/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 21:42:07,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 21:42:07,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 21:42:07,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 21:42:07,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 21:42:07,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 21:42:07,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 21:42:07,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 21:42:07,739 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 21:42:07,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 21:42:07,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 21:42:07,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 21:42:07,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 21:42:07,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 21:42:07,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 21:42:07,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 21:42:07,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 21:42:07,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 21:42:07,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 21:42:07,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 21:42:07,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 21:42:07,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 21:42:07,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 21:42:07,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 21:42:07,759 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-27 21:42:07,760 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-27 21:42:07,760 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-27 21:42:07,761 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-27 21:42:07,761 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-27 21:42:07,762 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-27 21:42:07,763 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-27 21:42:07,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-27 21:42:07,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-27 21:42:07,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-27 21:42:07,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-27 21:42:07,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-27 21:42:07,771 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-27 21:42:07,772 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-27 21:42:07,772 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 21:42:07,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 21:42:07,774 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 21:42:07,775 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 [2020-08-27 21:42:07,836 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 21:42:07,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 21:42:07,841 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 21:42:07,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 21:42:07,842 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 21:42:07,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 21:42:07,842 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 21:42:07,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 21:42:07,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 21:42:07,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 21:42:07,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 21:42:07,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 21:42:07,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 21:42:07,845 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 21:42:07,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 21:42:07,845 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 21:42:07,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 21:42:07,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 21:42:07,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 21:42:07,847 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 21:42:07,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 21:42:07,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:42:07,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 21:42:07,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 21:42:07,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 21:42:07,849 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 21:42:07,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 21:42:07,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 21:42:07,849 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 21:42:07,849 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 -> false [2020-08-27 21:42:08,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 21:42:08,337 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 21:42:08,342 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 21:42:08,344 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 21:42:08,345 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 21:42:08,347 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product47.cil.c [2020-08-27 21:42:08,443 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d3d0766a/8843faee52214313aa0c051d42be990a/FLAG483a49461 [2020-08-27 21:42:09,061 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 21:42:09,063 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product47.cil.c [2020-08-27 21:42:09,078 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d3d0766a/8843faee52214313aa0c051d42be990a/FLAG483a49461 [2020-08-27 21:42:09,327 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d3d0766a/8843faee52214313aa0c051d42be990a [2020-08-27 21:42:09,340 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 21:42:09,342 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 21:42:09,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 21:42:09,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 21:42:09,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 21:42:09,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:42:09" (1/1) ... [2020-08-27 21:42:09,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e6ef35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:42:09, skipping insertion in model container [2020-08-27 21:42:09,353 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:42:09" (1/1) ... [2020-08-27 21:42:09,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 21:42:09,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 21:42:09,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:42:09,964 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 21:42:10,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:42:10,085 INFO L208 MainTranslator]: Completed translation [2020-08-27 21:42:10,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:42:10 WrapperNode [2020-08-27 21:42:10,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 21:42:10,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 21:42:10,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 21:42:10,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 21:42:10,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:42:10" (1/1) ... [2020-08-27 21:42:10,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:42:10" (1/1) ... [2020-08-27 21:42:10,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:42:10" (1/1) ... [2020-08-27 21:42:10,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:42:10" (1/1) ... [2020-08-27 21:42:10,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:42:10" (1/1) ... [2020-08-27 21:42:10,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:42:10" (1/1) ... [2020-08-27 21:42:10,203 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:42:10" (1/1) ... [2020-08-27 21:42:10,211 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 21:42:10,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 21:42:10,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 21:42:10,212 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 21:42:10,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:42:10" (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 [2020-08-27 21:42:10,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 21:42:10,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 21:42:10,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-27 21:42:10,288 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-27 21:42:10,289 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-27 21:42:10,289 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-27 21:42:10,289 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-27 21:42:10,289 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 21:42:10,290 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-27 21:42:10,290 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-27 21:42:10,290 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-27 21:42:10,290 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-27 21:42:10,290 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-27 21:42:10,291 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-27 21:42:10,291 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-27 21:42:10,291 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-27 21:42:10,291 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-27 21:42:10,291 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-27 21:42:10,291 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-27 21:42:10,292 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-27 21:42:10,292 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-27 21:42:10,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-27 21:42:10,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-27 21:42:10,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-27 21:42:10,293 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-27 21:42:10,293 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-27 21:42:10,293 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-27 21:42:10,293 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-27 21:42:10,293 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-27 21:42:10,294 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-27 21:42:10,294 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-27 21:42:10,294 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-27 21:42:10,294 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-27 21:42:10,294 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-27 21:42:10,294 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-27 21:42:10,295 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-27 21:42:10,295 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-27 21:42:10,295 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-27 21:42:10,295 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-27 21:42:10,295 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-27 21:42:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 21:42:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-27 21:42:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-27 21:42:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-27 21:42:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-27 21:42:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-27 21:42:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-27 21:42:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-27 21:42:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-27 21:42:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-27 21:42:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-27 21:42:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-27 21:42:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-27 21:42:10,298 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-27 21:42:10,298 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-27 21:42:10,298 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 21:42:10,298 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-27 21:42:10,298 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-27 21:42:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-27 21:42:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-27 21:42:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-27 21:42:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-27 21:42:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-27 21:42:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-27 21:42:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-27 21:42:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-27 21:42:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-27 21:42:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-27 21:42:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-27 21:42:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-27 21:42:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-27 21:42:10,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-27 21:42:10,301 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-27 21:42:10,301 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-27 21:42:10,301 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-27 21:42:10,301 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-27 21:42:10,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-27 21:42:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-27 21:42:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-27 21:42:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-27 21:42:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-27 21:42:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-27 21:42:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-27 21:42:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-27 21:42:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-27 21:42:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-27 21:42:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-27 21:42:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-27 21:42:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-27 21:42:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-27 21:42:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-27 21:42:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 21:42:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-27 21:42:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 21:42:11,401 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 21:42:11,402 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-27 21:42:11,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:42:11 BoogieIcfgContainer [2020-08-27 21:42:11,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 21:42:11,415 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 21:42:11,415 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 21:42:11,420 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 21:42:11,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:42:09" (1/3) ... [2020-08-27 21:42:11,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b3b82a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:42:11, skipping insertion in model container [2020-08-27 21:42:11,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:42:10" (2/3) ... [2020-08-27 21:42:11,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b3b82a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:42:11, skipping insertion in model container [2020-08-27 21:42:11,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:42:11" (3/3) ... [2020-08-27 21:42:11,425 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product47.cil.c [2020-08-27 21:42:11,437 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 21:42:11,450 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 21:42:11,473 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 21:42:11,511 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 21:42:11,511 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 21:42:11,511 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 21:42:11,511 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 21:42:11,511 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 21:42:11,511 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 21:42:11,512 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 21:42:11,512 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 21:42:11,537 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-08-27 21:42:11,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-27 21:42:11,549 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:42:11,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:42:11,551 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:42:11,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:42:11,560 INFO L82 PathProgramCache]: Analyzing trace with hash -2007114508, now seen corresponding path program 1 times [2020-08-27 21:42:11,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:42:11,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693440672] [2020-08-27 21:42:11,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:42:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:12,325 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:42:12,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:42:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:12,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:42:12,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:12,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:42:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:12,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:12,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:42:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:12,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:42:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:12,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 21:42:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:12,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:42:12,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693440672] [2020-08-27 21:42:12,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:42:12,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-27 21:42:12,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751751175] [2020-08-27 21:42:12,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-27 21:42:12,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:42:12,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-27 21:42:12,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-27 21:42:12,458 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 3 states. [2020-08-27 21:42:13,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:42:13,740 INFO L93 Difference]: Finished difference Result 323 states and 421 transitions. [2020-08-27 21:42:13,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-27 21:42:13,743 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-27 21:42:13,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:42:13,761 INFO L225 Difference]: With dead ends: 323 [2020-08-27 21:42:13,761 INFO L226 Difference]: Without dead ends: 175 [2020-08-27 21:42:13,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-27 21:42:13,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-08-27 21:42:13,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 139. [2020-08-27 21:42:13,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-27 21:42:13,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 164 transitions. [2020-08-27 21:42:13,896 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 164 transitions. Word has length 46 [2020-08-27 21:42:13,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:42:13,898 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 164 transitions. [2020-08-27 21:42:13,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-27 21:42:13,899 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 164 transitions. [2020-08-27 21:42:13,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-27 21:42:13,909 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:42:13,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:42:13,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 21:42:13,910 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:42:13,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:42:13,910 INFO L82 PathProgramCache]: Analyzing trace with hash 622418136, now seen corresponding path program 1 times [2020-08-27 21:42:13,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:42:13,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101194266] [2020-08-27 21:42:13,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:42:13,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:14,345 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:42:14,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:42:14,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:14,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:42:14,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:14,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:42:14,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:14,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:14,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:42:14,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:14,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-27 21:42:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:14,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-27 21:42:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:14,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:42:14,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101194266] [2020-08-27 21:42:14,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:42:14,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 21:42:14,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116041831] [2020-08-27 21:42:14,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 21:42:14,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:42:14,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 21:42:14,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-27 21:42:14,406 INFO L87 Difference]: Start difference. First operand 139 states and 164 transitions. Second operand 4 states. [2020-08-27 21:42:14,832 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:15,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:42:15,771 INFO L93 Difference]: Finished difference Result 250 states and 304 transitions. [2020-08-27 21:42:15,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-27 21:42:15,772 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-27 21:42:15,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:42:15,775 INFO L225 Difference]: With dead ends: 250 [2020-08-27 21:42:15,776 INFO L226 Difference]: Without dead ends: 159 [2020-08-27 21:42:15,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-27 21:42:15,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-08-27 21:42:15,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 130. [2020-08-27 21:42:15,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-27 21:42:15,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 152 transitions. [2020-08-27 21:42:15,817 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 152 transitions. Word has length 47 [2020-08-27 21:42:15,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:42:15,817 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 152 transitions. [2020-08-27 21:42:15,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 21:42:15,818 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 152 transitions. [2020-08-27 21:42:15,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-27 21:42:15,819 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:42:15,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:42:15,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-27 21:42:15,820 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:42:15,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:42:15,821 INFO L82 PathProgramCache]: Analyzing trace with hash -943300313, now seen corresponding path program 1 times [2020-08-27 21:42:15,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:42:15,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266256984] [2020-08-27 21:42:15,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:42:15,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:16,232 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:42:16,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:42:16,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:16,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:42:16,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:16,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:42:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:16,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:16,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:42:16,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:16,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:42:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:16,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-27 21:42:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:16,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:42:16,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266256984] [2020-08-27 21:42:16,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:42:16,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-27 21:42:16,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904735329] [2020-08-27 21:42:16,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-27 21:42:16,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:42:16,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-27 21:42:16,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-27 21:42:16,388 INFO L87 Difference]: Start difference. First operand 130 states and 152 transitions. Second operand 8 states. [2020-08-27 21:42:16,783 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:42:17,177 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:17,479 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:17,731 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:18,560 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:20,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:42:20,700 INFO L93 Difference]: Finished difference Result 446 states and 552 transitions. [2020-08-27 21:42:20,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-27 21:42:20,701 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-27 21:42:20,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:42:20,706 INFO L225 Difference]: With dead ends: 446 [2020-08-27 21:42:20,706 INFO L226 Difference]: Without dead ends: 340 [2020-08-27 21:42:20,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-27 21:42:20,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-08-27 21:42:20,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 278. [2020-08-27 21:42:20,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-08-27 21:42:20,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 336 transitions. [2020-08-27 21:42:20,803 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 336 transitions. Word has length 51 [2020-08-27 21:42:20,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:42:20,806 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 336 transitions. [2020-08-27 21:42:20,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-27 21:42:20,806 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 336 transitions. [2020-08-27 21:42:20,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-27 21:42:20,809 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:42:20,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:42:20,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-27 21:42:20,810 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:42:20,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:42:20,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1373874698, now seen corresponding path program 1 times [2020-08-27 21:42:20,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:42:20,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247013520] [2020-08-27 21:42:20,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:42:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:21,252 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:42:21,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:42:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:21,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:42:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:21,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:42:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:21,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:21,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:21,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:42:21,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:21,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-27 21:42:21,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:21,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-27 21:42:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:21,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-27 21:42:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:21,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:42:21,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247013520] [2020-08-27 21:42:21,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:42:21,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-27 21:42:21,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217568328] [2020-08-27 21:42:21,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-27 21:42:21,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:42:21,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-27 21:42:21,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:42:21,392 INFO L87 Difference]: Start difference. First operand 278 states and 336 transitions. Second operand 12 states. [2020-08-27 21:42:21,913 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:42:22,284 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:22,596 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:22,882 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:23,535 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:24,441 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:24,892 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:42:25,300 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:42:25,696 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:42:26,021 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:42:26,548 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:42:26,986 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:42:27,325 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:29,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:42:29,710 INFO L93 Difference]: Finished difference Result 1133 states and 1552 transitions. [2020-08-27 21:42:29,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-27 21:42:29,710 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-27 21:42:29,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:42:29,720 INFO L225 Difference]: With dead ends: 1133 [2020-08-27 21:42:29,720 INFO L226 Difference]: Without dead ends: 879 [2020-08-27 21:42:29,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-27 21:42:29,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2020-08-27 21:42:29,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 782. [2020-08-27 21:42:29,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 782 states. [2020-08-27 21:42:29,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 994 transitions. [2020-08-27 21:42:29,932 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 994 transitions. Word has length 57 [2020-08-27 21:42:29,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:42:29,933 INFO L479 AbstractCegarLoop]: Abstraction has 782 states and 994 transitions. [2020-08-27 21:42:29,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-27 21:42:29,933 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 994 transitions. [2020-08-27 21:42:29,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-27 21:42:29,936 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:42:29,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:42:29,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-27 21:42:29,937 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:42:29,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:42:29,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1561170436, now seen corresponding path program 1 times [2020-08-27 21:42:29,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:42:29,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330900742] [2020-08-27 21:42:29,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:42:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:30,237 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:42:30,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:42:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:30,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:42:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:30,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:42:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:30,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:30,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:30,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:42:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:30,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-27 21:42:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:30,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-27 21:42:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:30,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:42:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:30,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-27 21:42:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:30,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:42:30,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330900742] [2020-08-27 21:42:30,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:42:30,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-27 21:42:30,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710006704] [2020-08-27 21:42:30,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-27 21:42:30,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:42:30,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-27 21:42:30,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-27 21:42:30,351 INFO L87 Difference]: Start difference. First operand 782 states and 994 transitions. Second operand 6 states. [2020-08-27 21:42:30,728 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:42:32,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:42:32,963 INFO L93 Difference]: Finished difference Result 1911 states and 2577 transitions. [2020-08-27 21:42:32,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-27 21:42:32,964 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-27 21:42:32,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:42:32,972 INFO L225 Difference]: With dead ends: 1911 [2020-08-27 21:42:32,972 INFO L226 Difference]: Without dead ends: 1153 [2020-08-27 21:42:32,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-27 21:42:32,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2020-08-27 21:42:33,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 1066. [2020-08-27 21:42:33,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-08-27 21:42:33,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1328 transitions. [2020-08-27 21:42:33,272 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1328 transitions. Word has length 61 [2020-08-27 21:42:33,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:42:33,273 INFO L479 AbstractCegarLoop]: Abstraction has 1066 states and 1328 transitions. [2020-08-27 21:42:33,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-27 21:42:33,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1328 transitions. [2020-08-27 21:42:33,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-27 21:42:33,279 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:42:33,280 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:42:33,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-27 21:42:33,281 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:42:33,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:42:33,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1580345337, now seen corresponding path program 1 times [2020-08-27 21:42:33,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:42:33,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985808203] [2020-08-27 21:42:33,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:42:33,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:33,743 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:42:33,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:42:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:33,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:42:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:33,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:42:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:33,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:33,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:42:33,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:33,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-27 21:42:33,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:33,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:42:33,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:33,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-27 21:42:33,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:33,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:33,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:33,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-27 21:42:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:33,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 21:42:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:33,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-27 21:42:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:33,951 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-27 21:42:33,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985808203] [2020-08-27 21:42:33,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:42:33,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-27 21:42:33,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482902066] [2020-08-27 21:42:33,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-27 21:42:33,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:42:33,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-27 21:42:33,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-27 21:42:33,953 INFO L87 Difference]: Start difference. First operand 1066 states and 1328 transitions. Second operand 10 states. [2020-08-27 21:42:34,687 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-27 21:42:35,355 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:42:37,587 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:42:39,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:42:39,472 INFO L93 Difference]: Finished difference Result 2035 states and 2637 transitions. [2020-08-27 21:42:39,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-27 21:42:39,472 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-27 21:42:39,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:42:39,481 INFO L225 Difference]: With dead ends: 2035 [2020-08-27 21:42:39,481 INFO L226 Difference]: Without dead ends: 1270 [2020-08-27 21:42:39,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-27 21:42:39,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2020-08-27 21:42:39,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1173. [2020-08-27 21:42:39,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1173 states. [2020-08-27 21:42:39,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1439 transitions. [2020-08-27 21:42:39,698 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1439 transitions. Word has length 88 [2020-08-27 21:42:39,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:42:39,698 INFO L479 AbstractCegarLoop]: Abstraction has 1173 states and 1439 transitions. [2020-08-27 21:42:39,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-27 21:42:39,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1439 transitions. [2020-08-27 21:42:39,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-08-27 21:42:39,705 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:42:39,705 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-27 21:42:39,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-27 21:42:39,706 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:42:39,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:42:39,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1992976932, now seen corresponding path program 1 times [2020-08-27 21:42:39,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:42:39,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961262234] [2020-08-27 21:42:39,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:42:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,017 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:42:40,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:42:40,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:42:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:42:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:42:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:42:40,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:42:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:40,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:40,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:40,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-27 21:42:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:40,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-27 21:42:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 21:42:40,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-27 21:42:40,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-27 21:42:40,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-27 21:42:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,264 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-27 21:42:40,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961262234] [2020-08-27 21:42:40,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:42:40,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-27 21:42:40,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155961052] [2020-08-27 21:42:40,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-27 21:42:40,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:42:40,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-27 21:42:40,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-27 21:42:40,273 INFO L87 Difference]: Start difference. First operand 1173 states and 1439 transitions. Second operand 10 states. [2020-08-27 21:42:41,329 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:41,626 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:42:41,949 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:42,266 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:43,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:42:43,370 INFO L93 Difference]: Finished difference Result 2475 states and 3246 transitions. [2020-08-27 21:42:43,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-27 21:42:43,371 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 141 [2020-08-27 21:42:43,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:42:43,379 INFO L225 Difference]: With dead ends: 2475 [2020-08-27 21:42:43,380 INFO L226 Difference]: Without dead ends: 1326 [2020-08-27 21:42:43,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-27 21:42:43,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2020-08-27 21:42:43,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1203. [2020-08-27 21:42:43,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1203 states. [2020-08-27 21:42:43,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1473 transitions. [2020-08-27 21:42:43,671 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1473 transitions. Word has length 141 [2020-08-27 21:42:43,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:42:43,672 INFO L479 AbstractCegarLoop]: Abstraction has 1203 states and 1473 transitions. [2020-08-27 21:42:43,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-27 21:42:43,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1473 transitions. [2020-08-27 21:42:43,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-08-27 21:42:43,680 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:42:43,680 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-27 21:42:43,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-27 21:42:43,681 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:42:43,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:42:43,682 INFO L82 PathProgramCache]: Analyzing trace with hash -837522872, now seen corresponding path program 1 times [2020-08-27 21:42:43,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:42:43,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135122696] [2020-08-27 21:42:43,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:42:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:44,001 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:42:44,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:42:44,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:44,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:42:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:44,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:42:44,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:44,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:44,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:44,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:42:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:44,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:42:44,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:44,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:44,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:44,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:44,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:44,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:44,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:44,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:42:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:44,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:44,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:44,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:44,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:44,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:44,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-27 21:42:44,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:44,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:44,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:44,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-27 21:42:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:44,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-27 21:42:44,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:44,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-27 21:42:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:44,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:44,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:44,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:44,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-27 21:42:44,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:44,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-27 21:42:44,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:44,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-27 21:42:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:44,285 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-27 21:42:44,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135122696] [2020-08-27 21:42:44,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:42:44,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-27 21:42:44,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19496229] [2020-08-27 21:42:44,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-27 21:42:44,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:42:44,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-27 21:42:44,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:42:44,288 INFO L87 Difference]: Start difference. First operand 1203 states and 1473 transitions. Second operand 12 states. [2020-08-27 21:42:44,900 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:45,172 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:45,467 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:46,207 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:46,549 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:46,840 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:48,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:42:48,146 INFO L93 Difference]: Finished difference Result 2205 states and 2787 transitions. [2020-08-27 21:42:48,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-27 21:42:48,147 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 145 [2020-08-27 21:42:48,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:42:48,154 INFO L225 Difference]: With dead ends: 2205 [2020-08-27 21:42:48,154 INFO L226 Difference]: Without dead ends: 1026 [2020-08-27 21:42:48,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-27 21:42:48,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2020-08-27 21:42:48,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 970. [2020-08-27 21:42:48,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-08-27 21:42:48,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1172 transitions. [2020-08-27 21:42:48,333 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1172 transitions. Word has length 145 [2020-08-27 21:42:48,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:42:48,333 INFO L479 AbstractCegarLoop]: Abstraction has 970 states and 1172 transitions. [2020-08-27 21:42:48,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-27 21:42:48,334 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1172 transitions. [2020-08-27 21:42:48,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-08-27 21:42:48,337 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:42:48,337 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-27 21:42:48,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-27 21:42:48,338 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:42:48,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:42:48,338 INFO L82 PathProgramCache]: Analyzing trace with hash -872576729, now seen corresponding path program 1 times [2020-08-27 21:42:48,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:42:48,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990764082] [2020-08-27 21:42:48,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:42:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:48,700 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:42:48,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:42:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:48,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:42:48,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:48,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:42:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:48,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:48,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:42:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:48,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-27 21:42:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:48,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-27 21:42:48,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:48,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:48,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:48,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:48,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:48,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:48,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:42:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:48,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:48,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:48,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:48,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:48,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:48,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-27 21:42:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:48,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:48,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:48,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-27 21:42:48,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:48,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-27 21:42:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:48,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:48,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:48,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-27 21:42:48,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:48,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-27 21:42:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:48,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-27 21:42:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:49,000 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-27 21:42:49,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990764082] [2020-08-27 21:42:49,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:42:49,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-27 21:42:49,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914425385] [2020-08-27 21:42:49,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-27 21:42:49,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:42:49,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-27 21:42:49,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-27 21:42:49,003 INFO L87 Difference]: Start difference. First operand 970 states and 1172 transitions. Second operand 13 states. [2020-08-27 21:42:49,595 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:42:50,395 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:52,031 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:52,450 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:52,797 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:53,093 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:42:53,465 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:42:53,778 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:42:54,793 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:55,096 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:55,455 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:42:55,765 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:42:56,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:42:56,537 INFO L93 Difference]: Finished difference Result 2803 states and 3512 transitions. [2020-08-27 21:42:56,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-27 21:42:56,538 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 145 [2020-08-27 21:42:56,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:42:56,548 INFO L225 Difference]: With dead ends: 2803 [2020-08-27 21:42:56,548 INFO L226 Difference]: Without dead ends: 1857 [2020-08-27 21:42:56,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2020-08-27 21:42:56,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2020-08-27 21:42:56,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 1755. [2020-08-27 21:42:56,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1755 states. [2020-08-27 21:42:56,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 2091 transitions. [2020-08-27 21:42:56,872 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 2091 transitions. Word has length 145 [2020-08-27 21:42:56,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:42:56,874 INFO L479 AbstractCegarLoop]: Abstraction has 1755 states and 2091 transitions. [2020-08-27 21:42:56,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-27 21:42:56,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 2091 transitions. [2020-08-27 21:42:56,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-27 21:42:56,880 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:42:56,880 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-27 21:42:56,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-27 21:42:56,881 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:42:56,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:42:56,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1489780363, now seen corresponding path program 1 times [2020-08-27 21:42:56,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:42:56,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111715657] [2020-08-27 21:42:56,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:42:56,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:57,319 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:42:57,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:42:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:57,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:42:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:57,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:42:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:57,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:57,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:42:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:57,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-27 21:42:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:57,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-27 21:42:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:57,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-27 21:42:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:57,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:57,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:57,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:57,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:57,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:57,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:57,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:57,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:42:57,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:57,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:57,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:57,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:57,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:57,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:57,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-27 21:42:57,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:57,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:57,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:57,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-27 21:42:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:57,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-27 21:42:57,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:57,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:57,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:57,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-27 21:42:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:57,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-27 21:42:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:57,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-27 21:42:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:57,825 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-27 21:42:57,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111715657] [2020-08-27 21:42:57,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:42:57,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-27 21:42:57,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229031522] [2020-08-27 21:42:57,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-27 21:42:57,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:42:57,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-27 21:42:57,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-08-27 21:42:57,829 INFO L87 Difference]: Start difference. First operand 1755 states and 2091 transitions. Second operand 18 states. [2020-08-27 21:42:58,634 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:42:59,144 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:42:59,530 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:42:59,800 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:43:00,516 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:43:02,477 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:43:02,958 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:43:03,293 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:43:03,599 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:43:04,061 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:43:04,378 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:43:05,016 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 190 [2020-08-27 21:43:05,638 WARN L193 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 190