/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:59:38,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:59:38,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:59:38,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:59:38,862 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:59:38,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:59:38,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:59:38,878 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:59:38,880 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:59:38,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:59:38,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:59:38,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:59:38,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:59:38,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:59:38,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:59:38,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:59:38,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:59:38,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:59:38,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:59:38,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:59:38,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:59:38,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:59:38,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:59:38,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:59:38,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:59:38,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:59:38,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:59:38,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:59:38,910 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:59:38,911 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:59:38,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:59:38,914 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:59:38,915 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:59:38,916 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:59:38,920 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:59:38,920 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:59:38,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:59:38,922 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:59:38,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:59:38,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:59:38,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:59:38,925 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 21:59:38,945 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:59:38,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:59:38,947 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:59:38,947 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:59:38,947 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:59:38,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:59:38,948 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:59:38,948 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:59:38,948 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:59:38,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:59:38,948 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:59:38,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:59:38,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:59:38,949 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:59:38,949 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:59:38,950 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:59:38,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:59:38,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:59:38,950 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:59:38,950 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:59:38,951 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:59:38,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:59:38,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:59:38,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:59:38,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:59:38,952 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:59:38,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:59:38,952 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:59:38,952 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:59:39,232 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:59:39,244 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:59:39,247 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:59:39,249 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:59:39,249 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:59:39,250 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product63.cil.c [2019-11-06 21:59:39,321 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1200743e1/05f858f375264d82ab4a10b8bba6041c/FLAG08befdf23 [2019-11-06 21:59:39,816 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:59:39,817 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product63.cil.c [2019-11-06 21:59:39,830 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1200743e1/05f858f375264d82ab4a10b8bba6041c/FLAG08befdf23 [2019-11-06 21:59:40,169 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1200743e1/05f858f375264d82ab4a10b8bba6041c [2019-11-06 21:59:40,177 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:59:40,178 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:59:40,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:59:40,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:59:40,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:59:40,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:59:40" (1/1) ... [2019-11-06 21:59:40,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61f3de09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:40, skipping insertion in model container [2019-11-06 21:59:40,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:59:40" (1/1) ... [2019-11-06 21:59:40,194 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:59:40,259 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:59:40,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:59:40,772 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:59:40,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:59:40,917 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:59:40,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:40 WrapperNode [2019-11-06 21:59:40,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:59:40,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:59:40,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:59:40,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:59:40,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:40" (1/1) ... [2019-11-06 21:59:40,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:40" (1/1) ... [2019-11-06 21:59:40,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:40" (1/1) ... [2019-11-06 21:59:40,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:40" (1/1) ... [2019-11-06 21:59:40,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:40" (1/1) ... [2019-11-06 21:59:40,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:40" (1/1) ... [2019-11-06 21:59:40,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:40" (1/1) ... [2019-11-06 21:59:41,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:59:41,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:59:41,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:59:41,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:59:41,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-11-06 21:59:41,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:59:41,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:59:41,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 21:59:41,081 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 21:59:41,081 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 21:59:41,082 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 21:59:41,082 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 21:59:41,082 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:59:41,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 21:59:41,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-11-06 21:59:41,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-11-06 21:59:41,083 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-06 21:59:41,084 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-06 21:59:41,084 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-06 21:59:41,085 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-06 21:59:41,085 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-06 21:59:41,087 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-06 21:59:41,088 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-06 21:59:41,088 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-11-06 21:59:41,088 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 21:59:41,088 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 21:59:41,088 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-06 21:59:41,089 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 21:59:41,089 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-11-06 21:59:41,089 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-06 21:59:41,089 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-11-06 21:59:41,089 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-06 21:59:41,090 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-06 21:59:41,090 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-06 21:59:41,090 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-06 21:59:41,090 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-06 21:59:41,090 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-06 21:59:41,090 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-11-06 21:59:41,090 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-11-06 21:59:41,091 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 21:59:41,091 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 21:59:41,091 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 21:59:41,091 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 21:59:41,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 21:59:41,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 21:59:41,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 21:59:41,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 21:59:41,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 21:59:41,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 21:59:41,093 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:59:41,093 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:59:41,094 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 21:59:41,094 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 21:59:41,094 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 21:59:41,094 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-06 21:59:41,094 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-06 21:59:41,095 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-06 21:59:41,095 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 21:59:41,095 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 21:59:41,095 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-11-06 21:59:41,095 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 21:59:41,095 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 21:59:41,096 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 21:59:41,096 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 21:59:41,096 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 21:59:41,096 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:59:41,096 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 21:59:41,096 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-06 21:59:41,097 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-06 21:59:41,097 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-11-06 21:59:41,097 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-06 21:59:41,097 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-06 21:59:41,098 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-06 21:59:41,098 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-06 21:59:41,098 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-11-06 21:59:41,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:59:41,098 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-11-06 21:59:41,098 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-06 21:59:41,099 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-06 21:59:41,099 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-06 21:59:41,100 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-06 21:59:41,100 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-06 21:59:41,100 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 21:59:41,100 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-11-06 21:59:41,100 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-11-06 21:59:41,101 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-06 21:59:41,101 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-11-06 21:59:41,102 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 21:59:41,102 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 21:59:41,102 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 21:59:41,102 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 21:59:41,103 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 21:59:41,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 21:59:41,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 21:59:41,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:59:41,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 21:59:41,105 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 21:59:41,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:59:41,106 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 21:59:41,106 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 21:59:41,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:59:41,106 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 21:59:41,106 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 21:59:41,106 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 21:59:41,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:59:41,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 21:59:41,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:59:42,366 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:59:42,367 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 21:59:42,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:59:42 BoogieIcfgContainer [2019-11-06 21:59:42,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:59:42,370 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:59:42,371 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:59:42,374 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:59:42,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:59:40" (1/3) ... [2019-11-06 21:59:42,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796220f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:59:42, skipping insertion in model container [2019-11-06 21:59:42,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:40" (2/3) ... [2019-11-06 21:59:42,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796220f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:59:42, skipping insertion in model container [2019-11-06 21:59:42,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:59:42" (3/3) ... [2019-11-06 21:59:42,379 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product63.cil.c [2019-11-06 21:59:42,389 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:59:42,400 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:59:42,414 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:59:42,459 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:59:42,459 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:59:42,459 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:59:42,460 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:59:42,460 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:59:42,460 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:59:42,461 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:59:42,462 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:59:42,491 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states. [2019-11-06 21:59:42,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-06 21:59:42,505 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:59:42,506 INFO L410 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] [2019-11-06 21:59:42,509 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:59:42,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:59:42,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1165852340, now seen corresponding path program 1 times [2019-11-06 21:59:42,524 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:59:42,524 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167568954] [2019-11-06 21:59:42,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:59:42,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:43,202 WARN L191 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:59:43,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:43,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:43,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:43,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:43,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:59:43,313 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167568954] [2019-11-06 21:59:43,314 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:59:43,314 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 21:59:43,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830680043] [2019-11-06 21:59:43,320 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:59:43,320 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:59:43,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:59:43,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:59:43,337 INFO L87 Difference]: Start difference. First operand 204 states. Second operand 4 states. [2019-11-06 21:59:44,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:59:44,836 INFO L93 Difference]: Finished difference Result 359 states and 469 transitions. [2019-11-06 21:59:44,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:59:44,837 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-11-06 21:59:44,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:59:44,853 INFO L225 Difference]: With dead ends: 359 [2019-11-06 21:59:44,853 INFO L226 Difference]: Without dead ends: 199 [2019-11-06 21:59:44,858 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:59:44,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2019-11-06 21:59:44,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 161. [2019-11-06 21:59:44,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2019-11-06 21:59:44,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 193 transitions. [2019-11-06 21:59:44,952 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 193 transitions. Word has length 51 [2019-11-06 21:59:44,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:59:44,953 INFO L462 AbstractCegarLoop]: Abstraction has 161 states and 193 transitions. [2019-11-06 21:59:44,953 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:59:44,953 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 193 transitions. [2019-11-06 21:59:44,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-11-06 21:59:44,957 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:59:44,957 INFO L410 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] [2019-11-06 21:59:44,958 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:59:44,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:59:44,958 INFO L82 PathProgramCache]: Analyzing trace with hash -558328651, now seen corresponding path program 1 times [2019-11-06 21:59:44,958 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:59:44,959 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328313363] [2019-11-06 21:59:44,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:59:45,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:45,324 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:59:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:45,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:45,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:45,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:59:45,374 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328313363] [2019-11-06 21:59:45,374 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:59:45,374 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 21:59:45,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027217586] [2019-11-06 21:59:45,376 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 21:59:45,377 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:59:45,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 21:59:45,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:59:45,377 INFO L87 Difference]: Start difference. First operand 161 states and 193 transitions. Second operand 5 states. [2019-11-06 21:59:45,925 WARN L191 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:59:47,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:59:47,154 INFO L93 Difference]: Finished difference Result 298 states and 372 transitions. [2019-11-06 21:59:47,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:59:47,155 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2019-11-06 21:59:47,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:59:47,159 INFO L225 Difference]: With dead ends: 298 [2019-11-06 21:59:47,159 INFO L226 Difference]: Without dead ends: 189 [2019-11-06 21:59:47,161 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:59:47,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2019-11-06 21:59:47,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 152. [2019-11-06 21:59:47,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2019-11-06 21:59:47,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 181 transitions. [2019-11-06 21:59:47,207 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 181 transitions. Word has length 52 [2019-11-06 21:59:47,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:59:47,207 INFO L462 AbstractCegarLoop]: Abstraction has 152 states and 181 transitions. [2019-11-06 21:59:47,207 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 21:59:47,207 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 181 transitions. [2019-11-06 21:59:47,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-06 21:59:47,210 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:59:47,210 INFO L410 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] [2019-11-06 21:59:47,210 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:59:47,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:59:47,211 INFO L82 PathProgramCache]: Analyzing trace with hash 2137633786, now seen corresponding path program 1 times [2019-11-06 21:59:47,211 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:59:47,211 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939512318] [2019-11-06 21:59:47,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:59:47,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:47,654 WARN L191 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:59:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:47,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:47,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:47,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:47,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:59:47,748 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939512318] [2019-11-06 21:59:47,748 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:59:47,748 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 21:59:47,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531919164] [2019-11-06 21:59:47,749 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 21:59:47,749 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:59:47,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 21:59:47,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:59:47,750 INFO L87 Difference]: Start difference. First operand 152 states and 181 transitions. Second operand 9 states. [2019-11-06 21:59:48,205 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:59:48,553 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:59:48,848 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:59:49,112 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:59:50,074 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:59:52,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:59:52,797 INFO L93 Difference]: Finished difference Result 512 states and 649 transitions. [2019-11-06 21:59:52,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 21:59:52,797 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2019-11-06 21:59:52,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:59:52,803 INFO L225 Difference]: With dead ends: 512 [2019-11-06 21:59:52,803 INFO L226 Difference]: Without dead ends: 388 [2019-11-06 21:59:52,805 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2019-11-06 21:59:52,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2019-11-06 21:59:52,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 319. [2019-11-06 21:59:52,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2019-11-06 21:59:52,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 392 transitions. [2019-11-06 21:59:52,882 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 392 transitions. Word has length 56 [2019-11-06 21:59:52,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:59:52,883 INFO L462 AbstractCegarLoop]: Abstraction has 319 states and 392 transitions. [2019-11-06 21:59:52,883 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 21:59:52,883 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 392 transitions. [2019-11-06 21:59:52,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-11-06 21:59:52,886 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:59:52,886 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:59:52,886 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:59:52,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:59:52,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1129081232, now seen corresponding path program 1 times [2019-11-06 21:59:52,887 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:59:52,887 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220733086] [2019-11-06 21:59:52,887 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:59:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:53,232 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:59:53,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:53,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:53,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:53,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:59:53,320 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220733086] [2019-11-06 21:59:53,320 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:59:53,320 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 21:59:53,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562106669] [2019-11-06 21:59:53,321 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 21:59:53,321 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:59:53,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 21:59:53,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:59:53,322 INFO L87 Difference]: Start difference. First operand 319 states and 392 transitions. Second operand 9 states. [2019-11-06 21:59:53,812 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:59:54,903 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:59:55,467 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:59:55,844 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:59:56,154 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:59:58,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:59:58,180 INFO L93 Difference]: Finished difference Result 1023 states and 1347 transitions. [2019-11-06 21:59:58,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-06 21:59:58,180 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2019-11-06 21:59:58,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:59:58,188 INFO L225 Difference]: With dead ends: 1023 [2019-11-06 21:59:58,189 INFO L226 Difference]: Without dead ends: 732 [2019-11-06 21:59:58,191 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2019-11-06 21:59:58,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2019-11-06 21:59:58,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 586. [2019-11-06 21:59:58,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2019-11-06 21:59:58,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 724 transitions. [2019-11-06 21:59:58,342 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 724 transitions. Word has length 62 [2019-11-06 21:59:58,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:59:58,343 INFO L462 AbstractCegarLoop]: Abstraction has 586 states and 724 transitions. [2019-11-06 21:59:58,343 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 21:59:58,343 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 724 transitions. [2019-11-06 21:59:58,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-11-06 21:59:58,348 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:59:58,348 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:59:58,348 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:59:58,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:59:58,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1112141772, now seen corresponding path program 1 times [2019-11-06 21:59:58,349 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:59:58,349 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992790616] [2019-11-06 21:59:58,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:59:58,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:58,691 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:59:58,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:58,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:58,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:58,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:58,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:58,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:58,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:59:58,808 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992790616] [2019-11-06 21:59:58,808 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:59:58,809 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-06 21:59:58,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254543998] [2019-11-06 21:59:58,810 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 21:59:58,811 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:59:58,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 21:59:58,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:59:58,812 INFO L87 Difference]: Start difference. First operand 586 states and 724 transitions. Second operand 10 states. [2019-11-06 21:59:59,342 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:00:00,479 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:00:00,788 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:00:01,076 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:00:01,985 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:00:03,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:03,469 INFO L93 Difference]: Finished difference Result 1615 states and 2190 transitions. [2019-11-06 22:00:03,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-11-06 22:00:03,470 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2019-11-06 22:00:03,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:03,481 INFO L225 Difference]: With dead ends: 1615 [2019-11-06 22:00:03,481 INFO L226 Difference]: Without dead ends: 1057 [2019-11-06 22:00:03,484 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2019-11-06 22:00:03,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2019-11-06 22:00:03,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 861. [2019-11-06 22:00:03,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2019-11-06 22:00:03,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1047 transitions. [2019-11-06 22:00:03,697 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1047 transitions. Word has length 66 [2019-11-06 22:00:03,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:03,698 INFO L462 AbstractCegarLoop]: Abstraction has 861 states and 1047 transitions. [2019-11-06 22:00:03,698 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 22:00:03,698 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1047 transitions. [2019-11-06 22:00:03,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-11-06 22:00:03,705 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:03,706 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:00:03,706 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:03,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:03,707 INFO L82 PathProgramCache]: Analyzing trace with hash 831572138, now seen corresponding path program 1 times [2019-11-06 22:00:03,707 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:03,707 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213609806] [2019-11-06 22:00:03,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:04,009 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:04,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:04,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:04,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:04,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:04,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:04,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:04,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:04,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:04,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:04,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:00:04,236 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213609806] [2019-11-06 22:00:04,236 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:04,237 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-06 22:00:04,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257560291] [2019-11-06 22:00:04,237 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 22:00:04,238 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:04,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 22:00:04,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:00:04,238 INFO L87 Difference]: Start difference. First operand 861 states and 1047 transitions. Second operand 12 states. [2019-11-06 22:00:04,899 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:00:05,173 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:00:05,456 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:00:06,291 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:00:06,580 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:00:06,869 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:00:08,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:08,418 INFO L93 Difference]: Finished difference Result 1974 states and 2667 transitions. [2019-11-06 22:00:08,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-06 22:00:08,419 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2019-11-06 22:00:08,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:08,428 INFO L225 Difference]: With dead ends: 1974 [2019-11-06 22:00:08,428 INFO L226 Difference]: Without dead ends: 1141 [2019-11-06 22:00:08,432 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2019-11-06 22:00:08,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2019-11-06 22:00:08,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 883. [2019-11-06 22:00:08,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2019-11-06 22:00:08,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1071 transitions. [2019-11-06 22:00:08,610 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1071 transitions. Word has length 108 [2019-11-06 22:00:08,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:08,611 INFO L462 AbstractCegarLoop]: Abstraction has 883 states and 1071 transitions. [2019-11-06 22:00:08,611 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-06 22:00:08,611 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1071 transitions. [2019-11-06 22:00:08,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-11-06 22:00:08,614 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:08,614 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:00:08,615 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:08,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:08,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1107589908, now seen corresponding path program 1 times [2019-11-06 22:00:08,615 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:08,616 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531315545] [2019-11-06 22:00:08,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:08,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:08,895 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:08,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:08,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:08,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:08,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:08,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:09,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:09,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:09,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:00:09,128 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531315545] [2019-11-06 22:00:09,128 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:09,128 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-06 22:00:09,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004489985] [2019-11-06 22:00:09,130 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 22:00:09,130 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:09,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 22:00:09,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:00:09,131 INFO L87 Difference]: Start difference. First operand 883 states and 1071 transitions. Second operand 10 states. [2019-11-06 22:00:10,421 WARN L191 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:00:10,766 WARN L191 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-11-06 22:00:11,045 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:00:11,340 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:00:12,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:12,777 INFO L93 Difference]: Finished difference Result 2012 states and 2707 transitions. [2019-11-06 22:00:12,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 22:00:12,782 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 108 [2019-11-06 22:00:12,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:12,790 INFO L225 Difference]: With dead ends: 2012 [2019-11-06 22:00:12,790 INFO L226 Difference]: Without dead ends: 1157 [2019-11-06 22:00:12,793 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2019-11-06 22:00:12,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2019-11-06 22:00:13,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 903. [2019-11-06 22:00:13,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 903 states. [2019-11-06 22:00:13,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1091 transitions. [2019-11-06 22:00:13,012 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1091 transitions. Word has length 108 [2019-11-06 22:00:13,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:13,012 INFO L462 AbstractCegarLoop]: Abstraction has 903 states and 1091 transitions. [2019-11-06 22:00:13,013 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 22:00:13,013 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1091 transitions. [2019-11-06 22:00:13,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-11-06 22:00:13,016 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:13,017 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:00:13,017 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:13,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:13,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1600742153, now seen corresponding path program 1 times [2019-11-06 22:00:13,017 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:13,018 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074326390] [2019-11-06 22:00:13,019 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:13,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,360 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:13,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:00:13,518 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074326390] [2019-11-06 22:00:13,519 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:13,519 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 22:00:13,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991334088] [2019-11-06 22:00:13,520 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:00:13,520 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:13,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:00:13,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:00:13,521 INFO L87 Difference]: Start difference. First operand 903 states and 1091 transitions. Second operand 8 states. [2019-11-06 22:00:13,962 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:00:14,519 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:00:17,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:17,520 INFO L93 Difference]: Finished difference Result 2962 states and 4021 transitions. [2019-11-06 22:00:17,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-06 22:00:17,521 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 108 [2019-11-06 22:00:17,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:17,534 INFO L225 Difference]: With dead ends: 2962 [2019-11-06 22:00:17,534 INFO L226 Difference]: Without dead ends: 2087 [2019-11-06 22:00:17,538 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2019-11-06 22:00:17,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2087 states. [2019-11-06 22:00:17,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2087 to 1743. [2019-11-06 22:00:17,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1743 states. [2019-11-06 22:00:17,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1743 states to 1743 states and 2133 transitions. [2019-11-06 22:00:17,829 INFO L78 Accepts]: Start accepts. Automaton has 1743 states and 2133 transitions. Word has length 108 [2019-11-06 22:00:17,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:17,829 INFO L462 AbstractCegarLoop]: Abstraction has 1743 states and 2133 transitions. [2019-11-06 22:00:17,829 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:00:17,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1743 states and 2133 transitions. [2019-11-06 22:00:17,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-11-06 22:00:17,834 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:17,835 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:00:17,835 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:17,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:17,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1324720637, now seen corresponding path program 1 times [2019-11-06 22:00:17,835 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:17,836 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033442080] [2019-11-06 22:00:17,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:18,249 WARN L191 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:18,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:18,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:18,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:18,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:18,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:18,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:18,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:18,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:18,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:18,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:18,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:18,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:00:18,590 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033442080] [2019-11-06 22:00:18,594 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810318842] [2019-11-06 22:00:18,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:00:18,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:18,822 INFO L256 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-06 22:00:18,851 INFO L279 TraceCheckSpWp]: Computing forward predicates...