/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 15:11:14,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 15:11:14,149 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 15:11:14,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 15:11:14,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 15:11:14,175 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 15:11:14,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 15:11:14,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 15:11:14,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 15:11:14,181 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 15:11:14,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 15:11:14,183 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 15:11:14,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 15:11:14,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 15:11:14,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 15:11:14,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 15:11:14,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 15:11:14,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 15:11:14,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 15:11:14,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 15:11:14,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 15:11:14,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 15:11:14,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 15:11:14,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 15:11:14,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 15:11:14,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 15:11:14,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 15:11:14,202 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 15:11:14,202 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 15:11:14,203 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 15:11:14,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 15:11:14,204 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 15:11:14,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 15:11:14,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 15:11:14,207 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 15:11:14,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 15:11:14,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 15:11:14,215 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 15:11:14,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 15:11:14,216 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 15:11:14,217 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 15:11:14,218 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 15:11:14,229 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 15:11:14,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 15:11:14,231 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 15:11:14,231 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 15:11:14,231 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 15:11:14,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 15:11:14,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 15:11:14,232 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 15:11:14,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 15:11:14,232 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 15:11:14,232 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 15:11:14,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 15:11:14,233 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 15:11:14,233 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 15:11:14,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 15:11:14,233 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 15:11:14,233 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 15:11:14,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 15:11:14,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:11:14,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 15:11:14,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 15:11:14,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 15:11:14,235 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 15:11:14,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 15:11:14,709 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 15:11:14,713 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 15:11:14,715 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 15:11:14,716 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 15:11:14,717 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product34.cil.c [2020-09-04 15:11:14,805 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8e222f97/350aca77947947018c12b3288aa6c55f/FLAG1e34349bc [2020-09-04 15:11:15,437 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 15:11:15,441 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product34.cil.c [2020-09-04 15:11:15,467 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8e222f97/350aca77947947018c12b3288aa6c55f/FLAG1e34349bc [2020-09-04 15:11:15,676 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8e222f97/350aca77947947018c12b3288aa6c55f [2020-09-04 15:11:15,687 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 15:11:15,690 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 15:11:15,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 15:11:15,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 15:11:15,695 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 15:11:15,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:11:15" (1/1) ... [2020-09-04 15:11:15,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d085505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:11:15, skipping insertion in model container [2020-09-04 15:11:15,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:11:15" (1/1) ... [2020-09-04 15:11:15,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 15:11:15,758 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 15:11:16,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:11:16,122 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 15:11:16,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:11:16,337 INFO L208 MainTranslator]: Completed translation [2020-09-04 15:11:16,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:11:16 WrapperNode [2020-09-04 15:11:16,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 15:11:16,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 15:11:16,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 15:11:16,339 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 15:11:16,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:11:16" (1/1) ... [2020-09-04 15:11:16,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:11:16" (1/1) ... [2020-09-04 15:11:16,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:11:16" (1/1) ... [2020-09-04 15:11:16,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:11:16" (1/1) ... [2020-09-04 15:11:16,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:11:16" (1/1) ... [2020-09-04 15:11:16,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:11:16" (1/1) ... [2020-09-04 15:11:16,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:11:16" (1/1) ... [2020-09-04 15:11:16,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 15:11:16,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 15:11:16,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 15:11:16,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 15:11:16,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:11:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 15:11:16,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 15:11:16,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 15:11:16,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 15:11:16,539 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 15:11:16,539 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 15:11:16,540 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 15:11:16,540 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 15:11:16,540 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 15:11:16,540 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 15:11:16,540 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 15:11:16,540 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 15:11:16,541 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 15:11:16,541 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 15:11:16,541 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 15:11:16,541 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-04 15:11:16,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 15:11:16,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-09-04 15:11:16,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-09-04 15:11:16,542 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 15:11:16,542 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 15:11:16,543 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 15:11:16,543 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 15:11:16,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 15:11:16,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 15:11:16,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 15:11:16,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 15:11:16,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 15:11:16,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 15:11:16,544 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 15:11:16,544 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 15:11:16,544 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 15:11:16,548 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 15:11:16,548 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 15:11:16,548 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 15:11:16,548 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 15:11:16,548 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 15:11:16,548 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 15:11:16,549 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-04 15:11:16,549 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-04 15:11:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 15:11:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 15:11:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 15:11:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 15:11:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 15:11:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 15:11:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 15:11:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 15:11:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 15:11:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 15:11:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-09-04 15:11:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 15:11:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 15:11:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 15:11:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 15:11:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 15:11:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 15:11:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 15:11:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 15:11:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 15:11:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 15:11:16,552 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-04 15:11:16,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 15:11:16,552 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 15:11:16,552 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 15:11:16,552 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-09-04 15:11:16,552 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 15:11:16,552 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 15:11:16,553 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 15:11:16,553 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 15:11:16,553 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 15:11:16,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 15:11:16,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 15:11:16,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 15:11:16,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 15:11:16,554 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 15:11:16,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 15:11:16,554 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 15:11:16,554 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 15:11:16,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 15:11:16,554 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 15:11:16,555 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 15:11:16,555 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 15:11:16,555 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-04 15:11:16,555 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 15:11:16,555 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 15:11:16,555 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 15:11:16,556 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 15:11:16,556 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-04 15:11:16,556 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 15:11:16,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 15:11:16,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 15:11:16,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 15:11:17,641 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 15:11:17,641 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 15:11:17,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:11:17 BoogieIcfgContainer [2020-09-04 15:11:17,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 15:11:17,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 15:11:17,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 15:11:17,653 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 15:11:17,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 03:11:15" (1/3) ... [2020-09-04 15:11:17,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@261bc7da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:11:17, skipping insertion in model container [2020-09-04 15:11:17,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:11:16" (2/3) ... [2020-09-04 15:11:17,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@261bc7da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:11:17, skipping insertion in model container [2020-09-04 15:11:17,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:11:17" (3/3) ... [2020-09-04 15:11:17,657 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product34.cil.c [2020-09-04 15:11:17,668 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 15:11:17,678 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 15:11:17,698 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 15:11:17,722 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 15:11:17,722 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 15:11:17,722 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 15:11:17,723 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 15:11:17,723 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 15:11:17,723 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 15:11:17,723 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 15:11:17,723 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 15:11:17,744 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states. [2020-09-04 15:11:17,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-04 15:11:17,765 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:11:17,767 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:11:17,767 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:11:17,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:11:17,773 INFO L82 PathProgramCache]: Analyzing trace with hash 2110285638, now seen corresponding path program 1 times [2020-09-04 15:11:17,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:11:17,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364633] [2020-09-04 15:11:17,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:11:17,857 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:11:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:18,543 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:11:18,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:11:18,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:18,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:11:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:18,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:11:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:18,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:11:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:18,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:11:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:18,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:11:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:18,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 15:11:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:18,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-04 15:11:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:18,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:11:18,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364633] [2020-09-04 15:11:18,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:11:18,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 15:11:18,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358094073] [2020-09-04 15:11:18,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 15:11:18,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:11:18,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 15:11:18,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:11:18,857 INFO L87 Difference]: Start difference. First operand 297 states. Second operand 4 states. [2020-09-04 15:11:20,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:11:20,105 INFO L93 Difference]: Finished difference Result 442 states and 524 transitions. [2020-09-04 15:11:20,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 15:11:20,107 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-09-04 15:11:20,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:11:20,126 INFO L225 Difference]: With dead ends: 442 [2020-09-04 15:11:20,127 INFO L226 Difference]: Without dead ends: 287 [2020-09-04 15:11:20,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:11:20,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-09-04 15:11:20,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 240. [2020-09-04 15:11:20,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-09-04 15:11:20,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 259 transitions. [2020-09-04 15:11:20,277 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 259 transitions. Word has length 148 [2020-09-04 15:11:20,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:11:20,278 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 259 transitions. [2020-09-04 15:11:20,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 15:11:20,279 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 259 transitions. [2020-09-04 15:11:20,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-04 15:11:20,283 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:11:20,284 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:11:20,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 15:11:20,284 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:11:20,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:11:20,285 INFO L82 PathProgramCache]: Analyzing trace with hash 16536712, now seen corresponding path program 1 times [2020-09-04 15:11:20,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:11:20,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733167668] [2020-09-04 15:11:20,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:11:20,288 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:11:20,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:20,653 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:11:20,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:11:20,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:20,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:11:20,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:20,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:11:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:20,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:11:20,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:20,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:11:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:20,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:11:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:20,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-04 15:11:20,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:20,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 15:11:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:20,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:11:20,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733167668] [2020-09-04 15:11:20,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:11:20,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 15:11:20,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777030708] [2020-09-04 15:11:20,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 15:11:20,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:11:20,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 15:11:20,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 15:11:20,760 INFO L87 Difference]: Start difference. First operand 240 states and 259 transitions. Second operand 5 states. [2020-09-04 15:11:21,444 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:11:22,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:11:22,292 INFO L93 Difference]: Finished difference Result 367 states and 415 transitions. [2020-09-04 15:11:22,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 15:11:22,294 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-09-04 15:11:22,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:11:22,299 INFO L225 Difference]: With dead ends: 367 [2020-09-04 15:11:22,299 INFO L226 Difference]: Without dead ends: 276 [2020-09-04 15:11:22,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-04 15:11:22,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-09-04 15:11:22,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 230. [2020-09-04 15:11:22,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-09-04 15:11:22,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 246 transitions. [2020-09-04 15:11:22,364 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 246 transitions. Word has length 149 [2020-09-04 15:11:22,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:11:22,365 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 246 transitions. [2020-09-04 15:11:22,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 15:11:22,365 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 246 transitions. [2020-09-04 15:11:22,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-04 15:11:22,367 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:11:22,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:11:22,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 15:11:22,368 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:11:22,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:11:22,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1541802730, now seen corresponding path program 1 times [2020-09-04 15:11:22,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:11:22,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111224440] [2020-09-04 15:11:22,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:11:22,372 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:11:22,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:22,790 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:11:22,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:11:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:22,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:11:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:22,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:11:22,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:22,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:11:22,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:22,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:11:22,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:22,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:11:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:22,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:11:22,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:22,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-04 15:11:22,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:22,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-04 15:11:22,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:22,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:11:22,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111224440] [2020-09-04 15:11:22,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:11:22,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 15:11:22,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711393587] [2020-09-04 15:11:22,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 15:11:22,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:11:22,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 15:11:22,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:11:22,992 INFO L87 Difference]: Start difference. First operand 230 states and 246 transitions. Second operand 11 states. [2020-09-04 15:11:23,525 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:11:23,909 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:11:24,242 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-04 15:11:24,568 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:11:24,890 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:11:25,202 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:11:26,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:11:26,810 INFO L93 Difference]: Finished difference Result 414 states and 480 transitions. [2020-09-04 15:11:26,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 15:11:26,813 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 162 [2020-09-04 15:11:26,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:11:26,817 INFO L225 Difference]: With dead ends: 414 [2020-09-04 15:11:26,817 INFO L226 Difference]: Without dead ends: 299 [2020-09-04 15:11:26,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2020-09-04 15:11:26,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-09-04 15:11:26,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 230. [2020-09-04 15:11:26,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-09-04 15:11:26,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 245 transitions. [2020-09-04 15:11:26,905 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 245 transitions. Word has length 162 [2020-09-04 15:11:26,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:11:26,906 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 245 transitions. [2020-09-04 15:11:26,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 15:11:26,906 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 245 transitions. [2020-09-04 15:11:26,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-04 15:11:26,908 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:11:26,909 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] [2020-09-04 15:11:26,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 15:11:26,909 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:11:26,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:11:26,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1425032231, now seen corresponding path program 1 times [2020-09-04 15:11:26,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:11:26,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433365216] [2020-09-04 15:11:26,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:11:26,913 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:11:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:27,328 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:11:27,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:11:27,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:27,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:11:27,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:27,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:11:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:27,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:11:27,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:27,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:11:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:27,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:11:27,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:27,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:11:27,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:27,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 15:11:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:27,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:11:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:27,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-09-04 15:11:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:27,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-09-04 15:11:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:27,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:11:27,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433365216] [2020-09-04 15:11:27,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:11:27,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 15:11:27,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100764125] [2020-09-04 15:11:27,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 15:11:27,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:11:27,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 15:11:27,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-04 15:11:27,590 INFO L87 Difference]: Start difference. First operand 230 states and 245 transitions. Second operand 8 states. [2020-09-04 15:11:28,157 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:11:29,915 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:11:30,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:11:30,695 INFO L93 Difference]: Finished difference Result 593 states and 710 transitions. [2020-09-04 15:11:30,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-04 15:11:30,696 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 170 [2020-09-04 15:11:30,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:11:30,701 INFO L225 Difference]: With dead ends: 593 [2020-09-04 15:11:30,701 INFO L226 Difference]: Without dead ends: 478 [2020-09-04 15:11:30,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2020-09-04 15:11:30,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2020-09-04 15:11:30,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 337. [2020-09-04 15:11:30,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-09-04 15:11:30,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 364 transitions. [2020-09-04 15:11:30,835 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 364 transitions. Word has length 170 [2020-09-04 15:11:30,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:11:30,836 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 364 transitions. [2020-09-04 15:11:30,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 15:11:30,836 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 364 transitions. [2020-09-04 15:11:30,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-04 15:11:30,839 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:11:30,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:11:30,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 15:11:30,840 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:11:30,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:11:30,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1572233247, now seen corresponding path program 1 times [2020-09-04 15:11:30,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:11:30,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655800760] [2020-09-04 15:11:30,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:11:30,844 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:11:30,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:31,304 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:11:31,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:11:31,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:31,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:11:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:31,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:11:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:31,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:11:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:31,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:11:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:31,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:11:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:31,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:11:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:31,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 15:11:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:31,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:11:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:31,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:11:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:31,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:11:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:31,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-09-04 15:11:31,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:31,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-09-04 15:11:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:31,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:11:31,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655800760] [2020-09-04 15:11:31,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:11:31,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 15:11:31,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155900610] [2020-09-04 15:11:31,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 15:11:31,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:11:31,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 15:11:31,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:11:31,596 INFO L87 Difference]: Start difference. First operand 337 states and 364 transitions. Second operand 11 states. [2020-09-04 15:11:32,429 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:11:34,038 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:11:34,377 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:11:34,709 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:11:35,010 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:11:35,316 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:11:35,613 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:11:35,920 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:11:36,330 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:11:37,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:11:37,895 INFO L93 Difference]: Finished difference Result 984 states and 1211 transitions. [2020-09-04 15:11:37,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-04 15:11:37,896 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 194 [2020-09-04 15:11:37,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:11:37,901 INFO L225 Difference]: With dead ends: 984 [2020-09-04 15:11:37,902 INFO L226 Difference]: Without dead ends: 762 [2020-09-04 15:11:37,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=270, Invalid=722, Unknown=0, NotChecked=0, Total=992 [2020-09-04 15:11:37,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2020-09-04 15:11:38,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 513. [2020-09-04 15:11:38,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-09-04 15:11:38,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 559 transitions. [2020-09-04 15:11:38,066 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 559 transitions. Word has length 194 [2020-09-04 15:11:38,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:11:38,067 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 559 transitions. [2020-09-04 15:11:38,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 15:11:38,067 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 559 transitions. [2020-09-04 15:11:38,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-04 15:11:38,070 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:11:38,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:11:38,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 15:11:38,070 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:11:38,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:11:38,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1795239893, now seen corresponding path program 1 times [2020-09-04 15:11:38,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:11:38,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899944625] [2020-09-04 15:11:38,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:11:38,074 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:11:38,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:38,455 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:11:38,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:11:38,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:38,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:11:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:38,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:11:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:38,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:11:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:38,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:11:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:38,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:11:38,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:38,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 15:11:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:38,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 15:11:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:38,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-04 15:11:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:38,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:11:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:38,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:11:38,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:38,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:11:38,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:38,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-09-04 15:11:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:38,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-09-04 15:11:38,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:38,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:11:38,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899944625] [2020-09-04 15:11:38,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:11:38,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-04 15:11:38,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212653141] [2020-09-04 15:11:38,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 15:11:38,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:11:38,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 15:11:38,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-04 15:11:38,663 INFO L87 Difference]: Start difference. First operand 513 states and 559 transitions. Second operand 12 states. [2020-09-04 15:11:39,260 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:11:41,049 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:11:41,349 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:11:41,656 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:11:41,965 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:11:42,395 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:11:42,750 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:11:43,066 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:11:43,412 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:11:45,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:11:45,177 INFO L93 Difference]: Finished difference Result 1290 states and 1569 transitions. [2020-09-04 15:11:45,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-04 15:11:45,177 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 199 [2020-09-04 15:11:45,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:11:45,192 INFO L225 Difference]: With dead ends: 1290 [2020-09-04 15:11:45,192 INFO L226 Difference]: Without dead ends: 892 [2020-09-04 15:11:45,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=434, Invalid=1206, Unknown=0, NotChecked=0, Total=1640 [2020-09-04 15:11:45,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2020-09-04 15:11:45,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 511. [2020-09-04 15:11:45,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-09-04 15:11:45,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 555 transitions. [2020-09-04 15:11:45,470 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 555 transitions. Word has length 199 [2020-09-04 15:11:45,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:11:45,471 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 555 transitions. [2020-09-04 15:11:45,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 15:11:45,471 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 555 transitions. [2020-09-04 15:11:45,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-04 15:11:45,474 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:11:45,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:11:45,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 15:11:45,475 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:11:45,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:11:45,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1512917738, now seen corresponding path program 1 times [2020-09-04 15:11:45,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:11:45,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607774896] [2020-09-04 15:11:45,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:11:45,482 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:11:45,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:45,815 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:11:45,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:11:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:45,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:11:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:45,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:11:45,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:45,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:11:45,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:45,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:11:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:45,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:11:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:45,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 15:11:45,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:45,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 15:11:45,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:45,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-04 15:11:45,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:45,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:11:45,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:46,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:11:46,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:46,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:11:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:46,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-09-04 15:11:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:46,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 15:11:46,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:46,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:11:46,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607774896] [2020-09-04 15:11:46,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:11:46,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-04 15:11:46,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256776675] [2020-09-04 15:11:46,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 15:11:46,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:11:46,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 15:11:46,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-04 15:11:46,072 INFO L87 Difference]: Start difference. First operand 511 states and 555 transitions. Second operand 12 states. [2020-09-04 15:11:47,465 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:11:47,789 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 15:11:48,137 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-09-04 15:11:48,455 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:11:48,777 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:11:49,073 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:11:50,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:11:50,794 INFO L93 Difference]: Finished difference Result 1298 states and 1591 transitions. [2020-09-04 15:11:50,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-04 15:11:50,795 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 200 [2020-09-04 15:11:50,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:11:50,801 INFO L225 Difference]: With dead ends: 1298 [2020-09-04 15:11:50,801 INFO L226 Difference]: Without dead ends: 902 [2020-09-04 15:11:50,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=203, Invalid=499, Unknown=0, NotChecked=0, Total=702 [2020-09-04 15:11:50,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2020-09-04 15:11:50,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 527. [2020-09-04 15:11:50,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2020-09-04 15:11:50,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 571 transitions. [2020-09-04 15:11:50,984 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 571 transitions. Word has length 200 [2020-09-04 15:11:50,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:11:50,985 INFO L479 AbstractCegarLoop]: Abstraction has 527 states and 571 transitions. [2020-09-04 15:11:50,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 15:11:50,985 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 571 transitions. [2020-09-04 15:11:50,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-04 15:11:50,987 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:11:50,988 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:11:50,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 15:11:50,988 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:11:50,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:11:50,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1642255734, now seen corresponding path program 1 times [2020-09-04 15:11:50,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:11:50,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125843997] [2020-09-04 15:11:50,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:11:50,991 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:11:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:51,296 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:11:51,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:11:51,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:51,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:11:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:51,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:11:51,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:51,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:11:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:51,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:11:51,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:51,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:11:51,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:51,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 15:11:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:51,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 15:11:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:51,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-04 15:11:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:51,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:11:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:51,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:11:51,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:51,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:11:51,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:51,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-09-04 15:11:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:51,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 15:11:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:51,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:11:51,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125843997] [2020-09-04 15:11:51,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:11:51,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-04 15:11:51,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993921317] [2020-09-04 15:11:51,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-04 15:11:51,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:11:51,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-04 15:11:51,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-09-04 15:11:51,525 INFO L87 Difference]: Start difference. First operand 527 states and 571 transitions. Second operand 15 states. [2020-09-04 15:11:52,234 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:11:52,566 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 15:11:52,904 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:11:53,215 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:11:53,511 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:11:54,568 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:11:54,884 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:11:55,216 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:11:55,548 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:11:55,850 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:11:57,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:11:57,825 INFO L93 Difference]: Finished difference Result 1336 states and 1656 transitions. [2020-09-04 15:11:57,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-04 15:11:57,827 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 200 [2020-09-04 15:11:57,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:11:57,833 INFO L225 Difference]: With dead ends: 1336 [2020-09-04 15:11:57,833 INFO L226 Difference]: Without dead ends: 924 [2020-09-04 15:11:57,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=278, Invalid=844, Unknown=0, NotChecked=0, Total=1122 [2020-09-04 15:11:57,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2020-09-04 15:11:57,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 539. [2020-09-04 15:11:57,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2020-09-04 15:11:57,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 583 transitions. [2020-09-04 15:11:57,982 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 583 transitions. Word has length 200 [2020-09-04 15:11:57,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:11:57,983 INFO L479 AbstractCegarLoop]: Abstraction has 539 states and 583 transitions. [2020-09-04 15:11:57,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-04 15:11:57,983 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 583 transitions. [2020-09-04 15:11:57,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-04 15:11:57,985 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:11:57,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:11:57,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 15:11:57,986 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:11:57,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:11:57,986 INFO L82 PathProgramCache]: Analyzing trace with hash -488866957, now seen corresponding path program 1 times [2020-09-04 15:11:57,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:11:57,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416899632] [2020-09-04 15:11:57,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:11:57,989 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:11:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:58,411 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:11:58,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:11:58,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:58,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:11:58,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:58,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:11:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:58,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:11:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:58,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:11:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:58,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:11:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:58,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 15:11:58,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:58,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 15:11:58,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:58,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-04 15:11:58,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:58,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:11:58,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:58,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:11:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:58,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:11:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:58,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-09-04 15:11:58,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:58,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 15:11:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:58,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:11:58,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416899632] [2020-09-04 15:11:58,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:11:58,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:11:58,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058825500] [2020-09-04 15:11:58,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:11:58,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:11:58,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:11:58,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:11:58,605 INFO L87 Difference]: Start difference. First operand 539 states and 583 transitions. Second operand 9 states. [2020-09-04 15:11:59,218 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:11:59,882 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:12:03,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:03,712 INFO L93 Difference]: Finished difference Result 2025 states and 2572 transitions. [2020-09-04 15:12:03,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-04 15:12:03,713 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 200 [2020-09-04 15:12:03,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:03,723 INFO L225 Difference]: With dead ends: 2025 [2020-09-04 15:12:03,723 INFO L226 Difference]: Without dead ends: 1601 [2020-09-04 15:12:03,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=290, Invalid=1042, Unknown=0, NotChecked=0, Total=1332 [2020-09-04 15:12:03,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2020-09-04 15:12:04,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 957. [2020-09-04 15:12:04,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 957 states. [2020-09-04 15:12:04,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1063 transitions. [2020-09-04 15:12:04,142 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1063 transitions. Word has length 200 [2020-09-04 15:12:04,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:04,143 INFO L479 AbstractCegarLoop]: Abstraction has 957 states and 1063 transitions. [2020-09-04 15:12:04,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:12:04,143 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1063 transitions. [2020-09-04 15:12:04,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-04 15:12:04,145 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:04,146 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:12:04,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 15:12:04,146 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:04,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:04,146 INFO L82 PathProgramCache]: Analyzing trace with hash -390526145, now seen corresponding path program 1 times [2020-09-04 15:12:04,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:04,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931169514] [2020-09-04 15:12:04,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:04,149 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:04,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:04,506 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:04,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:04,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:04,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:04,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:04,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:04,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:04,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:04,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:04,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:12:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:04,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-04 15:12:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:04,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-04 15:12:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:04,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-09-04 15:12:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:04,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:12:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:04,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:12:04,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:04,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:12:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:04,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-04 15:12:04,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:04,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-04 15:12:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:04,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:12:04,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931169514] [2020-09-04 15:12:04,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:04,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:12:04,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768977246] [2020-09-04 15:12:04,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:12:04,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:04,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:12:04,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:12:04,713 INFO L87 Difference]: Start difference. First operand 957 states and 1063 transitions. Second operand 9 states. [2020-09-04 15:12:05,198 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:12:08,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:08,756 INFO L93 Difference]: Finished difference Result 2467 states and 3159 transitions. [2020-09-04 15:12:08,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-04 15:12:08,757 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 205 [2020-09-04 15:12:08,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:08,772 INFO L225 Difference]: With dead ends: 2467 [2020-09-04 15:12:08,772 INFO L226 Difference]: Without dead ends: 2464 [2020-09-04 15:12:08,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=297, Invalid=963, Unknown=0, NotChecked=0, Total=1260 [2020-09-04 15:12:08,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2020-09-04 15:12:09,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 1476. [2020-09-04 15:12:09,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1476 states. [2020-09-04 15:12:09,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 1655 transitions. [2020-09-04 15:12:09,484 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 1655 transitions. Word has length 205 [2020-09-04 15:12:09,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:09,485 INFO L479 AbstractCegarLoop]: Abstraction has 1476 states and 1655 transitions. [2020-09-04 15:12:09,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:12:09,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 1655 transitions. [2020-09-04 15:12:09,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-09-04 15:12:09,490 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:09,491 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:12:09,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 15:12:09,491 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:09,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:09,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1476221887, now seen corresponding path program 1 times [2020-09-04 15:12:09,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:09,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129247012] [2020-09-04 15:12:09,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:09,537 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:12:09,628 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:12:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:12:09,707 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:12:10,032 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 15:12:10,032 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 15:12:10,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 15:12:10,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 03:12:10 BoogieIcfgContainer [2020-09-04 15:12:10,065 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 15:12:10,067 INFO L168 Benchmark]: Toolchain (without parser) took 54377.97 ms. Allocated memory was 137.9 MB in the beginning and 901.8 MB in the end (delta: 763.9 MB). Free memory was 100.9 MB in the beginning and 717.8 MB in the end (delta: -616.9 MB). Peak memory consumption was 146.9 MB. Max. memory is 7.1 GB. [2020-09-04 15:12:10,068 INFO L168 Benchmark]: CDTParser took 0.87 ms. Allocated memory is still 137.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 15:12:10,068 INFO L168 Benchmark]: CACSL2BoogieTranslator took 647.64 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 100.7 MB in the beginning and 173.2 MB in the end (delta: -72.5 MB). Peak memory consumption was 29.3 MB. Max. memory is 7.1 GB. [2020-09-04 15:12:10,069 INFO L168 Benchmark]: Boogie Preprocessor took 97.60 ms. Allocated memory is still 202.9 MB. Free memory was 173.2 MB in the beginning and 168.9 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-09-04 15:12:10,070 INFO L168 Benchmark]: RCFGBuilder took 1211.72 ms. Allocated memory was 202.9 MB in the beginning and 233.3 MB in the end (delta: 30.4 MB). Free memory was 168.9 MB in the beginning and 180.3 MB in the end (delta: -11.5 MB). Peak memory consumption was 88.7 MB. Max. memory is 7.1 GB. [2020-09-04 15:12:10,070 INFO L168 Benchmark]: TraceAbstraction took 52415.62 ms. Allocated memory was 233.3 MB in the beginning and 901.8 MB in the end (delta: 668.5 MB). Free memory was 178.9 MB in the beginning and 717.8 MB in the end (delta: -539.0 MB). Peak memory consumption was 129.5 MB. Max. memory is 7.1 GB. [2020-09-04 15:12:10,073 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.87 ms. Allocated memory is still 137.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 647.64 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 100.7 MB in the beginning and 173.2 MB in the end (delta: -72.5 MB). Peak memory consumption was 29.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 97.60 ms. Allocated memory is still 202.9 MB. Free memory was 173.2 MB in the beginning and 168.9 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1211.72 ms. Allocated memory was 202.9 MB in the beginning and 233.3 MB in the end (delta: 30.4 MB). Free memory was 168.9 MB in the beginning and 180.3 MB in the end (delta: -11.5 MB). Peak memory consumption was 88.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 52415.62 ms. Allocated memory was 233.3 MB in the beginning and 901.8 MB in the end (delta: 668.5 MB). Free memory was 178.9 MB in the beginning and 717.8 MB in the end (delta: -539.0 MB). Peak memory consumption was 129.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 249]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L151] int waterLevel = 1; [L152] int methaneLevelCritical = 0; [L255] int methAndRunningLastTime ; [L498] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L765] int pumpRunning = 0; [L766] int systemActive = 1; [L123] int retValue_acc ; [L124] int tmp ; [L128] FCALL select_helpers() [L129] FCALL select_features() [L130] CALL, EXPR valid_product() [L320] int retValue_acc ; [L323] retValue_acc = 1 [L324] return (retValue_acc); [L130] RET, EXPR valid_product() [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L134] FCALL setup() [L135] CALL runTest() [L113] CALL __utac_acc__Specification2_spec__1() [L260] methAndRunningLastTime = 0 [L113] RET __utac_acc__Specification2_spec__1() [L114] CALL test() [L697] int splverifierCounter ; [L698] int tmp ; [L699] int tmp___0 ; [L700] int tmp___1 ; [L701] int tmp___2 ; [L704] splverifierCounter = 0 [L706] COND TRUE 1 [L708] COND TRUE splverifierCounter < 4 [L714] tmp = __VERIFIER_nondet_int() [L716] COND TRUE \read(tmp) [L718] CALL waterRise() [L169] COND TRUE waterLevel < 2 [L170] waterLevel = waterLevel + 1 [L718] RET waterRise() [L724] tmp___0 = __VERIFIER_nondet_int() [L726] COND TRUE \read(tmp___0) [L728] CALL changeMethaneLevel() [L181] COND FALSE !(\read(methaneLevelCritical)) [L184] methaneLevelCritical = 1 [L728] RET changeMethaneLevel() [L734] tmp___2 = __VERIFIER_nondet_int() [L736] COND TRUE \read(tmp___2) [L738] CALL startSystem() [L920] systemActive = 1 [L738] RET startSystem() [L751] CALL timeShift() [L772] COND FALSE !(\read(pumpRunning)) [L779] COND TRUE \read(systemActive) [L781] CALL processEnvironment() [L801] int tmp ; [L804] COND TRUE ! pumpRunning [L806] CALL, EXPR isHighWaterLevel() [L898] int retValue_acc ; [L899] int tmp ; [L900] int tmp___0 ; [L904] CALL, EXPR isHighWaterSensorDry() [L231] int retValue_acc ; [L234] COND FALSE !(waterLevel < 2) [L238] retValue_acc = 0 [L239] return (retValue_acc); [L904] RET, EXPR isHighWaterSensorDry() [L904] tmp = isHighWaterSensorDry() [L906] COND FALSE !(\read(tmp)) [L909] tmp___0 = 1 [L911] retValue_acc = tmp___0 [L912] return (retValue_acc); [L806] RET, EXPR isHighWaterLevel() [L806] tmp = isHighWaterLevel() [L808] COND TRUE \read(tmp) [L810] CALL activatePump() [L829] pumpRunning = 1 [L810] RET activatePump() [L781] RET processEnvironment() [L787] CALL __utac_acc__Specification2_spec__2() [L265] int tmp ; [L266] int tmp___0 ; [L270] CALL, EXPR isMethaneLevelCritical() [L190] int retValue_acc ; [L193] retValue_acc = methaneLevelCritical [L194] return (retValue_acc); [L270] RET, EXPR isMethaneLevelCritical() [L270] tmp = isMethaneLevelCritical() [L272] COND TRUE \read(tmp) [L274] CALL, EXPR isPumpRunning() [L853] int retValue_acc ; [L856] retValue_acc = pumpRunning [L857] return (retValue_acc); [L274] RET, EXPR isPumpRunning() [L274] tmp___0 = isPumpRunning() [L276] COND TRUE \read(tmp___0) [L277] COND FALSE !(\read(methAndRunningLastTime)) [L282] methAndRunningLastTime = 1 [L787] RET __utac_acc__Specification2_spec__2() [L751] RET timeShift() [L706] COND TRUE 1 [L708] COND TRUE splverifierCounter < 4 [L714] tmp = __VERIFIER_nondet_int() [L716] COND FALSE !(\read(tmp)) [L724] tmp___0 = __VERIFIER_nondet_int() [L726] COND FALSE !(\read(tmp___0)) [L734] tmp___2 = __VERIFIER_nondet_int() [L736] COND TRUE \read(tmp___2) [L738] CALL startSystem() [L920] systemActive = 1 [L738] RET startSystem() [L751] CALL timeShift() [L772] COND TRUE \read(pumpRunning) [L774] CALL lowerWaterLevel() [L157] COND TRUE waterLevel > 0 [L158] waterLevel = waterLevel - 1 [L774] RET lowerWaterLevel() [L779] COND TRUE \read(systemActive) [L781] CALL processEnvironment() [L801] int tmp ; [L804] COND FALSE !(! pumpRunning) [L819] FCALL processEnvironment__wrappee__base() [L781] RET processEnvironment() [L787] CALL __utac_acc__Specification2_spec__2() [L265] int tmp ; [L266] int tmp___0 ; [L270] CALL, EXPR isMethaneLevelCritical() [L190] int retValue_acc ; [L193] retValue_acc = methaneLevelCritical [L194] return (retValue_acc); [L270] RET, EXPR isMethaneLevelCritical() [L270] tmp = isMethaneLevelCritical() [L272] COND TRUE \read(tmp) [L274] CALL, EXPR isPumpRunning() [L853] int retValue_acc ; [L856] retValue_acc = pumpRunning [L857] return (retValue_acc); [L274] RET, EXPR isPumpRunning() [L274] tmp___0 = isPumpRunning() [L276] COND TRUE \read(tmp___0) [L277] COND TRUE \read(methAndRunningLastTime) [L279] CALL __automaton_fail() [L249] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 619 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 52.3s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 42.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2271 SDtfs, 8327 SDslu, 4931 SDs, 0 SdLazy, 9646 SolverSat, 2344 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 542 GetRequests, 300 SyntacticMatches, 2 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1726 ImplicationChecksByTransitivity, 18.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1476occurred in iteration=10, 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, 10 MinimizatonAttempts, 3325 StatesRemovedByMinimization, 10 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...