/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:09:28,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:09:28,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:09:29,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 18:09:29,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 18:09:29,016 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 18:09:29,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 18:09:29,023 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 18:09:29,026 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 18:09:29,028 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 18:09:29,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 18:09:29,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 18:09:29,030 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:09:29,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:09:29,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:09:29,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:09:29,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:09:29,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:09:29,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:09:29,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:09:29,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:09:29,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:09:29,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:09:29,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:09:29,063 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 18:09:29,063 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 18:09:29,063 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 18:09:29,067 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 18:09:29,067 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 18:09:29,068 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 18:09:29,068 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 18:09:29,071 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 18:09:29,072 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 18:09:29,073 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 18:09:29,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 18:09:29,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 18:09:29,074 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 18:09:29,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 18:09:29,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 18:09:29,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 18:09:29,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 18:09:29,078 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 18:09:29,092 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:09:29,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:09:29,094 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:09:29,094 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:09:29,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:09:29,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:09:29,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:09:29,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:09:29,095 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:09:29,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:09:29,096 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:09:29,096 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:09:29,096 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:09:29,096 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:09:29,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:09:29,097 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:09:29,097 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:09:29,097 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:09:29,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:09:29,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:09:29,098 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:09:29,098 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:09:29,098 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:09:29,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:09:29,422 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:09:29,429 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:09:29,430 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:09:29,431 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:09:29,432 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product37.cil.c [2020-08-22 18:09:29,505 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fdca1dda/089f496b1bae4a06bbc1846e4c3ae9a9/FLAGa4b068e03 [2020-08-22 18:09:30,014 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:09:30,015 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product37.cil.c [2020-08-22 18:09:30,039 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fdca1dda/089f496b1bae4a06bbc1846e4c3ae9a9/FLAGa4b068e03 [2020-08-22 18:09:30,327 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fdca1dda/089f496b1bae4a06bbc1846e4c3ae9a9 [2020-08-22 18:09:30,336 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:09:30,338 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:09:30,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:09:30,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:09:30,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:09:30,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:09:30" (1/1) ... [2020-08-22 18:09:30,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76049601 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:30, skipping insertion in model container [2020-08-22 18:09:30,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:09:30" (1/1) ... [2020-08-22 18:09:30,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:09:30,396 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:09:30,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:09:30,879 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:09:30,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:09:30,996 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:09:30,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:30 WrapperNode [2020-08-22 18:09:30,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:09:30,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:09:30,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:09:30,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:09:31,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:30" (1/1) ... [2020-08-22 18:09:31,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:30" (1/1) ... [2020-08-22 18:09:31,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:30" (1/1) ... [2020-08-22 18:09:31,028 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:30" (1/1) ... [2020-08-22 18:09:31,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:30" (1/1) ... [2020-08-22 18:09:31,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:30" (1/1) ... [2020-08-22 18:09:31,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:30" (1/1) ... [2020-08-22 18:09:31,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:09:31,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:09:31,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:09:31,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:09:31,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:30" (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 [2020-08-22 18:09:31,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:09:31,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:09:31,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 18:09:31,169 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 18:09:31,169 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 18:09:31,169 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 18:09:31,169 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 18:09:31,170 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 18:09:31,170 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 18:09:31,170 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 18:09:31,170 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 18:09:31,171 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 18:09:31,171 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 18:09:31,172 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 18:09:31,172 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 18:09:31,172 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 18:09:31,172 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 18:09:31,172 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 18:09:31,173 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 18:09:31,173 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 18:09:31,174 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 18:09:31,174 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 18:09:31,176 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:09:31,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 18:09:31,177 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 18:09:31,177 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 18:09:31,177 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 18:09:31,177 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 18:09:31,177 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 18:09:31,177 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 18:09:31,178 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 18:09:31,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 18:09:31,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 18:09:31,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 18:09:31,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 18:09:31,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 18:09:31,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 18:09:31,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-22 18:09:31,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:09:31,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 18:09:31,179 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 18:09:31,179 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 18:09:31,179 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 18:09:31,179 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 18:09:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 18:09:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 18:09:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 18:09:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 18:09:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 18:09:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 18:09:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 18:09:31,181 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 18:09:31,181 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 18:09:31,181 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 18:09:31,181 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 18:09:31,182 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 18:09:31,182 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 18:09:31,182 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 18:09:31,182 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-22 18:09:31,182 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 18:09:31,182 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 18:09:31,182 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 18:09:31,183 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 18:09:31,183 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 18:09:31,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 18:09:31,183 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 18:09:31,183 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 18:09:31,183 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 18:09:31,183 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:09:31,184 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 18:09:31,184 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 18:09:31,184 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 18:09:31,184 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 18:09:31,184 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 18:09:31,184 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 18:09:31,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 18:09:31,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 18:09:31,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 18:09:31,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 18:09:31,185 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 18:09:31,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 18:09:31,186 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 18:09:31,186 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 18:09:31,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 18:09:31,187 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 18:09:31,187 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 18:09:31,187 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 18:09:31,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:09:31,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 18:09:31,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:09:32,253 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:09:32,255 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 18:09:32,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:09:32 BoogieIcfgContainer [2020-08-22 18:09:32,265 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:09:32,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:09:32,267 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:09:32,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:09:32,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:09:30" (1/3) ... [2020-08-22 18:09:32,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d7dc77e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:09:32, skipping insertion in model container [2020-08-22 18:09:32,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:30" (2/3) ... [2020-08-22 18:09:32,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d7dc77e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:09:32, skipping insertion in model container [2020-08-22 18:09:32,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:09:32" (3/3) ... [2020-08-22 18:09:32,274 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product37.cil.c [2020-08-22 18:09:32,285 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:09:32,293 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:09:32,308 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:09:32,332 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:09:32,333 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:09:32,333 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:09:32,333 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:09:32,333 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:09:32,334 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:09:32,334 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:09:32,334 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:09:32,360 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states. [2020-08-22 18:09:32,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-22 18:09:32,402 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:09:32,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:09:32,405 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:09:32,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:09:32,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1997357688, now seen corresponding path program 1 times [2020-08-22 18:09:32,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:09:32,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544379143] [2020-08-22 18:09:32,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:09:32,502 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:09:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:33,137 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:09:33,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:09:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:33,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:09:33,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:33,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:09:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:33,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:09:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:33,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:09:33,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:33,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 18:09:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:33,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-22 18:09:33,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:33,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:09:33,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544379143] [2020-08-22 18:09:33,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:09:33,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:09:33,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813559170] [2020-08-22 18:09:33,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:09:33,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:09:33,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:09:33,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:09:33,316 INFO L87 Difference]: Start difference. First operand 306 states. Second operand 3 states. [2020-08-22 18:09:34,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:09:34,568 INFO L93 Difference]: Finished difference Result 477 states and 566 transitions. [2020-08-22 18:09:34,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:09:34,570 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-08-22 18:09:34,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:09:34,587 INFO L225 Difference]: With dead ends: 477 [2020-08-22 18:09:34,588 INFO L226 Difference]: Without dead ends: 296 [2020-08-22 18:09:34,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:09:34,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-08-22 18:09:34,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 255. [2020-08-22 18:09:34,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-08-22 18:09:34,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 276 transitions. [2020-08-22 18:09:34,729 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 276 transitions. Word has length 142 [2020-08-22 18:09:34,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:09:34,731 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 276 transitions. [2020-08-22 18:09:34,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:09:34,731 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 276 transitions. [2020-08-22 18:09:34,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-22 18:09:34,735 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:09:34,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:09:34,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:09:34,736 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:09:34,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:09:34,736 INFO L82 PathProgramCache]: Analyzing trace with hash -233302428, now seen corresponding path program 1 times [2020-08-22 18:09:34,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:09:34,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535285112] [2020-08-22 18:09:34,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:09:34,740 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:09:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:35,128 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:09:35,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:09:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:35,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:09:35,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:35,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:09:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:35,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:09:35,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:35,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:09:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:35,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 18:09:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:35,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 18:09:35,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:35,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:09:35,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [535285112] [2020-08-22 18:09:35,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:09:35,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:09:35,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073490971] [2020-08-22 18:09:35,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:09:35,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:09:35,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:09:35,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:09:35,212 INFO L87 Difference]: Start difference. First operand 255 states and 276 transitions. Second operand 4 states. [2020-08-22 18:09:35,784 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:09:36,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:09:36,685 INFO L93 Difference]: Finished difference Result 394 states and 441 transitions. [2020-08-22 18:09:36,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 18:09:36,685 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-08-22 18:09:36,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:09:36,691 INFO L225 Difference]: With dead ends: 394 [2020-08-22 18:09:36,691 INFO L226 Difference]: Without dead ends: 279 [2020-08-22 18:09:36,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:09:36,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-08-22 18:09:36,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 245. [2020-08-22 18:09:36,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-08-22 18:09:36,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 263 transitions. [2020-08-22 18:09:36,776 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 263 transitions. Word has length 143 [2020-08-22 18:09:36,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:09:36,777 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 263 transitions. [2020-08-22 18:09:36,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:09:36,777 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 263 transitions. [2020-08-22 18:09:36,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 18:09:36,779 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:09:36,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:09:36,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:09:36,780 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:09:36,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:09:36,781 INFO L82 PathProgramCache]: Analyzing trace with hash -577490639, now seen corresponding path program 1 times [2020-08-22 18:09:36,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:09:36,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802392267] [2020-08-22 18:09:36,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:09:36,784 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:09:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:37,093 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:09:37,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:09:37,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:37,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:09:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:37,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:09:37,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:37,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:09:37,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:37,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:09:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:37,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-22 18:09:37,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:37,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-22 18:09:37,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:37,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:09:37,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802392267] [2020-08-22 18:09:37,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:09:37,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 18:09:37,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067074897] [2020-08-22 18:09:37,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 18:09:37,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:09:37,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 18:09:37,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 18:09:37,233 INFO L87 Difference]: Start difference. First operand 245 states and 263 transitions. Second operand 9 states. [2020-08-22 18:09:37,816 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:09:38,110 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:09:38,352 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:09:38,630 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:09:38,856 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:09:39,094 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:09:40,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:09:40,470 INFO L93 Difference]: Finished difference Result 414 states and 466 transitions. [2020-08-22 18:09:40,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 18:09:40,471 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 152 [2020-08-22 18:09:40,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:09:40,475 INFO L225 Difference]: With dead ends: 414 [2020-08-22 18:09:40,476 INFO L226 Difference]: Without dead ends: 279 [2020-08-22 18:09:40,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-08-22 18:09:40,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-08-22 18:09:40,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 245. [2020-08-22 18:09:40,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-08-22 18:09:40,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 262 transitions. [2020-08-22 18:09:40,552 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 262 transitions. Word has length 152 [2020-08-22 18:09:40,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:09:40,553 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 262 transitions. [2020-08-22 18:09:40,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 18:09:40,554 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 262 transitions. [2020-08-22 18:09:40,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-08-22 18:09:40,556 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:09:40,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:09:40,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 18:09:40,557 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:09:40,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:09:40,557 INFO L82 PathProgramCache]: Analyzing trace with hash 525505504, now seen corresponding path program 1 times [2020-08-22 18:09:40,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:09:40,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248850561] [2020-08-22 18:09:40,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:09:40,560 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:09:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:40,890 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:09:40,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:09:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:40,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:09:40,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:40,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:09:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:40,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:09:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:40,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:09:40,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:40,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-22 18:09:40,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:40,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:09:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:41,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:09:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:41,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-22 18:09:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:41,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 18:09:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:41,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:09:41,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248850561] [2020-08-22 18:09:41,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:09:41,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 18:09:41,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156068438] [2020-08-22 18:09:41,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 18:09:41,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:09:41,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 18:09:41,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 18:09:41,076 INFO L87 Difference]: Start difference. First operand 245 states and 262 transitions. Second operand 6 states. [2020-08-22 18:09:41,536 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:09:43,249 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:09:43,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:09:43,894 INFO L93 Difference]: Finished difference Result 545 states and 621 transitions. [2020-08-22 18:09:43,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 18:09:43,895 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2020-08-22 18:09:43,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:09:43,899 INFO L225 Difference]: With dead ends: 545 [2020-08-22 18:09:43,900 INFO L226 Difference]: Without dead ends: 410 [2020-08-22 18:09:43,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-22 18:09:43,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-08-22 18:09:44,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 351. [2020-08-22 18:09:44,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-08-22 18:09:44,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 377 transitions. [2020-08-22 18:09:44,051 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 377 transitions. Word has length 165 [2020-08-22 18:09:44,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:09:44,053 INFO L479 AbstractCegarLoop]: Abstraction has 351 states and 377 transitions. [2020-08-22 18:09:44,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 18:09:44,053 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 377 transitions. [2020-08-22 18:09:44,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-08-22 18:09:44,055 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:09:44,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:09:44,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 18:09:44,056 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:09:44,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:09:44,057 INFO L82 PathProgramCache]: Analyzing trace with hash -764606084, now seen corresponding path program 1 times [2020-08-22 18:09:44,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:09:44,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184691993] [2020-08-22 18:09:44,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:09:44,060 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:09:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:44,424 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:09:44,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:09:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:44,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:09:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:44,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:09:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:44,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:09:44,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:44,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:09:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:44,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-22 18:09:44,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:44,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:09:44,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:44,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:09:44,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:44,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:09:44,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:44,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 18:09:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:44,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 18:09:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:44,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-22 18:09:44,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:44,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:09:44,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184691993] [2020-08-22 18:09:44,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:09:44,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 18:09:44,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094375064] [2020-08-22 18:09:44,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 18:09:44,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:09:44,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 18:09:44,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-08-22 18:09:44,666 INFO L87 Difference]: Start difference. First operand 351 states and 377 transitions. Second operand 14 states. [2020-08-22 18:09:45,198 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:09:45,519 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:09:45,754 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:09:45,997 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:09:46,247 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:09:46,471 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:09:47,085 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:09:48,240 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:09:48,477 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:09:48,720 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:09:48,956 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:09:49,193 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 18:09:49,417 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:09:49,641 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:09:49,919 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:09:50,175 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 18:09:50,427 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:09:51,902 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:09:52,127 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:09:52,448 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:09:53,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:09:53,105 INFO L93 Difference]: Finished difference Result 1040 states and 1239 transitions. [2020-08-22 18:09:53,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-22 18:09:53,106 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 189 [2020-08-22 18:09:53,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:09:53,112 INFO L225 Difference]: With dead ends: 1040 [2020-08-22 18:09:53,112 INFO L226 Difference]: Without dead ends: 799 [2020-08-22 18:09:53,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2020-08-22 18:09:53,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2020-08-22 18:09:53,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 702. [2020-08-22 18:09:53,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-22 18:09:53,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 781 transitions. [2020-08-22 18:09:53,386 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 781 transitions. Word has length 189 [2020-08-22 18:09:53,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:09:53,387 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 781 transitions. [2020-08-22 18:09:53,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 18:09:53,387 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 781 transitions. [2020-08-22 18:09:53,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-08-22 18:09:53,410 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:09:53,410 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:09:53,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 18:09:53,411 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:09:53,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:09:53,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1870991617, now seen corresponding path program 1 times [2020-08-22 18:09:53,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:09:53,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876407311] [2020-08-22 18:09:53,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:09:53,443 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:09:53,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:53,720 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:09:53,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:09:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:53,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:09:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:53,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:09:53,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:53,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:09:53,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:53,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:09:53,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:53,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 18:09:53,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:53,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 18:09:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:53,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:09:53,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:53,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:09:53,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:53,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:09:53,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:53,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:09:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:53,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 18:09:53,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:53,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 18:09:53,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:53,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:09:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:53,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-08-22 18:09:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:53,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-22 18:09:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:53,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-08-22 18:09:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:53,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:09:53,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:53,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 18:09:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:53,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 18:09:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:53,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-22 18:09:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:53,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-22 18:09:53,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:54,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:09:54,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876407311] [2020-08-22 18:09:54,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:09:54,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 18:09:54,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489415364] [2020-08-22 18:09:54,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 18:09:54,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:09:54,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 18:09:54,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-08-22 18:09:54,100 INFO L87 Difference]: Start difference. First operand 702 states and 781 transitions. Second operand 14 states. [2020-08-22 18:09:54,561 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:09:55,378 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:09:56,092 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:09:56,340 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 18:09:56,599 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 18:09:56,863 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:09:57,109 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:09:57,370 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 18:09:57,606 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:09:57,861 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 18:09:58,107 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:09:58,367 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:09:58,654 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:09:58,904 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:00,822 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:01,048 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:10:01,293 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 18:10:01,525 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:10:01,755 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:01,981 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:10:02,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:10:02,547 INFO L93 Difference]: Finished difference Result 1370 states and 1617 transitions. [2020-08-22 18:10:02,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-08-22 18:10:02,548 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 265 [2020-08-22 18:10:02,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:10:02,553 INFO L225 Difference]: With dead ends: 1370 [2020-08-22 18:10:02,553 INFO L226 Difference]: Without dead ends: 778 [2020-08-22 18:10:02,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=308, Invalid=1332, Unknown=0, NotChecked=0, Total=1640 [2020-08-22 18:10:02,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2020-08-22 18:10:02,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 669. [2020-08-22 18:10:02,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 669 states. [2020-08-22 18:10:02,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 747 transitions. [2020-08-22 18:10:02,812 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 747 transitions. Word has length 265 [2020-08-22 18:10:02,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:10:02,812 INFO L479 AbstractCegarLoop]: Abstraction has 669 states and 747 transitions. [2020-08-22 18:10:02,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 18:10:02,812 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 747 transitions. [2020-08-22 18:10:02,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-08-22 18:10:02,817 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:10:02,817 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:10:02,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 18:10:02,818 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:10:02,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:10:02,818 INFO L82 PathProgramCache]: Analyzing trace with hash 815875063, now seen corresponding path program 1 times [2020-08-22 18:10:02,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:10:02,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914982851] [2020-08-22 18:10:02,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:10:02,829 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:10:02,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:03,098 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:10:03,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:10:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:03,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:10:03,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:03,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:10:03,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:03,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:10:03,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:03,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:10:03,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:03,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 18:10:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:03,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:03,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:03,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:03,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:03,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:10:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:03,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 18:10:03,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:03,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 18:10:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:03,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:03,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-08-22 18:10:03,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:03,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-08-22 18:10:03,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:03,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:03,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 18:10:03,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:03,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 18:10:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:03,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-08-22 18:10:03,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:03,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-08-22 18:10:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:03,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:10:03,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914982851] [2020-08-22 18:10:03,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:10:03,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 18:10:03,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342748345] [2020-08-22 18:10:03,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 18:10:03,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:10:03,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 18:10:03,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-08-22 18:10:03,369 INFO L87 Difference]: Start difference. First operand 669 states and 747 transitions. Second operand 14 states. [2020-08-22 18:10:03,901 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:04,129 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:10:04,359 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:10:04,589 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:04,832 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:10:05,578 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:10:05,802 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:06,036 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:10:06,283 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:06,519 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:10:07,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:10:07,816 INFO L93 Difference]: Finished difference Result 1161 states and 1335 transitions. [2020-08-22 18:10:07,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 18:10:07,817 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 256 [2020-08-22 18:10:07,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:10:07,821 INFO L225 Difference]: With dead ends: 1161 [2020-08-22 18:10:07,822 INFO L226 Difference]: Without dead ends: 602 [2020-08-22 18:10:07,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-08-22 18:10:07,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-08-22 18:10:08,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 560. [2020-08-22 18:10:08,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-08-22 18:10:08,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 621 transitions. [2020-08-22 18:10:08,005 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 621 transitions. Word has length 256 [2020-08-22 18:10:08,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:10:08,005 INFO L479 AbstractCegarLoop]: Abstraction has 560 states and 621 transitions. [2020-08-22 18:10:08,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 18:10:08,006 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 621 transitions. [2020-08-22 18:10:08,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-08-22 18:10:08,010 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:10:08,010 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:10:08,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 18:10:08,011 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:10:08,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:10:08,011 INFO L82 PathProgramCache]: Analyzing trace with hash -759668045, now seen corresponding path program 1 times [2020-08-22 18:10:08,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:10:08,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044734344] [2020-08-22 18:10:08,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:10:08,024 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:10:08,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:08,302 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:10:08,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:10:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:08,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:10:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:08,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:10:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:08,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:10:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:08,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:10:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:08,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 18:10:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:08,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 18:10:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:08,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:08,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:08,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:08,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:08,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:10:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:08,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 18:10:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:08,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 18:10:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:08,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:08,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-08-22 18:10:08,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:08,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 18:10:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:08,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:08,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 18:10:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:08,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 18:10:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:08,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-22 18:10:08,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:08,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-22 18:10:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:08,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:10:08,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044734344] [2020-08-22 18:10:08,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:10:08,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-22 18:10:08,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307003325] [2020-08-22 18:10:08,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 18:10:08,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:10:08,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 18:10:08,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-08-22 18:10:08,579 INFO L87 Difference]: Start difference. First operand 560 states and 621 transitions. Second operand 15 states. [2020-08-22 18:10:08,983 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:10:09,830 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:10:11,779 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:12,014 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:10:12,283 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:12,517 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:12,747 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:10:12,983 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:10:13,207 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:13,441 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:10:13,674 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:13,921 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:14,149 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:10:14,384 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:14,615 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:10:14,843 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:10:15,099 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:15,347 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:15,592 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:10:15,824 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:16,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:10:16,497 INFO L93 Difference]: Finished difference Result 1441 states and 1655 transitions. [2020-08-22 18:10:16,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-22 18:10:16,498 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 261 [2020-08-22 18:10:16,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:10:16,504 INFO L225 Difference]: With dead ends: 1441 [2020-08-22 18:10:16,505 INFO L226 Difference]: Without dead ends: 991 [2020-08-22 18:10:16,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=328, Invalid=1394, Unknown=0, NotChecked=0, Total=1722 [2020-08-22 18:10:16,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2020-08-22 18:10:16,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 925. [2020-08-22 18:10:16,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 925 states. [2020-08-22 18:10:16,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1023 transitions. [2020-08-22 18:10:16,758 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1023 transitions. Word has length 261 [2020-08-22 18:10:16,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:10:16,759 INFO L479 AbstractCegarLoop]: Abstraction has 925 states and 1023 transitions. [2020-08-22 18:10:16,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 18:10:16,759 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1023 transitions. [2020-08-22 18:10:16,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-08-22 18:10:16,762 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:10:16,762 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:10:16,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 18:10:16,763 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:10:16,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:10:16,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1409019518, now seen corresponding path program 1 times [2020-08-22 18:10:16,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:10:16,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596782531] [2020-08-22 18:10:16,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:10:16,780 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:10:16,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:17,175 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:10:17,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:10:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:17,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:10:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:17,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:10:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:17,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:10:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:17,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:10:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:17,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 18:10:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:17,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 18:10:17,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:17,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:17,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:17,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:17,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:17,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:10:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:17,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 18:10:17,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:17,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 18:10:17,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:17,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:17,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:17,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-08-22 18:10:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:17,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 18:10:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:17,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:17,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 18:10:17,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:17,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 18:10:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:17,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:17,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-22 18:10:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:17,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-22 18:10:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:17,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:10:17,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596782531] [2020-08-22 18:10:17,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:10:17,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-22 18:10:17,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865794280] [2020-08-22 18:10:17,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 18:10:17,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:10:17,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 18:10:17,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-22 18:10:17,492 INFO L87 Difference]: Start difference. First operand 925 states and 1023 transitions. Second operand 13 states. [2020-08-22 18:10:18,014 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:10:18,640 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:10:19,616 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:19,854 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:10:20,114 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:20,346 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:20,569 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:10:20,793 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:10:21,014 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:21,251 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:21,510 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:10:21,738 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:23,126 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:10:23,339 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:24,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:10:24,264 INFO L93 Difference]: Finished difference Result 2116 states and 2492 transitions. [2020-08-22 18:10:24,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-22 18:10:24,266 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 265 [2020-08-22 18:10:24,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:10:24,275 INFO L225 Difference]: With dead ends: 2116 [2020-08-22 18:10:24,275 INFO L226 Difference]: Without dead ends: 1471 [2020-08-22 18:10:24,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 51 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=363, Invalid=897, Unknown=0, NotChecked=0, Total=1260 [2020-08-22 18:10:24,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1471 states. [2020-08-22 18:10:24,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1471 to 1225. [2020-08-22 18:10:24,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1225 states. [2020-08-22 18:10:24,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1372 transitions. [2020-08-22 18:10:24,870 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1372 transitions. Word has length 265 [2020-08-22 18:10:24,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:10:24,870 INFO L479 AbstractCegarLoop]: Abstraction has 1225 states and 1372 transitions. [2020-08-22 18:10:24,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 18:10:24,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1372 transitions. [2020-08-22 18:10:24,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-08-22 18:10:24,876 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:10:24,876 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:10:24,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 18:10:24,877 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:10:24,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:10:24,877 INFO L82 PathProgramCache]: Analyzing trace with hash -502964723, now seen corresponding path program 2 times [2020-08-22 18:10:24,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:10:24,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131450845] [2020-08-22 18:10:24,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:10:24,890 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:10:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:10:24,966 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:10:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:10:25,035 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:10:25,517 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 18:10:25,517 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 18:10:25,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 18:10:25,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:10:25 BoogieIcfgContainer [2020-08-22 18:10:25,563 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:10:25,565 INFO L168 Benchmark]: Toolchain (without parser) took 55227.37 ms. Allocated memory was 139.5 MB in the beginning and 933.2 MB in the end (delta: 793.8 MB). Free memory was 103.2 MB in the beginning and 683.7 MB in the end (delta: -580.5 MB). Peak memory consumption was 213.3 MB. Max. memory is 7.1 GB. [2020-08-22 18:10:25,565 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 18:10:25,566 INFO L168 Benchmark]: CACSL2BoogieTranslator took 657.95 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 103.0 MB in the beginning and 172.9 MB in the end (delta: -69.9 MB). Peak memory consumption was 28.9 MB. Max. memory is 7.1 GB. [2020-08-22 18:10:25,567 INFO L168 Benchmark]: Boogie Preprocessor took 94.10 ms. Allocated memory is still 203.4 MB. Free memory was 172.9 MB in the beginning and 168.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-22 18:10:25,568 INFO L168 Benchmark]: RCFGBuilder took 1173.88 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 168.7 MB in the beginning and 179.9 MB in the end (delta: -11.2 MB). Peak memory consumption was 84.2 MB. Max. memory is 7.1 GB. [2020-08-22 18:10:25,568 INFO L168 Benchmark]: TraceAbstraction took 53296.58 ms. Allocated memory was 237.0 MB in the beginning and 933.2 MB in the end (delta: 696.3 MB). Free memory was 178.4 MB in the beginning and 683.7 MB in the end (delta: -505.3 MB). Peak memory consumption was 191.0 MB. Max. memory is 7.1 GB. [2020-08-22 18:10:25,571 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 657.95 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 103.0 MB in the beginning and 172.9 MB in the end (delta: -69.9 MB). Peak memory consumption was 28.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.10 ms. Allocated memory is still 203.4 MB. Free memory was 172.9 MB in the beginning and 168.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1173.88 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 168.7 MB in the beginning and 179.9 MB in the end (delta: -11.2 MB). Peak memory consumption was 84.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 53296.58 ms. Allocated memory was 237.0 MB in the beginning and 933.2 MB in the end (delta: 696.3 MB). Free memory was 178.4 MB in the beginning and 683.7 MB in the end (delta: -505.3 MB). Peak memory consumption was 191.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 434]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L155] int pumpRunning = 0; [L156] int systemActive = 1; [L334] int cleanupTimeShifts = 4; [L440] int waterLevel = 1; [L441] int methaneLevelCritical = 0; [L703] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L407] int retValue_acc ; [L408] int tmp ; [L412] FCALL select_helpers() [L413] FCALL select_features() [L414] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L414] RET, EXPR valid_product() [L414] tmp = valid_product() [L416] COND TRUE \read(tmp) [L418] FCALL setup() [L419] CALL runTest() [L401] CALL test() [L83] int splverifierCounter ; [L84] int tmp ; [L85] int tmp___0 ; [L86] int tmp___1 ; [L87] int tmp___2 ; [L90] splverifierCounter = 0 [L92] COND TRUE 1 [L94] COND TRUE splverifierCounter < 4 [L100] tmp = __VERIFIER_nondet_int() [L102] COND TRUE \read(tmp) [L104] CALL waterRise() [L458] COND TRUE waterLevel < 2 [L459] waterLevel = waterLevel + 1 [L104] RET waterRise() [L110] tmp___0 = __VERIFIER_nondet_int() [L112] COND FALSE !(\read(tmp___0)) [L120] tmp___2 = __VERIFIER_nondet_int() [L122] COND TRUE \read(tmp___2) [L135] CALL timeShift() [L163] COND FALSE !(\read(pumpRunning)) [L170] COND TRUE \read(systemActive) [L172] CALL processEnvironment() [L218] int tmp ; [L221] COND FALSE !(\read(pumpRunning)) [L236] CALL processEnvironment__wrappee__highWaterSensor() [L192] int tmp ; [L195] COND TRUE ! pumpRunning [L197] CALL, EXPR isHighWaterLevel() [L315] int retValue_acc ; [L316] int tmp ; [L317] int tmp___0 ; [L321] CALL, EXPR isHighWaterSensorDry() [L520] int retValue_acc ; [L523] COND FALSE !(waterLevel < 2) [L527] retValue_acc = 0 [L528] return (retValue_acc); [L321] RET, EXPR isHighWaterSensorDry() [L321] tmp = isHighWaterSensorDry() [L323] COND FALSE !(\read(tmp)) [L326] tmp___0 = 1 [L328] retValue_acc = tmp___0 [L329] return (retValue_acc); [L197] RET, EXPR isHighWaterLevel() [L197] tmp = isHighWaterLevel() [L199] COND TRUE \read(tmp) [L201] CALL activatePump() [L246] pumpRunning = 1 [L201] RET activatePump() [L236] RET processEnvironment__wrappee__highWaterSensor() [L172] RET processEnvironment() [L178] CALL __utac_acc__Specification4_spec__1() [L901] int tmp ; [L902] int tmp___0 ; [L906] CALL, EXPR getWaterLevel() [L511] int retValue_acc ; [L514] retValue_acc = waterLevel [L515] return (retValue_acc); [L906] RET, EXPR getWaterLevel() [L906] tmp = getWaterLevel() [L908] COND FALSE !(tmp == 0) [L178] RET __utac_acc__Specification4_spec__1() [L135] RET timeShift() [L92] COND TRUE 1 [L94] COND TRUE splverifierCounter < 4 [L100] tmp = __VERIFIER_nondet_int() [L102] COND FALSE !(\read(tmp)) [L110] tmp___0 = __VERIFIER_nondet_int() [L112] COND FALSE !(\read(tmp___0)) [L120] tmp___2 = __VERIFIER_nondet_int() [L122] COND TRUE \read(tmp___2) [L135] CALL timeShift() [L163] COND TRUE \read(pumpRunning) [L165] CALL lowerWaterLevel() [L446] COND TRUE waterLevel > 0 [L447] waterLevel = waterLevel - 1 [L165] RET lowerWaterLevel() [L170] COND TRUE \read(systemActive) [L172] CALL processEnvironment() [L218] int tmp ; [L221] COND TRUE \read(pumpRunning) [L223] CALL, EXPR isMethaneAlarm() [L259] int retValue_acc ; [L263] CALL, EXPR isMethaneLevelCritical() [L479] int retValue_acc ; [L482] retValue_acc = methaneLevelCritical [L483] return (retValue_acc); [L263] RET, EXPR isMethaneLevelCritical() [L263] retValue_acc = isMethaneLevelCritical() [L265] return (retValue_acc); [L223] RET, EXPR isMethaneAlarm() [L223] tmp = isMethaneAlarm() [L225] COND FALSE !(\read(tmp)) [L231] CALL processEnvironment__wrappee__highWaterSensor() [L192] int tmp ; [L195] COND FALSE !(! pumpRunning) [L210] FCALL processEnvironment__wrappee__base() [L231] RET processEnvironment__wrappee__highWaterSensor() [L172] RET processEnvironment() [L178] CALL __utac_acc__Specification4_spec__1() [L901] int tmp ; [L902] int tmp___0 ; [L906] CALL, EXPR getWaterLevel() [L511] int retValue_acc ; [L514] retValue_acc = waterLevel [L515] return (retValue_acc); [L906] RET, EXPR getWaterLevel() [L906] tmp = getWaterLevel() [L908] COND FALSE !(tmp == 0) [L178] RET __utac_acc__Specification4_spec__1() [L135] RET timeShift() [L92] COND TRUE 1 [L94] COND TRUE splverifierCounter < 4 [L100] tmp = __VERIFIER_nondet_int() [L102] COND FALSE !(\read(tmp)) [L110] tmp___0 = __VERIFIER_nondet_int() [L112] COND FALSE !(\read(tmp___0)) [L120] tmp___2 = __VERIFIER_nondet_int() [L122] COND TRUE \read(tmp___2) [L135] CALL timeShift() [L163] COND TRUE \read(pumpRunning) [L165] CALL lowerWaterLevel() [L446] COND TRUE waterLevel > 0 [L447] waterLevel = waterLevel - 1 [L165] RET lowerWaterLevel() [L170] COND TRUE \read(systemActive) [L172] CALL processEnvironment() [L218] int tmp ; [L221] COND TRUE \read(pumpRunning) [L223] CALL, EXPR isMethaneAlarm() [L259] int retValue_acc ; [L263] CALL, EXPR isMethaneLevelCritical() [L479] int retValue_acc ; [L482] retValue_acc = methaneLevelCritical [L483] return (retValue_acc); [L263] RET, EXPR isMethaneLevelCritical() [L263] retValue_acc = isMethaneLevelCritical() [L265] return (retValue_acc); [L223] RET, EXPR isMethaneAlarm() [L223] tmp = isMethaneAlarm() [L225] COND FALSE !(\read(tmp)) [L231] CALL processEnvironment__wrappee__highWaterSensor() [L192] int tmp ; [L195] COND FALSE !(! pumpRunning) [L210] FCALL processEnvironment__wrappee__base() [L231] RET processEnvironment__wrappee__highWaterSensor() [L172] RET processEnvironment() [L178] CALL __utac_acc__Specification4_spec__1() [L901] int tmp ; [L902] int tmp___0 ; [L906] CALL, EXPR getWaterLevel() [L511] int retValue_acc ; [L514] retValue_acc = waterLevel [L515] return (retValue_acc); [L906] RET, EXPR getWaterLevel() [L906] tmp = getWaterLevel() [L908] COND TRUE tmp == 0 [L910] CALL, EXPR isPumpRunning() [L270] int retValue_acc ; [L273] retValue_acc = pumpRunning [L274] return (retValue_acc); [L910] RET, EXPR isPumpRunning() [L910] tmp___0 = isPumpRunning() [L912] COND TRUE \read(tmp___0) [L914] CALL __automaton_fail() [L434] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 618 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 53.1s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 44.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2344 SDtfs, 4735 SDslu, 5890 SDs, 0 SdLazy, 13080 SolverSat, 1548 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 502 GetRequests, 299 SyntacticMatches, 8 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1333 ImplicationChecksByTransitivity, 23.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1225occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 9 MinimizatonAttempts, 728 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...