/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_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 15:23:29,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 15:23:29,024 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 15:23:29,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 15:23:29,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 15:23:29,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 15:23:29,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 15:23:29,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 15:23:29,059 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 15:23:29,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 15:23:29,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 15:23:29,061 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 15:23:29,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 15:23:29,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 15:23:29,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 15:23:29,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 15:23:29,066 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 15:23:29,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 15:23:29,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 15:23:29,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 15:23:29,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 15:23:29,073 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 15:23:29,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 15:23:29,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 15:23:29,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 15:23:29,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 15:23:29,078 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 15:23:29,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 15:23:29,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 15:23:29,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 15:23:29,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 15:23:29,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 15:23:29,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 15:23:29,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 15:23:29,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 15:23:29,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 15:23:29,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 15:23:29,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 15:23:29,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 15:23:29,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 15:23:29,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 15:23:29,088 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 15:23:29,102 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 15:23:29,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 15:23:29,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 15:23:29,106 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 15:23:29,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 15:23:29,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 15:23:29,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 15:23:29,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 15:23:29,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 15:23:29,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 15:23:29,107 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 15:23:29,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 15:23:29,108 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 15:23:29,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 15:23:29,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 15:23:29,113 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 15:23:29,113 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 15:23:29,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 15:23:29,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:23:29,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 15:23:29,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 15:23:29,115 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 15:23:29,115 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 15:23:29,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 15:23:29,600 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 15:23:29,605 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 15:23:29,606 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 15:23:29,607 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 15:23:29,608 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product22.cil.c [2020-09-04 15:23:29,698 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c83feb6a/859de5990d7c47008f448d4dce8427f5/FLAG6cf12c617 [2020-09-04 15:23:30,308 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 15:23:30,309 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product22.cil.c [2020-09-04 15:23:30,325 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c83feb6a/859de5990d7c47008f448d4dce8427f5/FLAG6cf12c617 [2020-09-04 15:23:30,587 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c83feb6a/859de5990d7c47008f448d4dce8427f5 [2020-09-04 15:23:30,600 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 15:23:30,601 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 15:23:30,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 15:23:30,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 15:23:30,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 15:23:30,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:23:30" (1/1) ... [2020-09-04 15:23:30,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4365ba2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:30, skipping insertion in model container [2020-09-04 15:23:30,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:23:30" (1/1) ... [2020-09-04 15:23:30,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 15:23:30,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 15:23:31,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:23:31,077 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 15:23:31,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:23:31,314 INFO L208 MainTranslator]: Completed translation [2020-09-04 15:23:31,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:31 WrapperNode [2020-09-04 15:23:31,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 15:23:31,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 15:23:31,316 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 15:23:31,316 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 15:23:31,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:31" (1/1) ... [2020-09-04 15:23:31,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:31" (1/1) ... [2020-09-04 15:23:31,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:31" (1/1) ... [2020-09-04 15:23:31,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:31" (1/1) ... [2020-09-04 15:23:31,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:31" (1/1) ... [2020-09-04 15:23:31,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:31" (1/1) ... [2020-09-04 15:23:31,435 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:31" (1/1) ... [2020-09-04 15:23:31,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 15:23:31,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 15:23:31,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 15:23:31,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 15:23:31,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:23:31,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 15:23:31,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 15:23:31,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 15:23:31,583 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 15:23:31,583 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 15:23:31,584 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 15:23:31,584 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 15:23:31,584 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 15:23:31,584 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 15:23:31,584 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-04 15:23:31,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 15:23:31,585 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 15:23:31,586 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 15:23:31,586 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 15:23:31,586 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 15:23:31,586 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 15:23:31,586 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 15:23:31,587 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 15:23:31,587 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 15:23:31,588 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 15:23:31,589 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 15:23:31,589 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 15:23:31,592 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-04 15:23:31,592 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 15:23:31,592 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 15:23:31,592 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 15:23:31,592 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 15:23:31,593 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 15:23:31,593 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 15:23:31,593 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-04 15:23:31,593 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-04 15:23:31,593 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 15:23:31,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 15:23:31,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 15:23:31,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 15:23:31,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 15:23:31,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 15:23:31,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 15:23:31,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-04 15:23:31,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 15:23:31,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 15:23:31,595 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 15:23:31,595 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 15:23:31,595 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 15:23:31,596 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 15:23:31,596 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 15:23:31,596 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 15:23:31,596 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 15:23:31,596 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-04 15:23:31,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 15:23:31,597 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 15:23:31,597 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 15:23:31,597 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 15:23:31,597 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 15:23:31,597 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 15:23:31,598 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 15:23:31,598 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 15:23:31,598 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 15:23:31,598 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 15:23:31,599 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 15:23:31,599 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 15:23:31,599 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 15:23:31,599 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 15:23:31,599 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 15:23:31,599 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 15:23:31,600 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 15:23:31,600 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-04 15:23:31,600 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-04 15:23:31,600 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 15:23:31,600 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 15:23:31,600 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-04 15:23:31,601 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-04 15:23:31,601 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 15:23:31,601 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 15:23:31,601 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 15:23:31,601 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 15:23:31,601 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 15:23:31,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 15:23:31,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 15:23:31,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 15:23:31,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 15:23:31,603 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 15:23:31,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 15:23:31,603 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 15:23:31,604 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 15:23:31,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 15:23:31,604 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 15:23:31,605 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 15:23:31,605 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 15:23:31,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 15:23:31,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 15:23:31,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 15:23:32,747 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 15:23:32,748 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 15:23:32,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:23:32 BoogieIcfgContainer [2020-09-04 15:23:32,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 15:23:32,757 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 15:23:32,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 15:23:32,761 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 15:23:32,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 03:23:30" (1/3) ... [2020-09-04 15:23:32,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72bdfe30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:23:32, skipping insertion in model container [2020-09-04 15:23:32,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:31" (2/3) ... [2020-09-04 15:23:32,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72bdfe30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:23:32, skipping insertion in model container [2020-09-04 15:23:32,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:23:32" (3/3) ... [2020-09-04 15:23:32,765 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product22.cil.c [2020-09-04 15:23:32,779 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 15:23:32,792 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 15:23:32,818 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 15:23:32,847 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 15:23:32,847 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 15:23:32,847 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 15:23:32,848 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 15:23:32,848 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 15:23:32,848 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 15:23:32,848 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 15:23:32,848 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 15:23:32,872 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states. [2020-09-04 15:23:32,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-04 15:23:32,896 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:23:32,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:23:32,898 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:23:32,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:23:32,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1572596205, now seen corresponding path program 1 times [2020-09-04 15:23:32,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:23:32,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034052022] [2020-09-04 15:23:32,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:23:33,018 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:23:33,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:33,726 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:23:33,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:23:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:33,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:23:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:33,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:23:33,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:33,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:23:33,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:33,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:23:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:33,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:23:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:33,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:23:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:33,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-04 15:23:33,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:33,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:23:33,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034052022] [2020-09-04 15:23:33,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:23:33,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 15:23:33,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820014070] [2020-09-04 15:23:33,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 15:23:33,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:23:33,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 15:23:33,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:23:33,980 INFO L87 Difference]: Start difference. First operand 310 states. Second operand 3 states. [2020-09-04 15:23:35,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:23:35,353 INFO L93 Difference]: Finished difference Result 486 states and 580 transitions. [2020-09-04 15:23:35,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 15:23:35,355 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-04 15:23:35,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:23:35,376 INFO L225 Difference]: With dead ends: 486 [2020-09-04 15:23:35,376 INFO L226 Difference]: Without dead ends: 301 [2020-09-04 15:23:35,383 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 [2020-09-04 15:23:35,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-09-04 15:23:35,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 259. [2020-09-04 15:23:35,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-09-04 15:23:35,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 282 transitions. [2020-09-04 15:23:35,543 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 282 transitions. Word has length 153 [2020-09-04 15:23:35,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:23:35,544 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 282 transitions. [2020-09-04 15:23:35,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 15:23:35,545 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 282 transitions. [2020-09-04 15:23:35,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-04 15:23:35,549 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:23:35,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:23:35,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 15:23:35,550 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:23:35,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:23:35,551 INFO L82 PathProgramCache]: Analyzing trace with hash -197104449, now seen corresponding path program 1 times [2020-09-04 15:23:35,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:23:35,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95951872] [2020-09-04 15:23:35,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:23:35,555 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:23:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:35,951 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:23:35,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:23:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:35,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:23:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:35,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:23:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:36,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:23:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:36,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:23:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:36,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-04 15:23:36,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:36,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 15:23:36,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:36,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 15:23:36,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:36,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:23:36,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95951872] [2020-09-04 15:23:36,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:23:36,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 15:23:36,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19175774] [2020-09-04 15:23:36,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 15:23:36,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:23:36,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 15:23:36,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:23:36,038 INFO L87 Difference]: Start difference. First operand 259 states and 282 transitions. Second operand 4 states. [2020-09-04 15:23:36,688 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:23:37,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:23:37,728 INFO L93 Difference]: Finished difference Result 399 states and 451 transitions. [2020-09-04 15:23:37,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 15:23:37,730 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-04 15:23:37,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:23:37,734 INFO L225 Difference]: With dead ends: 399 [2020-09-04 15:23:37,734 INFO L226 Difference]: Without dead ends: 284 [2020-09-04 15:23:37,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 15:23:37,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-09-04 15:23:37,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 249. [2020-09-04 15:23:37,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-09-04 15:23:37,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 269 transitions. [2020-09-04 15:23:37,851 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 269 transitions. Word has length 154 [2020-09-04 15:23:37,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:23:37,852 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 269 transitions. [2020-09-04 15:23:37,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 15:23:37,852 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 269 transitions. [2020-09-04 15:23:37,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-04 15:23:37,855 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:23:37,855 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] [2020-09-04 15:23:37,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 15:23:37,856 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:23:37,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:23:37,856 INFO L82 PathProgramCache]: Analyzing trace with hash 2051029771, now seen corresponding path program 1 times [2020-09-04 15:23:37,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:23:37,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293834739] [2020-09-04 15:23:37,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:23:37,859 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:23:37,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:38,264 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:23:38,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:23:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:38,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:23:38,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:38,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:23:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:38,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:23:38,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:38,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:23:38,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:38,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 15:23:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:38,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-04 15:23:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:38,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-04 15:23:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:38,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-09-04 15:23:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:38,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:23:38,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293834739] [2020-09-04 15:23:38,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:23:38,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:23:38,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925607826] [2020-09-04 15:23:38,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:23:38,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:23:38,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:23:38,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:23:38,417 INFO L87 Difference]: Start difference. First operand 249 states and 269 transitions. Second operand 10 states. [2020-09-04 15:23:38,948 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:23:39,345 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:23:39,605 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:23:39,927 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:23:40,247 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:23:40,530 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:23:42,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:23:42,300 INFO L93 Difference]: Finished difference Result 445 states and 513 transitions. [2020-09-04 15:23:42,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 15:23:42,306 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 167 [2020-09-04 15:23:42,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:23:42,310 INFO L225 Difference]: With dead ends: 445 [2020-09-04 15:23:42,310 INFO L226 Difference]: Without dead ends: 306 [2020-09-04 15:23:42,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-09-04 15:23:42,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-09-04 15:23:42,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 249. [2020-09-04 15:23:42,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-09-04 15:23:42,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 268 transitions. [2020-09-04 15:23:42,387 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 268 transitions. Word has length 167 [2020-09-04 15:23:42,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:23:42,388 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 268 transitions. [2020-09-04 15:23:42,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:23:42,388 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 268 transitions. [2020-09-04 15:23:42,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-04 15:23:42,391 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:23:42,391 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:23:42,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 15:23:42,392 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:23:42,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:23:42,392 INFO L82 PathProgramCache]: Analyzing trace with hash -292228132, now seen corresponding path program 1 times [2020-09-04 15:23:42,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:23:42,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903243436] [2020-09-04 15:23:42,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:23:42,395 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:23:42,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:42,845 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:23:42,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:23:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:43,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:23:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:43,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:23:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:43,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:23:43,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:43,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:23:43,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:43,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 15:23:43,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:43,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:23:43,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:43,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:23:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:43,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:23:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:43,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-04 15:23:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:43,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-09-04 15:23:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:43,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-09-04 15:23:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:43,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:23:43,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903243436] [2020-09-04 15:23:43,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:23:43,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:23:43,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118411325] [2020-09-04 15:23:43,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:23:43,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:23:43,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:23:43,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:23:43,185 INFO L87 Difference]: Start difference. First operand 249 states and 268 transitions. Second operand 10 states. [2020-09-04 15:23:43,925 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:23:46,470 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:23:46,887 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:23:47,176 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:23:47,481 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:23:47,763 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:23:48,287 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:23:48,691 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:23:49,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:23:49,326 INFO L93 Difference]: Finished difference Result 689 states and 848 transitions. [2020-09-04 15:23:49,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-04 15:23:49,327 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 180 [2020-09-04 15:23:49,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:23:49,332 INFO L225 Difference]: With dead ends: 689 [2020-09-04 15:23:49,332 INFO L226 Difference]: Without dead ends: 550 [2020-09-04 15:23:49,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2020-09-04 15:23:49,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2020-09-04 15:23:49,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 382. [2020-09-04 15:23:49,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2020-09-04 15:23:49,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 424 transitions. [2020-09-04 15:23:49,475 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 424 transitions. Word has length 180 [2020-09-04 15:23:49,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:23:49,476 INFO L479 AbstractCegarLoop]: Abstraction has 382 states and 424 transitions. [2020-09-04 15:23:49,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:23:49,477 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 424 transitions. [2020-09-04 15:23:49,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-04 15:23:49,480 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:23:49,480 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:23:49,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 15:23:49,481 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:23:49,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:23:49,481 INFO L82 PathProgramCache]: Analyzing trace with hash 330228208, now seen corresponding path program 1 times [2020-09-04 15:23:49,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:23:49,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113031659] [2020-09-04 15:23:49,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:23:49,484 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:23:49,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:49,836 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:23:49,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:23:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:49,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:23:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:49,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:23:49,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:49,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:23:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:49,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:23:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:49,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-04 15:23:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:49,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:23:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:49,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-04 15:23:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:49,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-04 15:23:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:49,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:23:49,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:49,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:23:49,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:49,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-09-04 15:23:49,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:50,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-09-04 15:23:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:50,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 15:23:50,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:50,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:23:50,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [113031659] [2020-09-04 15:23:50,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:23:50,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 15:23:50,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342290135] [2020-09-04 15:23:50,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 15:23:50,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:23:50,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 15:23:50,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-04 15:23:50,090 INFO L87 Difference]: Start difference. First operand 382 states and 424 transitions. Second operand 7 states. [2020-09-04 15:23:50,853 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:23:51,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:23:51,811 INFO L93 Difference]: Finished difference Result 614 states and 718 transitions. [2020-09-04 15:23:51,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 15:23:51,812 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2020-09-04 15:23:51,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:23:51,815 INFO L225 Difference]: With dead ends: 614 [2020-09-04 15:23:51,816 INFO L226 Difference]: Without dead ends: 342 [2020-09-04 15:23:51,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-09-04 15:23:51,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-09-04 15:23:51,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 276. [2020-09-04 15:23:51,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-09-04 15:23:51,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 291 transitions. [2020-09-04 15:23:51,890 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 291 transitions. Word has length 190 [2020-09-04 15:23:51,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:23:51,890 INFO L479 AbstractCegarLoop]: Abstraction has 276 states and 291 transitions. [2020-09-04 15:23:51,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 15:23:51,890 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 291 transitions. [2020-09-04 15:23:51,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-04 15:23:51,893 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:23:51,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:23:51,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 15:23:51,894 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:23:51,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:23:51,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1645650045, now seen corresponding path program 1 times [2020-09-04 15:23:51,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:23:51,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552933599] [2020-09-04 15:23:51,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:23:51,897 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:23:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:23:51,976 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:23:52,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:23:52,054 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:23:52,234 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 15:23:52,235 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 15:23:52,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 15:23:52,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 03:23:52 BoogieIcfgContainer [2020-09-04 15:23:52,275 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 15:23:52,279 INFO L168 Benchmark]: Toolchain (without parser) took 21676.88 ms. Allocated memory was 145.2 MB in the beginning and 551.0 MB in the end (delta: 405.8 MB). Free memory was 101.7 MB in the beginning and 107.0 MB in the end (delta: -5.3 MB). Peak memory consumption was 400.5 MB. Max. memory is 7.1 GB. [2020-09-04 15:23:52,286 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 15:23:52,288 INFO L168 Benchmark]: CACSL2BoogieTranslator took 713.42 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 101.5 MB in the beginning and 172.6 MB in the end (delta: -71.1 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-09-04 15:23:52,289 INFO L168 Benchmark]: Boogie Preprocessor took 134.82 ms. Allocated memory is still 202.9 MB. Free memory was 172.6 MB in the beginning and 168.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-09-04 15:23:52,289 INFO L168 Benchmark]: RCFGBuilder took 1304.43 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 168.4 MB in the beginning and 178.0 MB in the end (delta: -9.6 MB). Peak memory consumption was 86.1 MB. Max. memory is 7.1 GB. [2020-09-04 15:23:52,290 INFO L168 Benchmark]: TraceAbstraction took 19518.42 ms. Allocated memory was 235.4 MB in the beginning and 551.0 MB in the end (delta: 315.6 MB). Free memory was 178.0 MB in the beginning and 107.0 MB in the end (delta: 70.9 MB). Peak memory consumption was 386.6 MB. Max. memory is 7.1 GB. [2020-09-04 15:23:52,293 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 145.2 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 713.42 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 101.5 MB in the beginning and 172.6 MB in the end (delta: -71.1 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.82 ms. Allocated memory is still 202.9 MB. Free memory was 172.6 MB in the beginning and 168.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1304.43 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 168.4 MB in the beginning and 178.0 MB in the end (delta: -9.6 MB). Peak memory consumption was 86.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 19518.42 ms. Allocated memory was 235.4 MB in the beginning and 551.0 MB in the end (delta: 315.6 MB). Free memory was 178.0 MB in the beginning and 107.0 MB in the end (delta: 70.9 MB). Peak memory consumption was 386.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 140]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L145] int cleanupTimeShifts = 4; [L286] int pumpRunning = 0; [L287] int systemActive = 1; [L709] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L224] int retValue_acc ; [L225] int tmp ; [L229] FCALL select_helpers() [L230] FCALL select_features() [L231] CALL, EXPR valid_product() [L273] int retValue_acc ; [L276] retValue_acc = 1 [L277] return (retValue_acc); [L231] RET, EXPR valid_product() [L231] tmp = valid_product() [L233] COND TRUE \read(tmp) [L235] FCALL setup() [L236] CALL runTest() [L215] CALL test() [L474] int splverifierCounter ; [L475] int tmp ; [L476] int tmp___0 ; [L477] int tmp___1 ; [L478] int tmp___2 ; [L481] splverifierCounter = 0 [L483] COND TRUE 1 [L485] COND TRUE splverifierCounter < 4 [L491] tmp = __VERIFIER_nondet_int() [L493] COND TRUE \read(tmp) [L495] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L495] RET waterRise() [L501] tmp___0 = __VERIFIER_nondet_int() [L503] COND FALSE !(\read(tmp___0)) [L511] tmp___2 = __VERIFIER_nondet_int() [L513] COND TRUE \read(tmp___2) [L515] CALL startSystem() [L468] systemActive = 1 [L515] RET startSystem() [L528] CALL timeShift() [L294] COND FALSE !(\read(pumpRunning)) [L301] COND TRUE \read(systemActive) [L303] CALL processEnvironment() [L349] int tmp ; [L352] COND FALSE !(\read(pumpRunning)) [L367] CALL processEnvironment__wrappee__lowWaterSensor() [L323] int tmp ; [L326] COND FALSE !(\read(pumpRunning)) [L341] FCALL processEnvironment__wrappee__base() [L367] RET processEnvironment__wrappee__lowWaterSensor() [L303] RET processEnvironment() [L309] CALL __utac_acc__Specification3_spec__1() [L907] int tmp ; [L908] int tmp___0 ; [L909] int tmp___1 ; [L913] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L913] RET, EXPR isMethaneLevelCritical() [L913] tmp = isMethaneLevelCritical() [L915] COND FALSE !(\read(tmp)) [L919] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L919] RET, EXPR getWaterLevel() [L919] tmp___0 = getWaterLevel() [L921] COND TRUE tmp___0 == 2 [L923] CALL, EXPR isPumpRunning() [L401] int retValue_acc ; [L404] retValue_acc = pumpRunning [L405] return (retValue_acc); [L923] RET, EXPR isPumpRunning() [L923] tmp___1 = isPumpRunning() [L925] COND FALSE !(\read(tmp___1)) [L929] CALL __automaton_fail() [L140] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 625 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 19.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 14.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1131 SDtfs, 2086 SDslu, 1405 SDs, 0 SdLazy, 3012 SolverSat, 663 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 171 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=382occurred 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: 0.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 368 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...