/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_spec3_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 15:23:19,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 15:23:19,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 15:23:19,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 15:23:19,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 15:23:19,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 15:23:19,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 15:23:19,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 15:23:19,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 15:23:19,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 15:23:19,573 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 15:23:19,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 15:23:19,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 15:23:19,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 15:23:19,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 15:23:19,578 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 15:23:19,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 15:23:19,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 15:23:19,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 15:23:19,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 15:23:19,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 15:23:19,586 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 15:23:19,588 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 15:23:19,589 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 15:23:19,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 15:23:19,591 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 15:23:19,592 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 15:23:19,593 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 15:23:19,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 15:23:19,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 15:23:19,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 15:23:19,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 15:23:19,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 15:23:19,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 15:23:19,598 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 15:23:19,598 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 15:23:19,599 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 15:23:19,599 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 15:23:19,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 15:23:19,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 15:23:19,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 15:23:19,603 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 15:23:19,615 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 15:23:19,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 15:23:19,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 15:23:19,617 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 15:23:19,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 15:23:19,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 15:23:19,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 15:23:19,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 15:23:19,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 15:23:19,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 15:23:19,618 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 15:23:19,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 15:23:19,618 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 15:23:19,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 15:23:19,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 15:23:19,619 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 15:23:19,619 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 15:23:19,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 15:23:19,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:23:19,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 15:23:19,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 15:23:19,620 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 15:23:19,620 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 15:23:20,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 15:23:20,067 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 15:23:20,071 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 15:23:20,073 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 15:23:20,074 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 15:23:20,075 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c [2020-09-04 15:23:20,169 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2c74036b/7ce8b66956b44e718548d1b78c5bc50a/FLAG2f5f019a3 [2020-09-04 15:23:20,835 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 15:23:20,835 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c [2020-09-04 15:23:20,848 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2c74036b/7ce8b66956b44e718548d1b78c5bc50a/FLAG2f5f019a3 [2020-09-04 15:23:21,041 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2c74036b/7ce8b66956b44e718548d1b78c5bc50a [2020-09-04 15:23:21,055 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 15:23:21,058 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 15:23:21,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 15:23:21,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 15:23:21,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 15:23:21,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:23:21" (1/1) ... [2020-09-04 15:23:21,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51800d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:21, skipping insertion in model container [2020-09-04 15:23:21,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:23:21" (1/1) ... [2020-09-04 15:23:21,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 15:23:21,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 15:23:21,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:23:21,542 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 15:23:21,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:23:21,750 INFO L208 MainTranslator]: Completed translation [2020-09-04 15:23:21,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:21 WrapperNode [2020-09-04 15:23:21,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 15:23:21,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 15:23:21,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 15:23:21,751 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 15:23:21,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:21" (1/1) ... [2020-09-04 15:23:21,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:21" (1/1) ... [2020-09-04 15:23:21,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:21" (1/1) ... [2020-09-04 15:23:21,790 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:21" (1/1) ... [2020-09-04 15:23:21,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:21" (1/1) ... [2020-09-04 15:23:21,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:21" (1/1) ... [2020-09-04 15:23:21,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:21" (1/1) ... [2020-09-04 15:23:21,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 15:23:21,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 15:23:21,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 15:23:21,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 15:23:21,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:21" (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 15:23:21,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 15:23:21,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 15:23:21,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 15:23:21,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 15:23:21,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 15:23:21,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 15:23:21,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 15:23:21,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 15:23:21,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 15:23:21,938 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 15:23:21,938 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 15:23:21,939 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-04 15:23:21,939 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 15:23:21,939 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 15:23:21,940 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 15:23:21,940 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 15:23:21,940 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 15:23:21,940 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 15:23:21,941 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-04 15:23:21,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 15:23:21,942 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 15:23:21,942 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 15:23:21,945 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 15:23:21,945 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 15:23:21,945 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 15:23:21,945 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 15:23:21,945 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 15:23:21,945 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-04 15:23:21,946 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 15:23:21,946 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 15:23:21,946 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 15:23:21,946 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 15:23:21,946 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 15:23:21,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-04 15:23:21,947 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 15:23:21,947 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 15:23:21,947 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 15:23:21,947 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 15:23:21,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 15:23:21,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 15:23:21,948 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 15:23:21,948 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 15:23:21,948 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 15:23:21,948 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 15:23:21,948 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 15:23:21,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 15:23:21,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 15:23:21,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 15:23:21,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 15:23:21,949 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 15:23:21,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 15:23:21,949 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 15:23:21,950 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 15:23:21,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 15:23:21,950 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 15:23:21,950 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 15:23:21,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 15:23:21,950 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 15:23:21,950 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 15:23:21,951 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 15:23:21,951 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 15:23:21,951 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-04 15:23:21,951 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 15:23:21,951 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 15:23:21,951 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 15:23:21,951 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 15:23:21,952 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 15:23:21,952 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-04 15:23:21,952 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 15:23:21,952 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 15:23:21,952 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-04 15:23:21,953 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-04 15:23:21,953 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 15:23:21,953 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 15:23:21,953 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 15:23:21,953 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 15:23:21,953 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 15:23:21,954 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 15:23:21,954 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 15:23:21,954 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 15:23:21,955 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 15:23:21,955 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 15:23:21,955 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 15:23:21,955 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 15:23:21,955 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 15:23:21,956 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 15:23:21,956 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 15:23:21,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 15:23:21,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 15:23:21,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 15:23:23,082 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 15:23:23,083 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 15:23:23,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:23:23 BoogieIcfgContainer [2020-09-04 15:23:23,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 15:23:23,091 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 15:23:23,091 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 15:23:23,095 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 15:23:23,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 03:23:21" (1/3) ... [2020-09-04 15:23:23,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@714e050f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:23:23, skipping insertion in model container [2020-09-04 15:23:23,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:21" (2/3) ... [2020-09-04 15:23:23,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@714e050f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:23:23, skipping insertion in model container [2020-09-04 15:23:23,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:23:23" (3/3) ... [2020-09-04 15:23:23,099 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product21.cil.c [2020-09-04 15:23:23,110 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 15:23:23,121 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 15:23:23,141 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 15:23:23,164 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 15:23:23,165 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 15:23:23,165 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 15:23:23,165 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 15:23:23,165 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 15:23:23,165 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 15:23:23,165 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 15:23:23,165 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 15:23:23,189 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states. [2020-09-04 15:23:23,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-04 15:23:23,211 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:23:23,213 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] [2020-09-04 15:23:23,213 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:23:23,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:23:23,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1461403982, now seen corresponding path program 1 times [2020-09-04 15:23:23,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:23:23,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889115206] [2020-09-04 15:23:23,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:23:23,303 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:23:23,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:24,003 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:23:24,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:23:24,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:24,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:23:24,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:24,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:23:24,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:24,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:23:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:24,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:23:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:24,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:23:24,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:24,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:23:24,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:24,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-04 15:23:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:24,267 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 15:23:24,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1889115206] [2020-09-04 15:23:24,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:23:24,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 15:23:24,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514830365] [2020-09-04 15:23:24,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 15:23:24,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:23:24,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 15:23:24,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:23:24,303 INFO L87 Difference]: Start difference. First operand 306 states. Second operand 3 states. [2020-09-04 15:23:25,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:23:25,603 INFO L93 Difference]: Finished difference Result 477 states and 570 transitions. [2020-09-04 15:23:25,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 15:23:25,605 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-04 15:23:25,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:23:25,625 INFO L225 Difference]: With dead ends: 477 [2020-09-04 15:23:25,626 INFO L226 Difference]: Without dead ends: 296 [2020-09-04 15:23:25,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 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 15:23:25,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-09-04 15:23:25,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 255. [2020-09-04 15:23:25,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-09-04 15:23:25,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 278 transitions. [2020-09-04 15:23:25,769 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 278 transitions. Word has length 153 [2020-09-04 15:23:25,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:23:25,770 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 278 transitions. [2020-09-04 15:23:25,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 15:23:25,771 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 278 transitions. [2020-09-04 15:23:25,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-04 15:23:25,775 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:23:25,776 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] [2020-09-04 15:23:25,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 15:23:25,776 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:23:25,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:23:25,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1820086342, now seen corresponding path program 1 times [2020-09-04 15:23:25,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:23:25,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045996271] [2020-09-04 15:23:25,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:23:25,780 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:23:25,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:26,168 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:23:26,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:23:26,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:26,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:23:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:26,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:23:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:26,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:23:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:26,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:23:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:26,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-04 15:23:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:26,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 15:23:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:26,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 15:23:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:26,302 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 15:23:26,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045996271] [2020-09-04 15:23:26,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:23:26,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 15:23:26,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573368192] [2020-09-04 15:23:26,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 15:23:26,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:23:26,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 15:23:26,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:23:26,307 INFO L87 Difference]: Start difference. First operand 255 states and 278 transitions. Second operand 4 states. [2020-09-04 15:23:26,944 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:23:27,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:23:27,939 INFO L93 Difference]: Finished difference Result 394 states and 445 transitions. [2020-09-04 15:23:27,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 15:23:27,942 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-04 15:23:27,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:23:27,946 INFO L225 Difference]: With dead ends: 394 [2020-09-04 15:23:27,947 INFO L226 Difference]: Without dead ends: 279 [2020-09-04 15:23:27,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 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 15:23:27,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-09-04 15:23:28,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 245. [2020-09-04 15:23:28,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-09-04 15:23:28,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 265 transitions. [2020-09-04 15:23:28,052 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 265 transitions. Word has length 154 [2020-09-04 15:23:28,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:23:28,053 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 265 transitions. [2020-09-04 15:23:28,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 15:23:28,053 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 265 transitions. [2020-09-04 15:23:28,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-04 15:23:28,056 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:23:28,057 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] [2020-09-04 15:23:28,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 15:23:28,057 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:23:28,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:23:28,058 INFO L82 PathProgramCache]: Analyzing trace with hash 874874567, now seen corresponding path program 1 times [2020-09-04 15:23:28,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:23:28,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048803578] [2020-09-04 15:23:28,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:23:28,062 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:23:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:28,509 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:23:28,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:23:28,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:28,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:23:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:28,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:23:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:28,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:23:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:28,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:23:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:28,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:23:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:28,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-04 15:23:28,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:28,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 15:23:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:28,707 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 15:23:28,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048803578] [2020-09-04 15:23:28,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:23:28,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:23:28,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48083402] [2020-09-04 15:23:28,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:23:28,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:23:28,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:23:28,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:23:28,711 INFO L87 Difference]: Start difference. First operand 245 states and 265 transitions. Second operand 9 states. [2020-09-04 15:23:29,217 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:23:29,602 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:23:29,901 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:23:30,207 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:23:30,506 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:23:30,814 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:23:32,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:23:32,337 INFO L93 Difference]: Finished difference Result 414 states and 470 transitions. [2020-09-04 15:23:32,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 15:23:32,345 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 163 [2020-09-04 15:23:32,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:23:32,348 INFO L225 Difference]: With dead ends: 414 [2020-09-04 15:23:32,348 INFO L226 Difference]: Without dead ends: 279 [2020-09-04 15:23:32,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-09-04 15:23:32,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-09-04 15:23:32,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 245. [2020-09-04 15:23:32,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-09-04 15:23:32,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 264 transitions. [2020-09-04 15:23:32,416 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 264 transitions. Word has length 163 [2020-09-04 15:23:32,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:23:32,419 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 264 transitions. [2020-09-04 15:23:32,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:23:32,419 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 264 transitions. [2020-09-04 15:23:32,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-04 15:23:32,422 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:23:32,422 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] [2020-09-04 15:23:32,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 15:23:32,422 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:23:32,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:23:32,423 INFO L82 PathProgramCache]: Analyzing trace with hash 515182839, now seen corresponding path program 1 times [2020-09-04 15:23:32,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:23:32,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251034440] [2020-09-04 15:23:32,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:23:32,426 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:23:32,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:32,835 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:23:32,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:23:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:32,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:23:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:32,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:23:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:32,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:23:32,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:32,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:23:32,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:32,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-04 15:23:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:32,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:23:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:32,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:23:32,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:32,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-04 15:23:32,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:32,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-04 15:23:32,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:33,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-04 15:23:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:33,069 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 15:23:33,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251034440] [2020-09-04 15:23:33,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:23:33,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:23:33,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511008588] [2020-09-04 15:23:33,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:23:33,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:23:33,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:23:33,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:23:33,074 INFO L87 Difference]: Start difference. First operand 245 states and 264 transitions. Second operand 9 states. [2020-09-04 15:23:33,607 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:23:35,769 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:23:36,105 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:23:36,354 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:23:36,659 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:23:36,944 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:23:37,476 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:23:37,804 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:23:38,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:23:38,146 INFO L93 Difference]: Finished difference Result 586 states and 694 transitions. [2020-09-04 15:23:38,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 15:23:38,147 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 176 [2020-09-04 15:23:38,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:23:38,151 INFO L225 Difference]: With dead ends: 586 [2020-09-04 15:23:38,152 INFO L226 Difference]: Without dead ends: 451 [2020-09-04 15:23:38,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-04 15:23:38,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-09-04 15:23:38,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 374. [2020-09-04 15:23:38,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2020-09-04 15:23:38,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 416 transitions. [2020-09-04 15:23:38,279 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 416 transitions. Word has length 176 [2020-09-04 15:23:38,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:23:38,279 INFO L479 AbstractCegarLoop]: Abstraction has 374 states and 416 transitions. [2020-09-04 15:23:38,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:23:38,280 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 416 transitions. [2020-09-04 15:23:38,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-04 15:23:38,283 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:23:38,283 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] [2020-09-04 15:23:38,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 15:23:38,283 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:23:38,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:23:38,284 INFO L82 PathProgramCache]: Analyzing trace with hash -342521873, now seen corresponding path program 1 times [2020-09-04 15:23:38,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:23:38,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [637843177] [2020-09-04 15:23:38,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:23:38,287 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:23:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:23:38,366 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:23:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:23:38,441 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:23:38,622 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 15:23:38,622 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 15:23:38,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 15:23:38,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 03:23:38 BoogieIcfgContainer [2020-09-04 15:23:38,647 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 15:23:38,649 INFO L168 Benchmark]: Toolchain (without parser) took 17592.24 ms. Allocated memory was 138.9 MB in the beginning and 539.5 MB in the end (delta: 400.6 MB). Free memory was 101.7 MB in the beginning and 204.8 MB in the end (delta: -103.1 MB). Peak memory consumption was 297.5 MB. Max. memory is 7.1 GB. [2020-09-04 15:23:38,650 INFO L168 Benchmark]: CDTParser took 0.87 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 15:23:38,651 INFO L168 Benchmark]: CACSL2BoogieTranslator took 692.10 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 101.5 MB in the beginning and 172.7 MB in the end (delta: -71.2 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. [2020-09-04 15:23:38,652 INFO L168 Benchmark]: Boogie Preprocessor took 95.49 ms. Allocated memory is still 202.9 MB. Free memory was 172.7 MB in the beginning and 168.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-09-04 15:23:38,653 INFO L168 Benchmark]: RCFGBuilder took 1242.93 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 168.6 MB in the beginning and 178.6 MB in the end (delta: -10.0 MB). Peak memory consumption was 85.9 MB. Max. memory is 7.1 GB. [2020-09-04 15:23:38,654 INFO L168 Benchmark]: TraceAbstraction took 15556.27 ms. Allocated memory was 235.9 MB in the beginning and 539.5 MB in the end (delta: 303.6 MB). Free memory was 178.6 MB in the beginning and 204.8 MB in the end (delta: -26.2 MB). Peak memory consumption was 277.4 MB. Max. memory is 7.1 GB. [2020-09-04 15:23:38,658 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.87 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 692.10 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 101.5 MB in the beginning and 172.7 MB in the end (delta: -71.2 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 95.49 ms. Allocated memory is still 202.9 MB. Free memory was 172.7 MB in the beginning and 168.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1242.93 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 168.6 MB in the beginning and 178.6 MB in the end (delta: -10.0 MB). Peak memory consumption was 85.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15556.27 ms. Allocated memory was 235.9 MB in the beginning and 539.5 MB in the end (delta: 303.6 MB). Free memory was 178.6 MB in the beginning and 204.8 MB in the end (delta: -26.2 MB). Peak memory consumption was 277.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 598]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L415] int pumpRunning = 0; [L416] int systemActive = 1; [L672] int waterLevel = 1; [L673] int methaneLevelCritical = 0; [L761] int cleanupTimeShifts = 4; [L837] int retValue_acc ; [L838] int tmp ; [L842] FCALL select_helpers() [L843] FCALL select_features() [L844] CALL, EXPR valid_product() [L920] int retValue_acc ; [L923] retValue_acc = 1 [L924] return (retValue_acc); [L844] RET, EXPR valid_product() [L844] tmp = valid_product() [L846] COND TRUE \read(tmp) [L848] FCALL setup() [L849] CALL runTest() [L828] CALL test() [L607] int splverifierCounter ; [L608] int tmp ; [L609] int tmp___0 ; [L610] int tmp___1 ; [L611] int tmp___2 ; [L614] splverifierCounter = 0 [L616] COND TRUE 1 [L618] COND TRUE splverifierCounter < 4 [L624] tmp = __VERIFIER_nondet_int() [L626] COND TRUE \read(tmp) [L628] CALL waterRise() [L690] COND TRUE waterLevel < 2 [L691] waterLevel = waterLevel + 1 [L628] RET waterRise() [L634] tmp___0 = __VERIFIER_nondet_int() [L636] COND FALSE !(\read(tmp___0)) [L644] tmp___2 = __VERIFIER_nondet_int() [L646] COND TRUE \read(tmp___2) [L659] CALL timeShift() [L423] COND FALSE !(\read(pumpRunning)) [L430] COND TRUE \read(systemActive) [L432] CALL processEnvironment() [L478] int tmp ; [L481] COND FALSE !(\read(pumpRunning)) [L496] CALL processEnvironment__wrappee__lowWaterSensor() [L452] int tmp ; [L455] COND FALSE !(\read(pumpRunning)) [L470] FCALL processEnvironment__wrappee__base() [L496] RET processEnvironment__wrappee__lowWaterSensor() [L432] RET processEnvironment() [L438] CALL __utac_acc__Specification3_spec__1() [L861] int tmp ; [L862] int tmp___0 ; [L863] int tmp___1 ; [L867] CALL, EXPR isMethaneLevelCritical() [L711] int retValue_acc ; [L714] retValue_acc = methaneLevelCritical [L715] return (retValue_acc); [L867] RET, EXPR isMethaneLevelCritical() [L867] tmp = isMethaneLevelCritical() [L869] COND FALSE !(\read(tmp)) [L873] CALL, EXPR getWaterLevel() [L743] int retValue_acc ; [L746] retValue_acc = waterLevel [L747] return (retValue_acc); [L873] RET, EXPR getWaterLevel() [L873] tmp___0 = getWaterLevel() [L875] COND TRUE tmp___0 == 2 [L877] CALL, EXPR isPumpRunning() [L530] int retValue_acc ; [L533] retValue_acc = pumpRunning [L534] return (retValue_acc); [L877] RET, EXPR isPumpRunning() [L877] tmp___1 = isPumpRunning() [L879] COND FALSE !(\read(tmp___1)) [L883] CALL __automaton_fail() [L598] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 621 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.4s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 11.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 933 SDtfs, 1173 SDslu, 1124 SDs, 0 SdLazy, 2553 SolverSat, 386 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=374occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 186 StatesRemovedByMinimization, 4 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...