/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_spec4_product16.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:02:25,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:02:25,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:02:25,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:02:25,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:02:25,219 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:02:25,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:02:25,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:02:25,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:02:25,230 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:02:25,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:02:25,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:02:25,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:02:25,235 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:02:25,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:02:25,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:02:25,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:02:25,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:02:25,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:02:25,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:02:25,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:02:25,266 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:02:25,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:02:25,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:02:25,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:02:25,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:02:25,278 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:02:25,282 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:02:25,283 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:02:25,284 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:02:25,285 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:02:25,286 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:02:25,288 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:02:25,289 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:02:25,290 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:02:25,290 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:02:25,291 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:02:25,291 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:02:25,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:02:25,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:02:25,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:02:25,295 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:02:25,317 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:02:25,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:02:25,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:02:25,322 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:02:25,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:02:25,322 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:02:25,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:02:25,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:02:25,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:02:25,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:02:25,324 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:02:25,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:02:25,325 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:02:25,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:02:25,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:02:25,325 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:02:25,325 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:02:25,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:02:25,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:02:25,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:02:25,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:02:25,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:02:25,326 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:02:25,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:02:25,719 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:02:25,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:02:25,724 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:02:25,725 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:02:25,726 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product16.cil.c [2020-10-23 20:02:25,812 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a4101a79/770bed18ca1d4518a133e0df42c50c53/FLAG8312ef4e9 [2020-10-23 20:02:26,502 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:02:26,504 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product16.cil.c [2020-10-23 20:02:26,524 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a4101a79/770bed18ca1d4518a133e0df42c50c53/FLAG8312ef4e9 [2020-10-23 20:02:26,809 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a4101a79/770bed18ca1d4518a133e0df42c50c53 [2020-10-23 20:02:26,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:02:26,820 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:02:26,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:02:26,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:02:26,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:02:26,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:02:26" (1/1) ... [2020-10-23 20:02:26,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cf859b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:02:26, skipping insertion in model container [2020-10-23 20:02:26,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:02:26" (1/1) ... [2020-10-23 20:02:26,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:02:26,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:02:27,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:02:27,293 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:02:27,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:02:27,431 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:02:27,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:02:27 WrapperNode [2020-10-23 20:02:27,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:02:27,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:02:27,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:02:27,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:02:27,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:02:27" (1/1) ... [2020-10-23 20:02:27,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:02:27" (1/1) ... [2020-10-23 20:02:27,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:02:27" (1/1) ... [2020-10-23 20:02:27,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:02:27" (1/1) ... [2020-10-23 20:02:27,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:02:27" (1/1) ... [2020-10-23 20:02:27,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:02:27" (1/1) ... [2020-10-23 20:02:27,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:02:27" (1/1) ... [2020-10-23 20:02:27,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:02:27,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:02:27,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:02:27,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:02:27,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:02:27" (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 [2020-10-23 20:02:27,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:02:27,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:02:27,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 20:02:27,622 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:02:27,622 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 20:02:27,622 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 20:02:27,622 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 20:02:27,623 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 20:02:27,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 20:02:27,665 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 20:02:27,665 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 20:02:27,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 20:02:27,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 20:02:27,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 20:02:27,666 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 20:02:27,666 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 20:02:27,666 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 20:02:27,667 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 20:02:27,667 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 20:02:27,667 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 20:02:27,667 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 20:02:27,667 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 20:02:27,668 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 20:02:27,668 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 20:02:27,668 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:02:27,668 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 20:02:27,668 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 20:02:27,668 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-10-23 20:02:27,668 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 20:02:27,669 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2020-10-23 20:02:27,669 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 20:02:27,669 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 20:02:27,669 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 20:02:27,669 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 20:02:27,669 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 20:02:27,670 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-10-23 20:02:27,670 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-10-23 20:02:27,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-10-23 20:02:27,677 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 20:02:27,678 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:02:27,678 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:02:27,678 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:02:27,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:02:27,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:02:27,678 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 20:02:27,679 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 20:02:27,679 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 20:02:27,679 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 20:02:27,682 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 20:02:27,682 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:02:27,682 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:02:27,682 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 20:02:27,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:02:27,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:02:27,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:02:27,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:02:27,683 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 20:02:27,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:02:27,683 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 20:02:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 20:02:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:02:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 20:02:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 20:02:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 20:02:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 20:02:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 20:02:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 20:02:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 20:02:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 20:02:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 20:02:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 20:02:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 20:02:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 20:02:27,688 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 20:02:27,688 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 20:02:27,688 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 20:02:27,688 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 20:02:27,689 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:02:27,689 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 20:02:27,689 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 20:02:27,689 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 20:02:27,689 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 20:02:27,689 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-10-23 20:02:27,689 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-10-23 20:02:27,690 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-10-23 20:02:27,690 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 20:02:27,693 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-10-23 20:02:27,693 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 20:02:27,693 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2020-10-23 20:02:27,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:02:27,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:02:27,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:02:28,974 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:02:28,975 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 20:02:28,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:02:28 BoogieIcfgContainer [2020-10-23 20:02:28,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:02:28,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:02:28,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:02:28,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:02:28,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:02:26" (1/3) ... [2020-10-23 20:02:28,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60fbc981 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:02:28, skipping insertion in model container [2020-10-23 20:02:28,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:02:27" (2/3) ... [2020-10-23 20:02:28,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60fbc981 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:02:28, skipping insertion in model container [2020-10-23 20:02:28,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:02:28" (3/3) ... [2020-10-23 20:02:28,986 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product16.cil.c [2020-10-23 20:02:28,998 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:02:29,004 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 20:02:29,018 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 20:02:29,042 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:02:29,042 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:02:29,042 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:02:29,042 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:02:29,043 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:02:29,043 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:02:29,043 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:02:29,043 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:02:29,066 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-23 20:02:29,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-23 20:02:29,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:02:29,087 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] [2020-10-23 20:02:29,087 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]=== [2020-10-23 20:02:29,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:02:29,094 INFO L82 PathProgramCache]: Analyzing trace with hash -306184297, now seen corresponding path program 1 times [2020-10-23 20:02:29,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:02:29,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054325122] [2020-10-23 20:02:29,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:02:29,175 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:02:29,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:30,006 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:02:30,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:02:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:30,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:02:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:30,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:02:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:30,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:02:30,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:30,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:02:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:30,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 20:02:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:30,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:02:30,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:30,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:02:30,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2054325122] [2020-10-23 20:02:30,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:02:30,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 20:02:30,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688000138] [2020-10-23 20:02:30,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 20:02:30,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:02:30,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 20:02:30,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 20:02:30,315 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-23 20:02:32,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:02:32,017 INFO L93 Difference]: Finished difference Result 434 states and 519 transitions. [2020-10-23 20:02:32,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 20:02:32,019 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-10-23 20:02:32,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:02:32,046 INFO L225 Difference]: With dead ends: 434 [2020-10-23 20:02:32,046 INFO L226 Difference]: Without dead ends: 276 [2020-10-23 20:02:32,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 20:02:32,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-10-23 20:02:32,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 234. [2020-10-23 20:02:32,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-10-23 20:02:32,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 252 transitions. [2020-10-23 20:02:32,235 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 252 transitions. Word has length 148 [2020-10-23 20:02:32,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:02:32,236 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 252 transitions. [2020-10-23 20:02:32,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 20:02:32,236 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 252 transitions. [2020-10-23 20:02:32,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-23 20:02:32,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:02:32,241 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] [2020-10-23 20:02:32,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:02:32,242 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]=== [2020-10-23 20:02:32,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:02:32,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1303045419, now seen corresponding path program 1 times [2020-10-23 20:02:32,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:02:32,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167662052] [2020-10-23 20:02:32,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:02:32,248 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:02:32,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:32,762 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:02:32,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:02:32,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:32,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:02:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:32,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:02:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:32,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:02:32,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:32,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:02:32,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:32,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:02:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:32,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 20:02:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:32,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:02:32,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167662052] [2020-10-23 20:02:32,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:02:32,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:02:32,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325197050] [2020-10-23 20:02:32,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:02:32,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:02:32,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:02:32,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:02:32,887 INFO L87 Difference]: Start difference. First operand 234 states and 252 transitions. Second operand 4 states. [2020-10-23 20:02:33,681 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:02:34,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:02:34,632 INFO L93 Difference]: Finished difference Result 338 states and 378 transitions. [2020-10-23 20:02:34,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 20:02:34,633 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-23 20:02:34,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:02:34,640 INFO L225 Difference]: With dead ends: 338 [2020-10-23 20:02:34,640 INFO L226 Difference]: Without dead ends: 259 [2020-10-23 20:02:34,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:02:34,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-10-23 20:02:34,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 224. [2020-10-23 20:02:34,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-10-23 20:02:34,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 239 transitions. [2020-10-23 20:02:34,730 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 239 transitions. Word has length 149 [2020-10-23 20:02:34,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:02:34,730 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 239 transitions. [2020-10-23 20:02:34,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:02:34,731 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 239 transitions. [2020-10-23 20:02:34,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-23 20:02:34,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:02:34,733 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] [2020-10-23 20:02:34,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:02:34,734 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]=== [2020-10-23 20:02:34,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:02:34,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1290790977, now seen corresponding path program 1 times [2020-10-23 20:02:34,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:02:34,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924512513] [2020-10-23 20:02:34,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:02:34,739 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:02:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:35,211 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:02:35,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:02:35,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:35,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:02:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:35,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:02:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:35,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:02:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:35,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:02:35,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:35,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 20:02:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:35,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:02:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:35,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:02:35,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:35,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:02:35,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924512513] [2020-10-23 20:02:35,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:02:35,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:02:35,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079637816] [2020-10-23 20:02:35,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:02:35,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:02:35,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:02:35,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:02:35,374 INFO L87 Difference]: Start difference. First operand 224 states and 239 transitions. Second operand 10 states. [2020-10-23 20:02:36,111 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:02:36,560 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:02:36,965 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:02:37,333 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:02:37,707 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:02:38,082 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:02:39,195 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:02:41,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:02:41,447 INFO L93 Difference]: Finished difference Result 594 states and 692 transitions. [2020-10-23 20:02:41,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 20:02:41,453 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 162 [2020-10-23 20:02:41,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:02:41,459 INFO L225 Difference]: With dead ends: 594 [2020-10-23 20:02:41,459 INFO L226 Difference]: Without dead ends: 485 [2020-10-23 20:02:41,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-23 20:02:41,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-10-23 20:02:41,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 392. [2020-10-23 20:02:41,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-10-23 20:02:41,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 436 transitions. [2020-10-23 20:02:41,660 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 436 transitions. Word has length 162 [2020-10-23 20:02:41,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:02:41,661 INFO L481 AbstractCegarLoop]: Abstraction has 392 states and 436 transitions. [2020-10-23 20:02:41,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:02:41,661 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 436 transitions. [2020-10-23 20:02:41,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-23 20:02:41,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:02:41,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:02:41,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:02:41,665 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]=== [2020-10-23 20:02:41,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:02:41,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1693645113, now seen corresponding path program 1 times [2020-10-23 20:02:41,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:02:41,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406763483] [2020-10-23 20:02:41,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:02:41,669 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:02:41,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:42,113 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:02:42,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:02:42,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:42,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:02:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:42,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:02:42,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:42,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:02:42,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:42,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:02:42,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:42,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-23 20:02:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:42,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 20:02:42,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:42,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 20:02:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:42,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:02:42,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406763483] [2020-10-23 20:02:42,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:02:42,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 20:02:42,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972918148] [2020-10-23 20:02:42,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 20:02:42,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:02:42,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 20:02:42,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:02:42,371 INFO L87 Difference]: Start difference. First operand 392 states and 436 transitions. Second operand 14 states. [2020-10-23 20:02:43,042 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:02:43,571 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:02:44,024 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:02:44,430 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:02:44,825 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:02:45,202 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:02:46,049 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:02:47,399 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:02:47,818 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:02:48,327 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:02:48,750 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:02:49,134 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:02:49,518 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:02:49,886 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:02:50,255 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:02:50,624 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:02:51,063 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:02:51,531 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:02:51,976 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:02:52,444 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:02:54,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:02:54,178 INFO L93 Difference]: Finished difference Result 1297 states and 1596 transitions. [2020-10-23 20:02:54,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-23 20:02:54,179 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 167 [2020-10-23 20:02:54,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:02:54,188 INFO L225 Difference]: With dead ends: 1297 [2020-10-23 20:02:54,189 INFO L226 Difference]: Without dead ends: 1020 [2020-10-23 20:02:54,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2020-10-23 20:02:54,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2020-10-23 20:02:54,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 881. [2020-10-23 20:02:54,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 881 states. [2020-10-23 20:02:54,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1017 transitions. [2020-10-23 20:02:54,573 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1017 transitions. Word has length 167 [2020-10-23 20:02:54,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:02:54,574 INFO L481 AbstractCegarLoop]: Abstraction has 881 states and 1017 transitions. [2020-10-23 20:02:54,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 20:02:54,574 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1017 transitions. [2020-10-23 20:02:54,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-23 20:02:54,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:02:54,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:02:54,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:02:54,579 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]=== [2020-10-23 20:02:54,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:02:54,580 INFO L82 PathProgramCache]: Analyzing trace with hash -747837857, now seen corresponding path program 1 times [2020-10-23 20:02:54,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:02:54,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403654603] [2020-10-23 20:02:54,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:02:54,584 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:02:54,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:54,980 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:02:54,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:02:55,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:55,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:02:55,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:55,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:02:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:55,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:02:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:55,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:02:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:55,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-23 20:02:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:55,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 20:02:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:55,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:02:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:55,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-23 20:02:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:02:55,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:02:55,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403654603] [2020-10-23 20:02:55,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:02:55,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 20:02:55,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443860008] [2020-10-23 20:02:55,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 20:02:55,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:02:55,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 20:02:55,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-23 20:02:55,144 INFO L87 Difference]: Start difference. First operand 881 states and 1017 transitions. Second operand 6 states. [2020-10-23 20:02:55,754 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:02:57,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:02:57,207 INFO L93 Difference]: Finished difference Result 1525 states and 1838 transitions. [2020-10-23 20:02:57,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 20:02:57,207 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2020-10-23 20:02:57,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:02:57,213 INFO L225 Difference]: With dead ends: 1525 [2020-10-23 20:02:57,213 INFO L226 Difference]: Without dead ends: 759 [2020-10-23 20:02:57,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:02:57,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2020-10-23 20:02:57,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 656. [2020-10-23 20:02:57,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 656 states. [2020-10-23 20:02:57,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 715 transitions. [2020-10-23 20:02:57,570 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 715 transitions. Word has length 172 [2020-10-23 20:02:57,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:02:57,570 INFO L481 AbstractCegarLoop]: Abstraction has 656 states and 715 transitions. [2020-10-23 20:02:57,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 20:02:57,571 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 715 transitions. [2020-10-23 20:02:57,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-23 20:02:57,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:02:57,575 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:02:57,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:02:57,576 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]=== [2020-10-23 20:02:57,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:02:57,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1982388141, now seen corresponding path program 1 times [2020-10-23 20:02:57,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:02:57,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052087749] [2020-10-23 20:02:57,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:02:57,736 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-23 20:02:58,018 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-23 20:02:58,244 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-23 20:02:58,474 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-23 20:02:58,725 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-23 20:02:58,974 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-23 20:02:59,217 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-23 20:02:59,455 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-23 20:02:59,683 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-23 20:02:59,930 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-23 20:03:00,169 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-23 20:03:00,408 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-23 20:03:00,654 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-23 20:03:00,900 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-23 20:03:01,154 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-23 20:03:01,390 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-23 20:03:01,620 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-23 20:03:01,847 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-23 20:03:04,616 WARN L193 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:03:04,635 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:03:05,683 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 173 [2020-10-23 20:03:05,695 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:03:06,930 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 173 [2020-10-23 20:03:06,937 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:03:09,414 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:03:09,420 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:03:11,950 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:03:11,956 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:03:14,460 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:03:14,465 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:03:15,794 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 173 [2020-10-23 20:03:15,800 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:03:18,329 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 173 [2020-10-23 20:03:18,334 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:03:18,339 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:03:18,659 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 113 [2020-10-23 20:03:18,982 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-23 20:03:19,298 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:03:19,607 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 114 [2020-10-23 20:03:19,953 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 113 [2020-10-23 20:03:20,277 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 114 [2020-10-23 20:03:20,598 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:03:20,919 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:03:20,922 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:03:21,239 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:03:21,562 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-23 20:03:21,890 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:03:22,218 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:03:22,553 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-23 20:03:22,882 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:03:23,201 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-23 20:03:23,514 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:03:23,516 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:03:23,854 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 117 [2020-10-23 20:03:24,178 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:03:24,500 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 117 [2020-10-23 20:03:24,853 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 117 [2020-10-23 20:03:25,187 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:03:25,515 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 117 [2020-10-23 20:03:25,843 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:03:26,174 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:03:26,177 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:03:28,764 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:03:28,769 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:03:29,951 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:03:32,503 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:03:35,010 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:03:35,014 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:03:37,522 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:03:40,010 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:03:40,015 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:03:42,511 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:03:42,516 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:03:45,003 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:03:45,008 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:03:45,012 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:03:47,469 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 167 [2020-10-23 20:03:47,474 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:03:49,911 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:03:52,347 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 164 [2020-10-23 20:03:52,350 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:03:54,842 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 167 [2020-10-23 20:03:54,846 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:03:57,352 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 166 [2020-10-23 20:03:59,799 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:03:59,803 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:04:02,284 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 167 [2020-10-23 20:04:04,730 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:04:04,735 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:04:04,739 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:04:05,878 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:04:08,356 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2020-10-23 20:04:08,359 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:04:10,930 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:04:10,934 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:04:13,404 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2020-10-23 20:04:13,409 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:04:14,788 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:04:14,793 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:04:17,359 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:04:17,364 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:04:19,874 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2020-10-23 20:04:22,363 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2020-10-23 20:04:22,367 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:04:22,371 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:04:24,836 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:04:24,840 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:04:27,359 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 167 [2020-10-23 20:04:27,362 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:04:29,901 WARN L193 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 167 [2020-10-23 20:04:29,908 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:04:32,477 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 166 [2020-10-23 20:04:32,480 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:04:34,969 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:04:34,973 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:04:37,506 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 164 [2020-10-23 20:04:37,511 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:04:40,074 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 167 [2020-10-23 20:04:42,571 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:04:42,575 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:04:42,578 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:04:42,922 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 117 [2020-10-23 20:04:43,273 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:04:43,643 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:04:44,019 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 117 [2020-10-23 20:04:44,387 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:04:44,731 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 117 [2020-10-23 20:04:45,082 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:04:45,448 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 117 [2020-10-23 20:04:45,450 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:04:48,088 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:04:48,092 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:04:50,748 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:04:52,671 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:04:52,675 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:04:55,270 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:04:55,274 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:04:56,902 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:04:56,905 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:04:59,435 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:05:01,972 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:05:01,976 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:05:04,549 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:05:04,554 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:05:04,899 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:05:05,253 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:05:05,601 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:05:05,951 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:05:06,303 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:05:06,655 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:05:07,004 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:05:07,357 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:05:07,359 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:05:09,907 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:05:09,912 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:05:12,481 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:05:12,484 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:05:15,084 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:05:15,087 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:05:17,636 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:05:17,639 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:05:20,243 WARN L193 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:05:22,426 WARN L193 SmtUtils]: Spent 594.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:05:22,430 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:05:24,031 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:05:24,035 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:05:26,768 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:05:26,772 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:05:26,774 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:05:29,399 WARN L193 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:05:29,403 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:05:31,130 WARN L193 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:05:31,134 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:05:33,748 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:05:33,753 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:05:36,374 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:05:38,937 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:05:38,941 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:05:41,534 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:05:41,537 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:05:44,137 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:05:44,142 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:05:46,766 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:05:46,769 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:05:46,773 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:05:49,367 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 167 [2020-10-23 20:05:49,371 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:05:51,455 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 169 [2020-10-23 20:05:54,037 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 167 [2020-10-23 20:05:54,040 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:05:56,649 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 167 [2020-10-23 20:05:56,653 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:05:59,324 WARN L193 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 169 [2020-10-23 20:05:59,328 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:06:02,525 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 167 [2020-10-23 20:06:02,528 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:06:05,171 WARN L193 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 169 [2020-10-23 20:06:05,174 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:06:07,798 WARN L193 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 169 [2020-10-23 20:06:07,800 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:06:07,802 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:06:10,488 WARN L193 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:06:13,176 WARN L193 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:06:13,179 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:06:15,912 WARN L193 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:06:15,915 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:06:18,251 WARN L193 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:06:18,254 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:06:20,997 WARN L193 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:06:21,001 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:06:23,425 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:06:23,429 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:06:26,136 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:06:26,140 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:06:28,748 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:06:28,751 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:06:28,753 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:06:29,111 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 113 [2020-10-23 20:06:29,453 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:06:29,794 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:06:30,138 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-23 20:06:30,489 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:06:30,830 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 114 [2020-10-23 20:06:31,177 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 114 [2020-10-23 20:06:31,523 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 113 [2020-10-23 20:06:31,526 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:06:34,071 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 162 [2020-10-23 20:06:36,670 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:06:36,673 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:06:39,230 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2020-10-23 20:06:41,843 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 164 [2020-10-23 20:06:41,847 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:06:44,451 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:06:47,027 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2020-10-23 20:06:49,662 WARN L193 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:06:49,665 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:06:52,231 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2020-10-23 20:06:52,235 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:06:52,238 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:06:54,829 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:06:54,832 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:06:57,523 WARN L193 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 173 [2020-10-23 20:06:57,526 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:07:00,152 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:07:00,155 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:07:02,755 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:07:05,370 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:07:05,375 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:07:08,046 WARN L193 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 173 [2020-10-23 20:07:08,050 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:07:10,712 WARN L193 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 173 [2020-10-23 20:07:10,715 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:07:13,357 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 173 [2020-10-23 20:07:13,361 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:07:13,364 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:07:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:07:13,832 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:07:14,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:07:14,321 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:07:14,598 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:07:14,598 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:07:14,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:07:14,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:07:14 BoogieIcfgContainer [2020-10-23 20:07:14,645 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:07:14,646 INFO L168 Benchmark]: Toolchain (without parser) took 287831.62 ms. Allocated memory was 151.0 MB in the beginning and 660.6 MB in the end (delta: 509.6 MB). Free memory was 126.0 MB in the beginning and 291.4 MB in the end (delta: -165.4 MB). Peak memory consumption was 345.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:07:14,646 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 125.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:07:14,648 INFO L168 Benchmark]: CACSL2BoogieTranslator took 610.70 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 104.4 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:07:14,649 INFO L168 Benchmark]: Boogie Preprocessor took 99.16 ms. Allocated memory is still 151.0 MB. Free memory was 104.4 MB in the beginning and 100.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:07:14,649 INFO L168 Benchmark]: RCFGBuilder took 1443.94 ms. Allocated memory was 151.0 MB in the beginning and 191.9 MB in the end (delta: 40.9 MB). Free memory was 100.5 MB in the beginning and 129.0 MB in the end (delta: -28.5 MB). Peak memory consumption was 27.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:07:14,655 INFO L168 Benchmark]: TraceAbstraction took 285665.53 ms. Allocated memory was 191.9 MB in the beginning and 660.6 MB in the end (delta: 468.7 MB). Free memory was 128.4 MB in the beginning and 291.4 MB in the end (delta: -162.9 MB). Peak memory consumption was 305.8 MB. Max. memory is 8.0 GB. [2020-10-23 20:07:14,662 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 125.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 610.70 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 104.4 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 99.16 ms. Allocated memory is still 151.0 MB. Free memory was 104.4 MB in the beginning and 100.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1443.94 ms. Allocated memory was 151.0 MB in the beginning and 191.9 MB in the end (delta: 40.9 MB). Free memory was 100.5 MB in the beginning and 129.0 MB in the end (delta: -28.5 MB). Peak memory consumption was 27.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 285665.53 ms. Allocated memory was 191.9 MB in the beginning and 660.6 MB in the end (delta: 468.7 MB). Free memory was 128.4 MB in the beginning and 291.4 MB in the end (delta: -162.9 MB). Peak memory consumption was 305.8 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: [L249] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L452] int waterLevel = 1; [L453] int methaneLevelCritical = 0; [L532] int cleanupTimeShifts = 4; [L645] int pumpRunning = 0; [L646] int systemActive = 1; [L608] int retValue_acc ; [L609] int tmp ; [L613] FCALL select_helpers() [L614] FCALL select_features() [L615] CALL, EXPR valid_product() [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L615] RET, EXPR valid_product() [L615] tmp = valid_product() [L617] COND TRUE \read(tmp) [L619] FCALL setup() [L620] CALL runTest() [L602] CALL test() [L846] int splverifierCounter ; [L847] int tmp ; [L848] int tmp___0 ; [L849] int tmp___1 ; [L850] int tmp___2 ; [L853] splverifierCounter = 0 [L855] COND TRUE 1 [L857] COND TRUE splverifierCounter < 4 [L863] tmp = __VERIFIER_nondet_int() [L865] COND TRUE \read(tmp) [L867] CALL waterRise() [L470] COND TRUE waterLevel < 2 [L471] waterLevel = waterLevel + 1 [L867] RET waterRise() [L873] tmp___0 = __VERIFIER_nondet_int() [L875] COND FALSE !(\read(tmp___0)) [L883] tmp___2 = __VERIFIER_nondet_int() [L885] COND FALSE !(\read(tmp___2)) [L891] tmp___1 = __VERIFIER_nondet_int() [L893] COND TRUE \read(tmp___1) [L895] CALL stopSystem() [L799] COND FALSE !(\read(pumpRunning)) [L806] systemActive = 0 [L895] RET stopSystem() [L902] CALL timeShift() [L653] COND FALSE !(\read(pumpRunning)) [L660] COND FALSE !(\read(systemActive)) [L668] CALL __utac_acc__Specification4_spec__1() [L820] int tmp ; [L821] int tmp___0 ; [L825] CALL, EXPR getWaterLevel() [L523] int retValue_acc ; [L526] retValue_acc = waterLevel [L527] return (retValue_acc); [L825] RET, EXPR getWaterLevel() [L825] tmp = getWaterLevel() [L827] COND FALSE !(tmp == 0) [L668] RET __utac_acc__Specification4_spec__1() [L902] RET timeShift() [L855] COND TRUE 1 [L857] COND TRUE splverifierCounter < 4 [L863] tmp = __VERIFIER_nondet_int() [L865] COND TRUE \read(tmp) [L867] CALL waterRise() [L470] COND TRUE waterLevel < 2 [L471] waterLevel = waterLevel + 1 [L867] RET waterRise() [L873] tmp___0 = __VERIFIER_nondet_int() [L875] COND FALSE !(\read(tmp___0)) [L883] tmp___2 = __VERIFIER_nondet_int() [L885] COND FALSE !(\read(tmp___2)) [L891] tmp___1 = __VERIFIER_nondet_int() [L893] COND FALSE !(\read(tmp___1)) [L902] CALL timeShift() [L653] COND FALSE !(\read(pumpRunning)) [L660] COND FALSE !(\read(systemActive)) [L668] CALL __utac_acc__Specification4_spec__1() [L820] int tmp ; [L821] int tmp___0 ; [L825] CALL, EXPR getWaterLevel() [L523] int retValue_acc ; [L526] retValue_acc = waterLevel [L527] return (retValue_acc); [L825] RET, EXPR getWaterLevel() [L825] tmp = getWaterLevel() [L827] COND TRUE tmp == 0 [L829] CALL, EXPR isPumpRunning() [L751] int retValue_acc ; [L754] retValue_acc = pumpRunning [L755] return (retValue_acc); [L829] RET, EXPR isPumpRunning() [L829] tmp___0 = isPumpRunning() [L831] COND TRUE \read(tmp___0) [L833] CALL __automaton_fail() [L635] CALL reach_error() [L3] __assert_fail("0", "minepump_spec4_product16.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 616 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 285.5s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 23.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1080 SDtfs, 1757 SDslu, 2219 SDs, 0 SdLazy, 3920 SolverSat, 629 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 159 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 12.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=881occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 412 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...