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_spec5_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:42:05,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:42:05,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:42:05,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:42:05,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:42:05,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:42:05,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:42:05,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:42:05,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:42:05,955 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:42:05,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:42:05,958 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:42:05,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:42:05,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:42:05,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:42:05,963 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:42:05,965 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:42:05,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:42:05,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:42:05,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:42:05,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:42:05,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:42:05,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:42:05,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:42:05,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:42:05,985 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:42:05,985 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:42:05,987 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:42:05,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:42:05,989 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:42:05,989 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:42:05,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:42:05,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:42:05,992 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:42:05,993 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:42:05,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:42:05,994 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:42:05,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:42:05,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:42:05,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:42:05,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:42:05,997 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 [2019-10-13 19:42:06,012 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:42:06,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:42:06,014 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:42:06,014 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:42:06,014 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:42:06,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:42:06,015 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:42:06,015 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:42:06,015 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:42:06,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:42:06,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:42:06,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:42:06,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:42:06,016 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:42:06,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:42:06,016 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:42:06,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:42:06,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:42:06,017 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:42:06,017 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:42:06,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:42:06,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:42:06,018 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:42:06,018 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:42:06,018 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:42:06,018 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:42:06,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:42:06,019 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:42:06,019 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:42:06,292 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:42:06,311 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:42:06,315 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:42:06,317 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:42:06,317 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:42:06,318 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product51.cil.c [2019-10-13 19:42:06,390 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82a2cb13e/fd91f39bd66749fba6fc6afdfe148e9b/FLAGc78b2f89b [2019-10-13 19:42:06,911 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:42:06,912 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product51.cil.c [2019-10-13 19:42:06,931 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82a2cb13e/fd91f39bd66749fba6fc6afdfe148e9b/FLAGc78b2f89b [2019-10-13 19:42:07,208 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82a2cb13e/fd91f39bd66749fba6fc6afdfe148e9b [2019-10-13 19:42:07,218 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:42:07,221 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:42:07,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:42:07,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:42:07,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:42:07,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:42:07" (1/1) ... [2019-10-13 19:42:07,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4772fc27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:07, skipping insertion in model container [2019-10-13 19:42:07,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:42:07" (1/1) ... [2019-10-13 19:42:07,239 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:42:07,309 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:42:07,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:42:07,749 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:42:07,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:42:07,881 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:42:07,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:07 WrapperNode [2019-10-13 19:42:07,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:42:07,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:42:07,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:42:07,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:42:07,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:07" (1/1) ... [2019-10-13 19:42:07,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:07" (1/1) ... [2019-10-13 19:42:07,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:07" (1/1) ... [2019-10-13 19:42:07,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:07" (1/1) ... [2019-10-13 19:42:07,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:07" (1/1) ... [2019-10-13 19:42:07,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:07" (1/1) ... [2019-10-13 19:42:07,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:07" (1/1) ... [2019-10-13 19:42:07,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:42:07,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:42:07,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:42:07,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:42:07,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:07" (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 [2019-10-13 19:42:08,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:42:08,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:42:08,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:42:08,041 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:42:08,041 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:42:08,042 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:42:08,042 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:42:08,042 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:42:08,043 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:42:08,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:42:08,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:42:08,043 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:42:08,044 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:42:08,044 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 19:42:08,045 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-13 19:42:08,046 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:42:08,048 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:42:08,048 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:42:08,049 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:42:08,049 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:42:08,049 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:42:08,049 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:42:08,049 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:42:08,050 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:42:08,050 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:42:08,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:42:08,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:42:08,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:42:08,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:42:08,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:42:08,051 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:42:08,051 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:42:08,051 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:42:08,051 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:42:08,051 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:42:08,051 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:42:08,052 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:42:08,052 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:42:08,052 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 19:42:08,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:42:08,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-10-13 19:42:08,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-10-13 19:42:08,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-10-13 19:42:08,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:42:08,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:42:08,053 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:42:08,053 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:42:08,054 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:42:08,055 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:42:08,055 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:42:08,055 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 19:42:08,055 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:42:08,055 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:42:08,055 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:42:08,056 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:42:08,056 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:42:08,056 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-13 19:42:08,056 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-10-13 19:42:08,056 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-10-13 19:42:08,056 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:42:08,057 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:42:08,057 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:42:08,057 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:42:08,057 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 19:42:08,058 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:42:08,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:42:08,058 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:42:08,058 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:42:08,059 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:42:08,059 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:42:08,059 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:42:08,059 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-10-13 19:42:08,059 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:42:08,060 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:42:08,060 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:42:08,061 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:42:08,061 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:42:08,061 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:42:08,061 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:42:08,061 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:42:08,061 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:42:08,062 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:42:08,062 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:42:08,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:42:08,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:42:08,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:42:08,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:42:08,064 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:42:08,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:42:08,064 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:42:08,064 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:42:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:42:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:42:08,066 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:42:08,066 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:42:08,066 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:42:08,066 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:42:08,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:42:08,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:42:08,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:42:09,192 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:42:09,192 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:42:09,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:42:09 BoogieIcfgContainer [2019-10-13 19:42:09,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:42:09,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:42:09,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:42:09,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:42:09,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:42:07" (1/3) ... [2019-10-13 19:42:09,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee10b24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:42:09, skipping insertion in model container [2019-10-13 19:42:09,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:07" (2/3) ... [2019-10-13 19:42:09,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee10b24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:42:09, skipping insertion in model container [2019-10-13 19:42:09,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:42:09" (3/3) ... [2019-10-13 19:42:09,206 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product51.cil.c [2019-10-13 19:42:09,217 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:42:09,227 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:42:09,238 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:42:09,274 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:42:09,274 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:42:09,274 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:42:09,274 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:42:09,275 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:42:09,275 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:42:09,276 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:42:09,276 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:42:09,300 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states. [2019-10-13 19:42:09,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-10-13 19:42:09,310 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:42:09,311 INFO L380 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] [2019-10-13 19:42:09,313 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:42:09,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:42:09,319 INFO L82 PathProgramCache]: Analyzing trace with hash -878720759, now seen corresponding path program 1 times [2019-10-13 19:42:09,327 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:42:09,328 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349631305] [2019-10-13 19:42:09,328 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:09,328 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:09,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:42:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:10,011 WARN L191 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:42:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:10,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:10,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:10,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:10,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:10,155 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:42:10,155 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349631305] [2019-10-13 19:42:10,156 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:42:10,157 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:42:10,157 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471141705] [2019-10-13 19:42:10,163 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:42:10,164 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:42:10,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:42:10,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:42:10,180 INFO L87 Difference]: Start difference. First operand 187 states. Second operand 4 states. [2019-10-13 19:42:11,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:42:11,350 INFO L93 Difference]: Finished difference Result 318 states and 410 transitions. [2019-10-13 19:42:11,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:42:11,352 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2019-10-13 19:42:11,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:42:11,375 INFO L225 Difference]: With dead ends: 318 [2019-10-13 19:42:11,376 INFO L226 Difference]: Without dead ends: 175 [2019-10-13 19:42:11,383 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:42:11,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2019-10-13 19:42:11,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 144. [2019-10-13 19:42:11,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-10-13 19:42:11,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 170 transitions. [2019-10-13 19:42:11,506 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 170 transitions. Word has length 59 [2019-10-13 19:42:11,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:42:11,507 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 170 transitions. [2019-10-13 19:42:11,507 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:42:11,507 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 170 transitions. [2019-10-13 19:42:11,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-10-13 19:42:11,520 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:42:11,520 INFO L380 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] [2019-10-13 19:42:11,521 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:42:11,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:42:11,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1980606616, now seen corresponding path program 1 times [2019-10-13 19:42:11,523 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:42:11,523 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151032716] [2019-10-13 19:42:11,523 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:11,523 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:11,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:42:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:11,900 WARN L191 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:42:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:11,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:11,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:11,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:11,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:42:11,977 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151032716] [2019-10-13 19:42:11,978 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:42:11,978 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:42:11,978 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346475302] [2019-10-13 19:42:11,980 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:42:11,980 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:42:11,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:42:11,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:42:11,981 INFO L87 Difference]: Start difference. First operand 144 states and 170 transitions. Second operand 5 states. [2019-10-13 19:42:12,449 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:13,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:42:13,315 INFO L93 Difference]: Finished difference Result 257 states and 314 transitions. [2019-10-13 19:42:13,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:42:13,316 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2019-10-13 19:42:13,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:42:13,319 INFO L225 Difference]: With dead ends: 257 [2019-10-13 19:42:13,320 INFO L226 Difference]: Without dead ends: 165 [2019-10-13 19:42:13,321 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:42:13,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2019-10-13 19:42:13,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 135. [2019-10-13 19:42:13,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2019-10-13 19:42:13,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 158 transitions. [2019-10-13 19:42:13,355 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 158 transitions. Word has length 60 [2019-10-13 19:42:13,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:42:13,355 INFO L462 AbstractCegarLoop]: Abstraction has 135 states and 158 transitions. [2019-10-13 19:42:13,356 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:42:13,356 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 158 transitions. [2019-10-13 19:42:13,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-10-13 19:42:13,357 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:42:13,357 INFO L380 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] [2019-10-13 19:42:13,358 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:42:13,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:42:13,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1839911150, now seen corresponding path program 1 times [2019-10-13 19:42:13,358 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:42:13,359 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460614740] [2019-10-13 19:42:13,359 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:13,359 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:13,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:42:13,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:13,722 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:42:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:13,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:13,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:13,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:13,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:13,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:13,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:42:13,816 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460614740] [2019-10-13 19:42:13,816 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:42:13,816 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:42:13,817 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435048171] [2019-10-13 19:42:13,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:42:13,817 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:42:13,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:42:13,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:42:13,818 INFO L87 Difference]: Start difference. First operand 135 states and 158 transitions. Second operand 9 states. [2019-10-13 19:42:14,236 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:42:14,569 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:42:14,860 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:42:15,128 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:42:16,059 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:17,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:42:17,892 INFO L93 Difference]: Finished difference Result 450 states and 558 transitions. [2019-10-13 19:42:17,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 19:42:17,893 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2019-10-13 19:42:17,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:42:17,898 INFO L225 Difference]: With dead ends: 450 [2019-10-13 19:42:17,899 INFO L226 Difference]: Without dead ends: 343 [2019-10-13 19:42:17,900 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:42:17,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2019-10-13 19:42:17,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 290. [2019-10-13 19:42:17,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2019-10-13 19:42:17,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 352 transitions. [2019-10-13 19:42:17,969 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 352 transitions. Word has length 64 [2019-10-13 19:42:17,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:42:17,970 INFO L462 AbstractCegarLoop]: Abstraction has 290 states and 352 transitions. [2019-10-13 19:42:17,970 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:42:17,970 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 352 transitions. [2019-10-13 19:42:17,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-13 19:42:17,972 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:42:17,972 INFO L380 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] [2019-10-13 19:42:17,972 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:42:17,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:42:17,973 INFO L82 PathProgramCache]: Analyzing trace with hash 423224560, now seen corresponding path program 1 times [2019-10-13 19:42:17,973 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:42:17,973 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147286692] [2019-10-13 19:42:17,973 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:17,973 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:17,974 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:42:17,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:18,277 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:42:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:18,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:18,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:18,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:18,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:42:18,428 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147286692] [2019-10-13 19:42:18,428 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:42:18,428 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:42:18,428 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128174563] [2019-10-13 19:42:18,429 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:42:18,429 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:42:18,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:42:18,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:42:18,430 INFO L87 Difference]: Start difference. First operand 290 states and 352 transitions. Second operand 9 states. [2019-10-13 19:42:18,845 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:42:19,534 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:42:20,466 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:42:20,791 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:21,106 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:42:21,404 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:42:22,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:42:22,199 INFO L93 Difference]: Finished difference Result 739 states and 964 transitions. [2019-10-13 19:42:22,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 19:42:22,200 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2019-10-13 19:42:22,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:42:22,207 INFO L225 Difference]: With dead ends: 739 [2019-10-13 19:42:22,207 INFO L226 Difference]: Without dead ends: 477 [2019-10-13 19:42:22,209 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2019-10-13 19:42:22,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2019-10-13 19:42:22,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 413. [2019-10-13 19:42:22,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2019-10-13 19:42:22,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 499 transitions. [2019-10-13 19:42:22,300 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 499 transitions. Word has length 70 [2019-10-13 19:42:22,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:42:22,300 INFO L462 AbstractCegarLoop]: Abstraction has 413 states and 499 transitions. [2019-10-13 19:42:22,300 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:42:22,301 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 499 transitions. [2019-10-13 19:42:22,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-13 19:42:22,302 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:42:22,303 INFO L380 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] [2019-10-13 19:42:22,303 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:42:22,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:42:22,303 INFO L82 PathProgramCache]: Analyzing trace with hash -742421187, now seen corresponding path program 1 times [2019-10-13 19:42:22,303 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:42:22,304 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842665888] [2019-10-13 19:42:22,304 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:22,304 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:22,304 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:42:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:22,572 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:42:22,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:22,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:22,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:22,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:22,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:22,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:22,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:22,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:22,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:22,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:22,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:42:22,725 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842665888] [2019-10-13 19:42:22,726 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:42:22,726 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:42:22,726 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341143208] [2019-10-13 19:42:22,728 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:42:22,728 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:42:22,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:42:22,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:42:22,729 INFO L87 Difference]: Start difference. First operand 413 states and 499 transitions. Second operand 9 states. [2019-10-13 19:42:24,169 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:24,432 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2019-10-13 19:42:24,731 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:25,002 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:25,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:42:25,743 INFO L93 Difference]: Finished difference Result 884 states and 1127 transitions. [2019-10-13 19:42:25,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:42:25,743 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2019-10-13 19:42:25,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:42:25,750 INFO L225 Difference]: With dead ends: 884 [2019-10-13 19:42:25,750 INFO L226 Difference]: Without dead ends: 499 [2019-10-13 19:42:25,752 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:42:25,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2019-10-13 19:42:25,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 426. [2019-10-13 19:42:25,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2019-10-13 19:42:25,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 513 transitions. [2019-10-13 19:42:25,848 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 513 transitions. Word has length 92 [2019-10-13 19:42:25,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:42:25,849 INFO L462 AbstractCegarLoop]: Abstraction has 426 states and 513 transitions. [2019-10-13 19:42:25,849 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:42:25,849 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 513 transitions. [2019-10-13 19:42:25,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-13 19:42:25,851 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:42:25,851 INFO L380 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] [2019-10-13 19:42:25,851 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:42:25,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:42:25,852 INFO L82 PathProgramCache]: Analyzing trace with hash -40821313, now seen corresponding path program 1 times [2019-10-13 19:42:25,852 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:42:25,852 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638668656] [2019-10-13 19:42:25,853 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:25,853 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:25,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:42:25,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:26,144 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:42:26,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:26,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:26,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:26,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:26,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:26,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:26,259 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:42:26,259 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638668656] [2019-10-13 19:42:26,259 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:42:26,259 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 19:42:26,260 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177844627] [2019-10-13 19:42:26,260 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 19:42:26,260 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:42:26,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 19:42:26,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:42:26,261 INFO L87 Difference]: Start difference. First operand 426 states and 513 transitions. Second operand 11 states. [2019-10-13 19:42:26,755 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:27,072 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:27,325 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:28,177 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:28,471 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:28,754 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:29,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:42:29,646 INFO L93 Difference]: Finished difference Result 911 states and 1176 transitions. [2019-10-13 19:42:29,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 19:42:29,646 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 92 [2019-10-13 19:42:29,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:42:29,651 INFO L225 Difference]: With dead ends: 911 [2019-10-13 19:42:29,651 INFO L226 Difference]: Without dead ends: 513 [2019-10-13 19:42:29,653 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:42:29,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2019-10-13 19:42:29,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 434. [2019-10-13 19:42:29,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2019-10-13 19:42:29,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 521 transitions. [2019-10-13 19:42:29,736 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 521 transitions. Word has length 92 [2019-10-13 19:42:29,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:42:29,736 INFO L462 AbstractCegarLoop]: Abstraction has 434 states and 521 transitions. [2019-10-13 19:42:29,737 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 19:42:29,737 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 521 transitions. [2019-10-13 19:42:29,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-13 19:42:29,738 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:42:29,739 INFO L380 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] [2019-10-13 19:42:29,739 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:42:29,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:42:29,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1684659584, now seen corresponding path program 1 times [2019-10-13 19:42:29,740 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:42:29,740 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512463885] [2019-10-13 19:42:29,740 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:29,740 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:29,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:42:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:30,022 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:42:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:30,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:30,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:30,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:30,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:30,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:30,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:30,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:30,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:30,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:42:30,140 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512463885] [2019-10-13 19:42:30,140 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:42:30,140 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 19:42:30,141 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771618580] [2019-10-13 19:42:30,141 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:42:30,141 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:42:30,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:42:30,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:42:30,142 INFO L87 Difference]: Start difference. First operand 434 states and 521 transitions. Second operand 7 states. [2019-10-13 19:42:30,508 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:42:31,084 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:42:33,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:42:33,098 INFO L93 Difference]: Finished difference Result 1379 states and 1792 transitions. [2019-10-13 19:42:33,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 19:42:33,098 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2019-10-13 19:42:33,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:42:33,107 INFO L225 Difference]: With dead ends: 1379 [2019-10-13 19:42:33,107 INFO L226 Difference]: Without dead ends: 973 [2019-10-13 19:42:33,109 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:42:33,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2019-10-13 19:42:33,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 899. [2019-10-13 19:42:33,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2019-10-13 19:42:33,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1095 transitions. [2019-10-13 19:42:33,255 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1095 transitions. Word has length 92 [2019-10-13 19:42:33,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:42:33,256 INFO L462 AbstractCegarLoop]: Abstraction has 899 states and 1095 transitions. [2019-10-13 19:42:33,256 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:42:33,256 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1095 transitions. [2019-10-13 19:42:33,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-13 19:42:33,260 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:42:33,260 INFO L380 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] [2019-10-13 19:42:33,261 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:42:33,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:42:33,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1838654426, now seen corresponding path program 1 times [2019-10-13 19:42:33,261 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:42:33,262 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149223164] [2019-10-13 19:42:33,262 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:33,262 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:33,262 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:42:33,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:33,588 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:42:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:33,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:33,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:33,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:33,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:33,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:33,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:33,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:33,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:33,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:33,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:33,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:33,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:33,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:42:33,748 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149223164] [2019-10-13 19:42:33,748 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:42:33,748 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:42:33,749 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994811944] [2019-10-13 19:42:33,749 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:42:33,749 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:42:33,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:42:33,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:42:33,751 INFO L87 Difference]: Start difference. First operand 899 states and 1095 transitions. Second operand 12 states. [2019-10-13 19:42:34,478 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:42:35,191 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:42:35,912 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:42:36,258 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:42:36,536 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2019-10-13 19:42:36,833 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:42:37,135 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:42:39,138 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:42:39,431 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:39,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:42:39,968 INFO L93 Difference]: Finished difference Result 2547 states and 3312 transitions. [2019-10-13 19:42:39,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-10-13 19:42:39,969 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2019-10-13 19:42:39,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:42:39,980 INFO L225 Difference]: With dead ends: 2547 [2019-10-13 19:42:39,980 INFO L226 Difference]: Without dead ends: 1864 [2019-10-13 19:42:39,984 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2019-10-13 19:42:39,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2019-10-13 19:42:40,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1570. [2019-10-13 19:42:40,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2019-10-13 19:42:40,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 1900 transitions. [2019-10-13 19:42:40,187 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 1900 transitions. Word has length 96 [2019-10-13 19:42:40,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:42:40,187 INFO L462 AbstractCegarLoop]: Abstraction has 1570 states and 1900 transitions. [2019-10-13 19:42:40,187 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:42:40,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 1900 transitions. [2019-10-13 19:42:40,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-13 19:42:40,191 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:42:40,191 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:42:40,192 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:42:40,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:42:40,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1624055928, now seen corresponding path program 1 times [2019-10-13 19:42:40,192 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:42:40,192 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881361653] [2019-10-13 19:42:40,193 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:40,193 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:40,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:42:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:40,498 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:42:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:40,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:40,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:40,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:40,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:40,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:40,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:40,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:40,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:40,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:40,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:40,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:40,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:40,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:40,734 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 19:42:40,735 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881361653] [2019-10-13 19:42:40,735 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68029068] [2019-10-13 19:42:40,735 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 [2019-10-13 19:42:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:40,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 928 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 19:42:40,952 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:42:41,123 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 27 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:42:41,124 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:42:41,124 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7] total 20 [2019-10-13 19:42:41,124 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420874000] [2019-10-13 19:42:41,125 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-13 19:42:41,125 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:42:41,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-13 19:42:41,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2019-10-13 19:42:41,126 INFO L87 Difference]: Start difference. First operand 1570 states and 1900 transitions. Second operand 20 states. [2019-10-13 19:42:41,660 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2019-10-13 19:42:42,024 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2019-10-13 19:42:42,282 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2019-10-13 19:42:42,532 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2019-10-13 19:42:43,297 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:42:43,689 WARN L191 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:42:44,136 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-13 19:42:44,426 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 194