/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_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:05:39,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:05:39,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:05:39,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 18:05:39,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 18:05:39,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 18:05:39,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 18:05:39,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 18:05:39,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 18:05:39,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 18:05:39,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 18:05:39,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 18:05:39,798 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:05:39,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:05:39,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:05:39,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:05:39,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:05:39,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:05:39,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:05:39,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:05:39,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:05:39,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:05:39,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:05:39,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:05:39,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 18:05:39,822 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 18:05:39,822 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 18:05:39,825 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 18:05:39,825 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 18:05:39,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 18:05:39,826 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 18:05:39,827 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 18:05:39,827 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 18:05:39,828 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 18:05:39,832 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 18:05:39,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 18:05:39,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 18:05:39,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 18:05:39,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 18:05:39,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 18:05:39,835 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 18:05:39,835 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 18:05:39,850 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:05:39,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:05:39,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:05:39,852 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:05:39,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:05:39,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:05:39,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:05:39,853 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:05:39,853 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:05:39,853 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:05:39,854 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:05:39,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:05:39,855 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:05:39,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:05:39,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:05:39,856 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:05:39,856 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:05:39,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:05:39,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:05:39,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:05:39,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:05:39,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:05:39,857 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:05:40,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:05:40,166 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:05:40,172 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:05:40,173 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:05:40,174 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:05:40,175 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product47.cil.c [2020-08-22 18:05:40,241 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3148b802d/da7f483be20f4b1cb39489c87827a32b/FLAG2c1d12312 [2020-08-22 18:05:40,850 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:05:40,852 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product47.cil.c [2020-08-22 18:05:40,869 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3148b802d/da7f483be20f4b1cb39489c87827a32b/FLAG2c1d12312 [2020-08-22 18:05:41,100 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3148b802d/da7f483be20f4b1cb39489c87827a32b [2020-08-22 18:05:41,111 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:05:41,113 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:05:41,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:05:41,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:05:41,120 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:05:41,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:05:41" (1/1) ... [2020-08-22 18:05:41,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f0bc56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:05:41, skipping insertion in model container [2020-08-22 18:05:41,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:05:41" (1/1) ... [2020-08-22 18:05:41,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:05:41,189 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:05:41,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:05:41,640 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:05:41,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:05:41,793 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:05:41,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:05:41 WrapperNode [2020-08-22 18:05:41,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:05:41,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:05:41,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:05:41,795 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:05:41,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:05:41" (1/1) ... [2020-08-22 18:05:41,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:05:41" (1/1) ... [2020-08-22 18:05:41,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:05:41" (1/1) ... [2020-08-22 18:05:41,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:05:41" (1/1) ... [2020-08-22 18:05:41,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:05:41" (1/1) ... [2020-08-22 18:05:41,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:05:41" (1/1) ... [2020-08-22 18:05:41,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:05:41" (1/1) ... [2020-08-22 18:05:41,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:05:41,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:05:41,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:05:41,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:05:41,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:05:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:05:41,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:05:41,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:05:41,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 18:05:41,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 18:05:41,974 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 18:05:41,975 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 18:05:41,975 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 18:05:41,975 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 18:05:41,975 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:05:41,975 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 18:05:41,976 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 18:05:41,977 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 18:05:41,977 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 18:05:41,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 18:05:41,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 18:05:41,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 18:05:41,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 18:05:41,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 18:05:41,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 18:05:41,978 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 18:05:41,979 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 18:05:41,980 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 18:05:41,982 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 18:05:41,983 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 18:05:41,983 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-22 18:05:41,983 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 18:05:41,983 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 18:05:41,983 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 18:05:41,983 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 18:05:41,984 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 18:05:41,984 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 18:05:41,984 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 18:05:41,984 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 18:05:41,984 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 18:05:41,984 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 18:05:41,984 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 18:05:41,985 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 18:05:41,985 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 18:05:41,985 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 18:05:41,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 18:05:41,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:05:41,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 18:05:41,986 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 18:05:41,986 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 18:05:41,986 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 18:05:41,986 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 18:05:41,986 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 18:05:41,986 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 18:05:41,986 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 18:05:41,987 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 18:05:41,988 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 18:05:41,988 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 18:05:41,988 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 18:05:41,988 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 18:05:41,988 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 18:05:41,988 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 18:05:41,988 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:05:41,989 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 18:05:41,989 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 18:05:41,989 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 18:05:41,989 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 18:05:41,989 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 18:05:41,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 18:05:41,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 18:05:41,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 18:05:41,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 18:05:41,990 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 18:05:41,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 18:05:41,990 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 18:05:41,990 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 18:05:41,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 18:05:41,991 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 18:05:41,991 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 18:05:41,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 18:05:41,991 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 18:05:41,991 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 18:05:41,991 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 18:05:41,992 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 18:05:41,992 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 18:05:41,992 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 18:05:41,993 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 18:05:41,993 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 18:05:41,993 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 18:05:41,993 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 18:05:41,993 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 18:05:41,994 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 18:05:41,994 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 18:05:41,995 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 18:05:41,995 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 18:05:41,996 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-22 18:05:41,996 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 18:05:41,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:05:41,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 18:05:41,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:05:43,064 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:05:43,065 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 18:05:43,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:05:43 BoogieIcfgContainer [2020-08-22 18:05:43,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:05:43,074 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:05:43,074 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:05:43,078 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:05:43,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:05:41" (1/3) ... [2020-08-22 18:05:43,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff8d0bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:05:43, skipping insertion in model container [2020-08-22 18:05:43,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:05:41" (2/3) ... [2020-08-22 18:05:43,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff8d0bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:05:43, skipping insertion in model container [2020-08-22 18:05:43,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:05:43" (3/3) ... [2020-08-22 18:05:43,082 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product47.cil.c [2020-08-22 18:05:43,093 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:05:43,104 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:05:43,119 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:05:43,143 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:05:43,144 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:05:43,144 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:05:43,144 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:05:43,144 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:05:43,145 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:05:43,145 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:05:43,145 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:05:43,167 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states. [2020-08-22 18:05:43,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-08-22 18:05:43,189 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:05:43,191 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] [2020-08-22 18:05:43,191 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:05:43,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:05:43,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1612013966, now seen corresponding path program 1 times [2020-08-22 18:05:43,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:05:43,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908112076] [2020-08-22 18:05:43,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:05:43,289 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:05:43,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:43,968 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:05:43,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:05:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:44,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:05:44,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:44,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:05:44,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:44,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:05:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:44,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:05:44,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:44,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 18:05:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:44,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 18:05:44,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:44,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 18:05:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:44,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:05:44,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908112076] [2020-08-22 18:05:44,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:05:44,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:05:44,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919425852] [2020-08-22 18:05:44,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:05:44,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:05:44,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:05:44,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:05:44,254 INFO L87 Difference]: Start difference. First operand 327 states. Second operand 3 states. [2020-08-22 18:05:45,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:05:45,884 INFO L93 Difference]: Finished difference Result 523 states and 625 transitions. [2020-08-22 18:05:45,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:05:45,886 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-08-22 18:05:45,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:05:45,904 INFO L225 Difference]: With dead ends: 523 [2020-08-22 18:05:45,905 INFO L226 Difference]: Without dead ends: 321 [2020-08-22 18:05:45,910 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 [2020-08-22 18:05:45,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-08-22 18:05:46,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 276. [2020-08-22 18:05:46,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-08-22 18:05:46,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 303 transitions. [2020-08-22 18:05:46,054 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 303 transitions. Word has length 153 [2020-08-22 18:05:46,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:05:46,056 INFO L479 AbstractCegarLoop]: Abstraction has 276 states and 303 transitions. [2020-08-22 18:05:46,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:05:46,056 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 303 transitions. [2020-08-22 18:05:46,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 18:05:46,061 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:05:46,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:05:46,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:05:46,062 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:05:46,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:05:46,062 INFO L82 PathProgramCache]: Analyzing trace with hash -178714613, now seen corresponding path program 1 times [2020-08-22 18:05:46,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:05:46,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504074205] [2020-08-22 18:05:46,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:05:46,066 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:05:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:46,443 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:05:46,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:05:46,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:46,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:05:46,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:46,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:05:46,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:46,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:05:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:46,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:05:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:46,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 18:05:46,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:46,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 18:05:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:46,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 18:05:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:46,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:05:46,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504074205] [2020-08-22 18:05:46,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:05:46,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:05:46,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653314804] [2020-08-22 18:05:46,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:05:46,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:05:46,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:05:46,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:05:46,515 INFO L87 Difference]: Start difference. First operand 276 states and 303 transitions. Second operand 4 states. [2020-08-22 18:05:47,114 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:05:48,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:05:48,141 INFO L93 Difference]: Finished difference Result 434 states and 492 transitions. [2020-08-22 18:05:48,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 18:05:48,141 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-08-22 18:05:48,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:05:48,147 INFO L225 Difference]: With dead ends: 434 [2020-08-22 18:05:48,147 INFO L226 Difference]: Without dead ends: 304 [2020-08-22 18:05:48,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:05:48,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-08-22 18:05:48,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 266. [2020-08-22 18:05:48,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-08-22 18:05:48,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 290 transitions. [2020-08-22 18:05:48,248 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 290 transitions. Word has length 154 [2020-08-22 18:05:48,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:05:48,248 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 290 transitions. [2020-08-22 18:05:48,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:05:48,249 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 290 transitions. [2020-08-22 18:05:48,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-08-22 18:05:48,251 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:05:48,251 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] [2020-08-22 18:05:48,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:05:48,252 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:05:48,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:05:48,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1820602845, now seen corresponding path program 1 times [2020-08-22 18:05:48,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:05:48,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088778193] [2020-08-22 18:05:48,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:05:48,256 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:05:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:48,578 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:05:48,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:05:48,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:48,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:05:48,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:48,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:05:48,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:48,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:05:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:48,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:05:48,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:48,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 18:05:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:48,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 18:05:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:48,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 18:05:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:48,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:05:48,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088778193] [2020-08-22 18:05:48,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:05:48,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 18:05:48,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069923631] [2020-08-22 18:05:48,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 18:05:48,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:05:48,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 18:05:48,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 18:05:48,821 INFO L87 Difference]: Start difference. First operand 266 states and 290 transitions. Second operand 9 states. [2020-08-22 18:05:49,252 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:05:49,559 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:05:49,793 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:05:50,071 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:05:50,302 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:05:50,516 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:05:51,383 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:05:53,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:05:53,717 INFO L93 Difference]: Finished difference Result 724 states and 837 transitions. [2020-08-22 18:05:53,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 18:05:53,718 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 163 [2020-08-22 18:05:53,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:05:53,727 INFO L225 Difference]: With dead ends: 724 [2020-08-22 18:05:53,727 INFO L226 Difference]: Without dead ends: 568 [2020-08-22 18:05:53,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-08-22 18:05:53,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2020-08-22 18:05:53,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 497. [2020-08-22 18:05:53,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2020-08-22 18:05:53,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 560 transitions. [2020-08-22 18:05:53,924 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 560 transitions. Word has length 163 [2020-08-22 18:05:53,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:05:53,925 INFO L479 AbstractCegarLoop]: Abstraction has 497 states and 560 transitions. [2020-08-22 18:05:53,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 18:05:53,925 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 560 transitions. [2020-08-22 18:05:53,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-08-22 18:05:53,928 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:05:53,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:05:53,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 18:05:53,929 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:05:53,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:05:53,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1334837787, now seen corresponding path program 1 times [2020-08-22 18:05:53,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:05:53,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376276937] [2020-08-22 18:05:53,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:05:53,933 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:05:54,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:54,260 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:05:54,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:05:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:54,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:05:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:54,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:05:54,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:54,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:05:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:54,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:05:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:54,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-22 18:05:54,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:54,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-22 18:05:54,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:54,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-22 18:05:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:54,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 18:05:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:54,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:05:54,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376276937] [2020-08-22 18:05:54,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:05:54,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 18:05:54,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677875237] [2020-08-22 18:05:54,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 18:05:54,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:05:54,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 18:05:54,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 18:05:54,423 INFO L87 Difference]: Start difference. First operand 497 states and 560 transitions. Second operand 9 states. [2020-08-22 18:05:54,885 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:05:56,725 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:05:57,009 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:05:57,291 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:05:57,592 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:05:57,824 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:05:58,064 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:05:58,285 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:05:59,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:05:59,279 INFO L93 Difference]: Finished difference Result 1358 states and 1641 transitions. [2020-08-22 18:05:59,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 18:05:59,287 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 172 [2020-08-22 18:05:59,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:05:59,296 INFO L225 Difference]: With dead ends: 1358 [2020-08-22 18:05:59,296 INFO L226 Difference]: Without dead ends: 971 [2020-08-22 18:05:59,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-08-22 18:05:59,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2020-08-22 18:05:59,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 867. [2020-08-22 18:05:59,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 867 states. [2020-08-22 18:05:59,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1001 transitions. [2020-08-22 18:05:59,647 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1001 transitions. Word has length 172 [2020-08-22 18:05:59,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:05:59,648 INFO L479 AbstractCegarLoop]: Abstraction has 867 states and 1001 transitions. [2020-08-22 18:05:59,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 18:05:59,648 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1001 transitions. [2020-08-22 18:05:59,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-08-22 18:05:59,653 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:05:59,654 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] [2020-08-22 18:05:59,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 18:05:59,654 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:05:59,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:05:59,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1117798554, now seen corresponding path program 1 times [2020-08-22 18:05:59,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:05:59,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335740571] [2020-08-22 18:05:59,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:05:59,658 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:05:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:59,985 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:05:59,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:06:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:00,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:06:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:00,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:06:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:00,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:06:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:00,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:06:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:00,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-22 18:06:00,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:00,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 18:06:00,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:00,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 18:06:00,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:00,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-22 18:06:00,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:00,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-22 18:06:00,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:06:00,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:06:00,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335740571] [2020-08-22 18:06:00,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:06:00,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 18:06:00,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328652776] [2020-08-22 18:06:00,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 18:06:00,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:06:00,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 18:06:00,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 18:06:00,135 INFO L87 Difference]: Start difference. First operand 867 states and 1001 transitions. Second operand 6 states. [2020-08-22 18:06:00,877 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:06:03,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:06:03,115 INFO L93 Difference]: Finished difference Result 2006 states and 2416 transitions. [2020-08-22 18:06:03,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 18:06:03,116 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2020-08-22 18:06:03,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:06:03,124 INFO L225 Difference]: With dead ends: 2006 [2020-08-22 18:06:03,124 INFO L226 Difference]: Without dead ends: 1249 [2020-08-22 18:06:03,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-22 18:06:03,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2020-08-22 18:06:03,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1152. [2020-08-22 18:06:03,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1152 states. [2020-08-22 18:06:03,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1315 transitions. [2020-08-22 18:06:03,537 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1315 transitions. Word has length 177 [2020-08-22 18:06:03,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:06:03,537 INFO L479 AbstractCegarLoop]: Abstraction has 1152 states and 1315 transitions. [2020-08-22 18:06:03,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 18:06:03,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1315 transitions. [2020-08-22 18:06:03,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-08-22 18:06:03,541 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:06:03,541 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] [2020-08-22 18:06:03,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 18:06:03,541 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:06:03,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:06:03,542 INFO L82 PathProgramCache]: Analyzing trace with hash 654753658, now seen corresponding path program 1 times [2020-08-22 18:06:03,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:06:03,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855236170] [2020-08-22 18:06:03,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:06:03,544 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:06:03,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:06:03,593 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:06:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:06:03,638 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:06:03,827 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 18:06:03,827 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 18:06:03,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 18:06:03,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:06:03 BoogieIcfgContainer [2020-08-22 18:06:03,853 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:06:03,855 INFO L168 Benchmark]: Toolchain (without parser) took 22741.66 ms. Allocated memory was 145.8 MB in the beginning and 663.7 MB in the end (delta: 518.0 MB). Free memory was 101.8 MB in the beginning and 78.4 MB in the end (delta: 23.5 MB). Peak memory consumption was 541.5 MB. Max. memory is 7.1 GB. [2020-08-22 18:06:03,856 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 18:06:03,857 INFO L168 Benchmark]: CACSL2BoogieTranslator took 678.62 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 101.4 MB in the beginning and 167.5 MB in the end (delta: -66.1 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-08-22 18:06:03,857 INFO L168 Benchmark]: Boogie Preprocessor took 93.55 ms. Allocated memory is still 201.9 MB. Free memory was 167.5 MB in the beginning and 163.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-22 18:06:03,858 INFO L168 Benchmark]: RCFGBuilder took 1184.26 ms. Allocated memory was 201.9 MB in the beginning and 234.9 MB in the end (delta: 33.0 MB). Free memory was 163.4 MB in the beginning and 170.9 MB in the end (delta: -7.5 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. [2020-08-22 18:06:03,859 INFO L168 Benchmark]: TraceAbstraction took 20778.94 ms. Allocated memory was 234.9 MB in the beginning and 663.7 MB in the end (delta: 428.9 MB). Free memory was 169.5 MB in the beginning and 78.4 MB in the end (delta: 91.1 MB). Peak memory consumption was 520.0 MB. Max. memory is 7.1 GB. [2020-08-22 18:06:03,863 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 678.62 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 101.4 MB in the beginning and 167.5 MB in the end (delta: -66.1 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 93.55 ms. Allocated memory is still 201.9 MB. Free memory was 167.5 MB in the beginning and 163.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1184.26 ms. Allocated memory was 201.9 MB in the beginning and 234.9 MB in the end (delta: 33.0 MB). Free memory was 163.4 MB in the beginning and 170.9 MB in the end (delta: -7.5 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 20778.94 ms. Allocated memory was 234.9 MB in the beginning and 663.7 MB in the end (delta: 428.9 MB). Free memory was 169.5 MB in the beginning and 78.4 MB in the end (delta: 91.1 MB). Peak memory consumption was 520.0 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: [L49] int cleanupTimeShifts = 4; [L357] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L629] int pumpRunning = 0; [L630] int systemActive = 1; [L841] int waterLevel = 1; [L842] int methaneLevelCritical = 0; [L130] int retValue_acc ; [L131] int tmp ; [L135] FCALL select_helpers() [L136] FCALL select_features() [L137] CALL, EXPR valid_product() [L179] int retValue_acc ; [L182] retValue_acc = 1 [L183] return (retValue_acc); [L137] RET, EXPR valid_product() [L137] tmp = valid_product() [L139] COND TRUE \read(tmp) [L141] FCALL setup() [L142] CALL runTest() [L121] CALL test() [L556] int splverifierCounter ; [L557] int tmp ; [L558] int tmp___0 ; [L559] int tmp___1 ; [L560] int tmp___2 ; [L563] splverifierCounter = 0 [L565] COND TRUE 1 [L567] COND TRUE splverifierCounter < 4 [L573] tmp = __VERIFIER_nondet_int() [L575] COND TRUE \read(tmp) [L577] CALL waterRise() [L859] COND TRUE waterLevel < 2 [L860] waterLevel = waterLevel + 1 [L577] RET waterRise() [L583] tmp___0 = __VERIFIER_nondet_int() [L585] COND FALSE !(\read(tmp___0)) [L593] tmp___2 = __VERIFIER_nondet_int() [L595] COND FALSE !(\read(tmp___2)) [L599] tmp___1 = __VERIFIER_nondet_int() [L601] COND TRUE \read(tmp___1) [L603] CALL stopSystem() [L828] COND FALSE !(\read(pumpRunning)) [L835] systemActive = 0 [L603] RET stopSystem() [L610] CALL timeShift() [L637] COND FALSE !(\read(pumpRunning)) [L644] COND FALSE !(\read(systemActive)) [L652] CALL __utac_acc__Specification3_spec__1() [L936] int tmp ; [L937] int tmp___0 ; [L938] int tmp___1 ; [L942] CALL, EXPR isMethaneLevelCritical() [L880] int retValue_acc ; [L883] retValue_acc = methaneLevelCritical [L884] return (retValue_acc); [L942] RET, EXPR isMethaneLevelCritical() [L942] tmp = isMethaneLevelCritical() [L944] COND FALSE !(\read(tmp)) [L948] CALL, EXPR getWaterLevel() [L912] int retValue_acc ; [L915] retValue_acc = waterLevel [L916] return (retValue_acc); [L948] RET, EXPR getWaterLevel() [L948] tmp___0 = getWaterLevel() [L950] COND TRUE tmp___0 == 2 [L952] CALL, EXPR isPumpRunning() [L761] int retValue_acc ; [L764] retValue_acc = pumpRunning [L765] return (retValue_acc); [L952] RET, EXPR isPumpRunning() [L952] tmp___1 = isPumpRunning() [L954] COND FALSE !(\read(tmp___1)) [L958] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 639 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 20.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 16.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1308 SDtfs, 2065 SDslu, 1449 SDs, 0 SdLazy, 3888 SolverSat, 715 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1152occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 355 StatesRemovedByMinimization, 5 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...