/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 01:21:20,270 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 01:21:20,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 01:21:20,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 01:21:20,314 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 01:21:20,322 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 01:21:20,324 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 01:21:20,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 01:21:20,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 01:21:20,333 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 01:21:20,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 01:21:20,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 01:21:20,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 01:21:20,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 01:21:20,340 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 01:21:20,342 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 01:21:20,343 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 01:21:20,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 01:21:20,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 01:21:20,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 01:21:20,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 01:21:20,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 01:21:20,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 01:21:20,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 01:21:20,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 01:21:20,369 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 01:21:20,369 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 01:21:20,376 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 01:21:20,376 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 01:21:20,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 01:21:20,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 01:21:20,381 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 01:21:20,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 01:21:20,385 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 01:21:20,386 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 01:21:20,386 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 01:21:20,387 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 01:21:20,387 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 01:21:20,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 01:21:20,389 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 01:21:20,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 01:21:20,393 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 01:21:20,429 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 01:21:20,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 01:21:20,431 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 01:21:20,432 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 01:21:20,432 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 01:21:20,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 01:21:20,432 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 01:21:20,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 01:21:20,433 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 01:21:20,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 01:21:20,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 01:21:20,434 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 01:21:20,434 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 01:21:20,435 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 01:21:20,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 01:21:20,435 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 01:21:20,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 01:21:20,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 01:21:20,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 01:21:20,436 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 01:21:20,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 01:21:20,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:21:20,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 01:21:20,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 01:21:20,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 01:21:20,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 01:21:20,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 01:21:20,437 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 01:21:20,438 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 01:21:20,438 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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-08-22 01:21:20,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 01:21:20,791 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 01:21:20,795 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 01:21:20,797 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 01:21:20,798 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 01:21:20,798 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product63.cil.c [2020-08-22 01:21:20,873 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39859ae2e/8ed583fc2921456d94f8c2109c9f03f4/FLAG4881d9a3b [2020-08-22 01:21:21,518 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 01:21:21,519 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product63.cil.c [2020-08-22 01:21:21,541 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39859ae2e/8ed583fc2921456d94f8c2109c9f03f4/FLAG4881d9a3b [2020-08-22 01:21:21,826 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39859ae2e/8ed583fc2921456d94f8c2109c9f03f4 [2020-08-22 01:21:21,838 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 01:21:21,844 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 01:21:21,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 01:21:21,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 01:21:21,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 01:21:21,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:21:21" (1/1) ... [2020-08-22 01:21:21,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a277cf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:21:21, skipping insertion in model container [2020-08-22 01:21:21,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:21:21" (1/1) ... [2020-08-22 01:21:21,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 01:21:21,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 01:21:22,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:21:22,457 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 01:21:22,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:21:22,616 INFO L208 MainTranslator]: Completed translation [2020-08-22 01:21:22,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:21:22 WrapperNode [2020-08-22 01:21:22,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 01:21:22,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 01:21:22,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 01:21:22,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 01:21:22,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:21:22" (1/1) ... [2020-08-22 01:21:22,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:21:22" (1/1) ... [2020-08-22 01:21:22,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:21:22" (1/1) ... [2020-08-22 01:21:22,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:21:22" (1/1) ... [2020-08-22 01:21:22,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:21:22" (1/1) ... [2020-08-22 01:21:22,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:21:22" (1/1) ... [2020-08-22 01:21:22,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:21:22" (1/1) ... [2020-08-22 01:21:22,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 01:21:22,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 01:21:22,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 01:21:22,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 01:21:22,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:21:22" (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 01:21:22,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 01:21:22,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 01:21:22,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 01:21:22,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-22 01:21:22,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-22 01:21:22,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-22 01:21:22,783 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 01:21:22,783 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 01:21:22,783 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 01:21:22,784 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 01:21:22,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 01:21:22,784 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 01:21:22,784 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 01:21:22,784 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 01:21:22,785 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 01:21:22,785 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 01:21:22,786 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 01:21:22,786 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 01:21:22,786 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 01:21:22,787 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 01:21:22,787 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 01:21:22,787 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 01:21:22,787 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 01:21:22,788 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 01:21:22,788 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 01:21:22,789 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 01:21:22,790 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 01:21:22,790 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 01:21:22,790 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 01:21:22,791 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 01:21:22,791 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 01:21:22,792 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 01:21:22,792 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 01:21:22,792 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 01:21:22,792 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 01:21:22,792 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 01:21:22,793 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 01:21:22,794 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 01:21:22,794 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 01:21:22,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 01:21:22,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 01:21:22,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 01:21:22,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 01:21:22,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 01:21:22,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 01:21:22,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 01:21:22,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 01:21:22,795 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 01:21:22,796 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 01:21:22,796 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 01:21:22,796 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 01:21:22,796 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-22 01:21:22,796 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-22 01:21:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-22 01:21:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 01:21:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 01:21:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 01:21:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 01:21:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 01:21:22,812 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 01:21:22,812 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 01:21:22,812 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 01:21:22,812 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 01:21:22,813 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 01:21:22,813 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 01:21:22,813 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 01:21:22,813 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 01:21:22,813 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 01:21:22,814 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 01:21:22,817 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 01:21:22,817 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 01:21:22,818 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 01:21:22,819 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 01:21:22,819 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 01:21:22,819 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 01:21:22,820 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 01:21:22,820 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 01:21:22,821 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 01:21:22,821 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 01:21:22,821 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 01:21:22,821 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 01:21:22,821 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 01:21:22,825 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 01:21:22,825 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 01:21:22,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 01:21:22,825 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 01:21:22,825 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 01:21:22,826 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 01:21:22,826 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 01:21:22,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 01:21:22,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 01:21:22,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 01:21:22,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 01:21:22,826 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 01:21:22,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 01:21:22,829 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 01:21:22,829 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 01:21:22,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 01:21:22,829 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 01:21:22,830 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 01:21:22,830 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 01:21:22,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 01:21:22,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 01:21:22,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 01:21:23,977 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 01:21:23,978 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 01:21:23,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:21:23 BoogieIcfgContainer [2020-08-22 01:21:23,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 01:21:23,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 01:21:23,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 01:21:23,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 01:21:23,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 01:21:21" (1/3) ... [2020-08-22 01:21:23,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60ab8ffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:21:23, skipping insertion in model container [2020-08-22 01:21:23,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:21:22" (2/3) ... [2020-08-22 01:21:24,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60ab8ffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:21:24, skipping insertion in model container [2020-08-22 01:21:24,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:21:23" (3/3) ... [2020-08-22 01:21:24,003 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product63.cil.c [2020-08-22 01:21:24,016 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 01:21:24,025 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 01:21:24,040 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 01:21:24,065 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 01:21:24,066 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 01:21:24,066 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 01:21:24,066 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 01:21:24,066 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 01:21:24,066 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 01:21:24,066 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 01:21:24,067 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 01:21:24,094 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states. [2020-08-22 01:21:24,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 01:21:24,115 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:21:24,116 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 01:21:24,117 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:21:24,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:21:24,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1893311162, now seen corresponding path program 1 times [2020-08-22 01:21:24,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:21:24,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571215570] [2020-08-22 01:21:24,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:21:24,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,805 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:21:24,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:21:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:21:24,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:24,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:21:24,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:21:24,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:21:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 01:21:24,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 01:21:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:24,932 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 01:21:24,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571215570] [2020-08-22 01:21:24,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:21:24,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 01:21:24,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126762239] [2020-08-22 01:21:24,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 01:21:24,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:21:24,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 01:21:24,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 01:21:24,990 INFO L87 Difference]: Start difference. First operand 212 states. Second operand 4 states. [2020-08-22 01:21:26,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:21:26,315 INFO L93 Difference]: Finished difference Result 372 states and 477 transitions. [2020-08-22 01:21:26,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 01:21:26,317 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-22 01:21:26,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:21:26,333 INFO L225 Difference]: With dead ends: 372 [2020-08-22 01:21:26,333 INFO L226 Difference]: Without dead ends: 204 [2020-08-22 01:21:26,338 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 01:21:26,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-08-22 01:21:26,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 169. [2020-08-22 01:21:26,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-08-22 01:21:26,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 201 transitions. [2020-08-22 01:21:26,497 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 201 transitions. Word has length 59 [2020-08-22 01:21:26,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:21:26,498 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 201 transitions. [2020-08-22 01:21:26,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 01:21:26,498 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 201 transitions. [2020-08-22 01:21:26,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-22 01:21:26,503 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:21:26,503 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 01:21:26,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 01:21:26,504 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:21:26,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:21:26,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1978801715, now seen corresponding path program 1 times [2020-08-22 01:21:26,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:21:26,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586221954] [2020-08-22 01:21:26,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:21:26,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,814 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:21:26,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:21:26,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:21:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:21:26,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:21:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 01:21:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 01:21:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 01:21:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,903 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 01:21:26,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586221954] [2020-08-22 01:21:26,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:21:26,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:21:26,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655507215] [2020-08-22 01:21:26,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:21:26,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:21:26,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:21:26,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:21:26,907 INFO L87 Difference]: Start difference. First operand 169 states and 201 transitions. Second operand 5 states. [2020-08-22 01:21:27,395 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:28,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:21:28,554 INFO L93 Difference]: Finished difference Result 311 states and 381 transitions. [2020-08-22 01:21:28,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 01:21:28,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-22 01:21:28,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:21:28,558 INFO L225 Difference]: With dead ends: 311 [2020-08-22 01:21:28,559 INFO L226 Difference]: Without dead ends: 194 [2020-08-22 01:21:28,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 01:21:28,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-08-22 01:21:28,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 160. [2020-08-22 01:21:28,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-08-22 01:21:28,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 189 transitions. [2020-08-22 01:21:28,605 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 189 transitions. Word has length 60 [2020-08-22 01:21:28,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:21:28,606 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 189 transitions. [2020-08-22 01:21:28,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:21:28,606 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 189 transitions. [2020-08-22 01:21:28,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-22 01:21:28,609 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:21:28,609 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] [2020-08-22 01:21:28,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 01:21:28,610 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:21:28,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:21:28,610 INFO L82 PathProgramCache]: Analyzing trace with hash -532508270, now seen corresponding path program 1 times [2020-08-22 01:21:28,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:21:28,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583480073] [2020-08-22 01:21:28,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:21:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:29,006 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:21:29,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:29,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:29,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:21:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:29,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:21:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:29,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:29,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:21:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:29,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:21:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:29,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:21:29,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:29,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:29,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 01:21:29,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:29,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 01:21:29,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:29,120 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 01:21:29,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583480073] [2020-08-22 01:21:29,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:21:29,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 01:21:29,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326602785] [2020-08-22 01:21:29,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:21:29,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:21:29,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:21:29,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:21:29,123 INFO L87 Difference]: Start difference. First operand 160 states and 189 transitions. Second operand 9 states. [2020-08-22 01:21:29,463 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:29,767 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:30,023 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:30,247 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:31,149 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:33,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:21:33,479 INFO L93 Difference]: Finished difference Result 533 states and 661 transitions. [2020-08-22 01:21:33,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 01:21:33,480 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-22 01:21:33,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:21:33,485 INFO L225 Difference]: With dead ends: 533 [2020-08-22 01:21:33,485 INFO L226 Difference]: Without dead ends: 401 [2020-08-22 01:21:33,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-22 01:21:33,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2020-08-22 01:21:33,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 340. [2020-08-22 01:21:33,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-08-22 01:21:33,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 414 transitions. [2020-08-22 01:21:33,575 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 414 transitions. Word has length 64 [2020-08-22 01:21:33,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:21:33,576 INFO L479 AbstractCegarLoop]: Abstraction has 340 states and 414 transitions. [2020-08-22 01:21:33,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:21:33,576 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 414 transitions. [2020-08-22 01:21:33,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-22 01:21:33,583 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:21:33,583 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:21:33,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 01:21:33,584 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:21:33,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:21:33,584 INFO L82 PathProgramCache]: Analyzing trace with hash 216340368, now seen corresponding path program 1 times [2020-08-22 01:21:33,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:21:33,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931731848] [2020-08-22 01:21:33,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:21:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:33,922 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:21:33,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:33,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:21:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:33,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:21:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:33,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:33,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:21:33,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:33,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:21:33,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:33,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:21:33,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:33,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 01:21:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:34,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:34,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 01:21:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:34,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 01:21:34,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:34,042 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 01:21:34,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [931731848] [2020-08-22 01:21:34,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:21:34,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 01:21:34,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317766560] [2020-08-22 01:21:34,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:21:34,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:21:34,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:21:34,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:21:34,045 INFO L87 Difference]: Start difference. First operand 340 states and 414 transitions. Second operand 9 states. [2020-08-22 01:21:34,376 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:35,034 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:36,202 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:36,478 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:36,805 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:37,125 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:38,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:21:38,097 INFO L93 Difference]: Finished difference Result 875 states and 1130 transitions. [2020-08-22 01:21:38,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 01:21:38,098 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-22 01:21:38,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:21:38,104 INFO L225 Difference]: With dead ends: 875 [2020-08-22 01:21:38,105 INFO L226 Difference]: Without dead ends: 563 [2020-08-22 01:21:38,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 01:21:38,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-08-22 01:21:38,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 499. [2020-08-22 01:21:38,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2020-08-22 01:21:38,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 597 transitions. [2020-08-22 01:21:38,223 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 597 transitions. Word has length 70 [2020-08-22 01:21:38,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:21:38,224 INFO L479 AbstractCegarLoop]: Abstraction has 499 states and 597 transitions. [2020-08-22 01:21:38,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:21:38,224 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 597 transitions. [2020-08-22 01:21:38,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-22 01:21:38,227 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:21:38,227 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:21:38,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 01:21:38,228 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:21:38,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:21:38,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1357993179, now seen corresponding path program 1 times [2020-08-22 01:21:38,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:21:38,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842077493] [2020-08-22 01:21:38,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:21:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:38,520 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:21:38,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:38,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:21:38,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:38,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:21:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:38,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:38,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:21:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:38,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:21:38,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:38,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:21:38,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:38,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:38,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:38,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 01:21:38,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:38,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:38,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:38,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:38,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:38,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:38,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:21:38,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:38,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:38,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:38,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:38,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:38,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:38,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:38,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 01:21:38,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:38,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-22 01:21:38,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:38,697 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 01:21:38,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842077493] [2020-08-22 01:21:38,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:21:38,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 01:21:38,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361272074] [2020-08-22 01:21:38,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:21:38,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:21:38,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:21:38,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:21:38,700 INFO L87 Difference]: Start difference. First operand 499 states and 597 transitions. Second operand 9 states. [2020-08-22 01:21:39,798 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:40,067 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 01:21:40,335 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:40,602 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:41,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:21:41,571 INFO L93 Difference]: Finished difference Result 1060 states and 1356 transitions. [2020-08-22 01:21:41,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 01:21:41,572 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 112 [2020-08-22 01:21:41,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:21:41,577 INFO L225 Difference]: With dead ends: 1060 [2020-08-22 01:21:41,577 INFO L226 Difference]: Without dead ends: 589 [2020-08-22 01:21:41,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 01:21:41,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2020-08-22 01:21:41,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 512. [2020-08-22 01:21:41,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2020-08-22 01:21:41,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 611 transitions. [2020-08-22 01:21:41,683 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 611 transitions. Word has length 112 [2020-08-22 01:21:41,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:21:41,684 INFO L479 AbstractCegarLoop]: Abstraction has 512 states and 611 transitions. [2020-08-22 01:21:41,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:21:41,684 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 611 transitions. [2020-08-22 01:21:41,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-22 01:21:41,692 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:21:41,693 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:21:41,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 01:21:41,693 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:21:41,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:21:41,694 INFO L82 PathProgramCache]: Analyzing trace with hash 581168867, now seen corresponding path program 1 times [2020-08-22 01:21:41,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:21:41,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985120759] [2020-08-22 01:21:41,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:21:41,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:41,952 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:21:41,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:41,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:21:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:41,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:21:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:41,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:41,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:21:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:41,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:21:41,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:41,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:21:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:41,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:42,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:42,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 01:21:42,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:42,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:42,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:42,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:42,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:42,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:42,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:42,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:21:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:42,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:42,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:42,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:42,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:42,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 01:21:42,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:42,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-22 01:21:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:42,145 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 01:21:42,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985120759] [2020-08-22 01:21:42,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:21:42,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 01:21:42,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313514352] [2020-08-22 01:21:42,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 01:21:42,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:21:42,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 01:21:42,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 01:21:42,148 INFO L87 Difference]: Start difference. First operand 512 states and 611 transitions. Second operand 11 states. [2020-08-22 01:21:42,660 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:42,895 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:43,142 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:43,965 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:44,293 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:44,558 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:45,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:21:45,639 INFO L93 Difference]: Finished difference Result 1083 states and 1380 transitions. [2020-08-22 01:21:45,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 01:21:45,642 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 112 [2020-08-22 01:21:45,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:21:45,648 INFO L225 Difference]: With dead ends: 1083 [2020-08-22 01:21:45,648 INFO L226 Difference]: Without dead ends: 599 [2020-08-22 01:21:45,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 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 01:21:45,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2020-08-22 01:21:45,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 520. [2020-08-22 01:21:45,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2020-08-22 01:21:45,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 619 transitions. [2020-08-22 01:21:45,776 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 619 transitions. Word has length 112 [2020-08-22 01:21:45,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:21:45,777 INFO L479 AbstractCegarLoop]: Abstraction has 520 states and 619 transitions. [2020-08-22 01:21:45,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 01:21:45,777 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 619 transitions. [2020-08-22 01:21:45,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-22 01:21:45,780 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:21:45,781 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:21:45,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 01:21:45,783 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:21:45,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:21:45,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1350338882, now seen corresponding path program 1 times [2020-08-22 01:21:45,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:21:45,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132082585] [2020-08-22 01:21:45,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:21:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:46,043 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:21:46,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:46,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:46,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:21:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:46,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:21:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:46,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:46,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:21:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:46,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:21:46,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:46,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:21:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:46,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:46,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 01:21:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:46,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:46,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:46,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:46,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:46,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:46,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:46,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:21:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:46,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:46,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:46,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:46,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 01:21:46,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:46,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-22 01:21:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:46,311 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 01:21:46,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2132082585] [2020-08-22 01:21:46,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:21:46,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 01:21:46,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258253703] [2020-08-22 01:21:46,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 01:21:46,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:21:46,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 01:21:46,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 01:21:46,319 INFO L87 Difference]: Start difference. First operand 520 states and 619 transitions. Second operand 7 states. [2020-08-22 01:21:46,631 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:47,177 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:49,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:21:49,761 INFO L93 Difference]: Finished difference Result 1571 states and 2020 transitions. [2020-08-22 01:21:49,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 01:21:49,763 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2020-08-22 01:21:49,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:21:49,774 INFO L225 Difference]: With dead ends: 1571 [2020-08-22 01:21:49,774 INFO L226 Difference]: Without dead ends: 1079 [2020-08-22 01:21:49,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-22 01:21:49,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2020-08-22 01:21:49,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1005. [2020-08-22 01:21:49,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1005 states. [2020-08-22 01:21:49,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1219 transitions. [2020-08-22 01:21:49,968 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1219 transitions. Word has length 112 [2020-08-22 01:21:49,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:21:49,969 INFO L479 AbstractCegarLoop]: Abstraction has 1005 states and 1219 transitions. [2020-08-22 01:21:49,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 01:21:49,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1219 transitions. [2020-08-22 01:21:49,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-08-22 01:21:49,974 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:21:49,974 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:21:49,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 01:21:49,974 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:21:49,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:21:49,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1975342852, now seen corresponding path program 1 times [2020-08-22 01:21:49,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:21:49,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763052305] [2020-08-22 01:21:49,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:21:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:50,365 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:21:50,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:50,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:50,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:21:50,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:50,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:21:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:50,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:50,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:21:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:50,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:21:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:50,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:21:50,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:50,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 01:21:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:50,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:50,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 01:21:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:50,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:50,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:50,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:50,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:50,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:50,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:50,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:21:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:50,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:50,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:50,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:50,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:50,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:50,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:50,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 01:21:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:50,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 01:21:50,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:50,571 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 01:21:50,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763052305] [2020-08-22 01:21:50,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:21:50,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 01:21:50,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778897613] [2020-08-22 01:21:50,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 01:21:50,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:21:50,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 01:21:50,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-22 01:21:50,573 INFO L87 Difference]: Start difference. First operand 1005 states and 1219 transitions. Second operand 12 states. [2020-08-22 01:21:51,181 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:52,003 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:52,698 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:53,058 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:53,347 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:21:53,630 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:53,911 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:56,389 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:56,708 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:57,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:21:57,596 INFO L93 Difference]: Finished difference Result 2851 states and 3676 transitions. [2020-08-22 01:21:57,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 01:21:57,597 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 116 [2020-08-22 01:21:57,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:21:57,609 INFO L225 Difference]: With dead ends: 2851 [2020-08-22 01:21:57,610 INFO L226 Difference]: Without dead ends: 2072 [2020-08-22 01:21:57,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-22 01:21:57,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2020-08-22 01:21:57,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 1772. [2020-08-22 01:21:57,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1772 states. [2020-08-22 01:21:57,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1772 states to 1772 states and 2130 transitions. [2020-08-22 01:21:57,961 INFO L78 Accepts]: Start accepts. Automaton has 1772 states and 2130 transitions. Word has length 116 [2020-08-22 01:21:57,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:21:57,962 INFO L479 AbstractCegarLoop]: Abstraction has 1772 states and 2130 transitions. [2020-08-22 01:21:57,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 01:21:57,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1772 states and 2130 transitions. [2020-08-22 01:21:57,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-08-22 01:21:57,967 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:21:57,968 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:21:57,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 01:21:57,968 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:21:57,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:21:57,969 INFO L82 PathProgramCache]: Analyzing trace with hash -283315442, now seen corresponding path program 1 times [2020-08-22 01:21:57,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:21:57,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016383570] [2020-08-22 01:21:57,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:21:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:58,288 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:21:58,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:58,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:21:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:58,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:21:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:58,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:58,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:58,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:21:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:58,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:21:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:58,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:21:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:58,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 01:21:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:58,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:58,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:58,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:58,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:21:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:58,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:58,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:58,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:58,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:58,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:58,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:58,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:58,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:21:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:58,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:58,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:58,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:58,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:58,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:58,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-22 01:21:58,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:58,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:58,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:58,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 01:21:58,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:58,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:58,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:58,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 01:21:58,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:58,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 01:21:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:58,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:58,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:58,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:58,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:58,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 01:21:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:58,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:58,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:58,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:58,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:21:58,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:58,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:58,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 01:21:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:58,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-22 01:21:58,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:58,581 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-08-22 01:21:58,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016383570] [2020-08-22 01:21:58,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:21:58,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 01:21:58,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324885553] [2020-08-22 01:21:58,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 01:21:58,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:21:58,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 01:21:58,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-22 01:21:58,583 INFO L87 Difference]: Start difference. First operand 1772 states and 2130 transitions. Second operand 16 states. [2020-08-22 01:21:59,120 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:21:59,463 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 01:21:59,760 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 01:22:00,041 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 01:22:00,687 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:22:01,026 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:22:01,418 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 01:22:01,702 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 01:22:03,201 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:22:03,787 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:22:04,103 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:22:04,460 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:22:05,020 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:22:05,438 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:22:06,231 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:22:06,546 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 01:22:07,090 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 01:22:07,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:22:07,963 INFO L93 Difference]: Finished difference Result 3775 states and 4672 transitions. [2020-08-22 01:22:07,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-22 01:22:07,965 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 193 [2020-08-22 01:22:07,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:22:07,978 INFO L225 Difference]: With dead ends: 3775 [2020-08-22 01:22:07,978 INFO L226 Difference]: Without dead ends: 2217 [2020-08-22 01:22:07,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=589, Invalid=2167, Unknown=0, NotChecked=0, Total=2756 [2020-08-22 01:22:07,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2217 states. [2020-08-22 01:22:08,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2217 to 2039. [2020-08-22 01:22:08,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2039 states. [2020-08-22 01:22:08,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2039 states to 2039 states and 2400 transitions. [2020-08-22 01:22:08,463 INFO L78 Accepts]: Start accepts. Automaton has 2039 states and 2400 transitions. Word has length 193 [2020-08-22 01:22:08,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:22:08,466 INFO L479 AbstractCegarLoop]: Abstraction has 2039 states and 2400 transitions. [2020-08-22 01:22:08,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 01:22:08,466 INFO L276 IsEmpty]: Start isEmpty. Operand 2039 states and 2400 transitions. [2020-08-22 01:22:08,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-08-22 01:22:08,477 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:22:08,478 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, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-22 01:22:08,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 01:22:08,478 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:22:08,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:22:08,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1594839617, now seen corresponding path program 1 times [2020-08-22 01:22:08,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:22:08,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629175232] [2020-08-22 01:22:08,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:22:08,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:08,876 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:22:08,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:22:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:08,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:22:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:08,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:22:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:08,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:22:08,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:08,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:22:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:08,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:22:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:08,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:22:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:08,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 01:22:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:08,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:22:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:08,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:22:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:22:09,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:22:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:22:09,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:22:09,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:22:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:22:09,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:22:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:22:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:22:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-22 01:22:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:22:09,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-22 01:22:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:22:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:22:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:22:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 01:22:09,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:22:09,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:22:09,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 01:22:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:22:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:22:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:22:09,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:22:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-22 01:22:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:22:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 01:22:09,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:22:09,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:22:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:22:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 01:22:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:22:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:22:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 01:22:09,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 01:22:09,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:22:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-22 01:22:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-08-22 01:22:09,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:22:09,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-08-22 01:22:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:22:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:22:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:22:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:22:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:22:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:22:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:22:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:22:09,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-08-22 01:22:09,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-22 01:22:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:09,487 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 75 proven. 21 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2020-08-22 01:22:09,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629175232] [2020-08-22 01:22:09,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:22:09,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 01:22:09,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697643938] [2020-08-22 01:22:09,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 01:22:09,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:22:09,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 01:22:09,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-08-22 01:22:09,493 INFO L87 Difference]: Start difference. First operand 2039 states and 2400 transitions. Second operand 16 states. [2020-08-22 01:22:10,175 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:22:10,959 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:22:12,787 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:22:13,141 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:22:13,441 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:22:13,744 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:22:14,061 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:22:14,387 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:22:15,805 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 191 [2020-08-22 01:22:16,262 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 191 [2020-08-22 01:22:16,782 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 192 [2020-08-22 01:22:17,309 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 192 [2020-08-22 01:22:18,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:22:18,604 INFO L93 Difference]: Finished difference Result 5889 states and 7114 transitions. [2020-08-22 01:22:18,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-22 01:22:18,605 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 331 [2020-08-22 01:22:18,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:22:18,632 INFO L225 Difference]: With dead ends: 5889 [2020-08-22 01:22:18,632 INFO L226 Difference]: Without dead ends: 3886 [2020-08-22 01:22:18,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=376, Invalid=1346, Unknown=0, NotChecked=0, Total=1722 [2020-08-22 01:22:18,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3886 states. [2020-08-22 01:22:19,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3886 to 3783. [2020-08-22 01:22:19,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3783 states. [2020-08-22 01:22:19,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3783 states to 3783 states and 4382 transitions. [2020-08-22 01:22:19,423 INFO L78 Accepts]: Start accepts. Automaton has 3783 states and 4382 transitions. Word has length 331 [2020-08-22 01:22:19,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:22:19,427 INFO L479 AbstractCegarLoop]: Abstraction has 3783 states and 4382 transitions. [2020-08-22 01:22:19,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 01:22:19,427 INFO L276 IsEmpty]: Start isEmpty. Operand 3783 states and 4382 transitions. [2020-08-22 01:22:19,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-08-22 01:22:19,446 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:22:19,447 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, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-22 01:22:19,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 01:22:19,447 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:22:19,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:22:19,448 INFO L82 PathProgramCache]: Analyzing trace with hash 2050979555, now seen corresponding path program 1 times [2020-08-22 01:22:19,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:22:19,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221732292] [2020-08-22 01:22:19,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:22:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:19,766 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:22:19,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:22:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:19,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:22:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:19,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:22:19,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:19,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:22:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:19,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:22:19,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:19,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:22:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:19,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:22:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:19,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 01:22:19,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:19,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:22:19,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:19,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:22:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:19,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:22:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:19,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:22:19,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:19,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:22:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:19,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:22:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:19,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:22:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:19,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:22:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:19,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:22:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:19,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:22:19,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:19,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:22:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:19,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-22 01:22:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:19,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:22:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:19,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-22 01:22:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:19,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:22:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:19,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:22:19,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:19,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:22:19,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:19,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 01:22:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:19,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:22:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:19,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:22:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:19,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 01:22:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:19,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:22:19,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:19,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:22:19,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:19,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:22:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:19,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:22:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:19,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-22 01:22:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:19,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:22:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:19,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-08-22 01:22:19,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat