/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_spec1_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 15:01:48,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 15:01:48,729 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 15:01:48,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 15:01:48,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 15:01:48,756 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 15:01:48,757 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 15:01:48,759 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 15:01:48,761 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 15:01:48,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 15:01:48,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 15:01:48,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 15:01:48,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 15:01:48,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 15:01:48,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 15:01:48,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 15:01:48,769 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 15:01:48,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 15:01:48,775 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 15:01:48,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 15:01:48,783 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 15:01:48,785 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 15:01:48,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 15:01:48,788 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 15:01:48,795 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 15:01:48,795 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 15:01:48,796 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 15:01:48,799 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 15:01:48,799 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 15:01:48,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 15:01:48,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 15:01:48,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 15:01:48,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 15:01:48,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 15:01:48,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 15:01:48,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 15:01:48,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 15:01:48,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 15:01:48,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 15:01:48,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 15:01:48,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 15:01:48,812 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 15:01:48,846 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 15:01:48,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 15:01:48,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 15:01:48,849 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 15:01:48,850 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 15:01:48,851 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 15:01:48,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 15:01:48,851 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 15:01:48,851 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 15:01:48,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 15:01:48,852 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 15:01:48,852 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 15:01:48,852 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 15:01:48,852 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 15:01:48,854 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 15:01:48,854 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 15:01:48,854 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 15:01:48,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 15:01:48,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:01:48,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 15:01:48,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 15:01:48,856 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 15:01:48,856 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 15:01:49,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 15:01:49,364 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 15:01:49,369 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 15:01:49,371 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 15:01:49,372 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 15:01:49,373 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product36.cil.c [2020-09-04 15:01:49,463 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f65eb3cd/fc75c48bb12443f1b059b16a53f29e33/FLAG8f9690feb [2020-09-04 15:01:50,084 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 15:01:50,085 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product36.cil.c [2020-09-04 15:01:50,107 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f65eb3cd/fc75c48bb12443f1b059b16a53f29e33/FLAG8f9690feb [2020-09-04 15:01:50,344 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f65eb3cd/fc75c48bb12443f1b059b16a53f29e33 [2020-09-04 15:01:50,357 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 15:01:50,360 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 15:01:50,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 15:01:50,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 15:01:50,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 15:01:50,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:01:50" (1/1) ... [2020-09-04 15:01:50,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11967da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:01:50, skipping insertion in model container [2020-09-04 15:01:50,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:01:50" (1/1) ... [2020-09-04 15:01:50,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 15:01:50,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 15:01:50,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:01:50,831 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 15:01:51,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:01:51,076 INFO L208 MainTranslator]: Completed translation [2020-09-04 15:01:51,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:01:51 WrapperNode [2020-09-04 15:01:51,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 15:01:51,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 15:01:51,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 15:01:51,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 15:01:51,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:01:51" (1/1) ... [2020-09-04 15:01:51,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:01:51" (1/1) ... [2020-09-04 15:01:51,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:01:51" (1/1) ... [2020-09-04 15:01:51,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:01:51" (1/1) ... [2020-09-04 15:01:51,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:01:51" (1/1) ... [2020-09-04 15:01:51,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:01:51" (1/1) ... [2020-09-04 15:01:51,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:01:51" (1/1) ... [2020-09-04 15:01:51,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 15:01:51,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 15:01:51,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 15:01:51,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 15:01:51,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:01:51" (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 15:01:51,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 15:01:51,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 15:01:51,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 15:01:51,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 15:01:51,277 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 15:01:51,277 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 15:01:51,277 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 15:01:51,277 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 15:01:51,277 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 15:01:51,277 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 15:01:51,277 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 15:01:51,278 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 15:01:51,278 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-04 15:01:51,278 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-04 15:01:51,278 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-04 15:01:51,278 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 15:01:51,278 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 15:01:51,278 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 15:01:51,279 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 15:01:51,279 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 15:01:51,279 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 15:01:51,279 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-04 15:01:51,280 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 15:01:51,280 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 15:01:51,280 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 15:01:51,280 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 15:01:51,280 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 15:01:51,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 15:01:51,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 15:01:51,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 15:01:51,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 15:01:51,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 15:01:51,282 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 15:01:51,282 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-04 15:01:51,282 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 15:01:51,282 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 15:01:51,282 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 15:01:51,282 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 15:01:51,282 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 15:01:51,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 15:01:51,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 15:01:51,283 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 15:01:51,283 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 15:01:51,283 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 15:01:51,283 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 15:01:51,284 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 15:01:51,284 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-04 15:01:51,284 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 15:01:51,284 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 15:01:51,284 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 15:01:51,284 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 15:01:51,285 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 15:01:51,285 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-04 15:01:51,285 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-04 15:01:51,285 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-04 15:01:51,285 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 15:01:51,285 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 15:01:51,286 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-04 15:01:51,286 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 15:01:51,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 15:01:51,286 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 15:01:51,286 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 15:01:51,286 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 15:01:51,286 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 15:01:51,286 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 15:01:51,286 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 15:01:51,287 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 15:01:51,287 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 15:01:51,287 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 15:01:51,287 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 15:01:51,287 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 15:01:51,287 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 15:01:51,287 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 15:01:51,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 15:01:51,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 15:01:51,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 15:01:51,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 15:01:51,288 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 15:01:51,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 15:01:51,289 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 15:01:51,289 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 15:01:51,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 15:01:51,289 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 15:01:51,289 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 15:01:51,289 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 15:01:51,289 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 15:01:51,290 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 15:01:51,290 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 15:01:51,290 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 15:01:51,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 15:01:51,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 15:01:51,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 15:01:52,430 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 15:01:52,430 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 15:01:52,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:01:52 BoogieIcfgContainer [2020-09-04 15:01:52,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 15:01:52,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 15:01:52,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 15:01:52,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 15:01:52,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 03:01:50" (1/3) ... [2020-09-04 15:01:52,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c581cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:01:52, skipping insertion in model container [2020-09-04 15:01:52,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:01:51" (2/3) ... [2020-09-04 15:01:52,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c581cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:01:52, skipping insertion in model container [2020-09-04 15:01:52,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:01:52" (3/3) ... [2020-09-04 15:01:52,455 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product36.cil.c [2020-09-04 15:01:52,467 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 15:01:52,477 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 15:01:52,500 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 15:01:52,530 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 15:01:52,530 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 15:01:52,530 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 15:01:52,531 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 15:01:52,531 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 15:01:52,531 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 15:01:52,531 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 15:01:52,531 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 15:01:52,555 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states. [2020-09-04 15:01:52,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-04 15:01:52,579 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:01:52,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:01:52,581 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:01:52,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:01:52,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1033241294, now seen corresponding path program 1 times [2020-09-04 15:01:52,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:01:52,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421479106] [2020-09-04 15:01:52,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:01:52,695 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:01:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:53,429 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:01:53,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:01:53,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:53,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:01:53,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:53,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:01:53,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:53,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:01:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:53,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:01:53,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:53,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:01:53,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:53,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-04 15:01:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:53,613 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 15:01:53,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421479106] [2020-09-04 15:01:53,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:01:53,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 15:01:53,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777132738] [2020-09-04 15:01:53,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 15:01:53,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:01:53,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 15:01:53,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:01:53,649 INFO L87 Difference]: Start difference. First operand 297 states. Second operand 3 states. [2020-09-04 15:01:55,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:01:55,014 INFO L93 Difference]: Finished difference Result 448 states and 534 transitions. [2020-09-04 15:01:55,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 15:01:55,016 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-04 15:01:55,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:01:55,037 INFO L225 Difference]: With dead ends: 448 [2020-09-04 15:01:55,037 INFO L226 Difference]: Without dead ends: 282 [2020-09-04 15:01:55,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:01:55,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-09-04 15:01:55,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 240. [2020-09-04 15:01:55,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-09-04 15:01:55,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 259 transitions. [2020-09-04 15:01:55,180 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 259 transitions. Word has length 142 [2020-09-04 15:01:55,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:01:55,181 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 259 transitions. [2020-09-04 15:01:55,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 15:01:55,182 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 259 transitions. [2020-09-04 15:01:55,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-04 15:01:55,186 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:01:55,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:01:55,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 15:01:55,187 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:01:55,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:01:55,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1951375081, now seen corresponding path program 1 times [2020-09-04 15:01:55,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:01:55,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568238647] [2020-09-04 15:01:55,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:01:55,191 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:01:55,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:55,652 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:01:55,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:01:55,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:55,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:01:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:55,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:01:55,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:55,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:01:55,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:55,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:01:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:55,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:01:55,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:55,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:01:55,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:55,737 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 15:01:55,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568238647] [2020-09-04 15:01:55,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:01:55,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 15:01:55,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44174174] [2020-09-04 15:01:55,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 15:01:55,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:01:55,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 15:01:55,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:01:55,741 INFO L87 Difference]: Start difference. First operand 240 states and 259 transitions. Second operand 4 states. [2020-09-04 15:01:56,400 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:01:57,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:01:57,255 INFO L93 Difference]: Finished difference Result 352 states and 395 transitions. [2020-09-04 15:01:57,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 15:01:57,256 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-04 15:01:57,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:01:57,265 INFO L225 Difference]: With dead ends: 352 [2020-09-04 15:01:57,265 INFO L226 Difference]: Without dead ends: 265 [2020-09-04 15:01:57,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 15:01:57,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-09-04 15:01:57,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 230. [2020-09-04 15:01:57,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-09-04 15:01:57,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 246 transitions. [2020-09-04 15:01:57,340 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 246 transitions. Word has length 143 [2020-09-04 15:01:57,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:01:57,341 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 246 transitions. [2020-09-04 15:01:57,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 15:01:57,341 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 246 transitions. [2020-09-04 15:01:57,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-04 15:01:57,344 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:01:57,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:01:57,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 15:01:57,348 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:01:57,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:01:57,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1408786884, now seen corresponding path program 1 times [2020-09-04 15:01:57,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:01:57,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382310795] [2020-09-04 15:01:57,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:01:57,354 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:01:57,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:57,734 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:01:57,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:01:57,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:57,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:01:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:57,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:01:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:57,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:01:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:57,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:01:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:57,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 15:01:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:57,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 15:01:57,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:57,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-04 15:01:57,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:57,918 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 15:01:57,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382310795] [2020-09-04 15:01:57,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:01:57,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:01:57,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988067502] [2020-09-04 15:01:57,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:01:57,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:01:57,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:01:57,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:01:57,921 INFO L87 Difference]: Start difference. First operand 230 states and 246 transitions. Second operand 10 states. [2020-09-04 15:01:58,436 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:01:58,851 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:01:59,146 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:01:59,444 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:01:59,740 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:02:00,059 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:00,987 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:03,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:02:03,210 INFO L93 Difference]: Finished difference Result 621 states and 722 transitions. [2020-09-04 15:02:03,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 15:02:03,211 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2020-09-04 15:02:03,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:02:03,217 INFO L225 Difference]: With dead ends: 621 [2020-09-04 15:02:03,218 INFO L226 Difference]: Without dead ends: 501 [2020-09-04 15:02:03,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-09-04 15:02:03,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2020-09-04 15:02:03,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 398. [2020-09-04 15:02:03,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-09-04 15:02:03,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 440 transitions. [2020-09-04 15:02:03,360 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 440 transitions. Word has length 156 [2020-09-04 15:02:03,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:02:03,361 INFO L479 AbstractCegarLoop]: Abstraction has 398 states and 440 transitions. [2020-09-04 15:02:03,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:02:03,361 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 440 transitions. [2020-09-04 15:02:03,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-04 15:02:03,364 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:02:03,364 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] [2020-09-04 15:02:03,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 15:02:03,365 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:02:03,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:02:03,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1641209859, now seen corresponding path program 1 times [2020-09-04 15:02:03,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:02:03,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774921620] [2020-09-04 15:02:03,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:02:03,368 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:02:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:03,784 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:02:03,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:02:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:03,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:02:03,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:03,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:02:03,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:03,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:02:03,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:03,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:02:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:03,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-04 15:02:03,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:03,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-04 15:02:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:04,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-04 15:02:04,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:04,064 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 15:02:04,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774921620] [2020-09-04 15:02:04,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:02:04,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:02:04,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781904654] [2020-09-04 15:02:04,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:02:04,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:02:04,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:02:04,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:02:04,068 INFO L87 Difference]: Start difference. First operand 398 states and 440 transitions. Second operand 9 states. [2020-09-04 15:02:04,631 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:02:06,022 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:06,325 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:02:06,707 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:07,035 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:02:07,362 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:02:07,664 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:07,970 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:08,416 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:09,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:02:09,489 INFO L93 Difference]: Finished difference Result 1084 states and 1296 transitions. [2020-09-04 15:02:09,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 15:02:09,491 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 161 [2020-09-04 15:02:09,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:02:09,500 INFO L225 Difference]: With dead ends: 1084 [2020-09-04 15:02:09,501 INFO L226 Difference]: Without dead ends: 796 [2020-09-04 15:02:09,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-09-04 15:02:09,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2020-09-04 15:02:09,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 647. [2020-09-04 15:02:09,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 647 states. [2020-09-04 15:02:09,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 726 transitions. [2020-09-04 15:02:09,699 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 726 transitions. Word has length 161 [2020-09-04 15:02:09,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:02:09,700 INFO L479 AbstractCegarLoop]: Abstraction has 647 states and 726 transitions. [2020-09-04 15:02:09,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:02:09,700 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 726 transitions. [2020-09-04 15:02:09,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-04 15:02:09,703 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:02:09,704 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] [2020-09-04 15:02:09,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 15:02:09,704 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:02:09,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:02:09,704 INFO L82 PathProgramCache]: Analyzing trace with hash 804799078, now seen corresponding path program 1 times [2020-09-04 15:02:09,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:02:09,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83516132] [2020-09-04 15:02:09,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:02:09,708 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:02:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:10,096 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:02:10,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:02:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:10,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:02:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:10,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:02:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:10,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:02:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:10,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:02:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:10,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:02:10,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:10,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 15:02:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:10,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-04 15:02:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:10,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-04 15:02:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:10,267 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 15:02:10,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83516132] [2020-09-04 15:02:10,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:02:10,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:02:10,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970404345] [2020-09-04 15:02:10,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:02:10,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:02:10,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:02:10,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:02:10,269 INFO L87 Difference]: Start difference. First operand 647 states and 726 transitions. Second operand 10 states. [2020-09-04 15:02:10,839 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:02:12,339 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:12,677 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:02:13,029 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:13,388 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:02:13,735 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:14,442 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:02:14,763 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:15,175 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:16,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:02:16,139 INFO L93 Difference]: Finished difference Result 1719 states and 2093 transitions. [2020-09-04 15:02:16,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-04 15:02:16,140 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 166 [2020-09-04 15:02:16,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:02:16,156 INFO L225 Difference]: With dead ends: 1719 [2020-09-04 15:02:16,156 INFO L226 Difference]: Without dead ends: 1182 [2020-09-04 15:02:16,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-09-04 15:02:16,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2020-09-04 15:02:16,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 937. [2020-09-04 15:02:16,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 937 states. [2020-09-04 15:02:16,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1073 transitions. [2020-09-04 15:02:16,641 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1073 transitions. Word has length 166 [2020-09-04 15:02:16,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:02:16,642 INFO L479 AbstractCegarLoop]: Abstraction has 937 states and 1073 transitions. [2020-09-04 15:02:16,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:02:16,642 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1073 transitions. [2020-09-04 15:02:16,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-04 15:02:16,646 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:02:16,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:02:16,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 15:02:16,647 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:02:16,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:02:16,647 INFO L82 PathProgramCache]: Analyzing trace with hash 633475050, now seen corresponding path program 1 times [2020-09-04 15:02:16,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:02:16,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778455142] [2020-09-04 15:02:16,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:02:16,650 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:02:16,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:17,025 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:02:17,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:02:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:17,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:02:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:17,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:02:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:17,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:02:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:17,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:02:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:17,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:02:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:17,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:02:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:17,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 15:02:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:17,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:02:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:17,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:02:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:17,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:02:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:17,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-09-04 15:02:17,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:17,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-04 15:02:17,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:17,302 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 15:02:17,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778455142] [2020-09-04 15:02:17,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:02:17,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 15:02:17,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036480647] [2020-09-04 15:02:17,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 15:02:17,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:02:17,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 15:02:17,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:02:17,306 INFO L87 Difference]: Start difference. First operand 937 states and 1073 transitions. Second operand 11 states. [2020-09-04 15:02:19,219 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:19,562 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:02:19,906 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 15:02:20,251 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:20,591 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:02:20,901 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:22,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:02:22,782 INFO L93 Difference]: Finished difference Result 2368 states and 2969 transitions. [2020-09-04 15:02:22,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-04 15:02:22,783 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 194 [2020-09-04 15:02:22,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:02:22,794 INFO L225 Difference]: With dead ends: 2368 [2020-09-04 15:02:22,794 INFO L226 Difference]: Without dead ends: 1541 [2020-09-04 15:02:22,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-09-04 15:02:22,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2020-09-04 15:02:23,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 975. [2020-09-04 15:02:23,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 975 states. [2020-09-04 15:02:23,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1111 transitions. [2020-09-04 15:02:23,206 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1111 transitions. Word has length 194 [2020-09-04 15:02:23,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:02:23,207 INFO L479 AbstractCegarLoop]: Abstraction has 975 states and 1111 transitions. [2020-09-04 15:02:23,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 15:02:23,207 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1111 transitions. [2020-09-04 15:02:23,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-04 15:02:23,210 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:02:23,211 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 15:02:23,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 15:02:23,211 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:02:23,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:02:23,212 INFO L82 PathProgramCache]: Analyzing trace with hash -788765814, now seen corresponding path program 1 times [2020-09-04 15:02:23,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:02:23,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036566030] [2020-09-04 15:02:23,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:02:23,215 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:02:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:23,562 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:02:23,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:02:23,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:23,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:02:23,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:23,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:02:23,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:23,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:02:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:23,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:02:23,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:23,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:02:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:23,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:02:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:23,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 15:02:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:23,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:02:23,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:23,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:02:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:23,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:02:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:23,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-09-04 15:02:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:23,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-04 15:02:23,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:23,850 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 15:02:23,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036566030] [2020-09-04 15:02:23,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:02:23,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 15:02:23,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039988924] [2020-09-04 15:02:23,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 15:02:23,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:02:23,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 15:02:23,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-04 15:02:23,853 INFO L87 Difference]: Start difference. First operand 975 states and 1111 transitions. Second operand 14 states. [2020-09-04 15:02:24,503 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:24,799 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:02:25,092 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:25,374 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:02:25,647 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:26,762 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:27,113 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:02:27,456 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:27,794 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:02:28,107 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:29,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:02:29,874 INFO L93 Difference]: Finished difference Result 2450 states and 3110 transitions. [2020-09-04 15:02:29,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-04 15:02:29,874 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 194 [2020-09-04 15:02:29,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:02:29,885 INFO L225 Difference]: With dead ends: 2450 [2020-09-04 15:02:29,885 INFO L226 Difference]: Without dead ends: 1585 [2020-09-04 15:02:29,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-09-04 15:02:29,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2020-09-04 15:02:30,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 999. [2020-09-04 15:02:30,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2020-09-04 15:02:30,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1135 transitions. [2020-09-04 15:02:30,206 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1135 transitions. Word has length 194 [2020-09-04 15:02:30,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:02:30,206 INFO L479 AbstractCegarLoop]: Abstraction has 999 states and 1135 transitions. [2020-09-04 15:02:30,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 15:02:30,207 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1135 transitions. [2020-09-04 15:02:30,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-04 15:02:30,209 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:02:30,210 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 15:02:30,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 15:02:30,210 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:02:30,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:02:30,210 INFO L82 PathProgramCache]: Analyzing trace with hash -580417043, now seen corresponding path program 1 times [2020-09-04 15:02:30,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:02:30,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941782418] [2020-09-04 15:02:30,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:02:30,213 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:02:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:30,522 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:02:30,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:02:30,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:30,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:02:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:30,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:02:30,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:30,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:02:30,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:30,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:02:30,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:30,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:02:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:30,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:02:30,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:30,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 15:02:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:30,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:02:30,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:30,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:02:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:30,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:02:30,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:30,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-09-04 15:02:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:30,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-04 15:02:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:30,781 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 15:02:30,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941782418] [2020-09-04 15:02:30,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:02:30,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 15:02:30,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617773921] [2020-09-04 15:02:30,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 15:02:30,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:02:30,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 15:02:30,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-04 15:02:30,783 INFO L87 Difference]: Start difference. First operand 999 states and 1135 transitions. Second operand 8 states. [2020-09-04 15:02:31,357 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:02:32,028 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:02:36,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:02:36,532 INFO L93 Difference]: Finished difference Result 3927 states and 5016 transitions. [2020-09-04 15:02:36,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-04 15:02:36,533 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 194 [2020-09-04 15:02:36,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:02:36,554 INFO L225 Difference]: With dead ends: 3927 [2020-09-04 15:02:36,554 INFO L226 Difference]: Without dead ends: 3038 [2020-09-04 15:02:36,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2020-09-04 15:02:36,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3038 states. [2020-09-04 15:02:37,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3038 to 2139. [2020-09-04 15:02:37,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2139 states. [2020-09-04 15:02:37,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2139 states to 2139 states and 2463 transitions. [2020-09-04 15:02:37,873 INFO L78 Accepts]: Start accepts. Automaton has 2139 states and 2463 transitions. Word has length 194 [2020-09-04 15:02:37,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:02:37,873 INFO L479 AbstractCegarLoop]: Abstraction has 2139 states and 2463 transitions. [2020-09-04 15:02:37,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 15:02:37,874 INFO L276 IsEmpty]: Start isEmpty. Operand 2139 states and 2463 transitions. [2020-09-04 15:02:37,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-04 15:02:37,879 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:02:37,879 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 15:02:37,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 15:02:37,880 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:02:37,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:02:37,880 INFO L82 PathProgramCache]: Analyzing trace with hash -2090495192, now seen corresponding path program 1 times [2020-09-04 15:02:37,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:02:37,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965937940] [2020-09-04 15:02:37,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:02:37,884 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:02:37,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:02:37,988 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:02:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:02:38,092 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:02:38,330 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 15:02:38,331 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 15:02:38,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 15:02:38,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 03:02:38 BoogieIcfgContainer [2020-09-04 15:02:38,379 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 15:02:38,384 INFO L168 Benchmark]: Toolchain (without parser) took 48023.95 ms. Allocated memory was 143.1 MB in the beginning and 847.8 MB in the end (delta: 704.6 MB). Free memory was 106.6 MB in the beginning and 212.5 MB in the end (delta: -105.9 MB). Peak memory consumption was 598.8 MB. Max. memory is 7.1 GB. [2020-09-04 15:02:38,385 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 143.1 MB. Free memory was 125.7 MB in the beginning and 125.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 15:02:38,386 INFO L168 Benchmark]: CACSL2BoogieTranslator took 716.66 ms. Allocated memory was 143.1 MB in the beginning and 206.6 MB in the end (delta: 63.4 MB). Free memory was 106.4 MB in the beginning and 176.5 MB in the end (delta: -70.1 MB). Peak memory consumption was 29.4 MB. Max. memory is 7.1 GB. [2020-09-04 15:02:38,387 INFO L168 Benchmark]: Boogie Preprocessor took 120.43 ms. Allocated memory is still 206.6 MB. Free memory was 176.5 MB in the beginning and 172.7 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. [2020-09-04 15:02:38,388 INFO L168 Benchmark]: RCFGBuilder took 1245.80 ms. Allocated memory was 206.6 MB in the beginning and 231.2 MB in the end (delta: 24.6 MB). Free memory was 172.1 MB in the beginning and 167.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 77.0 MB. Max. memory is 7.1 GB. [2020-09-04 15:02:38,393 INFO L168 Benchmark]: TraceAbstraction took 45934.19 ms. Allocated memory was 231.2 MB in the beginning and 847.8 MB in the end (delta: 616.6 MB). Free memory was 166.6 MB in the beginning and 212.5 MB in the end (delta: -45.9 MB). Peak memory consumption was 570.7 MB. Max. memory is 7.1 GB. [2020-09-04 15:02:38,398 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 143.1 MB. Free memory was 125.7 MB in the beginning and 125.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 716.66 ms. Allocated memory was 143.1 MB in the beginning and 206.6 MB in the end (delta: 63.4 MB). Free memory was 106.4 MB in the beginning and 176.5 MB in the end (delta: -70.1 MB). Peak memory consumption was 29.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.43 ms. Allocated memory is still 206.6 MB. Free memory was 176.5 MB in the beginning and 172.7 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1245.80 ms. Allocated memory was 206.6 MB in the beginning and 231.2 MB in the end (delta: 24.6 MB). Free memory was 172.1 MB in the beginning and 167.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 77.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 45934.19 ms. Allocated memory was 231.2 MB in the beginning and 847.8 MB in the end (delta: 616.6 MB). Free memory was 166.6 MB in the beginning and 212.5 MB in the end (delta: -45.9 MB). Peak memory consumption was 570.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L60] int pumpRunning = 0; [L61] int systemActive = 1; [L239] int waterLevel = 1; [L240] int methaneLevelCritical = 0; [L610] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L833] int cleanupTimeShifts = 4; [L906] int retValue_acc ; [L907] int tmp ; [L911] FCALL select_helpers() [L912] FCALL select_features() [L913] CALL, EXPR valid_product() [L432] int retValue_acc ; [L435] retValue_acc = 1 [L436] return (retValue_acc); [L913] RET, EXPR valid_product() [L913] tmp = valid_product() [L915] COND TRUE \read(tmp) [L917] FCALL setup() [L918] CALL runTest() [L900] CALL test() [L335] int splverifierCounter ; [L336] int tmp ; [L337] int tmp___0 ; [L338] int tmp___1 ; [L339] int tmp___2 ; [L342] splverifierCounter = 0 [L344] COND TRUE 1 [L346] COND TRUE splverifierCounter < 4 [L352] tmp = __VERIFIER_nondet_int() [L354] COND TRUE \read(tmp) [L356] CALL waterRise() [L257] COND TRUE waterLevel < 2 [L258] waterLevel = waterLevel + 1 [L356] RET waterRise() [L362] tmp___0 = __VERIFIER_nondet_int() [L364] COND TRUE \read(tmp___0) [L366] CALL changeMethaneLevel() [L269] COND FALSE !(\read(methaneLevelCritical)) [L272] methaneLevelCritical = 1 [L366] RET changeMethaneLevel() [L372] tmp___2 = __VERIFIER_nondet_int() [L374] COND TRUE \read(tmp___2) [L376] CALL startSystem() [L231] systemActive = 1 [L376] RET startSystem() [L391] CALL timeShift() [L68] COND FALSE !(\read(pumpRunning)) [L75] COND TRUE \read(systemActive) [L77] CALL processEnvironment() [L97] int tmp ; [L100] COND TRUE ! pumpRunning [L102] CALL, EXPR isHighWaterLevel() [L194] int retValue_acc ; [L195] int tmp ; [L196] int tmp___0 ; [L200] CALL, EXPR isHighWaterSensorDry() [L319] int retValue_acc ; [L322] COND FALSE !(waterLevel < 2) [L326] retValue_acc = 0 [L327] return (retValue_acc); [L200] RET, EXPR isHighWaterSensorDry() [L200] tmp = isHighWaterSensorDry() [L202] COND FALSE !(\read(tmp)) [L205] tmp___0 = 1 [L207] retValue_acc = tmp___0 [L208] return (retValue_acc); [L102] RET, EXPR isHighWaterLevel() [L102] tmp = isHighWaterLevel() [L104] COND TRUE \read(tmp) [L106] CALL activatePump() [L125] pumpRunning = 1 [L106] RET activatePump() [L77] RET processEnvironment() [L83] CALL __utac_acc__Specification1_spec__1() [L808] int tmp ; [L809] int tmp___0 ; [L813] CALL, EXPR isMethaneLevelCritical() [L278] int retValue_acc ; [L281] retValue_acc = methaneLevelCritical [L282] return (retValue_acc); [L813] RET, EXPR isMethaneLevelCritical() [L813] tmp = isMethaneLevelCritical() [L815] COND TRUE \read(tmp) [L817] CALL, EXPR isPumpRunning() [L149] int retValue_acc ; [L152] retValue_acc = pumpRunning [L153] return (retValue_acc); [L817] RET, EXPR isPumpRunning() [L817] tmp___0 = isPumpRunning() [L819] COND TRUE \read(tmp___0) [L821] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 616 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 45.8s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 36.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1858 SDtfs, 4352 SDslu, 4147 SDs, 0 SdLazy, 8052 SolverSat, 1474 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 324 GetRequests, 195 SyntacticMatches, 2 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 15.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2139occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 2625 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...