/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 12:39:27,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 12:39:27,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 12:39:27,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 12:39:27,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 12:39:27,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 12:39:27,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 12:39:27,220 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 12:39:27,222 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 12:39:27,223 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 12:39:27,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 12:39:27,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 12:39:27,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 12:39:27,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 12:39:27,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 12:39:27,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 12:39:27,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 12:39:27,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 12:39:27,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 12:39:27,233 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 12:39:27,234 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 12:39:27,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 12:39:27,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 12:39:27,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 12:39:27,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 12:39:27,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 12:39:27,240 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 12:39:27,241 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 12:39:27,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 12:39:27,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 12:39:27,242 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 12:39:27,243 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 12:39:27,243 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 12:39:27,244 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 12:39:27,245 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 12:39:27,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 12:39:27,246 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 12:39:27,246 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 12:39:27,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 12:39:27,247 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 12:39:27,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 12:39:27,249 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 12:39:27,258 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 12:39:27,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 12:39:27,259 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 12:39:27,259 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 12:39:27,260 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 12:39:27,260 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 12:39:27,260 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 12:39:27,260 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 12:39:27,260 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 12:39:27,261 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 12:39:27,261 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 12:39:27,261 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 12:39:27,261 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 12:39:27,261 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 12:39:27,262 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 12:39:27,262 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 12:39:27,262 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 12:39:27,262 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 12:39:27,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 12:39:27,263 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 12:39:27,263 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 12:39:27,263 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 12:39:27,263 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 12:39:27,576 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 12:39:27,588 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 12:39:27,591 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 12:39:27,593 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 12:39:27,593 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 12:39:27,594 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product46.cil.c [2020-07-07 12:39:27,664 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f342d552/8dd7fe21f7fd451bb36766ef12b93a8d/FLAG661e7800d [2020-07-07 12:39:28,179 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 12:39:28,179 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product46.cil.c [2020-07-07 12:39:28,194 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f342d552/8dd7fe21f7fd451bb36766ef12b93a8d/FLAG661e7800d [2020-07-07 12:39:28,499 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f342d552/8dd7fe21f7fd451bb36766ef12b93a8d [2020-07-07 12:39:28,510 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 12:39:28,512 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 12:39:28,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 12:39:28,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 12:39:28,519 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 12:39:28,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 12:39:28" (1/1) ... [2020-07-07 12:39:28,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dcd9b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:39:28, skipping insertion in model container [2020-07-07 12:39:28,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 12:39:28" (1/1) ... [2020-07-07 12:39:28,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 12:39:28,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 12:39:29,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 12:39:29,047 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 12:39:29,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 12:39:29,176 INFO L208 MainTranslator]: Completed translation [2020-07-07 12:39:29,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:39:29 WrapperNode [2020-07-07 12:39:29,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 12:39:29,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 12:39:29,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 12:39:29,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 12:39:29,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:39:29" (1/1) ... [2020-07-07 12:39:29,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:39:29" (1/1) ... [2020-07-07 12:39:29,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:39:29" (1/1) ... [2020-07-07 12:39:29,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:39:29" (1/1) ... [2020-07-07 12:39:29,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:39:29" (1/1) ... [2020-07-07 12:39:29,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:39:29" (1/1) ... [2020-07-07 12:39:29,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:39:29" (1/1) ... [2020-07-07 12:39:29,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 12:39:29,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 12:39:29,271 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 12:39:29,271 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 12:39:29,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:39:29" (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 12:39:29,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 12:39:29,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 12:39:29,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-07 12:39:29,344 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-07 12:39:29,344 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-07 12:39:29,344 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-07 12:39:29,344 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-07 12:39:29,344 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 12:39:29,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-07-07 12:39:29,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-07 12:39:29,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-07 12:39:29,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-07 12:39:29,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-07 12:39:29,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-07 12:39:29,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-07 12:39:29,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-07 12:39:29,345 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-07 12:39:29,346 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-07 12:39:29,346 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-07-07 12:39:29,346 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-07 12:39:29,346 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-07-07 12:39:29,346 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-07 12:39:29,347 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-07 12:39:29,347 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-07 12:39:29,347 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-07 12:39:29,347 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-07 12:39:29,347 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-07 12:39:29,347 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-07 12:39:29,347 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-07 12:39:29,348 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-07 12:39:29,348 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-07 12:39:29,348 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-07 12:39:29,348 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-07 12:39:29,348 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-07 12:39:29,348 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-07 12:39:29,349 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-07 12:39:29,349 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-07 12:39:29,349 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-07 12:39:29,349 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-07 12:39:29,349 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-07 12:39:29,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 12:39:29,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 12:39:29,350 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-07 12:39:29,350 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-07 12:39:29,350 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-07 12:39:29,350 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-07 12:39:29,350 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-07 12:39:29,351 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-07 12:39:29,351 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-07 12:39:29,351 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-07 12:39:29,351 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-07 12:39:29,351 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-07 12:39:29,351 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-07 12:39:29,352 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-07 12:39:29,352 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-07 12:39:29,352 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 12:39:29,352 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-07 12:39:29,352 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-07 12:39:29,352 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-07 12:39:29,353 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-07-07 12:39:29,353 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-07 12:39:29,353 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 12:39:29,353 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 12:39:29,353 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-07 12:39:29,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 12:39:29,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 12:39:29,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 12:39:29,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 12:39:29,354 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-07 12:39:29,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 12:39:29,354 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-07 12:39:29,355 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-07 12:39:29,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 12:39:29,355 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-07 12:39:29,355 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-07 12:39:29,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 12:39:29,355 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-07 12:39:29,356 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-07 12:39:29,356 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-07 12:39:29,356 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-07 12:39:29,356 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-07 12:39:29,356 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-07 12:39:29,356 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-07 12:39:29,357 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-07 12:39:29,357 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-07 12:39:29,357 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-07 12:39:29,357 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-07 12:39:29,357 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-07-07 12:39:29,357 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-07 12:39:29,357 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-07-07 12:39:29,358 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-07 12:39:29,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 12:39:29,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-07 12:39:29,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 12:39:30,487 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 12:39:30,488 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-07 12:39:30,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 12:39:30 BoogieIcfgContainer [2020-07-07 12:39:30,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 12:39:30,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 12:39:30,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 12:39:30,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 12:39:30,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 12:39:28" (1/3) ... [2020-07-07 12:39:30,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a62b43b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 12:39:30, skipping insertion in model container [2020-07-07 12:39:30,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:39:29" (2/3) ... [2020-07-07 12:39:30,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a62b43b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 12:39:30, skipping insertion in model container [2020-07-07 12:39:30,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 12:39:30" (3/3) ... [2020-07-07 12:39:30,503 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product46.cil.c [2020-07-07 12:39:30,513 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 12:39:30,522 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 12:39:30,536 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 12:39:30,557 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 12:39:30,557 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 12:39:30,557 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 12:39:30,557 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 12:39:30,558 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 12:39:30,558 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 12:39:30,558 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 12:39:30,558 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 12:39:30,580 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states. [2020-07-07 12:39:30,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-07-07 12:39:30,601 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:30,603 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:39:30,603 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:30,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:30,610 INFO L82 PathProgramCache]: Analyzing trace with hash 2069436890, now seen corresponding path program 1 times [2020-07-07 12:39:30,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:30,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141069315] [2020-07-07 12:39:30,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:30,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:31,264 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:31,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:31,472 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:31,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141069315] [2020-07-07 12:39:31,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:31,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 12:39:31,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766498424] [2020-07-07 12:39:31,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 12:39:31,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:31,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 12:39:31,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 12:39:31,503 INFO L87 Difference]: Start difference. First operand 319 states. Second operand 3 states. [2020-07-07 12:39:32,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:32,913 INFO L93 Difference]: Finished difference Result 506 states and 600 transitions. [2020-07-07 12:39:32,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 12:39:32,916 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-07-07 12:39:32,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:32,946 INFO L225 Difference]: With dead ends: 506 [2020-07-07 12:39:32,946 INFO L226 Difference]: Without dead ends: 312 [2020-07-07 12:39:32,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 12:39:32,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-07-07 12:39:33,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 268. [2020-07-07 12:39:33,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-07-07 12:39:33,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 291 transitions. [2020-07-07 12:39:33,142 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 291 transitions. Word has length 142 [2020-07-07 12:39:33,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:33,143 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 291 transitions. [2020-07-07 12:39:33,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 12:39:33,143 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 291 transitions. [2020-07-07 12:39:33,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-07-07 12:39:33,147 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:33,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:39:33,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 12:39:33,148 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:33,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:33,149 INFO L82 PathProgramCache]: Analyzing trace with hash 777586008, now seen corresponding path program 1 times [2020-07-07 12:39:33,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:33,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859894564] [2020-07-07 12:39:33,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:33,495 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:33,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:33,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:33,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:33,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:33,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:33,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:33,602 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:33,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859894564] [2020-07-07 12:39:33,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:33,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 12:39:33,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109737967] [2020-07-07 12:39:33,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 12:39:33,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:33,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 12:39:33,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 12:39:33,607 INFO L87 Difference]: Start difference. First operand 268 states and 291 transitions. Second operand 4 states. [2020-07-07 12:39:34,212 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:35,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:35,202 INFO L93 Difference]: Finished difference Result 419 states and 471 transitions. [2020-07-07 12:39:35,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 12:39:35,203 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-07-07 12:39:35,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:35,207 INFO L225 Difference]: With dead ends: 419 [2020-07-07 12:39:35,207 INFO L226 Difference]: Without dead ends: 295 [2020-07-07 12:39:35,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 12:39:35,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-07-07 12:39:35,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 258. [2020-07-07 12:39:35,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-07-07 12:39:35,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 278 transitions. [2020-07-07 12:39:35,290 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 278 transitions. Word has length 143 [2020-07-07 12:39:35,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:35,291 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 278 transitions. [2020-07-07 12:39:35,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 12:39:35,291 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 278 transitions. [2020-07-07 12:39:35,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-07-07 12:39:35,293 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:35,294 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] [2020-07-07 12:39:35,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 12:39:35,294 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:35,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:35,295 INFO L82 PathProgramCache]: Analyzing trace with hash -956744923, now seen corresponding path program 1 times [2020-07-07 12:39:35,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:35,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660966365] [2020-07-07 12:39:35,295 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:35,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:35,630 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:35,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:35,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:35,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:35,812 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:35,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660966365] [2020-07-07 12:39:35,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:35,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 12:39:35,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936077588] [2020-07-07 12:39:35,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 12:39:35,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:35,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 12:39:35,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-07 12:39:35,817 INFO L87 Difference]: Start difference. First operand 258 states and 278 transitions. Second operand 10 states. [2020-07-07 12:39:36,462 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:36,984 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:37,249 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-07-07 12:39:37,476 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:37,729 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:37,981 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:39,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:39,675 INFO L93 Difference]: Finished difference Result 465 states and 533 transitions. [2020-07-07 12:39:39,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 12:39:39,676 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2020-07-07 12:39:39,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:39,684 INFO L225 Difference]: With dead ends: 465 [2020-07-07 12:39:39,684 INFO L226 Difference]: Without dead ends: 317 [2020-07-07 12:39:39,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-07-07 12:39:39,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-07-07 12:39:39,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 258. [2020-07-07 12:39:39,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-07-07 12:39:39,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 277 transitions. [2020-07-07 12:39:39,774 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 277 transitions. Word has length 156 [2020-07-07 12:39:39,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:39,775 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 277 transitions. [2020-07-07 12:39:39,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 12:39:39,775 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 277 transitions. [2020-07-07 12:39:39,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-07-07 12:39:39,777 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:39,778 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] [2020-07-07 12:39:39,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 12:39:39,778 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:39,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:39,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1329661324, now seen corresponding path program 1 times [2020-07-07 12:39:39,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:39,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784783465] [2020-07-07 12:39:39,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:39,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,050 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:40,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:40,222 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:40,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784783465] [2020-07-07 12:39:40,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:40,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-07 12:39:40,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014437956] [2020-07-07 12:39:40,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 12:39:40,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:40,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 12:39:40,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-07 12:39:40,225 INFO L87 Difference]: Start difference. First operand 258 states and 277 transitions. Second operand 7 states. [2020-07-07 12:39:40,732 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:42,381 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:43,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:43,278 INFO L93 Difference]: Finished difference Result 658 states and 775 transitions. [2020-07-07 12:39:43,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-07 12:39:43,278 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 169 [2020-07-07 12:39:43,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:43,285 INFO L225 Difference]: With dead ends: 658 [2020-07-07 12:39:43,286 INFO L226 Difference]: Without dead ends: 510 [2020-07-07 12:39:43,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-07-07 12:39:43,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2020-07-07 12:39:43,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 383. [2020-07-07 12:39:43,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2020-07-07 12:39:43,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 410 transitions. [2020-07-07 12:39:43,438 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 410 transitions. Word has length 169 [2020-07-07 12:39:43,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:43,440 INFO L479 AbstractCegarLoop]: Abstraction has 383 states and 410 transitions. [2020-07-07 12:39:43,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 12:39:43,440 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 410 transitions. [2020-07-07 12:39:43,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-07-07 12:39:43,442 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:43,442 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] [2020-07-07 12:39:43,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 12:39:43,443 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:43,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:43,443 INFO L82 PathProgramCache]: Analyzing trace with hash -828711732, now seen corresponding path program 1 times [2020-07-07 12:39:43,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:43,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244130202] [2020-07-07 12:39:43,444 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:43,797 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:43,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:43,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:43,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:43,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:43,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:43,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:43,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:43,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:43,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:44,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:44,085 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:44,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244130202] [2020-07-07 12:39:44,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:44,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-07-07 12:39:44,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663390928] [2020-07-07 12:39:44,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-07 12:39:44,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:44,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-07 12:39:44,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-07-07 12:39:44,088 INFO L87 Difference]: Start difference. First operand 383 states and 410 transitions. Second operand 15 states. [2020-07-07 12:39:44,563 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:44,922 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:45,203 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:39:45,468 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:45,730 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:45,997 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:46,673 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:48,055 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:48,319 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:48,627 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:48,912 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:49,165 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:39:49,422 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:39:49,674 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:49,991 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:50,350 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:39:50,620 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:52,329 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:52,605 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:53,049 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:53,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:53,901 INFO L93 Difference]: Finished difference Result 1370 states and 1704 transitions. [2020-07-07 12:39:53,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-07-07 12:39:53,902 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 193 [2020-07-07 12:39:53,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:53,909 INFO L225 Difference]: With dead ends: 1370 [2020-07-07 12:39:53,910 INFO L226 Difference]: Without dead ends: 1097 [2020-07-07 12:39:53,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=386, Invalid=1336, Unknown=0, NotChecked=0, Total=1722 [2020-07-07 12:39:53,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2020-07-07 12:39:54,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 798. [2020-07-07 12:39:54,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 798 states. [2020-07-07 12:39:54,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 880 transitions. [2020-07-07 12:39:54,213 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 880 transitions. Word has length 193 [2020-07-07 12:39:54,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:54,213 INFO L479 AbstractCegarLoop]: Abstraction has 798 states and 880 transitions. [2020-07-07 12:39:54,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-07 12:39:54,214 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 880 transitions. [2020-07-07 12:39:54,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-07-07 12:39:54,221 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:54,222 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:39:54,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 12:39:54,223 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:54,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:54,223 INFO L82 PathProgramCache]: Analyzing trace with hash -186305432, now seen corresponding path program 1 times [2020-07-07 12:39:54,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:54,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943613083] [2020-07-07 12:39:54,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:54,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:54,628 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:54,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:54,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:54,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:54,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:54,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:54,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:54,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:54,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:54,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:54,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:55,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:55,015 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:55,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943613083] [2020-07-07 12:39:55,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:55,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-07-07 12:39:55,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444162993] [2020-07-07 12:39:55,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-07 12:39:55,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:55,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-07 12:39:55,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-07-07 12:39:55,018 INFO L87 Difference]: Start difference. First operand 798 states and 880 transitions. Second operand 15 states. [2020-07-07 12:39:55,577 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:56,316 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:57,134 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:57,412 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:39:57,687 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-07-07 12:39:57,972 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:58,248 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:58,531 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:39:58,778 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:39:59,041 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-07-07 12:39:59,271 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:59,535 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:59,815 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:40:00,094 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:40:02,909 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:40:03,155 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:40:03,412 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-07-07 12:40:03,659 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:40:03,910 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:40:04,134 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:40:05,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:40:05,172 INFO L93 Difference]: Finished difference Result 1793 states and 2205 transitions. [2020-07-07 12:40:05,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-07-07 12:40:05,172 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 291 [2020-07-07 12:40:05,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:40:05,180 INFO L225 Difference]: With dead ends: 1793 [2020-07-07 12:40:05,180 INFO L226 Difference]: Without dead ends: 1105 [2020-07-07 12:40:05,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=497, Invalid=2053, Unknown=0, NotChecked=0, Total=2550 [2020-07-07 12:40:05,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2020-07-07 12:40:05,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 765. [2020-07-07 12:40:05,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 765 states. [2020-07-07 12:40:05,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 846 transitions. [2020-07-07 12:40:05,493 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 846 transitions. Word has length 291 [2020-07-07 12:40:05,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:40:05,494 INFO L479 AbstractCegarLoop]: Abstraction has 765 states and 846 transitions. [2020-07-07 12:40:05,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-07 12:40:05,494 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 846 transitions. [2020-07-07 12:40:05,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-07-07 12:40:05,499 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:40:05,499 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:40:05,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 12:40:05,500 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:40:05,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:40:05,500 INFO L82 PathProgramCache]: Analyzing trace with hash -144483530, now seen corresponding path program 1 times [2020-07-07 12:40:05,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:40:05,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537703655] [2020-07-07 12:40:05,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:40:05,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:05,852 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:40:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:05,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:05,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:05,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:06,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:06,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:06,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:06,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:06,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:06,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:06,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:06,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:06,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:06,172 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 12:40:06,172 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:40:06,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537703655] [2020-07-07 12:40:06,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:40:06,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-07-07 12:40:06,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382128275] [2020-07-07 12:40:06,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-07 12:40:06,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:40:06,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-07 12:40:06,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-07-07 12:40:06,175 INFO L87 Difference]: Start difference. First operand 765 states and 846 transitions. Second operand 15 states. [2020-07-07 12:40:06,710 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:40:06,975 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:40:07,209 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:40:07,450 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:40:07,670 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:40:08,551 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:40:08,775 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:40:09,022 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:40:09,273 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:40:09,500 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:40:11,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:40:11,134 INFO L93 Difference]: Finished difference Result 1435 states and 1684 transitions. [2020-07-07 12:40:11,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-07 12:40:11,134 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 286 [2020-07-07 12:40:11,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:40:11,139 INFO L225 Difference]: With dead ends: 1435 [2020-07-07 12:40:11,139 INFO L226 Difference]: Without dead ends: 780 [2020-07-07 12:40:11,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-07-07 12:40:11,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2020-07-07 12:40:11,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 604. [2020-07-07 12:40:11,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 604 states. [2020-07-07 12:40:11,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 666 transitions. [2020-07-07 12:40:11,296 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 666 transitions. Word has length 286 [2020-07-07 12:40:11,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:40:11,297 INFO L479 AbstractCegarLoop]: Abstraction has 604 states and 666 transitions. [2020-07-07 12:40:11,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-07 12:40:11,297 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 666 transitions. [2020-07-07 12:40:11,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-07-07 12:40:11,302 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:40:11,302 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:40:11,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 12:40:11,302 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:40:11,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:40:11,303 INFO L82 PathProgramCache]: Analyzing trace with hash -918819029, now seen corresponding path program 1 times [2020-07-07 12:40:11,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:40:11,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319186216] [2020-07-07 12:40:11,304 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:40:11,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:11,583 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:40:11,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:11,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:11,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:11,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:11,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:11,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:11,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:11,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:11,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:11,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:11,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:11,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:11,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:11,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:11,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:11,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:11,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:11,932 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 12:40:11,932 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:40:11,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319186216] [2020-07-07 12:40:11,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:40:11,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-07-07 12:40:11,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923196353] [2020-07-07 12:40:11,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-07 12:40:11,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:40:11,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-07 12:40:11,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-07-07 12:40:11,935 INFO L87 Difference]: Start difference. First operand 604 states and 666 transitions. Second operand 16 states. [2020-07-07 12:40:12,432 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:40:13,369 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:40:14,685 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:40:14,969 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:40:15,272 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:40:15,564 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:40:15,801 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:40:16,064 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:40:16,293 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:40:16,560 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:40:16,826 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:40:17,171 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:40:17,431 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:40:17,696 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:40:19,483 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:40:19,728 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:40:20,000 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:40:20,264 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:40:20,524 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:40:20,775 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:40:21,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:40:21,768 INFO L93 Difference]: Finished difference Result 1828 states and 2180 transitions. [2020-07-07 12:40:21,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-07-07 12:40:21,769 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 291 [2020-07-07 12:40:21,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:40:21,777 INFO L225 Difference]: With dead ends: 1828 [2020-07-07 12:40:21,777 INFO L226 Difference]: Without dead ends: 1334 [2020-07-07 12:40:21,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=521, Invalid=2029, Unknown=0, NotChecked=0, Total=2550 [2020-07-07 12:40:21,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2020-07-07 12:40:22,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1013. [2020-07-07 12:40:22,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1013 states. [2020-07-07 12:40:22,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1113 transitions. [2020-07-07 12:40:22,129 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1113 transitions. Word has length 291 [2020-07-07 12:40:22,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:40:22,130 INFO L479 AbstractCegarLoop]: Abstraction has 1013 states and 1113 transitions. [2020-07-07 12:40:22,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-07 12:40:22,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1113 transitions. [2020-07-07 12:40:22,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-07-07 12:40:22,133 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:40:22,133 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:40:22,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 12:40:22,134 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:40:22,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:40:22,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1502734052, now seen corresponding path program 1 times [2020-07-07 12:40:22,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:40:22,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254632752] [2020-07-07 12:40:22,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:40:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:22,430 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:40:22,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:22,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:22,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:22,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:22,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:22,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:22,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:22,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:22,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:22,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:22,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:22,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:22,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:22,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:22,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:22,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:22,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:22,714 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 12:40:22,714 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:40:22,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254632752] [2020-07-07 12:40:22,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:40:22,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 12:40:22,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419638103] [2020-07-07 12:40:22,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 12:40:22,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:40:22,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 12:40:22,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-07-07 12:40:22,717 INFO L87 Difference]: Start difference. First operand 1013 states and 1113 transitions. Second operand 14 states. [2020-07-07 12:40:23,152 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:40:23,798 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:40:24,920 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:40:25,158 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:40:25,424 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:40:25,664 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:40:25,905 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:40:26,153 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:40:26,398 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:40:26,665 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:40:26,963 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:40:27,218 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:40:29,036 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:40:29,252 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:40:30,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:40:30,319 INFO L93 Difference]: Finished difference Result 2794 states and 3421 transitions. [2020-07-07 12:40:30,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-07-07 12:40:30,320 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 295 [2020-07-07 12:40:30,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:40:30,332 INFO L225 Difference]: With dead ends: 2794 [2020-07-07 12:40:30,332 INFO L226 Difference]: Without dead ends: 2069 [2020-07-07 12:40:30,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 67 SyntacticMatches, 6 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=577, Invalid=1493, Unknown=0, NotChecked=0, Total=2070 [2020-07-07 12:40:30,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2020-07-07 12:40:30,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1329. [2020-07-07 12:40:30,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1329 states. [2020-07-07 12:40:30,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 1478 transitions. [2020-07-07 12:40:30,961 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 1478 transitions. Word has length 295 [2020-07-07 12:40:30,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:40:30,965 INFO L479 AbstractCegarLoop]: Abstraction has 1329 states and 1478 transitions. [2020-07-07 12:40:30,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 12:40:30,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 1478 transitions. [2020-07-07 12:40:30,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-07-07 12:40:30,979 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:40:30,979 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:40:30,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 12:40:30,979 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:40:30,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:40:30,980 INFO L82 PathProgramCache]: Analyzing trace with hash 594951917, now seen corresponding path program 2 times [2020-07-07 12:40:30,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:40:30,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221217883] [2020-07-07 12:40:30,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:40:31,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 12:40:31,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 12:40:32,002 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:40:32,003 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 12:40:32,003 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 12:40:32,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-07 12:40:32,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 12:40:32 BoogieIcfgContainer [2020-07-07 12:40:32,072 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 12:40:32,075 INFO L168 Benchmark]: Toolchain (without parser) took 63561.93 ms. Allocated memory was 143.1 MB in the beginning and 981.5 MB in the end (delta: 838.3 MB). Free memory was 100.5 MB in the beginning and 261.1 MB in the end (delta: -160.6 MB). Peak memory consumption was 677.7 MB. Max. memory is 7.1 GB. [2020-07-07 12:40:32,078 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 143.1 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 12:40:32,079 INFO L168 Benchmark]: CACSL2BoogieTranslator took 662.78 ms. Allocated memory was 143.1 MB in the beginning and 198.7 MB in the end (delta: 55.6 MB). Free memory was 100.3 MB in the beginning and 166.4 MB in the end (delta: -66.1 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-07-07 12:40:32,087 INFO L168 Benchmark]: Boogie Preprocessor took 92.05 ms. Allocated memory is still 198.7 MB. Free memory was 166.4 MB in the beginning and 162.1 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-07-07 12:40:32,088 INFO L168 Benchmark]: RCFGBuilder took 1224.08 ms. Allocated memory was 198.7 MB in the beginning and 227.5 MB in the end (delta: 28.8 MB). Free memory was 162.1 MB in the beginning and 170.5 MB in the end (delta: -8.4 MB). Peak memory consumption was 87.6 MB. Max. memory is 7.1 GB. [2020-07-07 12:40:32,090 INFO L168 Benchmark]: TraceAbstraction took 61576.32 ms. Allocated memory was 227.5 MB in the beginning and 981.5 MB in the end (delta: 753.9 MB). Free memory was 170.5 MB in the beginning and 261.1 MB in the end (delta: -90.6 MB). Peak memory consumption was 663.4 MB. Max. memory is 7.1 GB. [2020-07-07 12:40:32,099 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 143.1 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 662.78 ms. Allocated memory was 143.1 MB in the beginning and 198.7 MB in the end (delta: 55.6 MB). Free memory was 100.3 MB in the beginning and 166.4 MB in the end (delta: -66.1 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.05 ms. Allocated memory is still 198.7 MB. Free memory was 166.4 MB in the beginning and 162.1 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1224.08 ms. Allocated memory was 198.7 MB in the beginning and 227.5 MB in the end (delta: 28.8 MB). Free memory was 162.1 MB in the beginning and 170.5 MB in the end (delta: -8.4 MB). Peak memory consumption was 87.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 61576.32 ms. Allocated memory was 227.5 MB in the beginning and 981.5 MB in the end (delta: 753.9 MB). Free memory was 170.5 MB in the beginning and 261.1 MB in the end (delta: -90.6 MB). Peak memory consumption was 663.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 543]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L342] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L555] int pumpRunning = 0; [L556] int systemActive = 1; [L758] int waterLevel = 1; [L759] int methaneLevelCritical = 0; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L945] int retValue_acc ; [L948] retValue_acc = 1 [L949] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L853] int splverifierCounter ; [L854] int tmp ; [L855] int tmp___0 ; [L856] int tmp___1 ; [L857] int tmp___2 ; [L860] splverifierCounter = 0 [L862] COND TRUE 1 [L864] COND TRUE splverifierCounter < 4 [L870] tmp = __VERIFIER_nondet_int() [L872] COND TRUE \read(tmp) [L874] CALL waterRise() [L776] COND TRUE waterLevel < 2 [L777] waterLevel = waterLevel + 1 [L874] RET waterRise() [L880] tmp___0 = __VERIFIER_nondet_int() [L882] COND FALSE !(\read(tmp___0)) [L890] tmp___2 = __VERIFIER_nondet_int() [L892] COND TRUE \read(tmp___2) [L894] CALL startSystem() [L753] systemActive = 1 [L894] RET startSystem() [L907] CALL timeShift() [L562] COND FALSE !(\read(pumpRunning)) [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L617] int tmp ; [L620] COND FALSE !(\read(pumpRunning)) [L635] CALL processEnvironment__wrappee__methaneQuery() [L591] int tmp ; [L594] COND TRUE ! pumpRunning [L596] CALL, EXPR isHighWaterLevel() [L731] int retValue_acc ; [L732] int tmp ; [L733] int tmp___0 ; [L737] CALL, EXPR isHighWaterSensorDry() [L838] int retValue_acc ; [L841] COND FALSE !(waterLevel < 2) [L845] retValue_acc = 0 [L846] return (retValue_acc); [L737] RET, EXPR isHighWaterSensorDry() [L737] tmp = isHighWaterSensorDry() [L739] COND FALSE !(\read(tmp)) [L742] tmp___0 = 1 [L744] retValue_acc = tmp___0 [L745] return (retValue_acc); [L596] RET, EXPR isHighWaterLevel() [L596] tmp = isHighWaterLevel() [L598] COND TRUE \read(tmp) [L600] CALL activatePump() [L650] int tmp ; [L654] CALL, EXPR isMethaneAlarm() [L675] int retValue_acc ; [L679] CALL, EXPR isMethaneLevelCritical() [L797] int retValue_acc ; [L800] retValue_acc = methaneLevelCritical [L801] return (retValue_acc); [L679] RET, EXPR isMethaneLevelCritical() [L679] retValue_acc = isMethaneLevelCritical() [L681] return (retValue_acc); [L654] RET, EXPR isMethaneAlarm() [L654] tmp = isMethaneAlarm() [L656] COND FALSE !(\read(tmp)) [L660] CALL activatePump__wrappee__highWaterSensor() [L645] pumpRunning = 1 [L660] RET activatePump__wrappee__highWaterSensor() [L600] RET activatePump() [L635] RET processEnvironment__wrappee__methaneQuery() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L148] int tmp ; [L149] int tmp___0 ; [L153] CALL, EXPR getWaterLevel() [L829] int retValue_acc ; [L832] retValue_acc = waterLevel [L833] return (retValue_acc); [L153] RET, EXPR getWaterLevel() [L153] tmp = getWaterLevel() [L155] COND FALSE !(tmp == 0) [L577] RET __utac_acc__Specification4_spec__1() [L907] RET timeShift() [L862] COND TRUE 1 [L864] COND TRUE splverifierCounter < 4 [L870] tmp = __VERIFIER_nondet_int() [L872] COND FALSE !(\read(tmp)) [L880] tmp___0 = __VERIFIER_nondet_int() [L882] COND FALSE !(\read(tmp___0)) [L890] tmp___2 = __VERIFIER_nondet_int() [L892] COND TRUE \read(tmp___2) [L894] CALL startSystem() [L753] systemActive = 1 [L894] RET startSystem() [L907] CALL timeShift() [L562] COND TRUE \read(pumpRunning) [L564] CALL lowerWaterLevel() [L764] COND TRUE waterLevel > 0 [L765] waterLevel = waterLevel - 1 [L564] RET lowerWaterLevel() [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L617] int tmp ; [L620] COND TRUE \read(pumpRunning) [L622] CALL, EXPR isMethaneAlarm() [L675] int retValue_acc ; [L679] CALL, EXPR isMethaneLevelCritical() [L797] int retValue_acc ; [L800] retValue_acc = methaneLevelCritical [L801] return (retValue_acc); [L679] RET, EXPR isMethaneLevelCritical() [L679] retValue_acc = isMethaneLevelCritical() [L681] return (retValue_acc); [L622] RET, EXPR isMethaneAlarm() [L622] tmp = isMethaneAlarm() [L624] COND FALSE !(\read(tmp)) [L630] CALL processEnvironment__wrappee__methaneQuery() [L591] int tmp ; [L594] COND FALSE !(! pumpRunning) [L609] FCALL processEnvironment__wrappee__base() [L630] RET processEnvironment__wrappee__methaneQuery() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L148] int tmp ; [L149] int tmp___0 ; [L153] CALL, EXPR getWaterLevel() [L829] int retValue_acc ; [L832] retValue_acc = waterLevel [L833] return (retValue_acc); [L153] RET, EXPR getWaterLevel() [L153] tmp = getWaterLevel() [L155] COND FALSE !(tmp == 0) [L577] RET __utac_acc__Specification4_spec__1() [L907] RET timeShift() [L862] COND TRUE 1 [L864] COND TRUE splverifierCounter < 4 [L870] tmp = __VERIFIER_nondet_int() [L872] COND FALSE !(\read(tmp)) [L880] tmp___0 = __VERIFIER_nondet_int() [L882] COND FALSE !(\read(tmp___0)) [L890] tmp___2 = __VERIFIER_nondet_int() [L892] COND TRUE \read(tmp___2) [L894] CALL startSystem() [L753] systemActive = 1 [L894] RET startSystem() [L907] CALL timeShift() [L562] COND TRUE \read(pumpRunning) [L564] CALL lowerWaterLevel() [L764] COND TRUE waterLevel > 0 [L765] waterLevel = waterLevel - 1 [L564] RET lowerWaterLevel() [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L617] int tmp ; [L620] COND TRUE \read(pumpRunning) [L622] CALL, EXPR isMethaneAlarm() [L675] int retValue_acc ; [L679] CALL, EXPR isMethaneLevelCritical() [L797] int retValue_acc ; [L800] retValue_acc = methaneLevelCritical [L801] return (retValue_acc); [L679] RET, EXPR isMethaneLevelCritical() [L679] retValue_acc = isMethaneLevelCritical() [L681] return (retValue_acc); [L622] RET, EXPR isMethaneAlarm() [L622] tmp = isMethaneAlarm() [L624] COND FALSE !(\read(tmp)) [L630] CALL processEnvironment__wrappee__methaneQuery() [L591] int tmp ; [L594] COND FALSE !(! pumpRunning) [L609] FCALL processEnvironment__wrappee__base() [L630] RET processEnvironment__wrappee__methaneQuery() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L148] int tmp ; [L149] int tmp___0 ; [L153] CALL, EXPR getWaterLevel() [L829] int retValue_acc ; [L832] retValue_acc = waterLevel [L833] return (retValue_acc); [L153] RET, EXPR getWaterLevel() [L153] tmp = getWaterLevel() [L155] COND TRUE tmp == 0 [L157] CALL, EXPR isPumpRunning() [L686] int retValue_acc ; [L689] retValue_acc = pumpRunning [L690] return (retValue_acc); [L157] RET, EXPR isPumpRunning() [L157] tmp___0 = isPumpRunning() [L159] COND TRUE \read(tmp___0) [L161] CALL __automaton_fail() [L543] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 631 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 61.4s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 52.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2503 SDtfs, 7668 SDslu, 6463 SDs, 0 SdLazy, 15925 SolverSat, 2714 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 21.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 609 GetRequests, 362 SyntacticMatches, 7 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2284 ImplicationChecksByTransitivity, 25.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1329occurred 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: 2.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 2143 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...