/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_product16.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:04:17,739 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:04:17,742 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:04:17,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 18:04:17,781 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 18:04:17,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 18:04:17,783 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 18:04:17,785 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 18:04:17,787 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 18:04:17,787 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 18:04:17,788 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 18:04:17,789 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 18:04:17,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:04:17,791 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:04:17,792 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:04:17,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:04:17,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:04:17,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:04:17,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:04:17,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:04:17,800 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:04:17,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:04:17,802 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:04:17,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:04:17,805 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 18:04:17,805 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 18:04:17,806 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 18:04:17,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 18:04:17,807 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 18:04:17,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 18:04:17,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 18:04:17,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 18:04:17,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 18:04:17,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 18:04:17,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 18:04:17,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 18:04:17,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 18:04:17,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 18:04:17,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 18:04:17,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 18:04:17,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 18:04:17,815 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 18:04:17,824 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:04:17,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:04:17,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:04:17,826 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:04:17,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:04:17,826 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:04:17,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:04:17,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:04:17,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:04:17,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:04:17,827 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:04:17,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:04:17,828 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:04:17,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:04:17,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:04:17,828 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:04:17,828 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:04:17,829 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:04:17,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:04:17,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:04:17,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:04:17,829 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:04:17,830 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:04:18,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:04:18,134 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:04:18,138 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:04:18,140 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:04:18,140 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:04:18,141 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product16.cil.c [2020-08-22 18:04:18,201 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71dc387d7/f54e5126510a4c61a3f21791b2c50fed/FLAG07d0ab13a [2020-08-22 18:04:18,648 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:04:18,648 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product16.cil.c [2020-08-22 18:04:18,662 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71dc387d7/f54e5126510a4c61a3f21791b2c50fed/FLAG07d0ab13a [2020-08-22 18:04:18,950 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71dc387d7/f54e5126510a4c61a3f21791b2c50fed [2020-08-22 18:04:18,959 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:04:18,961 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:04:18,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:04:18,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:04:18,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:04:18,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:04:18" (1/1) ... [2020-08-22 18:04:18,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2397e867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:18, skipping insertion in model container [2020-08-22 18:04:18,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:04:18" (1/1) ... [2020-08-22 18:04:18,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:04:19,032 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:04:19,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:04:19,366 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:04:19,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:04:19,598 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:04:19,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:19 WrapperNode [2020-08-22 18:04:19,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:04:19,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:04:19,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:04:19,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:04:19,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:19" (1/1) ... [2020-08-22 18:04:19,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:19" (1/1) ... [2020-08-22 18:04:19,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:19" (1/1) ... [2020-08-22 18:04:19,636 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:19" (1/1) ... [2020-08-22 18:04:19,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:19" (1/1) ... [2020-08-22 18:04:19,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:19" (1/1) ... [2020-08-22 18:04:19,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:19" (1/1) ... [2020-08-22 18:04:19,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:04:19,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:04:19,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:04:19,735 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:04:19,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:19" (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 18:04:19,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:04:19,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:04:19,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 18:04:19,817 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 18:04:19,817 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 18:04:19,818 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 18:04:19,818 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 18:04:19,818 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 18:04:19,818 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:04:19,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 18:04:19,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 18:04:19,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 18:04:19,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 18:04:19,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 18:04:19,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 18:04:19,820 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 18:04:19,820 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 18:04:19,821 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 18:04:19,821 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 18:04:19,821 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2020-08-22 18:04:19,822 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 18:04:19,822 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 18:04:19,824 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 18:04:19,825 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 18:04:19,825 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 18:04:19,825 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 18:04:19,825 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 18:04:19,825 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 18:04:19,825 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 18:04:19,826 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 18:04:19,826 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 18:04:19,826 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 18:04:19,826 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 18:04:19,826 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 18:04:19,826 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 18:04:19,826 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 18:04:19,827 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 18:04:19,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 18:04:19,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:04:19,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 18:04:19,827 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 18:04:19,827 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 18:04:19,827 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 18:04:19,828 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 18:04:19,828 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 18:04:19,828 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 18:04:19,828 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 18:04:19,828 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 18:04:19,828 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 18:04:19,829 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 18:04:19,829 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 18:04:19,830 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 18:04:19,830 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 18:04:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 18:04:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:04:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 18:04:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 18:04:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 18:04:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 18:04:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 18:04:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 18:04:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 18:04:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 18:04:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 18:04:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 18:04:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 18:04:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 18:04:19,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 18:04:19,833 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 18:04:19,833 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 18:04:19,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 18:04:19,833 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 18:04:19,833 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 18:04:19,833 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 18:04:19,834 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 18:04:19,834 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 18:04:19,834 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 18:04:19,835 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 18:04:19,835 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 18:04:19,835 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 18:04:19,836 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 18:04:19,836 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 18:04:19,837 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 18:04:19,837 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 18:04:19,837 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2020-08-22 18:04:19,837 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 18:04:19,838 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 18:04:19,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:04:19,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 18:04:19,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:04:21,080 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:04:21,080 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 18:04:21,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:04:21 BoogieIcfgContainer [2020-08-22 18:04:21,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:04:21,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:04:21,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:04:21,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:04:21,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:04:18" (1/3) ... [2020-08-22 18:04:21,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d74bf3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:04:21, skipping insertion in model container [2020-08-22 18:04:21,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:19" (2/3) ... [2020-08-22 18:04:21,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d74bf3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:04:21, skipping insertion in model container [2020-08-22 18:04:21,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:04:21" (3/3) ... [2020-08-22 18:04:21,095 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product16.cil.c [2020-08-22 18:04:21,106 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:04:21,115 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:04:21,129 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:04:21,151 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:04:21,151 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:04:21,151 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:04:21,151 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:04:21,151 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:04:21,152 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:04:21,152 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:04:21,152 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:04:21,172 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states. [2020-08-22 18:04:21,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-08-22 18:04:21,192 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:04:21,194 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 18:04:21,194 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:04:21,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:04:21,201 INFO L82 PathProgramCache]: Analyzing trace with hash -2058846521, now seen corresponding path program 1 times [2020-08-22 18:04:21,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:04:21,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377186244] [2020-08-22 18:04:21,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:04:21,285 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:04:21,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:21,968 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:04:21,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:04:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:22,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:04:22,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:22,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:04:22,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:22,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:04:22,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:22,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:04:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:22,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 18:04:22,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:22,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 18:04:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:22,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 18:04:22,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:22,198 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 18:04:22,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377186244] [2020-08-22 18:04:22,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:04:22,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:04:22,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898086386] [2020-08-22 18:04:22,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:04:22,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:04:22,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:04:22,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:04:22,245 INFO L87 Difference]: Start difference. First operand 295 states. Second operand 3 states. [2020-08-22 18:04:23,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:04:23,532 INFO L93 Difference]: Finished difference Result 436 states and 524 transitions. [2020-08-22 18:04:23,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:04:23,534 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-08-22 18:04:23,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:04:23,562 INFO L225 Difference]: With dead ends: 436 [2020-08-22 18:04:23,562 INFO L226 Difference]: Without dead ends: 276 [2020-08-22 18:04:23,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:04:23,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-08-22 18:04:23,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 234. [2020-08-22 18:04:23,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-08-22 18:04:23,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 254 transitions. [2020-08-22 18:04:23,712 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 254 transitions. Word has length 153 [2020-08-22 18:04:23,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:04:23,715 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 254 transitions. [2020-08-22 18:04:23,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:04:23,715 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 254 transitions. [2020-08-22 18:04:23,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 18:04:23,726 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:04:23,726 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 18:04:23,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:04:23,727 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:04:23,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:04:23,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1620128513, now seen corresponding path program 1 times [2020-08-22 18:04:23,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:04:23,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712883869] [2020-08-22 18:04:23,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:04:23,732 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:04:23,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:24,169 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:04:24,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:04:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:24,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:04:24,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:24,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:04:24,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:24,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:04:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:24,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:04:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:24,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 18:04:24,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:24,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 18:04:24,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:24,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 18:04:24,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:24,287 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 18:04:24,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712883869] [2020-08-22 18:04:24,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:04:24,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:04:24,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552669917] [2020-08-22 18:04:24,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:04:24,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:04:24,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:04:24,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:04:24,291 INFO L87 Difference]: Start difference. First operand 234 states and 254 transitions. Second operand 4 states. [2020-08-22 18:04:24,895 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:04:25,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:04:25,629 INFO L93 Difference]: Finished difference Result 343 states and 387 transitions. [2020-08-22 18:04:25,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 18:04:25,630 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-08-22 18:04:25,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:04:25,634 INFO L225 Difference]: With dead ends: 343 [2020-08-22 18:04:25,635 INFO L226 Difference]: Without dead ends: 259 [2020-08-22 18:04:25,637 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 18:04:25,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-08-22 18:04:25,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 224. [2020-08-22 18:04:25,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-08-22 18:04:25,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 241 transitions. [2020-08-22 18:04:25,707 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 241 transitions. Word has length 154 [2020-08-22 18:04:25,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:04:25,707 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 241 transitions. [2020-08-22 18:04:25,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:04:25,708 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 241 transitions. [2020-08-22 18:04:25,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-08-22 18:04:25,710 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:04:25,710 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] [2020-08-22 18:04:25,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:04:25,711 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:04:25,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:04:25,711 INFO L82 PathProgramCache]: Analyzing trace with hash 43350617, now seen corresponding path program 1 times [2020-08-22 18:04:25,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:04:25,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754678636] [2020-08-22 18:04:25,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:04:25,714 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:04:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:26,119 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:04:26,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:04:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:26,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:04:26,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:26,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:04:26,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:26,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:04:26,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:26,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:04:26,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:26,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 18:04:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:26,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 18:04:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:26,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 18:04:26,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:26,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-22 18:04:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:26,300 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 18:04:26,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754678636] [2020-08-22 18:04:26,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:04:26,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 18:04:26,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528064885] [2020-08-22 18:04:26,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 18:04:26,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:04:26,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 18:04:26,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 18:04:26,304 INFO L87 Difference]: Start difference. First operand 224 states and 241 transitions. Second operand 10 states. [2020-08-22 18:04:26,767 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:04:27,097 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:04:27,345 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 18:04:27,602 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:04:27,863 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:04:28,152 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:04:29,016 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:04:31,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:04:31,023 INFO L93 Difference]: Finished difference Result 614 states and 719 transitions. [2020-08-22 18:04:31,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 18:04:31,024 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 167 [2020-08-22 18:04:31,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:04:31,031 INFO L225 Difference]: With dead ends: 614 [2020-08-22 18:04:31,032 INFO L226 Difference]: Without dead ends: 500 [2020-08-22 18:04:31,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-08-22 18:04:31,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-08-22 18:04:31,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 409. [2020-08-22 18:04:31,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2020-08-22 18:04:31,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 458 transitions. [2020-08-22 18:04:31,178 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 458 transitions. Word has length 167 [2020-08-22 18:04:31,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:04:31,178 INFO L479 AbstractCegarLoop]: Abstraction has 409 states and 458 transitions. [2020-08-22 18:04:31,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 18:04:31,179 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 458 transitions. [2020-08-22 18:04:31,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-08-22 18:04:31,182 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:04:31,182 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 18:04:31,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 18:04:31,182 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:04:31,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:04:31,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1596285256, now seen corresponding path program 1 times [2020-08-22 18:04:31,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:04:31,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992012567] [2020-08-22 18:04:31,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:04:31,186 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:04:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:31,448 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:04:31,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:04:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:31,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:04:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:31,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:04:31,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:31,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:04:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:31,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:04:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:31,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-22 18:04:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:31,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-22 18:04:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:31,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-22 18:04:31,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:31,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 18:04:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:31,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:04:31,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992012567] [2020-08-22 18:04:31,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:04:31,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 18:04:31,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060889422] [2020-08-22 18:04:31,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 18:04:31,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:04:31,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 18:04:31,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 18:04:31,591 INFO L87 Difference]: Start difference. First operand 409 states and 458 transitions. Second operand 9 states. [2020-08-22 18:04:32,098 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:04:33,660 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:04:33,948 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:04:34,211 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:04:34,498 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:04:34,744 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:04:34,988 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:04:35,233 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:04:35,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:04:35,961 INFO L93 Difference]: Finished difference Result 1085 states and 1315 transitions. [2020-08-22 18:04:35,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 18:04:35,962 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 172 [2020-08-22 18:04:35,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:04:35,969 INFO L225 Difference]: With dead ends: 1085 [2020-08-22 18:04:35,970 INFO L226 Difference]: Without dead ends: 786 [2020-08-22 18:04:35,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-08-22 18:04:35,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2020-08-22 18:04:36,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 687. [2020-08-22 18:04:36,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 687 states. [2020-08-22 18:04:36,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 793 transitions. [2020-08-22 18:04:36,171 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 793 transitions. Word has length 172 [2020-08-22 18:04:36,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:04:36,172 INFO L479 AbstractCegarLoop]: Abstraction has 687 states and 793 transitions. [2020-08-22 18:04:36,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 18:04:36,172 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 793 transitions. [2020-08-22 18:04:36,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-08-22 18:04:36,176 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:04:36,177 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 18:04:36,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 18:04:36,177 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:04:36,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:04:36,178 INFO L82 PathProgramCache]: Analyzing trace with hash -469830621, now seen corresponding path program 1 times [2020-08-22 18:04:36,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:04:36,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683477683] [2020-08-22 18:04:36,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:04:36,181 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:04:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:36,515 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:04:36,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:04:36,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:36,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:04:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:36,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:04:36,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:36,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:04:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:36,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:04:36,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:36,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-22 18:04:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:36,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 18:04:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:36,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 18:04:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:36,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-22 18:04:36,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:36,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-22 18:04:36,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:36,619 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 18:04:36,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683477683] [2020-08-22 18:04:36,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:04:36,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 18:04:36,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499928159] [2020-08-22 18:04:36,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 18:04:36,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:04:36,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 18:04:36,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 18:04:36,621 INFO L87 Difference]: Start difference. First operand 687 states and 793 transitions. Second operand 6 states. [2020-08-22 18:04:37,087 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:04:38,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:04:38,068 INFO L93 Difference]: Finished difference Result 1204 states and 1445 transitions. [2020-08-22 18:04:38,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 18:04:38,073 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2020-08-22 18:04:38,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:04:38,077 INFO L225 Difference]: With dead ends: 1204 [2020-08-22 18:04:38,078 INFO L226 Difference]: Without dead ends: 627 [2020-08-22 18:04:38,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-22 18:04:38,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-08-22 18:04:38,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 550. [2020-08-22 18:04:38,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-08-22 18:04:38,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 601 transitions. [2020-08-22 18:04:38,285 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 601 transitions. Word has length 177 [2020-08-22 18:04:38,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:04:38,286 INFO L479 AbstractCegarLoop]: Abstraction has 550 states and 601 transitions. [2020-08-22 18:04:38,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 18:04:38,286 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 601 transitions. [2020-08-22 18:04:38,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-08-22 18:04:38,289 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:04:38,290 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 18:04:38,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 18:04:38,290 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:04:38,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:04:38,290 INFO L82 PathProgramCache]: Analyzing trace with hash 204325415, now seen corresponding path program 1 times [2020-08-22 18:04:38,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:04:38,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26766282] [2020-08-22 18:04:38,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:04:38,293 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:04:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:04:38,353 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:04:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:04:38,410 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:04:38,573 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 18:04:38,573 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 18:04:38,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 18:04:38,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:04:38 BoogieIcfgContainer [2020-08-22 18:04:38,599 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:04:38,601 INFO L168 Benchmark]: Toolchain (without parser) took 19639.73 ms. Allocated memory was 138.4 MB in the beginning and 629.1 MB in the end (delta: 490.7 MB). Free memory was 100.9 MB in the beginning and 388.2 MB in the end (delta: -287.3 MB). Peak memory consumption was 203.4 MB. Max. memory is 7.1 GB. [2020-08-22 18:04:38,602 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.4 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 18:04:38,603 INFO L168 Benchmark]: CACSL2BoogieTranslator took 636.63 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 100.7 MB in the beginning and 173.2 MB in the end (delta: -72.5 MB). Peak memory consumption was 29.4 MB. Max. memory is 7.1 GB. [2020-08-22 18:04:38,604 INFO L168 Benchmark]: Boogie Preprocessor took 134.71 ms. Allocated memory is still 202.4 MB. Free memory was 173.2 MB in the beginning and 168.7 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-08-22 18:04:38,605 INFO L168 Benchmark]: RCFGBuilder took 1352.48 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 168.7 MB in the beginning and 181.4 MB in the end (delta: -12.7 MB). Peak memory consumption was 87.4 MB. Max. memory is 7.1 GB. [2020-08-22 18:04:38,605 INFO L168 Benchmark]: TraceAbstraction took 17510.73 ms. Allocated memory was 234.4 MB in the beginning and 629.1 MB in the end (delta: 394.8 MB). Free memory was 180.0 MB in the beginning and 388.2 MB in the end (delta: -208.2 MB). Peak memory consumption was 186.6 MB. Max. memory is 7.1 GB. [2020-08-22 18:04:38,610 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.4 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 636.63 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 100.7 MB in the beginning and 173.2 MB in the end (delta: -72.5 MB). Peak memory consumption was 29.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.71 ms. Allocated memory is still 202.4 MB. Free memory was 173.2 MB in the beginning and 168.7 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1352.48 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 168.7 MB in the beginning and 181.4 MB in the end (delta: -12.7 MB). Peak memory consumption was 87.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 17510.73 ms. Allocated memory was 234.4 MB in the beginning and 629.1 MB in the end (delta: 394.8 MB). Free memory was 180.0 MB in the beginning and 388.2 MB in the end (delta: -208.2 MB). Peak memory consumption was 186.6 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; [L322] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L596] int pumpRunning = 0; [L597] int systemActive = 1; [L806] int waterLevel = 1; [L807] int methaneLevelCritical = 0; [L130] int retValue_acc ; [L131] int tmp ; [L135] FCALL select_helpers() [L136] FCALL select_features() [L137] CALL, EXPR valid_product() [L796] int retValue_acc ; [L799] retValue_acc = 1 [L800] 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() [L522] int splverifierCounter ; [L523] int tmp ; [L524] int tmp___0 ; [L525] int tmp___1 ; [L526] int tmp___2 ; [L529] splverifierCounter = 0 [L531] COND TRUE 1 [L533] COND TRUE splverifierCounter < 4 [L539] tmp = __VERIFIER_nondet_int() [L541] COND TRUE \read(tmp) [L543] CALL waterRise() [L824] COND TRUE waterLevel < 2 [L825] waterLevel = waterLevel + 1 [L543] RET waterRise() [L549] tmp___0 = __VERIFIER_nondet_int() [L551] COND FALSE !(\read(tmp___0)) [L559] tmp___2 = __VERIFIER_nondet_int() [L561] COND FALSE !(\read(tmp___2)) [L567] tmp___1 = __VERIFIER_nondet_int() [L569] COND TRUE \read(tmp___1) [L571] CALL stopSystem() [L750] COND FALSE !(\read(pumpRunning)) [L757] systemActive = 0 [L571] RET stopSystem() [L578] CALL timeShift() [L604] COND FALSE !(\read(pumpRunning)) [L611] COND FALSE !(\read(systemActive)) [L619] CALL __utac_acc__Specification3_spec__1() [L887] int tmp ; [L888] int tmp___0 ; [L889] int tmp___1 ; [L893] CALL, EXPR isMethaneLevelCritical() [L845] int retValue_acc ; [L848] retValue_acc = methaneLevelCritical [L849] return (retValue_acc); [L893] RET, EXPR isMethaneLevelCritical() [L893] tmp = isMethaneLevelCritical() [L895] COND FALSE !(\read(tmp)) [L899] CALL, EXPR getWaterLevel() [L877] int retValue_acc ; [L880] retValue_acc = waterLevel [L881] return (retValue_acc); [L899] RET, EXPR getWaterLevel() [L899] tmp___0 = getWaterLevel() [L901] COND TRUE tmp___0 == 2 [L903] CALL, EXPR isPumpRunning() [L702] int retValue_acc ; [L705] retValue_acc = pumpRunning [L706] return (retValue_acc); [L903] RET, EXPR isPumpRunning() [L903] tmp___1 = isPumpRunning() [L905] COND FALSE !(\read(tmp___1)) [L909] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 609 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 17.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 13.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1096 SDtfs, 1773 SDslu, 1538 SDs, 0 SdLazy, 2969 SolverSat, 641 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=687occurred 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: 0.7s AutomataMinimizationTime, 5 MinimizatonAttempts, 344 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...