/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_spec2_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 12:28:43,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 12:28:43,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 12:28:43,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 12:28:43,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 12:28:43,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 12:28:43,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 12:28:43,211 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 12:28:43,213 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 12:28:43,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 12:28:43,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 12:28:43,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 12:28:43,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 12:28:43,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 12:28:43,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 12:28:43,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 12:28:43,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 12:28:43,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 12:28:43,227 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 12:28:43,233 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 12:28:43,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 12:28:43,237 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 12:28:43,238 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 12:28:43,239 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 12:28:43,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 12:28:43,241 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 12:28:43,241 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 12:28:43,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 12:28:43,245 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 12:28:43,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 12:28:43,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 12:28:43,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 12:28:43,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 12:28:43,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 12:28:43,251 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 12:28:43,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 12:28:43,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 12:28:43,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 12:28:43,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 12:28:43,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 12:28:43,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 12:28:43,256 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 12:28:43,281 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 12:28:43,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 12:28:43,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 12:28:43,286 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 12:28:43,287 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 12:28:43,287 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 12:28:43,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 12:28:43,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 12:28:43,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 12:28:43,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 12:28:43,288 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 12:28:43,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 12:28:43,288 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 12:28:43,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 12:28:43,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 12:28:43,291 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 12:28:43,291 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 12:28:43,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 12:28:43,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 12:28:43,292 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 12:28:43,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 12:28:43,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 12:28:43,292 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 12:28:43,569 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 12:28:43,582 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 12:28:43,585 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 12:28:43,586 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 12:28:43,587 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 12:28:43,588 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product36.cil.c [2020-07-07 12:28:43,648 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3603295c5/1b4801e633424ab69a37ed5e8861a298/FLAG144893939 [2020-07-07 12:28:44,184 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 12:28:44,185 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product36.cil.c [2020-07-07 12:28:44,199 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3603295c5/1b4801e633424ab69a37ed5e8861a298/FLAG144893939 [2020-07-07 12:28:44,503 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3603295c5/1b4801e633424ab69a37ed5e8861a298 [2020-07-07 12:28:44,513 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 12:28:44,515 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 12:28:44,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 12:28:44,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 12:28:44,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 12:28:44,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 12:28:44" (1/1) ... [2020-07-07 12:28:44,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d1cb88d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:28:44, skipping insertion in model container [2020-07-07 12:28:44,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 12:28:44" (1/1) ... [2020-07-07 12:28:44,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 12:28:44,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 12:28:45,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 12:28:45,022 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 12:28:45,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 12:28:45,172 INFO L208 MainTranslator]: Completed translation [2020-07-07 12:28:45,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:28:45 WrapperNode [2020-07-07 12:28:45,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 12:28:45,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 12:28:45,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 12:28:45,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 12:28:45,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:28:45" (1/1) ... [2020-07-07 12:28:45,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:28:45" (1/1) ... [2020-07-07 12:28:45,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:28:45" (1/1) ... [2020-07-07 12:28:45,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:28:45" (1/1) ... [2020-07-07 12:28:45,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:28:45" (1/1) ... [2020-07-07 12:28:45,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:28:45" (1/1) ... [2020-07-07 12:28:45,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:28:45" (1/1) ... [2020-07-07 12:28:45,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 12:28:45,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 12:28:45,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 12:28:45,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 12:28:45,257 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:28:45" (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 12:28:45,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 12:28:45,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 12:28:45,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-07 12:28:45,327 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-07 12:28:45,327 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-07 12:28:45,327 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-07 12:28:45,327 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-07 12:28:45,327 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-07 12:28:45,328 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-07 12:28:45,328 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-07 12:28:45,328 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-07 12:28:45,328 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-07 12:28:45,328 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-07 12:28:45,328 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-07 12:28:45,329 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-07 12:28:45,329 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-07 12:28:45,329 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-07 12:28:45,329 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-07 12:28:45,329 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-07 12:28:45,330 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-07 12:28:45,330 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-07 12:28:45,330 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-07 12:28:45,330 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-07 12:28:45,330 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-07 12:28:45,330 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 12:28:45,331 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-07 12:28:45,331 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-07 12:28:45,331 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-07 12:28:45,331 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-07 12:28:45,331 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-07 12:28:45,331 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-07 12:28:45,332 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-07 12:28:45,332 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-07 12:28:45,332 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-07 12:28:45,332 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-07 12:28:45,332 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-07 12:28:45,333 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-07 12:28:45,333 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-07 12:28:45,333 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-07-07 12:28:45,333 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-07-07 12:28:45,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 12:28:45,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 12:28:45,333 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-07 12:28:45,334 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-07 12:28:45,334 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-07 12:28:45,334 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-07 12:28:45,334 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-07 12:28:45,334 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-07 12:28:45,334 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-07 12:28:45,335 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-07 12:28:45,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 12:28:45,335 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-07 12:28:45,335 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 12:28:45,335 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 12:28:45,335 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-07 12:28:45,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 12:28:45,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 12:28:45,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 12:28:45,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 12:28:45,336 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-07 12:28:45,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 12:28:45,336 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-07 12:28:45,337 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-07 12:28:45,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 12:28:45,337 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-07 12:28:45,337 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-07 12:28:45,337 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-07 12:28:45,337 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-07 12:28:45,337 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-07 12:28:45,338 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-07 12:28:45,338 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-07 12:28:45,338 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-07 12:28:45,338 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-07 12:28:45,338 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-07 12:28:45,338 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-07 12:28:45,339 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-07 12:28:45,339 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-07-07 12:28:45,339 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-07 12:28:45,339 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-07 12:28:45,339 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 12:28:45,339 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-07 12:28:45,340 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-07 12:28:45,340 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-07 12:28:45,340 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-07 12:28:45,340 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-07 12:28:45,340 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-07-07 12:28:45,340 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-07 12:28:45,340 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-07 12:28:45,341 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-07 12:28:45,341 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-07 12:28:45,341 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-07 12:28:45,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 12:28:45,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-07 12:28:45,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 12:28:46,552 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 12:28:46,552 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-07 12:28:46,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 12:28:46 BoogieIcfgContainer [2020-07-07 12:28:46,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 12:28:46,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 12:28:46,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 12:28:46,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 12:28:46,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 12:28:44" (1/3) ... [2020-07-07 12:28:46,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb02df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 12:28:46, skipping insertion in model container [2020-07-07 12:28:46,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:28:45" (2/3) ... [2020-07-07 12:28:46,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb02df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 12:28:46, skipping insertion in model container [2020-07-07 12:28:46,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 12:28:46" (3/3) ... [2020-07-07 12:28:46,567 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product36.cil.c [2020-07-07 12:28:46,579 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 12:28:46,588 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 12:28:46,605 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 12:28:46,630 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 12:28:46,631 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 12:28:46,631 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 12:28:46,631 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 12:28:46,631 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 12:28:46,632 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 12:28:46,632 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 12:28:46,632 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 12:28:46,653 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states. [2020-07-07 12:28:46,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-07-07 12:28:46,674 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:28:46,675 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] [2020-07-07 12:28:46,675 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:28:46,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:28:46,682 INFO L82 PathProgramCache]: Analyzing trace with hash 581335990, now seen corresponding path program 1 times [2020-07-07 12:28:46,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:28:46,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466194058] [2020-07-07 12:28:46,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:28:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:47,408 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:28:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:47,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:47,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:47,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:47,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:47,600 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 12:28:47,600 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:28:47,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466194058] [2020-07-07 12:28:47,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:28:47,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 12:28:47,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379827223] [2020-07-07 12:28:47,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 12:28:47,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:28:47,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 12:28:47,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-07 12:28:47,629 INFO L87 Difference]: Start difference. First operand 306 states. Second operand 4 states. [2020-07-07 12:28:48,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:28:48,761 INFO L93 Difference]: Finished difference Result 463 states and 549 transitions. [2020-07-07 12:28:48,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 12:28:48,763 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-07-07 12:28:48,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:28:48,780 INFO L225 Difference]: With dead ends: 463 [2020-07-07 12:28:48,780 INFO L226 Difference]: Without dead ends: 299 [2020-07-07 12:28:48,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-07 12:28:48,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-07-07 12:28:48,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 249. [2020-07-07 12:28:48,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-07-07 12:28:48,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 269 transitions. [2020-07-07 12:28:48,935 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 269 transitions. Word has length 148 [2020-07-07 12:28:48,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:28:48,936 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 269 transitions. [2020-07-07 12:28:48,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 12:28:48,937 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 269 transitions. [2020-07-07 12:28:48,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-07-07 12:28:48,941 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:28:48,942 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] [2020-07-07 12:28:48,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 12:28:48,943 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:28:48,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:28:48,943 INFO L82 PathProgramCache]: Analyzing trace with hash 170641553, now seen corresponding path program 1 times [2020-07-07 12:28:48,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:28:48,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899721481] [2020-07-07 12:28:48,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:28:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:49,364 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:28:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:49,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:49,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:49,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:49,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:49,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:49,474 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 12:28:49,474 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:28:49,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899721481] [2020-07-07 12:28:49,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:28:49,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 12:28:49,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895194201] [2020-07-07 12:28:49,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 12:28:49,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:28:49,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 12:28:49,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-07 12:28:49,478 INFO L87 Difference]: Start difference. First operand 249 states and 269 transitions. Second operand 5 states. [2020-07-07 12:28:50,093 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:28:50,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:28:50,971 INFO L93 Difference]: Finished difference Result 379 states and 430 transitions. [2020-07-07 12:28:50,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 12:28:50,979 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-07-07 12:28:50,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:28:50,983 INFO L225 Difference]: With dead ends: 379 [2020-07-07 12:28:50,983 INFO L226 Difference]: Without dead ends: 288 [2020-07-07 12:28:50,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-07 12:28:50,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-07-07 12:28:51,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 239. [2020-07-07 12:28:51,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-07-07 12:28:51,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 256 transitions. [2020-07-07 12:28:51,080 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 256 transitions. Word has length 149 [2020-07-07 12:28:51,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:28:51,080 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 256 transitions. [2020-07-07 12:28:51,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 12:28:51,081 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 256 transitions. [2020-07-07 12:28:51,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-07-07 12:28:51,083 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:28:51,084 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] [2020-07-07 12:28:51,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 12:28:51,084 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:28:51,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:28:51,085 INFO L82 PathProgramCache]: Analyzing trace with hash -896171093, now seen corresponding path program 1 times [2020-07-07 12:28:51,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:28:51,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442763482] [2020-07-07 12:28:51,085 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:28:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:51,404 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:28:51,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:51,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:51,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:51,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:51,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:51,571 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 12:28:51,571 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:28:51,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442763482] [2020-07-07 12:28:51,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:28:51,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-07 12:28:51,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313521963] [2020-07-07 12:28:51,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-07 12:28:51,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:28:51,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-07 12:28:51,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-07-07 12:28:51,578 INFO L87 Difference]: Start difference. First operand 239 states and 256 transitions. Second operand 11 states. [2020-07-07 12:28:52,285 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:28:52,586 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-07-07 12:28:52,827 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-07-07 12:28:53,089 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:28:53,364 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:28:53,593 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:28:54,504 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:28:56,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:28:56,565 INFO L93 Difference]: Finished difference Result 654 states and 768 transitions. [2020-07-07 12:28:56,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-07 12:28:56,569 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 162 [2020-07-07 12:28:56,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:28:56,574 INFO L225 Difference]: With dead ends: 654 [2020-07-07 12:28:56,575 INFO L226 Difference]: Without dead ends: 530 [2020-07-07 12:28:56,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2020-07-07 12:28:56,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2020-07-07 12:28:56,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 415. [2020-07-07 12:28:56,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-07-07 12:28:56,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 460 transitions. [2020-07-07 12:28:56,741 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 460 transitions. Word has length 162 [2020-07-07 12:28:56,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:28:56,742 INFO L479 AbstractCegarLoop]: Abstraction has 415 states and 460 transitions. [2020-07-07 12:28:56,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-07 12:28:56,742 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 460 transitions. [2020-07-07 12:28:56,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-07-07 12:28:56,745 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:28:56,745 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] [2020-07-07 12:28:56,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 12:28:56,746 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:28:56,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:28:56,746 INFO L82 PathProgramCache]: Analyzing trace with hash 600016420, now seen corresponding path program 1 times [2020-07-07 12:28:56,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:28:56,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088260634] [2020-07-07 12:28:56,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:28:56,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:57,095 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:28:57,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:57,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:57,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:57,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:28:57,229 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 12:28:57,229 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:28:57,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088260634] [2020-07-07 12:28:57,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:28:57,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 12:28:57,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540427674] [2020-07-07 12:28:57,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 12:28:57,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:28:57,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 12:28:57,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-07 12:28:57,232 INFO L87 Difference]: Start difference. First operand 415 states and 460 transitions. Second operand 10 states. [2020-07-07 12:28:57,848 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:28:59,438 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:28:59,676 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:28:59,968 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:29:00,229 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:29:00,497 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:29:00,726 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:29:00,963 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:29:01,349 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:29:02,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:29:02,412 INFO L93 Difference]: Finished difference Result 1135 states and 1377 transitions. [2020-07-07 12:29:02,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-07 12:29:02,412 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 167 [2020-07-07 12:29:02,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:29:02,419 INFO L225 Difference]: With dead ends: 1135 [2020-07-07 12:29:02,419 INFO L226 Difference]: Without dead ends: 835 [2020-07-07 12:29:02,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-07-07 12:29:02,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2020-07-07 12:29:02,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 667. [2020-07-07 12:29:02,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 667 states. [2020-07-07 12:29:02,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 749 transitions. [2020-07-07 12:29:02,642 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 749 transitions. Word has length 167 [2020-07-07 12:29:02,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:29:02,642 INFO L479 AbstractCegarLoop]: Abstraction has 667 states and 749 transitions. [2020-07-07 12:29:02,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 12:29:02,643 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 749 transitions. [2020-07-07 12:29:02,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-07-07 12:29:02,646 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:29:02,646 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] [2020-07-07 12:29:02,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 12:29:02,647 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:29:02,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:29:02,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1379081180, now seen corresponding path program 1 times [2020-07-07 12:29:02,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:29:02,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692260155] [2020-07-07 12:29:02,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:29:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:02,938 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:29:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:03,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:03,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:03,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:03,213 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 12:29:03,213 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:29:03,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692260155] [2020-07-07 12:29:03,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:29:03,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-07 12:29:03,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115302448] [2020-07-07 12:29:03,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-07 12:29:03,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:29:03,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-07 12:29:03,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-07-07 12:29:03,217 INFO L87 Difference]: Start difference. First operand 667 states and 749 transitions. Second operand 11 states. [2020-07-07 12:29:03,724 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:29:05,051 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:29:05,327 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:29:05,627 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:29:05,936 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:29:06,212 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:29:06,864 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:29:07,152 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:29:07,513 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:29:08,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:29:08,751 INFO L93 Difference]: Finished difference Result 1773 states and 2187 transitions. [2020-07-07 12:29:08,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-07-07 12:29:08,752 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 172 [2020-07-07 12:29:08,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:29:08,761 INFO L225 Difference]: With dead ends: 1773 [2020-07-07 12:29:08,762 INFO L226 Difference]: Without dead ends: 1221 [2020-07-07 12:29:08,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=283, Invalid=773, Unknown=0, NotChecked=0, Total=1056 [2020-07-07 12:29:08,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2020-07-07 12:29:09,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 933. [2020-07-07 12:29:09,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 933 states. [2020-07-07 12:29:09,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1055 transitions. [2020-07-07 12:29:09,115 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1055 transitions. Word has length 172 [2020-07-07 12:29:09,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:29:09,115 INFO L479 AbstractCegarLoop]: Abstraction has 933 states and 1055 transitions. [2020-07-07 12:29:09,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-07 12:29:09,116 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1055 transitions. [2020-07-07 12:29:09,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-07-07 12:29:09,120 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:29:09,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:29:09,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 12:29:09,120 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:29:09,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:29:09,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1429417703, now seen corresponding path program 1 times [2020-07-07 12:29:09,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:29:09,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103860078] [2020-07-07 12:29:09,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:29:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:09,422 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:29:09,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:09,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:09,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:09,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:09,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:09,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:09,610 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 12:29:09,610 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:29:09,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103860078] [2020-07-07 12:29:09,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:29:09,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-07 12:29:09,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240285016] [2020-07-07 12:29:09,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-07 12:29:09,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:29:09,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-07 12:29:09,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-07-07 12:29:09,613 INFO L87 Difference]: Start difference. First operand 933 states and 1055 transitions. Second operand 12 states. [2020-07-07 12:29:11,153 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:29:11,425 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-07-07 12:29:11,712 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-07-07 12:29:12,022 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:29:12,307 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-07-07 12:29:12,561 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:29:14,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:29:14,530 INFO L93 Difference]: Finished difference Result 2398 states and 3007 transitions. [2020-07-07 12:29:14,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-07 12:29:14,530 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 200 [2020-07-07 12:29:14,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:29:14,541 INFO L225 Difference]: With dead ends: 2398 [2020-07-07 12:29:14,541 INFO L226 Difference]: Without dead ends: 1580 [2020-07-07 12:29:14,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=231, Invalid=581, Unknown=0, NotChecked=0, Total=812 [2020-07-07 12:29:14,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2020-07-07 12:29:15,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 971. [2020-07-07 12:29:15,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2020-07-07 12:29:15,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1093 transitions. [2020-07-07 12:29:15,052 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1093 transitions. Word has length 200 [2020-07-07 12:29:15,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:29:15,055 INFO L479 AbstractCegarLoop]: Abstraction has 971 states and 1093 transitions. [2020-07-07 12:29:15,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-07 12:29:15,055 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1093 transitions. [2020-07-07 12:29:15,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-07-07 12:29:15,061 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:29:15,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:29:15,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 12:29:15,061 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:29:15,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:29:15,062 INFO L82 PathProgramCache]: Analyzing trace with hash 289623879, now seen corresponding path program 1 times [2020-07-07 12:29:15,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:29:15,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045267093] [2020-07-07 12:29:15,062 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:29:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:15,337 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:29:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:15,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:15,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:15,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:15,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:15,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:15,562 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 12:29:15,563 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:29:15,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045267093] [2020-07-07 12:29:15,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:29:15,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-07-07 12:29:15,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472365303] [2020-07-07 12:29:15,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-07 12:29:15,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:29:15,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-07 12:29:15,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-07-07 12:29:15,564 INFO L87 Difference]: Start difference. First operand 971 states and 1093 transitions. Second operand 15 states. [2020-07-07 12:29:16,169 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:29:16,415 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-07-07 12:29:16,667 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:29:16,922 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-07-07 12:29:17,201 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:29:18,181 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:29:18,444 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-07-07 12:29:18,740 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:29:19,022 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-07-07 12:29:19,277 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:29:21,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:29:21,400 INFO L93 Difference]: Finished difference Result 2480 states and 3145 transitions. [2020-07-07 12:29:21,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-07 12:29:21,402 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 200 [2020-07-07 12:29:21,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:29:21,412 INFO L225 Difference]: With dead ends: 2480 [2020-07-07 12:29:21,412 INFO L226 Difference]: Without dead ends: 1624 [2020-07-07 12:29:21,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=314, Invalid=946, Unknown=0, NotChecked=0, Total=1260 [2020-07-07 12:29:21,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1624 states. [2020-07-07 12:29:21,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1624 to 995. [2020-07-07 12:29:21,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-07-07 12:29:21,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1117 transitions. [2020-07-07 12:29:21,856 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1117 transitions. Word has length 200 [2020-07-07 12:29:21,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:29:21,856 INFO L479 AbstractCegarLoop]: Abstraction has 995 states and 1117 transitions. [2020-07-07 12:29:21,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-07 12:29:21,857 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1117 transitions. [2020-07-07 12:29:21,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-07-07 12:29:21,861 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:29:21,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:29:21,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 12:29:21,862 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:29:21,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:29:21,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1841498812, now seen corresponding path program 1 times [2020-07-07 12:29:21,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:29:21,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355061128] [2020-07-07 12:29:21,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:29:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:22,157 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:29:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:22,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:22,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:22,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:22,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:22,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:22,364 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 12:29:22,364 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:29:22,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355061128] [2020-07-07 12:29:22,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:29:22,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 12:29:22,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873849163] [2020-07-07 12:29:22,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 12:29:22,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:29:22,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 12:29:22,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-07-07 12:29:22,366 INFO L87 Difference]: Start difference. First operand 995 states and 1117 transitions. Second operand 9 states. [2020-07-07 12:29:22,881 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:29:23,504 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:29:27,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:29:27,192 INFO L93 Difference]: Finished difference Result 4015 states and 5133 transitions. [2020-07-07 12:29:27,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-07-07 12:29:27,193 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 200 [2020-07-07 12:29:27,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:29:27,211 INFO L225 Difference]: With dead ends: 4015 [2020-07-07 12:29:27,211 INFO L226 Difference]: Without dead ends: 3135 [2020-07-07 12:29:27,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=338, Invalid=1302, Unknown=0, NotChecked=0, Total=1640 [2020-07-07 12:29:27,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3135 states. [2020-07-07 12:29:28,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3135 to 2147. [2020-07-07 12:29:28,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2147 states. [2020-07-07 12:29:28,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 2443 transitions. [2020-07-07 12:29:28,055 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 2443 transitions. Word has length 200 [2020-07-07 12:29:28,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:29:28,055 INFO L479 AbstractCegarLoop]: Abstraction has 2147 states and 2443 transitions. [2020-07-07 12:29:28,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 12:29:28,056 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 2443 transitions. [2020-07-07 12:29:28,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-07-07 12:29:28,062 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:29:28,062 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:29:28,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 12:29:28,063 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:29:28,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:29:28,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1365562748, now seen corresponding path program 1 times [2020-07-07 12:29:28,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:29:28,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26481842] [2020-07-07 12:29:28,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:29:28,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:28,323 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:29:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:28,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:28,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:28,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:28,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:29:28,444 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 12:29:28,445 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:29:28,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26481842] [2020-07-07 12:29:28,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:29:28,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 12:29:28,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094854472] [2020-07-07 12:29:28,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 12:29:28,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:29:28,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 12:29:28,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-07-07 12:29:28,447 INFO L87 Difference]: Start difference. First operand 2147 states and 2443 transitions. Second operand 9 states. [2020-07-07 12:29:28,967 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:29:33,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:29:33,894 INFO L93 Difference]: Finished difference Result 4982 states and 6473 transitions. [2020-07-07 12:29:33,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-07-07 12:29:33,902 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 205 [2020-07-07 12:29:33,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:29:33,930 INFO L225 Difference]: With dead ends: 4982 [2020-07-07 12:29:33,930 INFO L226 Difference]: Without dead ends: 4979 [2020-07-07 12:29:33,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=373, Invalid=1267, Unknown=0, NotChecked=0, Total=1640 [2020-07-07 12:29:33,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4979 states. [2020-07-07 12:29:35,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4979 to 3376. [2020-07-07 12:29:35,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3376 states. [2020-07-07 12:29:35,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3376 states to 3376 states and 3929 transitions. [2020-07-07 12:29:35,187 INFO L78 Accepts]: Start accepts. Automaton has 3376 states and 3929 transitions. Word has length 205 [2020-07-07 12:29:35,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:29:35,188 INFO L479 AbstractCegarLoop]: Abstraction has 3376 states and 3929 transitions. [2020-07-07 12:29:35,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 12:29:35,188 INFO L276 IsEmpty]: Start isEmpty. Operand 3376 states and 3929 transitions. [2020-07-07 12:29:35,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-07-07 12:29:35,197 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:29:35,198 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, 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] [2020-07-07 12:29:35,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 12:29:35,198 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:29:35,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:29:35,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1316661854, now seen corresponding path program 1 times [2020-07-07 12:29:35,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:29:35,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922739266] [2020-07-07 12:29:35,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:29:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 12:29:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 12:29:35,665 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:29:35,666 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 12:29:35,666 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 12:29:35,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-07 12:29:35,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 12:29:35 BoogieIcfgContainer [2020-07-07 12:29:35,697 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 12:29:35,703 INFO L168 Benchmark]: Toolchain (without parser) took 51184.20 ms. Allocated memory was 144.7 MB in the beginning and 1.2 GB in the end (delta: 1.1 GB). Free memory was 100.4 MB in the beginning and 953.5 MB in the end (delta: -853.1 MB). Peak memory consumption was 221.7 MB. Max. memory is 7.1 GB. [2020-07-07 12:29:35,704 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 144.7 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 12:29:35,704 INFO L168 Benchmark]: CACSL2BoogieTranslator took 657.24 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 100.2 MB in the beginning and 170.5 MB in the end (delta: -70.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-07-07 12:29:35,705 INFO L168 Benchmark]: Boogie Preprocessor took 81.94 ms. Allocated memory is still 202.4 MB. Free memory was 170.5 MB in the beginning and 166.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-07-07 12:29:35,706 INFO L168 Benchmark]: RCFGBuilder took 1303.24 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 166.5 MB in the beginning and 176.4 MB in the end (delta: -9.9 MB). Peak memory consumption was 83.4 MB. Max. memory is 7.1 GB. [2020-07-07 12:29:35,707 INFO L168 Benchmark]: TraceAbstraction took 49137.30 ms. Allocated memory was 235.9 MB in the beginning and 1.2 GB in the end (delta: 983.6 MB). Free memory was 176.4 MB in the beginning and 953.5 MB in the end (delta: -777.1 MB). Peak memory consumption was 206.5 MB. Max. memory is 7.1 GB. [2020-07-07 12:29:35,710 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 144.7 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 657.24 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 100.2 MB in the beginning and 170.5 MB in the end (delta: -70.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 81.94 ms. Allocated memory is still 202.4 MB. Free memory was 170.5 MB in the beginning and 166.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1303.24 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 166.5 MB in the beginning and 176.4 MB in the end (delta: -9.9 MB). Peak memory consumption was 83.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 49137.30 ms. Allocated memory was 235.9 MB in the beginning and 1.2 GB in the end (delta: 983.6 MB). Free memory was 176.4 MB in the beginning and 953.5 MB in the end (delta: -777.1 MB). Peak memory consumption was 206.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 900]: 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; [L310] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L545] int cleanupTimeShifts = 4; [L651] int pumpRunning = 0; [L652] int systemActive = 1; [L905] int methAndRunningLastTime ; [L623] int retValue_acc ; [L624] int tmp ; [L628] FCALL select_helpers() [L629] FCALL select_features() [L630] CALL, EXPR valid_product() [L536] int retValue_acc ; [L539] retValue_acc = 1 [L540] return (retValue_acc); [L630] RET, EXPR valid_product() [L630] tmp = valid_product() [L632] COND TRUE \read(tmp) [L634] FCALL setup() [L635] CALL runTest() [L616] CALL __utac_acc__Specification2_spec__1() [L910] methAndRunningLastTime = 0 [L616] RET __utac_acc__Specification2_spec__1() [L617] CALL test() [L828] int splverifierCounter ; [L829] int tmp ; [L830] int tmp___0 ; [L831] int tmp___1 ; [L832] int tmp___2 ; [L835] splverifierCounter = 0 [L837] COND TRUE 1 [L839] COND TRUE splverifierCounter < 4 [L845] tmp = __VERIFIER_nondet_int() [L847] COND TRUE \read(tmp) [L849] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L849] RET waterRise() [L855] tmp___0 = __VERIFIER_nondet_int() [L857] COND TRUE \read(tmp___0) [L859] CALL changeMethaneLevel() [L77] COND FALSE !(\read(methaneLevelCritical)) [L80] methaneLevelCritical = 1 [L859] RET changeMethaneLevel() [L865] tmp___2 = __VERIFIER_nondet_int() [L867] COND TRUE \read(tmp___2) [L869] CALL startSystem() [L822] systemActive = 1 [L869] RET startSystem() [L884] 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() [L785] int retValue_acc ; [L786] int tmp ; [L787] int tmp___0 ; [L791] CALL, EXPR isHighWaterSensorDry() [L127] int retValue_acc ; [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); [L791] RET, EXPR isHighWaterSensorDry() [L791] tmp = isHighWaterSensorDry() [L793] COND FALSE !(\read(tmp)) [L796] tmp___0 = 1 [L798] retValue_acc = tmp___0 [L799] return (retValue_acc); [L693] RET, EXPR isHighWaterLevel() [L693] tmp = isHighWaterLevel() [L695] COND TRUE \read(tmp) [L697] CALL activatePump() [L716] pumpRunning = 1 [L697] RET activatePump() [L668] RET processEnvironment() [L674] CALL __utac_acc__Specification2_spec__2() [L915] int tmp ; [L916] int tmp___0 ; [L920] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L920] RET, EXPR isMethaneLevelCritical() [L920] tmp = isMethaneLevelCritical() [L922] COND TRUE \read(tmp) [L924] CALL, EXPR isPumpRunning() [L740] int retValue_acc ; [L743] retValue_acc = pumpRunning [L744] return (retValue_acc); [L924] RET, EXPR isPumpRunning() [L924] tmp___0 = isPumpRunning() [L926] COND TRUE \read(tmp___0) [L927] COND FALSE !(\read(methAndRunningLastTime)) [L932] methAndRunningLastTime = 1 [L674] RET __utac_acc__Specification2_spec__2() [L884] RET timeShift() [L837] COND TRUE 1 [L839] COND TRUE splverifierCounter < 4 [L845] tmp = __VERIFIER_nondet_int() [L847] COND FALSE !(\read(tmp)) [L855] tmp___0 = __VERIFIER_nondet_int() [L857] COND FALSE !(\read(tmp___0)) [L865] tmp___2 = __VERIFIER_nondet_int() [L867] COND TRUE \read(tmp___2) [L869] CALL startSystem() [L822] systemActive = 1 [L869] RET startSystem() [L884] 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__Specification2_spec__2() [L915] int tmp ; [L916] int tmp___0 ; [L920] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L920] RET, EXPR isMethaneLevelCritical() [L920] tmp = isMethaneLevelCritical() [L922] COND TRUE \read(tmp) [L924] CALL, EXPR isPumpRunning() [L740] int retValue_acc ; [L743] retValue_acc = pumpRunning [L744] return (retValue_acc); [L924] RET, EXPR isPumpRunning() [L924] tmp___0 = isPumpRunning() [L926] COND TRUE \read(tmp___0) [L927] COND TRUE \read(methAndRunningLastTime) [L929] CALL __automaton_fail() [L900] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 625 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 49.0s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 39.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2143 SDtfs, 7578 SDslu, 4906 SDs, 0 SdLazy, 10155 SolverSat, 2567 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 483 GetRequests, 259 SyntacticMatches, 2 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1791 ImplicationChecksByTransitivity, 14.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3376occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.9s AutomataMinimizationTime, 9 MinimizatonAttempts, 4499 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...