:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:31,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 04:34:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:31,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:34:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:31,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 04:34:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:31,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:34:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:31,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:34:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:31,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:34:31,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:31,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:34:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:31,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-22 04:34:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:31,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 04:34:31,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:31,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 04:34:31,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938874951] [2020-08-22 04:34:31,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:34:31,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 04:34:31,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274792996] [2020-08-22 04:34:31,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 04:34:31,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:34:31,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 04:34:31,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:34:31,425 INFO L87 Difference]: Start difference. First operand 630 states and 739 transitions. Second operand 12 states. [2020-08-22 04:34:31,794 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:34:32,457 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:34:33,111 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:34:33,409 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:34:33,654 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 04:34:33,955 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:34:34,219 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:34:36,134 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:34:36,443 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:34:36,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:34:36,891 INFO L93 Difference]: Finished difference Result 1853 states and 2361 transitions. [2020-08-22 04:34:36,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 04:34:36,892 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2020-08-22 04:34:36,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:34:36,900 INFO L225 Difference]: With dead ends: 1853 [2020-08-22 04:34:36,901 INFO L226 Difference]: Without dead ends: 1437 [2020-08-22 04:34:36,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-22 04:34:36,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2020-08-22 04:34:37,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1299. [2020-08-22 04:34:37,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1299 states. [2020-08-22 04:34:37,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1525 transitions. [2020-08-22 04:34:37,148 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1525 transitions. Word has length 97 [2020-08-22 04:34:37,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:34:37,151 INFO L479 AbstractCegarLoop]: Abstraction has 1299 states and 1525 transitions. [2020-08-22 04:34:37,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 04:34:37,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1525 transitions. [2020-08-22 04:34:37,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-22 04:34:37,158 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:34:37,158 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, 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] [2020-08-22 04:34:37,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 04:34:37,159 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:34:37,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:34:37,160 INFO L82 PathProgramCache]: Analyzing trace with hash 773750625, now seen corresponding path program 1 times [2020-08-22 04:34:37,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:34:37,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444575543] [2020-08-22 04:34:37,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:34:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:37,486 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:34:37,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:34:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:37,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:34:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:37,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:34:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:37,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:34:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:37,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:34:37,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:37,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:34:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:37,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:34:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:37,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 04:34:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:37,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:34:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:37,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:34:37,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:37,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:34:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:37,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:34:37,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:37,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:34:37,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:37,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:34:37,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:37,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:34:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:37,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:34:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:37,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:34:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:37,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-22 04:34:37,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:37,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:34:37,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:37,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 04:34:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:37,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 04:34:37,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:37,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:34:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:37,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:34:37,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:37,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 04:34:37,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:37,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:34:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:37,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 04:34:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:37,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-22 04:34:37,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:37,919 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 04:34:37,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444575543] [2020-08-22 04:34:37,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:34:37,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 04:34:37,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364387002] [2020-08-22 04:34:37,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 04:34:37,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:34:37,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 04:34:37,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-22 04:34:37,923 INFO L87 Difference]: Start difference. First operand 1299 states and 1525 transitions. Second operand 16 states. [2020-08-22 04:34:38,572 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 04:34:39,009 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-22 04:34:39,279 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 04:34:39,549 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 04:34:40,259 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-08-22 04:34:40,665 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-22 04:34:41,010 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 04:34:41,412 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 04:34:41,786 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-22 04:34:42,963 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:34:43,960 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-22 04:34:44,481 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-22 04:34:44,797 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 04:34:45,417 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:34:45,833 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-22 04:34:46,424 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-08-22 04:34:46,998 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-08-22 04:34:47,514 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 04:34:48,059 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-22 04:34:48,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:34:48,868 INFO L93 Difference]: Finished difference Result 2875 states and 3500 transitions. [2020-08-22 04:34:48,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-08-22 04:34:48,868 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 157 [2020-08-22 04:34:48,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:34:48,879 INFO L225 Difference]: With dead ends: 2875 [2020-08-22 04:34:48,879 INFO L226 Difference]: Without dead ends: 1784 [2020-08-22 04:34:48,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=751, Invalid=3031, Unknown=0, NotChecked=0, Total=3782 [2020-08-22 04:34:48,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2020-08-22 04:34:49,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1573. [2020-08-22 04:34:49,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-08-22 04:34:49,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 1829 transitions. [2020-08-22 04:34:49,190 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 1829 transitions. Word has length 157 [2020-08-22 04:34:49,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:34:49,191 INFO L479 AbstractCegarLoop]: Abstraction has 1573 states and 1829 transitions. [2020-08-22 04:34:49,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 04:34:49,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 1829 transitions. [2020-08-22 04:34:49,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-08-22 04:34:49,199 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:34:49,199 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-22 04:34:49,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 04:34:49,200 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:34:49,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:34:49,200 INFO L82 PathProgramCache]: Analyzing trace with hash -2117575381, now seen corresponding path program 1 times [2020-08-22 04:34:49,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:34:49,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735178344] [2020-08-22 04:34:49,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:34:49,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,533 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:34:49,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:34:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:34:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:34:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:34:49,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:34:49,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:34:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:34:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 04:34:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:34:49,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:34:49,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:34:49,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:34:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:34:49,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:34:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:34:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:34:49,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:34:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 04:34:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:34:49,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:34:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:34:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 04:34:49,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:34:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:34:49,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 04:34:49,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:34:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:34:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:34:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-22 04:34:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:34:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:34:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:34:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 04:34:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:34:49,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:34:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 04:34:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 04:34:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:34:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-08-22 04:34:49,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:34:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-22 04:34:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:34:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:34:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:34:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:34:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-22 04:34:49,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:49,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-08-22 04:34:49,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:50,105 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 81 proven. 31 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-08-22 04:34:50,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735178344] [2020-08-22 04:34:50,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:34:50,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-22 04:34:50,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257672640] [2020-08-22 04:34:50,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 04:34:50,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:34:50,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 04:34:50,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-22 04:34:50,111 INFO L87 Difference]: Start difference. First operand 1573 states and 1829 transitions. Second operand 15 states. [2020-08-22 04:34:51,777 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:34:52,063 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 04:34:52,313 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:34:52,594 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 04:34:52,852 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:34:53,922 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 04:34:54,428 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-22 04:34:54,880 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-22 04:34:55,260 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:34:57,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:34:57,796 INFO L93 Difference]: Finished difference Result 4467 states and 5409 transitions. [2020-08-22 04:34:57,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 04:34:57,797 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 273 [2020-08-22 04:34:57,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:34:57,811 INFO L225 Difference]: With dead ends: 4467 [2020-08-22 04:34:57,811 INFO L226 Difference]: Without dead ends: 2691 [2020-08-22 04:34:57,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-08-22 04:34:57,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2691 states. [2020-08-22 04:34:58,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2691 to 2317. [2020-08-22 04:34:58,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2317 states. [2020-08-22 04:34:58,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 2705 transitions. [2020-08-22 04:34:58,291 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 2705 transitions. Word has length 273 [2020-08-22 04:34:58,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:34:58,292 INFO L479 AbstractCegarLoop]: Abstraction has 2317 states and 2705 transitions. [2020-08-22 04:34:58,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 04:34:58,292 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 2705 transitions. [2020-08-22 04:34:58,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-08-22 04:34:58,303 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:34:58,303 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-22 04:34:58,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 04:34:58,304 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:34:58,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:34:58,304 INFO L82 PathProgramCache]: Analyzing trace with hash 856417488, now seen corresponding path program 1 times [2020-08-22 04:34:58,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:34:58,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242565500] [2020-08-22 04:34:58,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:34:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,630 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:34:58,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:34:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:34:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:34:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:34:58,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:34:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:34:58,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:34:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 04:34:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:34:58,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:34:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:34:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:34:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:34:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:34:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:34:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:34:58,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:34:58,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 04:34:58,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:34:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:34:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:34:58,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 04:34:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:34:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:34:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 04:34:58,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:34:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:34:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:34:58,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 04:34:58,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 04:34:58,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:34:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:34:58,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:34:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 04:34:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:34:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:34:58,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 04:34:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 04:34:58,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:34:58,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-08-22 04:34:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:34:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-08-22 04:34:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:34:58,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:34:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:34:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:34:58,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-08-22 04:34:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:58,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-08-22 04:34:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:34:59,094 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 90 proven. 36 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2020-08-22 04:34:59,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242565500] [2020-08-22 04:34:59,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:34:59,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 04:34:59,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903002934] [2020-08-22 04:34:59,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 04:34:59,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:34:59,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 04:34:59,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-22 04:34:59,098 INFO L87 Difference]: Start difference. First operand 2317 states and 2705 transitions. Second operand 16 states. [2020-08-22 04:34:59,721 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:35:00,017 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 04:35:00,242 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 04:35:00,483 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 04:35:01,172 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191