/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 15:03:31,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 15:03:31,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 15:03:31,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 15:03:31,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 15:03:31,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 15:03:31,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 15:03:31,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 15:03:31,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 15:03:31,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 15:03:31,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 15:03:31,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 15:03:31,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 15:03:31,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 15:03:31,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 15:03:31,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 15:03:31,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 15:03:31,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 15:03:31,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 15:03:31,563 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 15:03:31,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 15:03:31,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 15:03:31,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 15:03:31,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 15:03:31,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 15:03:31,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 15:03:31,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 15:03:31,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 15:03:31,574 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 15:03:31,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 15:03:31,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 15:03:31,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 15:03:31,578 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 15:03:31,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 15:03:31,580 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 15:03:31,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 15:03:31,581 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 15:03:31,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 15:03:31,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 15:03:31,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 15:03:31,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 15:03:31,584 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 15:03:31,595 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 15:03:31,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 15:03:31,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 15:03:31,597 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 15:03:31,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 15:03:31,598 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 15:03:31,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 15:03:31,598 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 15:03:31,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 15:03:31,598 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 15:03:31,599 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 15:03:31,599 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 15:03:31,599 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 15:03:31,599 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 15:03:31,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 15:03:31,600 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 15:03:31,600 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 15:03:31,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 15:03:31,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:03:31,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 15:03:31,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 15:03:31,601 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 15:03:31,601 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 15:03:32,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 15:03:32,073 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 15:03:32,078 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 15:03:32,080 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 15:03:32,080 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 15:03:32,082 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product56.cil.c [2020-09-04 15:03:32,165 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a668bea1/47e23f419a1f458ba526ad73b4f1dfcf/FLAGe673c80bc [2020-09-04 15:03:32,770 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 15:03:32,771 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product56.cil.c [2020-09-04 15:03:32,801 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a668bea1/47e23f419a1f458ba526ad73b4f1dfcf/FLAGe673c80bc [2020-09-04 15:03:33,050 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a668bea1/47e23f419a1f458ba526ad73b4f1dfcf [2020-09-04 15:03:33,064 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 15:03:33,066 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 15:03:33,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 15:03:33,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 15:03:33,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 15:03:33,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:03:33" (1/1) ... [2020-09-04 15:03:33,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1190dd1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:33, skipping insertion in model container [2020-09-04 15:03:33,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:03:33" (1/1) ... [2020-09-04 15:03:33,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 15:03:33,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 15:03:33,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:03:33,705 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 15:03:33,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:03:33,838 INFO L208 MainTranslator]: Completed translation [2020-09-04 15:03:33,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:33 WrapperNode [2020-09-04 15:03:33,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 15:03:33,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 15:03:33,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 15:03:33,841 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 15:03:33,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:33" (1/1) ... [2020-09-04 15:03:33,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:33" (1/1) ... [2020-09-04 15:03:33,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:33" (1/1) ... [2020-09-04 15:03:33,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:33" (1/1) ... [2020-09-04 15:03:33,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:33" (1/1) ... [2020-09-04 15:03:33,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:33" (1/1) ... [2020-09-04 15:03:33,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:33" (1/1) ... [2020-09-04 15:03:33,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 15:03:33,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 15:03:33,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 15:03:33,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 15:03:33,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:33" (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 15:03:34,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 15:03:34,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 15:03:34,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 15:03:34,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 15:03:34,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 15:03:34,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 15:03:34,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 15:03:34,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 15:03:34,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 15:03:34,043 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 15:03:34,044 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 15:03:34,045 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 15:03:34,045 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-04 15:03:34,045 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-04 15:03:34,045 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 15:03:34,046 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 15:03:34,046 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 15:03:34,046 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 15:03:34,047 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 15:03:34,047 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 15:03:34,049 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-04 15:03:34,050 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-04 15:03:34,053 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-04 15:03:34,053 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-04 15:03:34,054 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 15:03:34,054 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 15:03:34,054 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 15:03:34,054 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 15:03:34,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-04 15:03:34,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 15:03:34,055 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 15:03:34,055 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 15:03:34,055 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 15:03:34,055 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 15:03:34,055 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 15:03:34,056 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 15:03:34,056 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 15:03:34,056 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 15:03:34,057 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 15:03:34,057 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 15:03:34,057 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 15:03:34,057 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-04 15:03:34,058 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-04 15:03:34,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 15:03:34,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 15:03:34,058 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 15:03:34,059 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 15:03:34,059 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 15:03:34,059 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 15:03:34,059 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 15:03:34,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 15:03:34,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 15:03:34,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 15:03:34,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 15:03:34,060 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 15:03:34,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 15:03:34,061 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 15:03:34,061 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 15:03:34,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 15:03:34,061 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 15:03:34,061 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 15:03:34,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 15:03:34,062 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 15:03:34,062 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 15:03:34,062 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 15:03:34,062 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-04 15:03:34,062 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-04 15:03:34,062 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 15:03:34,063 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 15:03:34,063 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 15:03:34,063 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 15:03:34,063 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 15:03:34,064 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 15:03:34,064 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-04 15:03:34,064 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-04 15:03:34,064 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 15:03:34,064 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 15:03:34,065 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 15:03:34,065 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 15:03:34,065 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-04 15:03:34,066 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 15:03:34,067 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 15:03:34,067 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-04 15:03:34,068 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-04 15:03:34,068 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-04 15:03:34,069 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-04 15:03:34,069 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 15:03:34,069 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 15:03:34,070 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 15:03:34,070 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 15:03:34,070 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 15:03:34,070 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 15:03:34,070 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 15:03:34,071 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 15:03:34,071 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 15:03:34,071 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 15:03:34,071 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 15:03:34,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 15:03:34,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 15:03:34,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 15:03:35,430 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 15:03:35,431 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 15:03:35,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:03:35 BoogieIcfgContainer [2020-09-04 15:03:35,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 15:03:35,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 15:03:35,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 15:03:35,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 15:03:35,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 03:03:33" (1/3) ... [2020-09-04 15:03:35,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@341af51b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:03:35, skipping insertion in model container [2020-09-04 15:03:35,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:33" (2/3) ... [2020-09-04 15:03:35,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@341af51b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:03:35, skipping insertion in model container [2020-09-04 15:03:35,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:03:35" (3/3) ... [2020-09-04 15:03:35,448 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product56.cil.c [2020-09-04 15:03:35,459 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 15:03:35,470 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 15:03:35,493 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 15:03:35,520 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 15:03:35,520 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 15:03:35,520 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 15:03:35,520 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 15:03:35,521 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 15:03:35,521 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 15:03:35,521 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 15:03:35,521 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 15:03:35,545 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states. [2020-09-04 15:03:35,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-04 15:03:35,570 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:35,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:03:35,572 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:35,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:35,580 INFO L82 PathProgramCache]: Analyzing trace with hash 826882234, now seen corresponding path program 1 times [2020-09-04 15:03:35,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:35,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343682351] [2020-09-04 15:03:35,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:35,668 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:36,338 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:36,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:36,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:36,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:36,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:36,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:36,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:36,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:03:36,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:36,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-04 15:03:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:36,534 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 15:03:36,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343682351] [2020-09-04 15:03:36,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:36,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 15:03:36,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52547448] [2020-09-04 15:03:36,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 15:03:36,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:36,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 15:03:36,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:03:36,572 INFO L87 Difference]: Start difference. First operand 342 states. Second operand 3 states. [2020-09-04 15:03:38,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:38,131 INFO L93 Difference]: Finished difference Result 554 states and 662 transitions. [2020-09-04 15:03:38,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 15:03:38,133 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-04 15:03:38,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:38,154 INFO L225 Difference]: With dead ends: 554 [2020-09-04 15:03:38,155 INFO L226 Difference]: Without dead ends: 337 [2020-09-04 15:03:38,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 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 15:03:38,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-09-04 15:03:38,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 291. [2020-09-04 15:03:38,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2020-09-04 15:03:38,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 320 transitions. [2020-09-04 15:03:38,341 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 320 transitions. Word has length 142 [2020-09-04 15:03:38,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:38,342 INFO L479 AbstractCegarLoop]: Abstraction has 291 states and 320 transitions. [2020-09-04 15:03:38,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 15:03:38,343 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 320 transitions. [2020-09-04 15:03:38,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-04 15:03:38,353 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:38,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:03:38,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 15:03:38,354 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:38,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:38,357 INFO L82 PathProgramCache]: Analyzing trace with hash -820599246, now seen corresponding path program 1 times [2020-09-04 15:03:38,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:38,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508776223] [2020-09-04 15:03:38,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:38,361 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:38,858 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:38,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:38,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:38,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:38,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:38,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:38,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:38,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:03:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:38,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:03:38,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:38,937 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 15:03:38,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508776223] [2020-09-04 15:03:38,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:38,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 15:03:38,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368454308] [2020-09-04 15:03:38,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 15:03:38,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:38,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 15:03:38,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:03:38,941 INFO L87 Difference]: Start difference. First operand 291 states and 320 transitions. Second operand 4 states. [2020-09-04 15:03:39,567 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:40,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:40,872 INFO L93 Difference]: Finished difference Result 461 states and 525 transitions. [2020-09-04 15:03:40,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 15:03:40,873 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-04 15:03:40,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:40,880 INFO L225 Difference]: With dead ends: 461 [2020-09-04 15:03:40,880 INFO L226 Difference]: Without dead ends: 320 [2020-09-04 15:03:40,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 15:03:40,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-09-04 15:03:40,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 281. [2020-09-04 15:03:40,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-09-04 15:03:40,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 307 transitions. [2020-09-04 15:03:40,986 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 307 transitions. Word has length 143 [2020-09-04 15:03:40,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:40,987 INFO L479 AbstractCegarLoop]: Abstraction has 281 states and 307 transitions. [2020-09-04 15:03:40,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 15:03:40,987 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 307 transitions. [2020-09-04 15:03:40,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-04 15:03:40,990 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:40,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:03:40,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 15:03:40,991 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:40,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:40,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1576489327, now seen corresponding path program 1 times [2020-09-04 15:03:40,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:40,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114646206] [2020-09-04 15:03:40,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:40,995 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:41,382 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:41,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:41,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:41,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:41,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:41,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:41,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:41,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 15:03:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:41,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 15:03:41,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:41,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-04 15:03:41,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:41,552 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 15:03:41,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114646206] [2020-09-04 15:03:41,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:41,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:03:41,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024862770] [2020-09-04 15:03:41,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:03:41,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:41,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:03:41,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:03:41,556 INFO L87 Difference]: Start difference. First operand 281 states and 307 transitions. Second operand 10 states. [2020-09-04 15:03:42,072 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:42,459 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:42,801 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:03:43,099 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:43,389 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:03:43,674 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:44,630 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:47,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:47,790 INFO L93 Difference]: Finished difference Result 782 states and 917 transitions. [2020-09-04 15:03:47,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 15:03:47,791 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2020-09-04 15:03:47,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:47,800 INFO L225 Difference]: With dead ends: 782 [2020-09-04 15:03:47,800 INFO L226 Difference]: Without dead ends: 611 [2020-09-04 15:03:47,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-09-04 15:03:47,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2020-09-04 15:03:47,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 512. [2020-09-04 15:03:47,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2020-09-04 15:03:47,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 578 transitions. [2020-09-04 15:03:48,000 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 578 transitions. Word has length 156 [2020-09-04 15:03:48,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:48,001 INFO L479 AbstractCegarLoop]: Abstraction has 512 states and 578 transitions. [2020-09-04 15:03:48,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:03:48,001 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 578 transitions. [2020-09-04 15:03:48,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-04 15:03:48,004 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:48,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:03:48,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 15:03:48,005 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:48,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:48,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1953483698, now seen corresponding path program 1 times [2020-09-04 15:03:48,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:48,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392923504] [2020-09-04 15:03:48,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:48,009 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:48,396 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:48,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:48,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:48,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:48,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:48,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:48,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:48,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-04 15:03:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:48,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-04 15:03:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:48,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-04 15:03:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:48,573 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 15:03:48,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392923504] [2020-09-04 15:03:48,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:48,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:03:48,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045909934] [2020-09-04 15:03:48,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:03:48,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:48,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:03:48,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:03:48,575 INFO L87 Difference]: Start difference. First operand 512 states and 578 transitions. Second operand 9 states. [2020-09-04 15:03:49,141 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:50,710 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:51,063 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:03:51,561 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:51,883 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:52,219 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:52,645 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:03:52,997 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:53,719 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:55,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:55,269 INFO L93 Difference]: Finished difference Result 1442 states and 1734 transitions. [2020-09-04 15:03:55,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 15:03:55,270 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 161 [2020-09-04 15:03:55,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:55,278 INFO L225 Difference]: With dead ends: 1442 [2020-09-04 15:03:55,278 INFO L226 Difference]: Without dead ends: 1040 [2020-09-04 15:03:55,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-09-04 15:03:55,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2020-09-04 15:03:55,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 875. [2020-09-04 15:03:55,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 875 states. [2020-09-04 15:03:55,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1002 transitions. [2020-09-04 15:03:55,627 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1002 transitions. Word has length 161 [2020-09-04 15:03:55,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:55,628 INFO L479 AbstractCegarLoop]: Abstraction has 875 states and 1002 transitions. [2020-09-04 15:03:55,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:03:55,628 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1002 transitions. [2020-09-04 15:03:55,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-04 15:03:55,632 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:55,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:03:55,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 15:03:55,633 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:55,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:55,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1356616012, now seen corresponding path program 1 times [2020-09-04 15:03:55,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:55,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339886418] [2020-09-04 15:03:55,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:55,636 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:55,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:56,017 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:56,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:56,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:56,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:56,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:56,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:56,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:56,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:56,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:03:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:56,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 15:03:56,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:56,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-04 15:03:56,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:56,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-04 15:03:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:56,228 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 15:03:56,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339886418] [2020-09-04 15:03:56,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:56,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:03:56,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541681866] [2020-09-04 15:03:56,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:03:56,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:56,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:03:56,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:03:56,231 INFO L87 Difference]: Start difference. First operand 875 states and 1002 transitions. Second operand 10 states. [2020-09-04 15:03:56,729 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:58,151 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:58,465 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:03:58,791 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:59,115 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:03:59,402 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:04:00,281 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:04:00,564 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:04:00,956 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:04:02,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:04:02,537 INFO L93 Difference]: Finished difference Result 2250 states and 2781 transitions. [2020-09-04 15:04:02,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-04 15:04:02,538 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 166 [2020-09-04 15:04:02,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:04:02,547 INFO L225 Difference]: With dead ends: 2250 [2020-09-04 15:04:02,548 INFO L226 Difference]: Without dead ends: 1485 [2020-09-04 15:04:02,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-09-04 15:04:02,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2020-09-04 15:04:02,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 1217. [2020-09-04 15:04:02,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1217 states. [2020-09-04 15:04:02,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1409 transitions. [2020-09-04 15:04:02,905 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1409 transitions. Word has length 166 [2020-09-04 15:04:02,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:04:02,906 INFO L479 AbstractCegarLoop]: Abstraction has 1217 states and 1409 transitions. [2020-09-04 15:04:02,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:04:02,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1409 transitions. [2020-09-04 15:04:02,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-04 15:04:02,910 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:04:02,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:04:02,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 15:04:02,911 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:04:02,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:04:02,911 INFO L82 PathProgramCache]: Analyzing trace with hash 515628642, now seen corresponding path program 1 times [2020-09-04 15:04:02,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:04:02,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49134720] [2020-09-04 15:04:02,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:04:02,914 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:04:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:03,262 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:04:03,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:04:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:03,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:04:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:03,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:04:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:03,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:04:03,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:03,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:04:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:03,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:04:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:03,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:04:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:03,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 15:04:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:03,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:04:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:03,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:04:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:03,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:04:03,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:03,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:04:03,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:03,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:04:03,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:03,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-04 15:04:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:03,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-04 15:04:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:03,574 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 15:04:03,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49134720] [2020-09-04 15:04:03,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:04:03,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 15:04:03,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526075565] [2020-09-04 15:04:03,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 15:04:03,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:04:03,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 15:04:03,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-04 15:04:03,578 INFO L87 Difference]: Start difference. First operand 1217 states and 1409 transitions. Second operand 14 states. [2020-09-04 15:04:04,221 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:04:04,526 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:04:04,820 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:04:05,113 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:04:05,389 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:04:06,647 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:04:06,963 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:04:07,307 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:04:07,662 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:04:07,993 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:04:10,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:04:10,735 INFO L93 Difference]: Finished difference Result 2953 states and 3770 transitions. [2020-09-04 15:04:10,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-04 15:04:10,736 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 204 [2020-09-04 15:04:10,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:04:10,751 INFO L225 Difference]: With dead ends: 2953 [2020-09-04 15:04:10,751 INFO L226 Difference]: Without dead ends: 1846 [2020-09-04 15:04:10,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-09-04 15:04:10,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1846 states. [2020-09-04 15:04:11,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1846 to 1247. [2020-09-04 15:04:11,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1247 states. [2020-09-04 15:04:11,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1441 transitions. [2020-09-04 15:04:11,187 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1441 transitions. Word has length 204 [2020-09-04 15:04:11,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:04:11,187 INFO L479 AbstractCegarLoop]: Abstraction has 1247 states and 1441 transitions. [2020-09-04 15:04:11,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 15:04:11,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1441 transitions. [2020-09-04 15:04:11,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-04 15:04:11,191 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:04:11,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:04:11,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 15:04:11,192 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:04:11,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:04:11,192 INFO L82 PathProgramCache]: Analyzing trace with hash 101997250, now seen corresponding path program 1 times [2020-09-04 15:04:11,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:04:11,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460530024] [2020-09-04 15:04:11,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:04:11,195 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:04:11,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:11,533 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:04:11,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:04:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:11,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:04:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:11,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:04:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:11,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:04:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:11,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:04:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:11,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:04:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:11,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:04:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:11,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 15:04:11,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:11,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:04:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:11,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:04:11,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:11,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:04:11,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:11,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:04:11,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:11,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:04:11,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:11,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-04 15:04:11,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:11,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-04 15:04:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:11,793 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 15:04:11,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460530024] [2020-09-04 15:04:11,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:04:11,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 15:04:11,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049918043] [2020-09-04 15:04:11,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 15:04:11,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:04:11,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 15:04:11,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:04:11,796 INFO L87 Difference]: Start difference. First operand 1247 states and 1441 transitions. Second operand 11 states. [2020-09-04 15:04:13,387 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:04:13,744 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:04:14,096 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 15:04:14,451 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:04:14,789 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:04:15,093 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:04:17,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:04:17,365 INFO L93 Difference]: Finished difference Result 2995 states and 3739 transitions. [2020-09-04 15:04:17,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-04 15:04:17,365 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 204 [2020-09-04 15:04:17,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:04:17,376 INFO L225 Difference]: With dead ends: 2995 [2020-09-04 15:04:17,377 INFO L226 Difference]: Without dead ends: 1858 [2020-09-04 15:04:17,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-09-04 15:04:17,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2020-09-04 15:04:17,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1279. [2020-09-04 15:04:17,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1279 states. [2020-09-04 15:04:17,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1473 transitions. [2020-09-04 15:04:17,755 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1473 transitions. Word has length 204 [2020-09-04 15:04:17,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:04:17,756 INFO L479 AbstractCegarLoop]: Abstraction has 1279 states and 1473 transitions. [2020-09-04 15:04:17,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 15:04:17,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1473 transitions. [2020-09-04 15:04:17,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-04 15:04:17,761 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:04:17,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:04:17,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 15:04:17,761 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:04:17,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:04:17,762 INFO L82 PathProgramCache]: Analyzing trace with hash 446110533, now seen corresponding path program 1 times [2020-09-04 15:04:17,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:04:17,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728148371] [2020-09-04 15:04:17,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:04:17,765 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:04:17,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:18,067 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:04:18,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:04:18,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:18,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:04:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:18,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:04:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:18,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:04:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:18,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:04:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:18,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:04:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:18,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:04:18,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:18,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 15:04:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:18,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:04:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:18,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:04:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:18,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:04:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:18,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:04:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:18,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:04:18,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:18,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-04 15:04:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:18,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-04 15:04:18,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:18,386 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 15:04:18,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728148371] [2020-09-04 15:04:18,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:04:18,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 15:04:18,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055002879] [2020-09-04 15:04:18,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 15:04:18,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:04:18,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 15:04:18,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-04 15:04:18,389 INFO L87 Difference]: Start difference. First operand 1279 states and 1473 transitions. Second operand 8 states. [2020-09-04 15:04:18,938 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:04:19,590 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:04:24,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:04:24,709 INFO L93 Difference]: Finished difference Result 4593 states and 5883 transitions. [2020-09-04 15:04:24,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-04 15:04:24,709 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 204 [2020-09-04 15:04:24,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:04:24,728 INFO L225 Difference]: With dead ends: 4593 [2020-09-04 15:04:24,728 INFO L226 Difference]: Without dead ends: 3424 [2020-09-04 15:04:24,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2020-09-04 15:04:24,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3424 states. [2020-09-04 15:04:25,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3424 to 2499. [2020-09-04 15:04:25,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2499 states. [2020-09-04 15:04:25,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2499 states to 2499 states and 2905 transitions. [2020-09-04 15:04:25,878 INFO L78 Accepts]: Start accepts. Automaton has 2499 states and 2905 transitions. Word has length 204 [2020-09-04 15:04:25,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:04:25,879 INFO L479 AbstractCegarLoop]: Abstraction has 2499 states and 2905 transitions. [2020-09-04 15:04:25,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 15:04:25,879 INFO L276 IsEmpty]: Start isEmpty. Operand 2499 states and 2905 transitions. [2020-09-04 15:04:25,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-04 15:04:25,884 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:04:25,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:04:25,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 15:04:25,885 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:04:25,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:04:25,885 INFO L82 PathProgramCache]: Analyzing trace with hash 2057395573, now seen corresponding path program 1 times [2020-09-04 15:04:25,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:04:25,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237785357] [2020-09-04 15:04:25,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:04:25,889 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:04:25,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:04:25,970 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:04:26,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:04:26,045 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:04:26,312 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 15:04:26,312 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 15:04:26,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 15:04:26,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 03:04:26 BoogieIcfgContainer [2020-09-04 15:04:26,342 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 15:04:26,344 INFO L168 Benchmark]: Toolchain (without parser) took 53278.90 ms. Allocated memory was 138.9 MB in the beginning and 1.1 GB in the end (delta: 923.3 MB). Free memory was 102.3 MB in the beginning and 764.0 MB in the end (delta: -661.8 MB). Peak memory consumption was 261.5 MB. Max. memory is 7.1 GB. [2020-09-04 15:04:26,345 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 15:04:26,346 INFO L168 Benchmark]: CACSL2BoogieTranslator took 772.73 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 102.1 MB in the beginning and 169.6 MB in the end (delta: -67.5 MB). Peak memory consumption was 29.4 MB. Max. memory is 7.1 GB. [2020-09-04 15:04:26,347 INFO L168 Benchmark]: Boogie Preprocessor took 101.23 ms. Allocated memory is still 202.9 MB. Free memory was 169.6 MB in the beginning and 165.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-09-04 15:04:26,348 INFO L168 Benchmark]: RCFGBuilder took 1496.51 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 165.5 MB in the beginning and 171.0 MB in the end (delta: -5.5 MB). Peak memory consumption was 82.1 MB. Max. memory is 7.1 GB. [2020-09-04 15:04:26,349 INFO L168 Benchmark]: TraceAbstraction took 50902.42 ms. Allocated memory was 236.5 MB in the beginning and 1.1 GB in the end (delta: 825.8 MB). Free memory was 171.0 MB in the beginning and 764.0 MB in the end (delta: -593.1 MB). Peak memory consumption was 232.7 MB. Max. memory is 7.1 GB. [2020-09-04 15:04:26,352 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 772.73 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 102.1 MB in the beginning and 169.6 MB in the end (delta: -67.5 MB). Peak memory consumption was 29.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 101.23 ms. Allocated memory is still 202.9 MB. Free memory was 169.6 MB in the beginning and 165.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1496.51 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 165.5 MB in the beginning and 171.0 MB in the end (delta: -5.5 MB). Peak memory consumption was 82.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 50902.42 ms. Allocated memory was 236.5 MB in the beginning and 1.1 GB in the end (delta: 825.8 MB). Free memory was 171.0 MB in the beginning and 764.0 MB in the end (delta: -593.1 MB). Peak memory consumption was 232.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 806]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L490] int pumpRunning = 0; [L491] int systemActive = 1; [L811] int cleanupTimeShifts = 4; [L908] int waterLevel = 1; [L909] int methaneLevelCritical = 0; [L884] int retValue_acc ; [L885] int tmp ; [L889] FCALL select_helpers() [L890] FCALL select_features() [L891] CALL, EXPR valid_product() [L766] int retValue_acc ; [L769] retValue_acc = 1 [L770] return (retValue_acc); [L891] RET, EXPR valid_product() [L891] tmp = valid_product() [L893] COND TRUE \read(tmp) [L895] FCALL setup() [L896] CALL runTest() [L878] CALL test() [L413] int splverifierCounter ; [L414] int tmp ; [L415] int tmp___0 ; [L416] int tmp___1 ; [L417] int tmp___2 ; [L420] splverifierCounter = 0 [L422] COND TRUE 1 [L424] COND TRUE splverifierCounter < 4 [L430] tmp = __VERIFIER_nondet_int() [L432] COND TRUE \read(tmp) [L434] CALL waterRise() [L926] COND TRUE waterLevel < 2 [L927] waterLevel = waterLevel + 1 [L434] RET waterRise() [L440] tmp___0 = __VERIFIER_nondet_int() [L442] COND TRUE \read(tmp___0) [L444] CALL changeMethaneLevel() [L938] COND FALSE !(\read(methaneLevelCritical)) [L941] methaneLevelCritical = 1 [L444] RET changeMethaneLevel() [L450] tmp___2 = __VERIFIER_nondet_int() [L452] COND TRUE \read(tmp___2) [L454] CALL startSystem() [L732] systemActive = 1 [L454] RET startSystem() [L469] CALL timeShift() [L498] COND FALSE !(\read(pumpRunning)) [L505] COND TRUE \read(systemActive) [L507] CALL processEnvironment() [L579] int tmp ; [L582] COND FALSE !(\read(pumpRunning)) [L597] CALL processEnvironment__wrappee__lowWaterSensor() [L553] int tmp ; [L556] COND FALSE !(\read(pumpRunning)) [L571] CALL processEnvironment__wrappee__highWaterSensor() [L527] int tmp ; [L530] COND TRUE ! pumpRunning [L532] CALL, EXPR isHighWaterLevel() [L676] int retValue_acc ; [L677] int tmp ; [L678] int tmp___0 ; [L682] CALL, EXPR isHighWaterSensorDry() [L988] int retValue_acc ; [L991] COND FALSE !(waterLevel < 2) [L995] retValue_acc = 0 [L996] return (retValue_acc); [L682] RET, EXPR isHighWaterSensorDry() [L682] tmp = isHighWaterSensorDry() [L684] COND FALSE !(\read(tmp)) [L687] tmp___0 = 1 [L689] retValue_acc = tmp___0 [L690] return (retValue_acc); [L532] RET, EXPR isHighWaterLevel() [L532] tmp = isHighWaterLevel() [L534] COND TRUE \read(tmp) [L536] CALL activatePump() [L607] pumpRunning = 1 [L536] RET activatePump() [L571] RET processEnvironment__wrappee__highWaterSensor() [L597] RET processEnvironment__wrappee__lowWaterSensor() [L507] RET processEnvironment() [L513] CALL __utac_acc__Specification1_spec__1() [L777] int tmp ; [L778] int tmp___0 ; [L782] CALL, EXPR isMethaneLevelCritical() [L947] int retValue_acc ; [L950] retValue_acc = methaneLevelCritical [L951] return (retValue_acc); [L782] RET, EXPR isMethaneLevelCritical() [L782] tmp = isMethaneLevelCritical() [L784] COND TRUE \read(tmp) [L786] CALL, EXPR isPumpRunning() [L631] int retValue_acc ; [L634] retValue_acc = pumpRunning [L635] return (retValue_acc); [L786] RET, EXPR isPumpRunning() [L786] tmp___0 = isPumpRunning() [L788] COND TRUE \read(tmp___0) [L790] CALL __automaton_fail() [L806] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 659 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 50.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 41.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2249 SDtfs, 4800 SDslu, 4381 SDs, 0 SdLazy, 10279 SolverSat, 1619 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 21.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 342 GetRequests, 211 SyntacticMatches, 4 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 15.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2499occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 2720 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...