/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 00:02:02,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:02:02,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:02:02,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 00:02:02,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 00:02:02,232 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 00:02:02,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 00:02:02,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 00:02:02,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 00:02:02,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 00:02:02,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 00:02:02,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 00:02:02,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 00:02:02,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 00:02:02,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 00:02:02,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 00:02:02,261 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 00:02:02,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 00:02:02,271 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 00:02:02,278 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 00:02:02,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 00:02:02,283 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 00:02:02,284 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 00:02:02,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 00:02:02,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 00:02:02,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 00:02:02,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 00:02:02,303 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 00:02:02,304 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 00:02:02,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 00:02:02,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 00:02:02,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 00:02:02,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 00:02:02,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 00:02:02,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 00:02:02,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 00:02:02,311 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 00:02:02,311 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 00:02:02,311 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 00:02:02,312 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 00:02:02,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 00:02:02,314 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 00:02:02,335 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:02:02,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:02:02,340 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:02:02,340 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:02:02,340 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:02:02,340 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:02:02,341 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:02:02,341 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:02:02,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:02:02,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:02:02,342 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:02:02,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:02:02,343 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:02:02,343 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:02:02,343 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:02:02,343 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:02:02,344 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:02:02,344 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:02:02,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:02:02,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:02:02,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:02:02,345 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:02:02,345 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:02:02,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:02:02,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:02:02,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:02:02,788 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:02:02,789 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:02:02,790 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product36.cil.c [2020-11-07 00:02:02,875 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d4410c1d/97cde60f218e4f4c8852b5c357ff35c0/FLAGdc1869b0e [2020-11-07 00:02:03,577 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:02:03,578 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product36.cil.c [2020-11-07 00:02:03,595 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d4410c1d/97cde60f218e4f4c8852b5c357ff35c0/FLAGdc1869b0e [2020-11-07 00:02:03,854 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d4410c1d/97cde60f218e4f4c8852b5c357ff35c0 [2020-11-07 00:02:03,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:02:03,871 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:02:03,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:02:03,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:02:03,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:02:03,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:02:03" (1/1) ... [2020-11-07 00:02:03,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@122f16a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:02:03, skipping insertion in model container [2020-11-07 00:02:03,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:02:03" (1/1) ... [2020-11-07 00:02:03,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:02:03,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:02:04,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:02:04,276 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:02:04,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:02:04,463 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:02:04,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:02:04 WrapperNode [2020-11-07 00:02:04,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:02:04,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:02:04,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:02:04,465 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:02:04,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:02:04" (1/1) ... [2020-11-07 00:02:04,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:02:04" (1/1) ... [2020-11-07 00:02:04,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:02:04" (1/1) ... [2020-11-07 00:02:04,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:02:04" (1/1) ... [2020-11-07 00:02:04,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:02:04" (1/1) ... [2020-11-07 00:02:04,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:02:04" (1/1) ... [2020-11-07 00:02:04,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:02:04" (1/1) ... [2020-11-07 00:02:04,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:02:04,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:02:04,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:02:04,555 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:02:04,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:02:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:02:04,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:02:04,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:02:04,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-11-07 00:02:04,649 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:02:04,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-11-07 00:02:04,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-11-07 00:02:04,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-11-07 00:02:04,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-11-07 00:02:04,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-11-07 00:02:04,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-11-07 00:02:04,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-11-07 00:02:04,651 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-11-07 00:02:04,651 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-11-07 00:02:04,651 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-11-07 00:02:04,651 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-11-07 00:02:04,651 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-11-07 00:02:04,652 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-11-07 00:02:04,652 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-11-07 00:02:04,652 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-11-07 00:02:04,652 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-11-07 00:02:04,652 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-11-07 00:02:04,653 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-11-07 00:02:04,653 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-11-07 00:02:04,653 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-11-07 00:02:04,653 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-11-07 00:02:04,653 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-11-07 00:02:04,654 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-11-07 00:02:04,654 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-11-07 00:02:04,654 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-11-07 00:02:04,654 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-11-07 00:02:04,654 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-11-07 00:02:04,655 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-11-07 00:02:04,655 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-11-07 00:02:04,655 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-11-07 00:02:04,655 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:02:04,655 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-11-07 00:02:04,656 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-11-07 00:02:04,656 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-11-07 00:02:04,656 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-11-07 00:02:04,656 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-11-07 00:02:04,656 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:02:04,657 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:02:04,657 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:02:04,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:02:04,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 00:02:04,676 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-11-07 00:02:04,676 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-11-07 00:02:04,676 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 00:02:04,676 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-07 00:02:04,676 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-11-07 00:02:04,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 00:02:04,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-07 00:02:04,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:02:04,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-07 00:02:04,681 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-11-07 00:02:04,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:02:04,681 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-11-07 00:02:04,682 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-11-07 00:02:04,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:02:04,682 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-11-07 00:02:04,682 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-11-07 00:02:04,682 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-11-07 00:02:04,682 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-11-07 00:02:04,683 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-11-07 00:02:04,683 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-11-07 00:02:04,683 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-11-07 00:02:04,683 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-11-07 00:02:04,683 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-11-07 00:02:04,683 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-11-07 00:02:04,684 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-11-07 00:02:04,684 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-11-07 00:02:04,684 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-11-07 00:02:04,684 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-11-07 00:02:04,684 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-11-07 00:02:04,684 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-11-07 00:02:04,685 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-11-07 00:02:04,685 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-11-07 00:02:04,685 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-11-07 00:02:04,686 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-11-07 00:02:04,686 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-11-07 00:02:04,687 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-11-07 00:02:04,687 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-11-07 00:02:04,687 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-11-07 00:02:04,687 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-11-07 00:02:04,687 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-11-07 00:02:04,687 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-11-07 00:02:04,688 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-11-07 00:02:04,688 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-11-07 00:02:04,688 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-11-07 00:02:04,688 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:02:04,688 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-11-07 00:02:04,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:02:04,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:02:04,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:02:06,174 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:02:06,174 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-07 00:02:06,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:02:06 BoogieIcfgContainer [2020-11-07 00:02:06,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:02:06,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:02:06,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:02:06,186 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:02:06,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:02:03" (1/3) ... [2020-11-07 00:02:06,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce57c2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:02:06, skipping insertion in model container [2020-11-07 00:02:06,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:02:04" (2/3) ... [2020-11-07 00:02:06,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce57c2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:02:06, skipping insertion in model container [2020-11-07 00:02:06,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:02:06" (3/3) ... [2020-11-07 00:02:06,191 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product36.cil.c [2020-11-07 00:02:06,207 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:02:06,212 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-11-07 00:02:06,228 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-07 00:02:06,262 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:02:06,262 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:02:06,262 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:02:06,262 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:02:06,263 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:02:06,263 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:02:06,264 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:02:06,264 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:02:06,289 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states. [2020-11-07 00:02:06,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-11-07 00:02:06,311 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:02:06,312 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] [2020-11-07 00:02:06,313 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:02:06,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:02:06,319 INFO L82 PathProgramCache]: Analyzing trace with hash -2137129796, now seen corresponding path program 1 times [2020-11-07 00:02:06,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:02:06,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747910188] [2020-11-07 00:02:06,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:02:06,406 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:02:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:07,176 WARN L194 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-07 00:02:07,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:02:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:07,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-07 00:02:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:07,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-07 00:02:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:07,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-07 00:02:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:07,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 00:02:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:07,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-11-07 00:02:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:07,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-11-07 00:02:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:07,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-11-07 00:02:07,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:07,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:02:07,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747910188] [2020-11-07 00:02:07,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:02:07,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 00:02:07,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594657111] [2020-11-07 00:02:07,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 00:02:07,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:02:07,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 00:02:07,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 00:02:07,358 INFO L87 Difference]: Start difference. First operand 317 states. Second operand 3 states. [2020-11-07 00:02:09,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:02:09,154 INFO L93 Difference]: Finished difference Result 480 states and 569 transitions. [2020-11-07 00:02:09,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 00:02:09,158 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-11-07 00:02:09,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:02:09,182 INFO L225 Difference]: With dead ends: 480 [2020-11-07 00:02:09,182 INFO L226 Difference]: Without dead ends: 299 [2020-11-07 00:02:09,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 00:02:09,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-11-07 00:02:09,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 257. [2020-11-07 00:02:09,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-11-07 00:02:09,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 277 transitions. [2020-11-07 00:02:09,360 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 277 transitions. Word has length 159 [2020-11-07 00:02:09,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:02:09,361 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 277 transitions. [2020-11-07 00:02:09,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 00:02:09,361 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 277 transitions. [2020-11-07 00:02:09,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-11-07 00:02:09,366 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:02:09,366 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] [2020-11-07 00:02:09,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:02:09,367 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:02:09,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:02:09,368 INFO L82 PathProgramCache]: Analyzing trace with hash 559352818, now seen corresponding path program 1 times [2020-11-07 00:02:09,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:02:09,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747628325] [2020-11-07 00:02:09,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:02:09,373 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:02:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:09,873 WARN L194 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-07 00:02:09,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:02:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:09,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-07 00:02:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:09,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-07 00:02:09,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:09,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-07 00:02:09,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:09,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 00:02:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:09,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-11-07 00:02:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:09,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-11-07 00:02:09,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:09,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-11-07 00:02:09,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:09,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:02:09,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747628325] [2020-11-07 00:02:09,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:02:09,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:02:09,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646873567] [2020-11-07 00:02:09,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:02:09,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:02:09,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:02:09,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:02:09,977 INFO L87 Difference]: Start difference. First operand 257 states and 277 transitions. Second operand 4 states. [2020-11-07 00:02:10,920 WARN L194 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-07 00:02:12,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:02:12,150 INFO L93 Difference]: Finished difference Result 381 states and 426 transitions. [2020-11-07 00:02:12,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-07 00:02:12,151 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-11-07 00:02:12,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:02:12,156 INFO L225 Difference]: With dead ends: 381 [2020-11-07 00:02:12,156 INFO L226 Difference]: Without dead ends: 282 [2020-11-07 00:02:12,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:02:12,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-11-07 00:02:12,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 247. [2020-11-07 00:02:12,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-11-07 00:02:12,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 264 transitions. [2020-11-07 00:02:12,268 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 264 transitions. Word has length 160 [2020-11-07 00:02:12,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:02:12,269 INFO L481 AbstractCegarLoop]: Abstraction has 247 states and 264 transitions. [2020-11-07 00:02:12,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:02:12,269 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 264 transitions. [2020-11-07 00:02:12,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-11-07 00:02:12,272 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:02:12,272 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] [2020-11-07 00:02:12,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 00:02:12,273 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:02:12,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:02:12,274 INFO L82 PathProgramCache]: Analyzing trace with hash -84099843, now seen corresponding path program 1 times [2020-11-07 00:02:12,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:02:12,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592828648] [2020-11-07 00:02:12,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:02:12,278 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:02:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:12,791 WARN L194 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-07 00:02:12,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:02:12,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:12,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-07 00:02:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:12,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-07 00:02:12,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:12,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-07 00:02:12,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:12,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 00:02:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:12,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-11-07 00:02:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:12,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 00:02:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:12,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-11-07 00:02:12,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:12,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-11-07 00:02:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:12,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:02:12,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592828648] [2020-11-07 00:02:12,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:02:12,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-07 00:02:12,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32990119] [2020-11-07 00:02:12,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 00:02:12,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:02:12,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 00:02:12,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-07 00:02:12,994 INFO L87 Difference]: Start difference. First operand 247 states and 264 transitions. Second operand 10 states. [2020-11-07 00:02:13,763 WARN L194 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-07 00:02:14,278 WARN L194 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-07 00:02:14,730 WARN L194 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-11-07 00:02:15,131 WARN L194 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-07 00:02:15,582 WARN L194 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-07 00:02:15,995 WARN L194 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-07 00:02:17,218 WARN L194 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-07 00:02:20,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:02:20,141 INFO L93 Difference]: Finished difference Result 674 states and 779 transitions. [2020-11-07 00:02:20,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-07 00:02:20,147 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 173 [2020-11-07 00:02:20,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:02:20,152 INFO L225 Difference]: With dead ends: 674 [2020-11-07 00:02:20,152 INFO L226 Difference]: Without dead ends: 542 [2020-11-07 00:02:20,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-11-07 00:02:20,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2020-11-07 00:02:20,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 437. [2020-11-07 00:02:20,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-11-07 00:02:20,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 482 transitions. [2020-11-07 00:02:20,410 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 482 transitions. Word has length 173 [2020-11-07 00:02:20,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:02:20,411 INFO L481 AbstractCegarLoop]: Abstraction has 437 states and 482 transitions. [2020-11-07 00:02:20,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 00:02:20,411 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 482 transitions. [2020-11-07 00:02:20,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-11-07 00:02:20,415 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:02:20,415 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] [2020-11-07 00:02:20,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 00:02:20,415 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:02:20,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:02:20,416 INFO L82 PathProgramCache]: Analyzing trace with hash 573342591, now seen corresponding path program 1 times [2020-11-07 00:02:20,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:02:20,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011309516] [2020-11-07 00:02:20,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:02:20,420 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:02:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:20,818 WARN L194 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-07 00:02:20,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:02:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:20,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-07 00:02:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:20,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-07 00:02:20,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:20,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-07 00:02:20,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:20,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 00:02:20,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:20,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-11-07 00:02:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:20,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-11-07 00:02:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:20,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-11-07 00:02:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:21,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-11-07 00:02:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:21,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:02:21,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011309516] [2020-11-07 00:02:21,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:02:21,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-07 00:02:21,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519347273] [2020-11-07 00:02:21,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-07 00:02:21,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:02:21,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-07 00:02:21,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-07 00:02:21,066 INFO L87 Difference]: Start difference. First operand 437 states and 482 transitions. Second operand 9 states. [2020-11-07 00:02:21,721 WARN L194 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-07 00:02:23,901 WARN L194 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-07 00:02:24,326 WARN L194 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-07 00:02:24,810 WARN L194 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-07 00:02:25,304 WARN L194 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-07 00:02:25,690 WARN L194 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-07 00:02:26,142 WARN L194 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-07 00:02:26,545 WARN L194 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-07 00:02:27,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:02:27,623 INFO L93 Difference]: Finished difference Result 1154 states and 1378 transitions. [2020-11-07 00:02:27,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-07 00:02:27,629 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 178 [2020-11-07 00:02:27,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:02:27,638 INFO L225 Difference]: With dead ends: 1154 [2020-11-07 00:02:27,638 INFO L226 Difference]: Without dead ends: 832 [2020-11-07 00:02:27,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-11-07 00:02:27,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2020-11-07 00:02:27,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 733. [2020-11-07 00:02:27,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-11-07 00:02:27,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 829 transitions. [2020-11-07 00:02:27,980 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 829 transitions. Word has length 178 [2020-11-07 00:02:27,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:02:27,981 INFO L481 AbstractCegarLoop]: Abstraction has 733 states and 829 transitions. [2020-11-07 00:02:27,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-07 00:02:27,981 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 829 transitions. [2020-11-07 00:02:27,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-11-07 00:02:27,986 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:02:27,986 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] [2020-11-07 00:02:27,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 00:02:27,987 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:02:27,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:02:27,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1832905147, now seen corresponding path program 1 times [2020-11-07 00:02:27,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:02:27,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557346061] [2020-11-07 00:02:27,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:02:27,991 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:02:28,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:28,376 WARN L194 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-07 00:02:28,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:02:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:28,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-07 00:02:28,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:28,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-07 00:02:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:28,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-07 00:02:28,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:28,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 00:02:28,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:28,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-11-07 00:02:28,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:28,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 00:02:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:28,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-11-07 00:02:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:28,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-11-07 00:02:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:28,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-11-07 00:02:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:02:28,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:02:28,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557346061] [2020-11-07 00:02:28,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:02:28,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 00:02:28,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693762890] [2020-11-07 00:02:28,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 00:02:28,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:02:28,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 00:02:28,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-07 00:02:28,546 INFO L87 Difference]: Start difference. First operand 733 states and 829 transitions. Second operand 6 states. [2020-11-07 00:02:29,251 WARN L194 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-07 00:02:31,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:02:31,936 INFO L93 Difference]: Finished difference Result 1715 states and 2028 transitions. [2020-11-07 00:02:31,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-07 00:02:31,937 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 183 [2020-11-07 00:02:31,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:02:31,945 INFO L225 Difference]: With dead ends: 1715 [2020-11-07 00:02:31,945 INFO L226 Difference]: Without dead ends: 1097 [2020-11-07 00:02:31,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-11-07 00:02:31,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2020-11-07 00:02:32,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 1016. [2020-11-07 00:02:32,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1016 states. [2020-11-07 00:02:32,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1153 transitions. [2020-11-07 00:02:32,409 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1153 transitions. Word has length 183 [2020-11-07 00:02:32,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:02:32,410 INFO L481 AbstractCegarLoop]: Abstraction has 1016 states and 1153 transitions. [2020-11-07 00:02:32,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 00:02:32,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1153 transitions. [2020-11-07 00:02:32,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-11-07 00:02:32,413 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:02:32,413 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] [2020-11-07 00:02:32,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 00:02:32,414 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:02:32,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:02:32,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1989490845, now seen corresponding path program 1 times [2020-11-07 00:02:32,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:02:32,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401530139] [2020-11-07 00:02:32,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:02:32,418 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:02:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:02:32,491 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:02:32,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:02:32,560 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:02:32,776 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 00:02:32,776 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 00:02:32,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 00:02:32,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:02:32 BoogieIcfgContainer [2020-11-07 00:02:32,801 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 00:02:32,803 INFO L168 Benchmark]: Toolchain (without parser) took 28936.76 ms. Allocated memory was 152.0 MB in the beginning and 571.5 MB in the end (delta: 419.4 MB). Free memory was 127.6 MB in the beginning and 529.1 MB in the end (delta: -401.5 MB). Peak memory consumption was 285.9 MB. Max. memory is 8.0 GB. [2020-11-07 00:02:32,804 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 152.0 MB. Free memory is still 127.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:02:32,805 INFO L168 Benchmark]: CACSL2BoogieTranslator took 586.37 ms. Allocated memory is still 152.0 MB. Free memory was 127.0 MB in the beginning and 106.1 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-11-07 00:02:32,806 INFO L168 Benchmark]: Boogie Preprocessor took 88.94 ms. Allocated memory is still 152.0 MB. Free memory was 106.1 MB in the beginning and 102.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-11-07 00:02:32,807 INFO L168 Benchmark]: RCFGBuilder took 1624.12 ms. Allocated memory was 152.0 MB in the beginning and 184.5 MB in the end (delta: 32.5 MB). Free memory was 102.1 MB in the beginning and 124.6 MB in the end (delta: -22.5 MB). Peak memory consumption was 29.8 MB. Max. memory is 8.0 GB. [2020-11-07 00:02:32,808 INFO L168 Benchmark]: TraceAbstraction took 26618.14 ms. Allocated memory was 184.5 MB in the beginning and 571.5 MB in the end (delta: 386.9 MB). Free memory was 124.1 MB in the beginning and 529.1 MB in the end (delta: -405.1 MB). Peak memory consumption was 248.7 MB. Max. memory is 8.0 GB. [2020-11-07 00:02:32,811 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 152.0 MB. Free memory is still 127.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 586.37 ms. Allocated memory is still 152.0 MB. Free memory was 127.0 MB in the beginning and 106.1 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 88.94 ms. Allocated memory is still 152.0 MB. Free memory was 106.1 MB in the beginning and 102.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1624.12 ms. Allocated memory was 152.0 MB in the beginning and 184.5 MB in the end (delta: 32.5 MB). Free memory was 102.1 MB in the beginning and 124.6 MB in the end (delta: -22.5 MB). Peak memory consumption was 29.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 26618.14 ms. Allocated memory was 184.5 MB in the beginning and 571.5 MB in the end (delta: 386.9 MB). Free memory was 124.1 MB in the beginning and 529.1 MB in the end (delta: -405.1 MB). Peak memory consumption was 248.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L220] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L428] int pumpRunning = 0; [L429] int systemActive = 1; [L677] int waterLevel = 1; [L678] int methaneLevelCritical = 0; [L771] int cleanupTimeShifts = 4; [L847] int retValue_acc ; [L848] int tmp ; [L852] FCALL select_helpers() [L853] FCALL select_features() [L854] CALL, EXPR valid_product() [L896] int retValue_acc ; [L899] retValue_acc = 1 [L900] return (retValue_acc); [L854] RET, EXPR valid_product() [L854] tmp = valid_product() [L856] COND TRUE \read(tmp) [L858] FCALL setup() [L859] CALL runTest() [L838] CALL test() [L608] int splverifierCounter ; [L609] int tmp ; [L610] int tmp___0 ; [L611] int tmp___1 ; [L612] int tmp___2 ; [L615] splverifierCounter = 0 [L617] COND TRUE 1 [L619] COND TRUE splverifierCounter < 4 [L625] tmp = __VERIFIER_nondet_int() [L627] COND TRUE \read(tmp) [L629] CALL waterRise() [L695] COND TRUE waterLevel < 2 [L696] waterLevel = waterLevel + 1 [L629] RET waterRise() [L635] tmp___0 = __VERIFIER_nondet_int() [L637] COND FALSE !(\read(tmp___0)) [L645] tmp___2 = __VERIFIER_nondet_int() [L647] COND FALSE !(\read(tmp___2)) [L653] tmp___1 = __VERIFIER_nondet_int() [L655] COND TRUE \read(tmp___1) [L657] CALL stopSystem() [L584] COND FALSE !(\read(pumpRunning)) [L591] systemActive = 0 [L657] RET stopSystem() [L664] CALL timeShift() [L436] COND FALSE !(\read(pumpRunning)) [L443] COND FALSE !(\read(systemActive)) [L451] CALL __utac_acc__Specification3_spec__1() [L906] int tmp ; [L907] int tmp___0 ; [L908] int tmp___1 ; [L912] CALL, EXPR isMethaneLevelCritical() [L716] int retValue_acc ; [L719] retValue_acc = methaneLevelCritical [L720] return (retValue_acc); [L912] RET, EXPR isMethaneLevelCritical() [L912] tmp = isMethaneLevelCritical() [L914] COND FALSE !(\read(tmp)) [L918] CALL, EXPR getWaterLevel() [L748] int retValue_acc ; [L751] retValue_acc = waterLevel [L752] return (retValue_acc); [L918] RET, EXPR getWaterLevel() [L918] tmp___0 = getWaterLevel() [L920] COND TRUE tmp___0 == 2 [L922] CALL, EXPR isPumpRunning() [L517] int retValue_acc ; [L520] retValue_acc = pumpRunning [L521] return (retValue_acc); [L922] RET, EXPR isPumpRunning() [L922] tmp___1 = isPumpRunning() [L924] COND FALSE !(\read(tmp___1)) [L928] CALL __automaton_fail() [L46] CALL reach_error() [L3] __assert_fail("0", "minepump_spec3_product36.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 635 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 26.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 21.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1233 SDtfs, 1996 SDslu, 1648 SDs, 0 SdLazy, 3454 SolverSat, 670 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 151 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 8.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1016occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 362 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...