/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_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 12:38:55,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 12:38:55,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 12:38:55,026 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 12:38:55,027 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 12:38:55,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 12:38:55,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 12:38:55,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 12:38:55,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 12:38:55,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 12:38:55,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 12:38:55,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 12:38:55,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 12:38:55,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 12:38:55,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 12:38:55,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 12:38:55,041 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 12:38:55,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 12:38:55,044 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 12:38:55,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 12:38:55,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 12:38:55,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 12:38:55,050 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 12:38:55,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 12:38:55,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 12:38:55,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 12:38:55,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 12:38:55,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 12:38:55,055 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 12:38:55,056 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 12:38:55,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 12:38:55,057 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 12:38:55,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 12:38:55,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 12:38:55,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 12:38:55,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 12:38:55,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 12:38:55,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 12:38:55,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 12:38:55,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 12:38:55,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 12:38:55,064 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 12:38:55,073 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 12:38:55,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 12:38:55,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 12:38:55,075 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 12:38:55,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 12:38:55,075 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 12:38:55,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 12:38:55,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 12:38:55,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 12:38:55,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 12:38:55,076 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 12:38:55,076 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 12:38:55,076 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 12:38:55,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 12:38:55,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 12:38:55,077 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 12:38:55,077 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 12:38:55,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 12:38:55,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 12:38:55,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 12:38:55,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 12:38:55,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 12:38:55,079 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 12:38:55,378 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 12:38:55,390 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 12:38:55,394 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 12:38:55,396 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 12:38:55,396 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 12:38:55,397 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product41.cil.c [2020-07-07 12:38:55,457 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd4c209a4/0bce203942024f79a3df19c695994919/FLAG50f163419 [2020-07-07 12:38:55,992 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 12:38:55,993 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product41.cil.c [2020-07-07 12:38:56,020 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd4c209a4/0bce203942024f79a3df19c695994919/FLAG50f163419 [2020-07-07 12:38:56,306 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd4c209a4/0bce203942024f79a3df19c695994919 [2020-07-07 12:38:56,314 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 12:38:56,316 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 12:38:56,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 12:38:56,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 12:38:56,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 12:38:56,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 12:38:56" (1/1) ... [2020-07-07 12:38:56,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4059f546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:38:56, skipping insertion in model container [2020-07-07 12:38:56,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 12:38:56" (1/1) ... [2020-07-07 12:38:56,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 12:38:56,377 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 12:38:56,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 12:38:56,811 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 12:38:56,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 12:38:56,948 INFO L208 MainTranslator]: Completed translation [2020-07-07 12:38:56,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:38:56 WrapperNode [2020-07-07 12:38:56,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 12:38:56,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 12:38:56,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 12:38:56,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 12:38:56,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:38:56" (1/1) ... [2020-07-07 12:38:56,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:38:56" (1/1) ... [2020-07-07 12:38:56,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:38:56" (1/1) ... [2020-07-07 12:38:56,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:38:56" (1/1) ... [2020-07-07 12:38:57,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:38:56" (1/1) ... [2020-07-07 12:38:57,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:38:56" (1/1) ... [2020-07-07 12:38:57,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:38:56" (1/1) ... [2020-07-07 12:38:57,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 12:38:57,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 12:38:57,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 12:38:57,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 12:38:57,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:38:56" (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 [2020-07-07 12:38:57,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 12:38:57,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 12:38:57,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-07 12:38:57,130 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-07 12:38:57,130 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-07 12:38:57,130 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-07 12:38:57,130 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-07 12:38:57,130 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-07 12:38:57,131 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-07 12:38:57,131 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-07 12:38:57,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-07-07 12:38:57,132 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-07 12:38:57,132 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-07 12:38:57,132 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-07 12:38:57,132 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-07 12:38:57,132 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-07 12:38:57,132 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-07 12:38:57,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-07 12:38:57,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-07 12:38:57,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-07 12:38:57,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-07 12:38:57,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-07 12:38:57,137 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-07 12:38:57,137 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-07 12:38:57,137 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-07 12:38:57,138 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-07 12:38:57,138 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-07-07 12:38:57,138 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-07 12:38:57,138 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-07 12:38:57,138 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-07 12:38:57,138 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-07 12:38:57,138 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-07 12:38:57,139 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-07 12:38:57,139 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-07 12:38:57,139 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-07 12:38:57,139 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-07 12:38:57,139 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-07 12:38:57,139 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 12:38:57,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 12:38:57,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 12:38:57,140 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-07 12:38:57,140 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-07 12:38:57,140 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-07 12:38:57,140 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-07 12:38:57,140 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-07 12:38:57,141 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-07 12:38:57,141 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-07 12:38:57,141 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-07 12:38:57,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 12:38:57,141 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-07 12:38:57,141 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-07 12:38:57,142 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-07-07 12:38:57,142 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-07 12:38:57,142 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-07 12:38:57,142 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-07 12:38:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-07 12:38:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-07 12:38:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 12:38:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 12:38:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-07 12:38:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 12:38:57,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 12:38:57,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 12:38:57,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 12:38:57,144 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-07 12:38:57,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 12:38:57,144 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-07 12:38:57,144 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-07 12:38:57,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 12:38:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-07 12:38:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-07 12:38:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-07 12:38:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-07 12:38:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-07 12:38:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-07 12:38:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-07 12:38:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-07 12:38:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-07 12:38:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-07 12:38:57,147 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-07 12:38:57,148 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-07 12:38:57,149 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-07-07 12:38:57,149 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-07 12:38:57,149 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-07 12:38:57,149 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-07 12:38:57,149 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-07 12:38:57,149 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 12:38:57,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 12:38:57,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-07 12:38:57,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 12:38:58,320 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 12:38:58,321 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-07 12:38:58,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 12:38:58 BoogieIcfgContainer [2020-07-07 12:38:58,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 12:38:58,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 12:38:58,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 12:38:58,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 12:38:58,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 12:38:56" (1/3) ... [2020-07-07 12:38:58,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d46c21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 12:38:58, skipping insertion in model container [2020-07-07 12:38:58,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:38:56" (2/3) ... [2020-07-07 12:38:58,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d46c21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 12:38:58, skipping insertion in model container [2020-07-07 12:38:58,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 12:38:58" (3/3) ... [2020-07-07 12:38:58,336 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product41.cil.c [2020-07-07 12:38:58,347 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 12:38:58,356 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 12:38:58,370 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 12:38:58,392 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 12:38:58,392 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 12:38:58,393 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 12:38:58,393 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 12:38:58,393 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 12:38:58,393 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 12:38:58,394 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 12:38:58,394 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 12:38:58,415 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states. [2020-07-07 12:38:58,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-07-07 12:38:58,447 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:38:58,449 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] [2020-07-07 12:38:58,449 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:38:58,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:38:58,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1993009160, now seen corresponding path program 1 times [2020-07-07 12:38:58,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:38:58,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909736828] [2020-07-07 12:38:58,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:38:58,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:59,190 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:38:59,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:59,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:59,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:59,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:38:59,428 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:38:59,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909736828] [2020-07-07 12:38:59,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:38:59,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 12:38:59,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654376132] [2020-07-07 12:38:59,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 12:38:59,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:38:59,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 12:38:59,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 12:38:59,456 INFO L87 Difference]: Start difference. First operand 300 states. Second operand 3 states. [2020-07-07 12:39:00,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:00,847 INFO L93 Difference]: Finished difference Result 465 states and 549 transitions. [2020-07-07 12:39:00,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 12:39:00,849 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-07-07 12:39:00,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:00,868 INFO L225 Difference]: With dead ends: 465 [2020-07-07 12:39:00,868 INFO L226 Difference]: Without dead ends: 290 [2020-07-07 12:39:00,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 12:39:00,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-07-07 12:39:01,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 249. [2020-07-07 12:39:01,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-07-07 12:39:01,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 268 transitions. [2020-07-07 12:39:01,026 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 268 transitions. Word has length 142 [2020-07-07 12:39:01,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:01,027 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 268 transitions. [2020-07-07 12:39:01,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 12:39:01,027 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 268 transitions. [2020-07-07 12:39:01,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-07-07 12:39:01,031 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:01,032 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] [2020-07-07 12:39:01,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 12:39:01,032 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:01,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:01,033 INFO L82 PathProgramCache]: Analyzing trace with hash -534856304, now seen corresponding path program 1 times [2020-07-07 12:39:01,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:01,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912448973] [2020-07-07 12:39:01,034 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:01,405 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:01,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:01,474 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:01,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912448973] [2020-07-07 12:39:01,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:01,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 12:39:01,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203791965] [2020-07-07 12:39:01,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 12:39:01,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:01,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 12:39:01,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 12:39:01,477 INFO L87 Difference]: Start difference. First operand 249 states and 268 transitions. Second operand 4 states. [2020-07-07 12:39:02,092 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:02,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:02,961 INFO L93 Difference]: Finished difference Result 382 states and 424 transitions. [2020-07-07 12:39:02,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 12:39:02,969 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-07-07 12:39:02,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:02,976 INFO L225 Difference]: With dead ends: 382 [2020-07-07 12:39:02,976 INFO L226 Difference]: Without dead ends: 273 [2020-07-07 12:39:02,978 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 [2020-07-07 12:39:02,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-07-07 12:39:03,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 239. [2020-07-07 12:39:03,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-07-07 12:39:03,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 255 transitions. [2020-07-07 12:39:03,058 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 255 transitions. Word has length 143 [2020-07-07 12:39:03,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:03,059 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 255 transitions. [2020-07-07 12:39:03,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 12:39:03,059 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 255 transitions. [2020-07-07 12:39:03,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-07-07 12:39:03,061 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:03,062 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] [2020-07-07 12:39:03,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 12:39:03,062 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:03,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:03,063 INFO L82 PathProgramCache]: Analyzing trace with hash -713358115, now seen corresponding path program 1 times [2020-07-07 12:39:03,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:03,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458706377] [2020-07-07 12:39:03,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:03,391 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:03,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:03,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:03,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:03,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:03,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:03,547 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:03,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458706377] [2020-07-07 12:39:03,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:03,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 12:39:03,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509844844] [2020-07-07 12:39:03,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 12:39:03,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:03,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 12:39:03,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-07 12:39:03,550 INFO L87 Difference]: Start difference. First operand 239 states and 255 transitions. Second operand 9 states. [2020-07-07 12:39:04,027 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:04,350 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:04,613 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:39:04,847 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:05,118 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:05,353 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:06,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:06,797 INFO L93 Difference]: Finished difference Result 402 states and 449 transitions. [2020-07-07 12:39:06,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 12:39:06,798 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 152 [2020-07-07 12:39:06,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:06,804 INFO L225 Difference]: With dead ends: 402 [2020-07-07 12:39:06,804 INFO L226 Difference]: Without dead ends: 273 [2020-07-07 12:39:06,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-07-07 12:39:06,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-07-07 12:39:06,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 239. [2020-07-07 12:39:06,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-07-07 12:39:06,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 254 transitions. [2020-07-07 12:39:06,897 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 254 transitions. Word has length 152 [2020-07-07 12:39:06,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:06,900 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 254 transitions. [2020-07-07 12:39:06,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 12:39:06,902 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 254 transitions. [2020-07-07 12:39:06,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-07-07 12:39:06,905 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:06,905 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] [2020-07-07 12:39:06,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 12:39:06,906 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:06,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:06,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1380723004, now seen corresponding path program 1 times [2020-07-07 12:39:06,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:06,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392241047] [2020-07-07 12:39:06,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:06,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:07,253 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:07,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:07,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:07,387 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:07,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392241047] [2020-07-07 12:39:07,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:07,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 12:39:07,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396557070] [2020-07-07 12:39:07,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 12:39:07,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:07,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 12:39:07,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-07 12:39:07,390 INFO L87 Difference]: Start difference. First operand 239 states and 254 transitions. Second operand 6 states. [2020-07-07 12:39:08,014 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:09,673 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:10,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:10,153 INFO L93 Difference]: Finished difference Result 524 states and 592 transitions. [2020-07-07 12:39:10,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-07 12:39:10,154 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2020-07-07 12:39:10,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:10,159 INFO L225 Difference]: With dead ends: 524 [2020-07-07 12:39:10,160 INFO L226 Difference]: Without dead ends: 395 [2020-07-07 12:39:10,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-07-07 12:39:10,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-07-07 12:39:10,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 336. [2020-07-07 12:39:10,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-07-07 12:39:10,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 361 transitions. [2020-07-07 12:39:10,293 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 361 transitions. Word has length 160 [2020-07-07 12:39:10,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:10,293 INFO L479 AbstractCegarLoop]: Abstraction has 336 states and 361 transitions. [2020-07-07 12:39:10,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 12:39:10,293 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 361 transitions. [2020-07-07 12:39:10,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-07-07 12:39:10,296 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:10,296 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] [2020-07-07 12:39:10,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 12:39:10,297 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:10,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:10,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1083295401, now seen corresponding path program 1 times [2020-07-07 12:39:10,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:10,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111882835] [2020-07-07 12:39:10,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:10,623 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:10,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:10,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:10,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:10,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:10,855 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:10,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111882835] [2020-07-07 12:39:10,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:10,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 12:39:10,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281885968] [2020-07-07 12:39:10,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 12:39:10,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:10,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 12:39:10,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-07-07 12:39:10,859 INFO L87 Difference]: Start difference. First operand 336 states and 361 transitions. Second operand 14 states. [2020-07-07 12:39:11,387 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:11,718 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:11,989 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:39:12,225 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:12,464 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:12,700 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:13,345 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:14,366 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:14,609 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:14,893 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:15,172 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:15,447 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:39:15,680 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:39:15,913 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:16,182 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:16,504 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:39:16,771 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:18,022 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:18,250 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:18,542 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:19,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:19,268 INFO L93 Difference]: Finished difference Result 1012 states and 1198 transitions. [2020-07-07 12:39:19,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-07 12:39:19,269 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 184 [2020-07-07 12:39:19,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:19,275 INFO L225 Difference]: With dead ends: 1012 [2020-07-07 12:39:19,275 INFO L226 Difference]: Without dead ends: 786 [2020-07-07 12:39:19,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2020-07-07 12:39:19,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2020-07-07 12:39:19,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 689. [2020-07-07 12:39:19,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2020-07-07 12:39:19,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 762 transitions. [2020-07-07 12:39:19,543 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 762 transitions. Word has length 184 [2020-07-07 12:39:19,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:19,544 INFO L479 AbstractCegarLoop]: Abstraction has 689 states and 762 transitions. [2020-07-07 12:39:19,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 12:39:19,544 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 762 transitions. [2020-07-07 12:39:19,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-07-07 12:39:19,550 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:19,550 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] [2020-07-07 12:39:19,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 12:39:19,551 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:19,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:19,551 INFO L82 PathProgramCache]: Analyzing trace with hash 792198682, now seen corresponding path program 1 times [2020-07-07 12:39:19,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:19,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279087831] [2020-07-07 12:39:19,552 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:19,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:19,870 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:19,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:19,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:20,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:20,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:20,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:20,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:20,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:20,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:20,278 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:20,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279087831] [2020-07-07 12:39:20,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:20,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 12:39:20,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639152584] [2020-07-07 12:39:20,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 12:39:20,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:20,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 12:39:20,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-07-07 12:39:20,285 INFO L87 Difference]: Start difference. First operand 689 states and 762 transitions. Second operand 14 states. [2020-07-07 12:39:20,920 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:21,763 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:22,396 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:22,652 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:39:22,917 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-07-07 12:39:23,187 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:23,433 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:23,687 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:39:23,937 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:39:24,192 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-07-07 12:39:24,424 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:24,699 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:24,980 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:39:25,235 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:27,284 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:27,532 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:39:27,795 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-07-07 12:39:28,042 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:28,288 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:28,512 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:29,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:29,155 INFO L93 Difference]: Finished difference Result 1379 states and 1619 transitions. [2020-07-07 12:39:29,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-07-07 12:39:29,156 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 263 [2020-07-07 12:39:29,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:29,165 INFO L225 Difference]: With dead ends: 1379 [2020-07-07 12:39:29,165 INFO L226 Difference]: Without dead ends: 800 [2020-07-07 12:39:29,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=320, Invalid=1402, Unknown=0, NotChecked=0, Total=1722 [2020-07-07 12:39:29,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2020-07-07 12:39:29,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 685. [2020-07-07 12:39:29,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 685 states. [2020-07-07 12:39:29,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 758 transitions. [2020-07-07 12:39:29,452 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 758 transitions. Word has length 263 [2020-07-07 12:39:29,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:29,453 INFO L479 AbstractCegarLoop]: Abstraction has 685 states and 758 transitions. [2020-07-07 12:39:29,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 12:39:29,454 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 758 transitions. [2020-07-07 12:39:29,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-07-07 12:39:29,463 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:29,463 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] [2020-07-07 12:39:29,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 12:39:29,464 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:29,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:29,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1117850901, now seen corresponding path program 1 times [2020-07-07 12:39:29,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:29,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246190473] [2020-07-07 12:39:29,465 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,841 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:29,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:30,096 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:30,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246190473] [2020-07-07 12:39:30,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:30,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-07-07 12:39:30,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746190369] [2020-07-07 12:39:30,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-07 12:39:30,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:30,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-07 12:39:30,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-07-07 12:39:30,101 INFO L87 Difference]: Start difference. First operand 685 states and 758 transitions. Second operand 13 states. [2020-07-07 12:39:30,662 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:31,376 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:32,463 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:32,721 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:33,003 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:33,288 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:33,523 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:33,794 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:34,037 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:34,308 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:34,610 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:39:34,868 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:35,887 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:36,119 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:37,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:37,528 INFO L93 Difference]: Finished difference Result 1493 states and 1767 transitions. [2020-07-07 12:39:37,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-07-07 12:39:37,528 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 259 [2020-07-07 12:39:37,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:37,536 INFO L225 Difference]: With dead ends: 1493 [2020-07-07 12:39:37,536 INFO L226 Difference]: Without dead ends: 1086 [2020-07-07 12:39:37,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 49 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=360, Invalid=900, Unknown=0, NotChecked=0, Total=1260 [2020-07-07 12:39:37,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2020-07-07 12:39:37,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 884. [2020-07-07 12:39:37,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2020-07-07 12:39:37,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 987 transitions. [2020-07-07 12:39:37,804 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 987 transitions. Word has length 259 [2020-07-07 12:39:37,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:37,805 INFO L479 AbstractCegarLoop]: Abstraction has 884 states and 987 transitions. [2020-07-07 12:39:37,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-07 12:39:37,805 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 987 transitions. [2020-07-07 12:39:37,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-07-07 12:39:37,808 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:37,808 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] [2020-07-07 12:39:37,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 12:39:37,808 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:37,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:37,809 INFO L82 PathProgramCache]: Analyzing trace with hash 517849007, now seen corresponding path program 1 times [2020-07-07 12:39:37,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:37,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583587117] [2020-07-07 12:39:37,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:37,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:38,069 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:38,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:38,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:38,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:38,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:38,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:38,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:38,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:38,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:38,320 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:38,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583587117] [2020-07-07 12:39:38,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:38,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 12:39:38,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727732735] [2020-07-07 12:39:38,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 12:39:38,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:38,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 12:39:38,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-07-07 12:39:38,323 INFO L87 Difference]: Start difference. First operand 884 states and 987 transitions. Second operand 14 states. [2020-07-07 12:39:38,859 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:39,100 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:39:39,356 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:39,593 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:39,827 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:40,588 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:40,829 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:41,067 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:41,312 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:41,543 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:42,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:42,858 INFO L93 Difference]: Finished difference Result 1491 states and 1714 transitions. [2020-07-07 12:39:42,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-07 12:39:42,863 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 254 [2020-07-07 12:39:42,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:42,868 INFO L225 Difference]: With dead ends: 1491 [2020-07-07 12:39:42,868 INFO L226 Difference]: Without dead ends: 717 [2020-07-07 12:39:42,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-07-07 12:39:42,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2020-07-07 12:39:43,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 675. [2020-07-07 12:39:43,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 675 states. [2020-07-07 12:39:43,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 756 transitions. [2020-07-07 12:39:43,081 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 756 transitions. Word has length 254 [2020-07-07 12:39:43,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:43,082 INFO L479 AbstractCegarLoop]: Abstraction has 675 states and 756 transitions. [2020-07-07 12:39:43,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 12:39:43,082 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 756 transitions. [2020-07-07 12:39:43,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-07-07 12:39:43,084 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:43,084 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, 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] [2020-07-07 12:39:43,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 12:39:43,085 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:43,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:43,085 INFO L82 PathProgramCache]: Analyzing trace with hash 685258019, now seen corresponding path program 2 times [2020-07-07 12:39:43,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:43,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898405508] [2020-07-07 12:39:43,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:43,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 12:39:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 12:39:43,800 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:43,801 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 12:39:43,801 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 12:39:43,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 12:39:43,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 12:39:43 BoogieIcfgContainer [2020-07-07 12:39:43,862 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 12:39:43,864 INFO L168 Benchmark]: Toolchain (without parser) took 47548.16 ms. Allocated memory was 134.7 MB in the beginning and 897.1 MB in the end (delta: 762.3 MB). Free memory was 99.1 MB in the beginning and 435.8 MB in the end (delta: -336.7 MB). Peak memory consumption was 425.6 MB. Max. memory is 7.1 GB. [2020-07-07 12:39:43,865 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 134.7 MB. Free memory was 118.2 MB in the beginning and 118.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-07 12:39:43,867 INFO L168 Benchmark]: CACSL2BoogieTranslator took 631.17 ms. Allocated memory was 134.7 MB in the beginning and 198.2 MB in the end (delta: 63.4 MB). Free memory was 98.8 MB in the beginning and 165.9 MB in the end (delta: -67.1 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2020-07-07 12:39:43,871 INFO L168 Benchmark]: Boogie Preprocessor took 104.62 ms. Allocated memory is still 198.2 MB. Free memory was 165.9 MB in the beginning and 161.5 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-07-07 12:39:43,872 INFO L168 Benchmark]: RCFGBuilder took 1273.48 ms. Allocated memory was 198.2 MB in the beginning and 224.4 MB in the end (delta: 26.2 MB). Free memory was 161.5 MB in the beginning and 173.2 MB in the end (delta: -11.7 MB). Peak memory consumption was 90.1 MB. Max. memory is 7.1 GB. [2020-07-07 12:39:43,879 INFO L168 Benchmark]: TraceAbstraction took 45533.22 ms. Allocated memory was 224.4 MB in the beginning and 897.1 MB in the end (delta: 672.7 MB). Free memory was 171.7 MB in the beginning and 435.8 MB in the end (delta: -264.0 MB). Peak memory consumption was 408.6 MB. Max. memory is 7.1 GB. [2020-07-07 12:39:43,888 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 134.7 MB. Free memory was 118.2 MB in the beginning and 118.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 631.17 ms. Allocated memory was 134.7 MB in the beginning and 198.2 MB in the end (delta: 63.4 MB). Free memory was 98.8 MB in the beginning and 165.9 MB in the end (delta: -67.1 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.62 ms. Allocated memory is still 198.2 MB. Free memory was 165.9 MB in the beginning and 161.5 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1273.48 ms. Allocated memory was 198.2 MB in the beginning and 224.4 MB in the end (delta: 26.2 MB). Free memory was 161.5 MB in the beginning and 173.2 MB in the end (delta: -11.7 MB). Peak memory consumption was 90.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 45533.22 ms. Allocated memory was 224.4 MB in the beginning and 897.1 MB in the end (delta: 672.7 MB). Free memory was 171.7 MB in the beginning and 435.8 MB in the end (delta: -264.0 MB). Peak memory consumption was 408.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 211]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L385] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L652] int pumpRunning = 0; [L653] int systemActive = 1; [L822] int cleanupTimeShifts = 4; [L895] int retValue_acc ; [L896] int tmp ; [L900] FCALL select_helpers() [L901] FCALL select_features() [L902] CALL, EXPR valid_product() [L198] int retValue_acc ; [L201] retValue_acc = 1 [L202] return (retValue_acc); [L902] RET, EXPR valid_product() [L902] tmp = valid_product() [L904] COND TRUE \read(tmp) [L906] FCALL setup() [L907] CALL runTest() [L889] CALL test() [L585] int splverifierCounter ; [L586] int tmp ; [L587] int tmp___0 ; [L588] int tmp___1 ; [L589] int tmp___2 ; [L592] splverifierCounter = 0 [L594] COND TRUE 1 [L596] COND TRUE splverifierCounter < 4 [L602] tmp = __VERIFIER_nondet_int() [L604] COND TRUE \read(tmp) [L606] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L606] RET waterRise() [L612] tmp___0 = __VERIFIER_nondet_int() [L614] COND FALSE !(\read(tmp___0)) [L622] tmp___2 = __VERIFIER_nondet_int() [L624] COND TRUE \read(tmp___2) [L637] CALL timeShift() [L659] COND FALSE !(\read(pumpRunning)) [L666] COND TRUE \read(systemActive) [L668] CALL processEnvironment() [L688] int tmp ; [L691] COND TRUE ! pumpRunning [L693] CALL, EXPR isHighWaterLevel() [L803] int retValue_acc ; [L804] int tmp ; [L805] int tmp___0 ; [L809] CALL, EXPR isHighWaterSensorDry() [L127] int retValue_acc ; [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); [L809] RET, EXPR isHighWaterSensorDry() [L809] tmp = isHighWaterSensorDry() [L811] COND FALSE !(\read(tmp)) [L814] tmp___0 = 1 [L816] retValue_acc = tmp___0 [L817] return (retValue_acc); [L693] RET, EXPR isHighWaterLevel() [L693] tmp = isHighWaterLevel() [L695] COND TRUE \read(tmp) [L697] CALL activatePump() [L722] int tmp ; [L726] CALL, EXPR isMethaneAlarm() [L747] int retValue_acc ; [L751] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L751] RET, EXPR isMethaneLevelCritical() [L751] retValue_acc = isMethaneLevelCritical() [L753] return (retValue_acc); [L726] RET, EXPR isMethaneAlarm() [L726] tmp = isMethaneAlarm() [L728] COND FALSE !(\read(tmp)) [L732] CALL activatePump__wrappee__highWaterSensor() [L716] pumpRunning = 1 [L732] RET activatePump__wrappee__highWaterSensor() [L697] RET activatePump() [L668] RET processEnvironment() [L674] CALL __utac_acc__Specification4_spec__1() [L144] int tmp ; [L145] int tmp___0 ; [L149] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L149] RET, EXPR getWaterLevel() [L149] tmp = getWaterLevel() [L151] COND FALSE !(tmp == 0) [L674] RET __utac_acc__Specification4_spec__1() [L637] RET timeShift() [L594] COND TRUE 1 [L596] COND TRUE splverifierCounter < 4 [L602] tmp = __VERIFIER_nondet_int() [L604] COND FALSE !(\read(tmp)) [L612] tmp___0 = __VERIFIER_nondet_int() [L614] COND FALSE !(\read(tmp___0)) [L622] tmp___2 = __VERIFIER_nondet_int() [L624] COND TRUE \read(tmp___2) [L637] CALL timeShift() [L659] COND TRUE \read(pumpRunning) [L661] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L661] RET lowerWaterLevel() [L666] COND TRUE \read(systemActive) [L668] CALL processEnvironment() [L688] int tmp ; [L691] COND FALSE !(! pumpRunning) [L706] FCALL processEnvironment__wrappee__base() [L668] RET processEnvironment() [L674] CALL __utac_acc__Specification4_spec__1() [L144] int tmp ; [L145] int tmp___0 ; [L149] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L149] RET, EXPR getWaterLevel() [L149] tmp = getWaterLevel() [L151] COND FALSE !(tmp == 0) [L674] RET __utac_acc__Specification4_spec__1() [L637] RET timeShift() [L594] COND TRUE 1 [L596] COND TRUE splverifierCounter < 4 [L602] tmp = __VERIFIER_nondet_int() [L604] COND FALSE !(\read(tmp)) [L612] tmp___0 = __VERIFIER_nondet_int() [L614] COND FALSE !(\read(tmp___0)) [L622] tmp___2 = __VERIFIER_nondet_int() [L624] COND TRUE \read(tmp___2) [L637] CALL timeShift() [L659] COND TRUE \read(pumpRunning) [L661] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L661] RET lowerWaterLevel() [L666] COND TRUE \read(systemActive) [L668] CALL processEnvironment() [L688] int tmp ; [L691] COND FALSE !(! pumpRunning) [L706] FCALL processEnvironment__wrappee__base() [L668] RET processEnvironment() [L674] CALL __utac_acc__Specification4_spec__1() [L144] int tmp ; [L145] int tmp___0 ; [L149] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L149] RET, EXPR getWaterLevel() [L149] tmp = getWaterLevel() [L151] COND TRUE tmp == 0 [L153] CALL, EXPR isPumpRunning() [L758] int retValue_acc ; [L761] retValue_acc = pumpRunning [L762] return (retValue_acc); [L153] RET, EXPR isPumpRunning() [L153] tmp___0 = isPumpRunning() [L155] COND TRUE \read(tmp___0) [L157] CALL __automaton_fail() [L211] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 615 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 45.4s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 38.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1985 SDtfs, 3735 SDslu, 4692 SDs, 0 SdLazy, 9938 SolverSat, 1153 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 405 GetRequests, 244 SyntacticMatches, 6 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 19.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=884occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 624 StatesRemovedByMinimization, 8 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...