/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:24:42,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:24:42,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:24:42,600 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:24:42,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:24:42,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:24:42,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:24:42,607 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:24:42,609 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:24:42,610 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:24:42,611 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:24:42,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:24:42,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:24:42,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:24:42,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:24:42,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:24:42,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:24:42,620 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:24:42,622 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:24:42,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:24:42,639 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:24:42,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:24:42,642 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:24:42,643 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:24:42,646 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:24:42,647 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:24:42,647 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:24:42,648 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:24:42,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:24:42,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:24:42,650 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:24:42,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:24:42,652 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:24:42,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:24:42,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:24:42,654 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:24:42,655 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:24:42,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:24:42,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:24:42,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:24:42,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:24:42,660 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:24:42,683 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:24:42,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:24:42,688 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:24:42,688 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:24:42,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:24:42,689 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:24:42,689 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:24:42,689 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:24:42,689 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:24:42,690 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:24:42,691 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:24:42,691 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:24:42,691 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:24:42,691 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:24:42,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:24:42,692 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:24:42,692 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:24:42,692 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:24:42,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:24:42,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:24:42,693 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:24:42,693 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:24:42,693 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:24:43,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:24:43,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:24:43,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:24:43,119 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:24:43,120 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:24:43,121 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product30.cil.c [2021-02-23 16:24:43,220 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84caf6abd/54caf520cbb44bcab79f32ebce8e2f29/FLAG77e00b29a [2021-02-23 16:24:43,931 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:24:43,932 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product30.cil.c [2021-02-23 16:24:43,950 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84caf6abd/54caf520cbb44bcab79f32ebce8e2f29/FLAG77e00b29a [2021-02-23 16:24:44,255 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84caf6abd/54caf520cbb44bcab79f32ebce8e2f29 [2021-02-23 16:24:44,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:24:44,274 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:24:44,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:24:44,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:24:44,285 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:24:44,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:24:44" (1/1) ... [2021-02-23 16:24:44,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60d1909d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:44, skipping insertion in model container [2021-02-23 16:24:44,288 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:24:44" (1/1) ... [2021-02-23 16:24:44,296 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:24:44,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:24:44,689 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product30.cil.c[17117,17130] [2021-02-23 16:24:44,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:24:44,729 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:24:44,876 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product30.cil.c[17117,17130] [2021-02-23 16:24:44,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:24:44,917 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:24:44,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:44 WrapperNode [2021-02-23 16:24:44,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:24:44,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:24:44,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:24:44,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:24:44,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:44" (1/1) ... [2021-02-23 16:24:44,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:44" (1/1) ... [2021-02-23 16:24:44,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:44" (1/1) ... [2021-02-23 16:24:44,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:44" (1/1) ... [2021-02-23 16:24:44,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:44" (1/1) ... [2021-02-23 16:24:44,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:44" (1/1) ... [2021-02-23 16:24:45,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:44" (1/1) ... [2021-02-23 16:24:45,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:24:45,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:24:45,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:24:45,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:24:45,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:44" (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 [2021-02-23 16:24:45,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:24:45,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:24:45,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:24:45,120 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:24:45,121 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:24:45,121 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:24:45,121 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:24:45,121 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:24:45,121 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:24:45,122 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:24:45,122 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-23 16:24:45,122 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:24:45,122 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:24:45,123 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:24:45,123 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:24:45,123 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:24:45,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:24:45,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:24:45,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:24:45,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:24:45,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:24:45,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:24:45,125 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:24:45,125 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:24:45,125 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:24:45,125 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-02-23 16:24:45,125 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:24:45,126 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2021-02-23 16:24:45,126 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:24:45,126 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:24:45,126 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:24:45,126 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:24:45,127 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:24:45,127 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-23 16:24:45,127 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-23 16:24:45,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:24:45,127 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:24:45,127 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:24:45,128 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:24:45,128 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:24:45,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-23 16:24:45,128 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:24:45,128 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:24:45,129 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:24:45,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:24:45,129 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:24:45,129 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:24:45,129 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:24:45,130 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:24:45,130 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:24:45,130 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:24:45,130 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:24:45,130 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:24:45,131 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-23 16:24:45,131 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:24:45,131 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:24:45,131 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:24:45,132 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:24:45,132 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:24:45,132 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:24:45,132 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:24:45,132 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:24:45,132 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:24:45,133 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:24:45,133 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:24:45,133 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:24:45,133 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:24:45,133 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:24:45,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:24:45,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:24:45,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:24:45,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:24:45,134 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:24:45,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:24:45,135 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:24:45,135 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:24:45,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:24:45,135 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:24:45,136 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:24:45,136 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:24:45,136 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-23 16:24:45,136 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:24:45,136 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:24:45,137 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:24:45,137 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-23 16:24:45,137 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:24:45,137 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:24:45,137 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-23 16:24:45,137 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-02-23 16:24:45,138 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:24:45,138 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2021-02-23 16:24:45,138 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:24:45,138 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:24:45,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:24:45,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:24:45,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:24:46,857 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:24:46,857 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:24:46,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:24:46 BoogieIcfgContainer [2021-02-23 16:24:46,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:24:46,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:24:46,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:24:46,866 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:24:46,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:24:44" (1/3) ... [2021-02-23 16:24:46,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e6c6c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:24:46, skipping insertion in model container [2021-02-23 16:24:46,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:44" (2/3) ... [2021-02-23 16:24:46,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e6c6c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:24:46, skipping insertion in model container [2021-02-23 16:24:46,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:24:46" (3/3) ... [2021-02-23 16:24:46,869 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product30.cil.c [2021-02-23 16:24:46,877 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:24:46,882 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:24:46,903 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:24:46,928 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:24:46,929 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:24:46,929 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:24:46,929 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:24:46,929 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:24:46,929 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:24:46,930 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:24:46,930 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:24:46,954 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states. [2021-02-23 16:24:46,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-23 16:24:46,976 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:24:46,977 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] [2021-02-23 16:24:46,978 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:24:46,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:24:46,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1591527055, now seen corresponding path program 1 times [2021-02-23 16:24:46,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:24:46,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084088838] [2021-02-23 16:24:46,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:24:47,071 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:24:47,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:47,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:47,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:47,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:47,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:48,105 WARN L202 SmtUtils]: Spent 573.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:24:48,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:24:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:48,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:48,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:48,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:24:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:48,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:48,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:48,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:24:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:48,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:48,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:48,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:24:48,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:48,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:48,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:48,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:24:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:48,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:48,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:48,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:24:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:48,281 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:48,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:48,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:24:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:48,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:48,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:48,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-23 16:24:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:48,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:48,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:48,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:24:48,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084088838] [2021-02-23 16:24:48,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:24:48,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:24:48,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769473407] [2021-02-23 16:24:48,356 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:24:48,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:24:48,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:24:48,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:24:48,377 INFO L87 Difference]: Start difference. First operand 326 states. Second operand 3 states. [2021-02-23 16:24:50,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:24:50,188 INFO L93 Difference]: Finished difference Result 492 states and 586 transitions. [2021-02-23 16:24:50,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:24:50,190 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-23 16:24:50,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:24:50,206 INFO L225 Difference]: With dead ends: 492 [2021-02-23 16:24:50,207 INFO L226 Difference]: Without dead ends: 306 [2021-02-23 16:24:50,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:24:50,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-02-23 16:24:50,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 264. [2021-02-23 16:24:50,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2021-02-23 16:24:50,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 287 transitions. [2021-02-23 16:24:50,402 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 287 transitions. Word has length 158 [2021-02-23 16:24:50,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:24:50,406 INFO L480 AbstractCegarLoop]: Abstraction has 264 states and 287 transitions. [2021-02-23 16:24:50,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:24:50,406 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 287 transitions. [2021-02-23 16:24:50,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-23 16:24:50,420 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:24:50,420 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] [2021-02-23 16:24:50,421 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:24:50,421 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:24:50,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:24:50,422 INFO L82 PathProgramCache]: Analyzing trace with hash -68019509, now seen corresponding path program 1 times [2021-02-23 16:24:50,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:24:50,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399196009] [2021-02-23 16:24:50,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:24:50,432 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:24:50,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:50,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:50,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:50,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:50,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:50,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:50,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:50,926 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:24:50,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:24:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:50,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:50,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:50,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:24:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:50,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:50,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:50,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:24:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:50,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:50,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:50,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:24:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:50,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:50,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:50,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:24:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:50,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:50,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:50,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-23 16:24:50,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:50,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:50,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:50,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:24:51,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:51,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:51,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:51,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-23 16:24:51,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:51,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:51,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:51,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:24:51,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399196009] [2021-02-23 16:24:51,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:24:51,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:24:51,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666250867] [2021-02-23 16:24:51,042 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:24:51,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:24:51,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:24:51,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:24:51,043 INFO L87 Difference]: Start difference. First operand 264 states and 287 transitions. Second operand 4 states. [2021-02-23 16:24:51,810 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:24:52,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:24:52,988 INFO L93 Difference]: Finished difference Result 404 states and 456 transitions. [2021-02-23 16:24:52,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:24:52,988 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-23 16:24:52,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:24:52,993 INFO L225 Difference]: With dead ends: 404 [2021-02-23 16:24:52,993 INFO L226 Difference]: Without dead ends: 289 [2021-02-23 16:24:52,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:24:52,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-02-23 16:24:53,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 254. [2021-02-23 16:24:53,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2021-02-23 16:24:53,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 274 transitions. [2021-02-23 16:24:53,099 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 274 transitions. Word has length 159 [2021-02-23 16:24:53,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:24:53,100 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 274 transitions. [2021-02-23 16:24:53,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:24:53,100 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 274 transitions. [2021-02-23 16:24:53,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-23 16:24:53,103 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:24:53,103 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] [2021-02-23 16:24:53,104 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:24:53,104 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:24:53,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:24:53,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1238661572, now seen corresponding path program 1 times [2021-02-23 16:24:53,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:24:53,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487991538] [2021-02-23 16:24:53,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:24:53,109 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:24:53,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:53,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:53,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:53,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:53,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:53,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:53,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:53,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:53,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:53,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:53,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:24:53,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:53,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:53,561 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:24:53,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:24:53,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:53,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:53,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:53,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:24:53,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:53,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:53,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:53,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:24:53,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:53,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:53,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:53,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:24:53,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:53,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:53,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:53,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:53,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:24:53,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:53,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:24:53,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:24:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:53,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:53,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:53,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:24:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:53,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:53,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:53,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-23 16:24:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:53,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:53,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:53,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-23 16:24:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:53,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:53,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:53,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-23 16:24:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:53,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:53,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:53,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:24:53,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487991538] [2021-02-23 16:24:53,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:24:53,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:24:53,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669352739] [2021-02-23 16:24:53,740 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:24:53,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:24:53,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:24:53,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:24:53,741 INFO L87 Difference]: Start difference. First operand 254 states and 274 transitions. Second operand 10 states. [2021-02-23 16:24:54,483 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:24:54,937 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:24:55,352 WARN L202 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:24:55,740 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:24:56,125 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:24:56,556 WARN L202 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:24:58,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:24:58,302 INFO L93 Difference]: Finished difference Result 450 states and 518 transitions. [2021-02-23 16:24:58,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:24:58,303 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-23 16:24:58,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:24:58,307 INFO L225 Difference]: With dead ends: 450 [2021-02-23 16:24:58,307 INFO L226 Difference]: Without dead ends: 311 [2021-02-23 16:24:58,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-23 16:24:58,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-02-23 16:24:58,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 254. [2021-02-23 16:24:58,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2021-02-23 16:24:58,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 273 transitions. [2021-02-23 16:24:58,423 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 273 transitions. Word has length 172 [2021-02-23 16:24:58,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:24:58,424 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 273 transitions. [2021-02-23 16:24:58,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:24:58,424 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 273 transitions. [2021-02-23 16:24:58,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-02-23 16:24:58,427 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:24:58,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:24:58,427 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:24:58,427 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:24:58,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:24:58,428 INFO L82 PathProgramCache]: Analyzing trace with hash -974345890, now seen corresponding path program 1 times [2021-02-23 16:24:58,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:24:58,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813306186] [2021-02-23 16:24:58,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:24:58,432 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:24:58,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:58,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:58,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:58,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:58,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:58,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:58,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:58,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:58,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:58,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:58,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:58,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:58,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:58,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:58,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:58,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:58,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:58,823 WARN L202 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:24:58,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:24:58,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:58,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:58,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:58,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:58,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:24:58,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:24:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:58,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:58,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:58,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:24:58,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:58,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:58,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:58,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:24:58,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:58,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:58,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:58,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:24:58,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:58,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:58,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:58,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:24:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:58,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:58,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:58,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:24:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:58,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:58,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:58,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:24:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:58,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:58,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:58,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:24:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:58,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:58,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:58,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-23 16:24:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:58,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:58,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:58,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-23 16:24:58,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:58,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:58,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:58,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:58,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:58,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:58,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:58,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-02-23 16:24:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:58,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:58,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:59,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:24:59,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813306186] [2021-02-23 16:24:59,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:24:59,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:24:59,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523146514] [2021-02-23 16:24:59,056 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:24:59,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:24:59,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:24:59,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:24:59,057 INFO L87 Difference]: Start difference. First operand 254 states and 273 transitions. Second operand 10 states. [2021-02-23 16:24:59,658 WARN L202 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:25:02,192 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:25:02,663 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:25:03,065 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:25:03,465 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:25:03,845 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:25:04,460 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:25:04,949 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:25:05,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:25:05,725 INFO L93 Difference]: Finished difference Result 694 states and 853 transitions. [2021-02-23 16:25:05,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-23 16:25:05,726 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 185 [2021-02-23 16:25:05,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:25:05,732 INFO L225 Difference]: With dead ends: 694 [2021-02-23 16:25:05,732 INFO L226 Difference]: Without dead ends: 555 [2021-02-23 16:25:05,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2021-02-23 16:25:05,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2021-02-23 16:25:05,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 387. [2021-02-23 16:25:05,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2021-02-23 16:25:05,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 429 transitions. [2021-02-23 16:25:05,939 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 429 transitions. Word has length 185 [2021-02-23 16:25:05,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:25:05,940 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 429 transitions. [2021-02-23 16:25:05,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:25:05,940 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 429 transitions. [2021-02-23 16:25:05,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-02-23 16:25:05,943 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:25:05,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:25:05,944 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:25:05,944 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:25:05,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:25:05,945 INFO L82 PathProgramCache]: Analyzing trace with hash -945997450, now seen corresponding path program 1 times [2021-02-23 16:25:05,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:25:05,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18378399] [2021-02-23 16:25:05,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:25:05,948 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:25:05,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:06,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:06,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:25:06,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:06,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:25:06,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:06,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:25:06,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:06,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:25:06,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:06,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:25:06,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:06,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:06,322 WARN L202 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:25:06,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:25:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:06,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:06,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:06,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:06,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:25:06,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:25:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:06,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:06,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:06,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:25:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:06,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:06,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:06,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:25:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:06,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:06,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:06,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:25:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:06,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:06,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:06,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:25:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:06,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:06,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:06,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:25:06,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:06,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:06,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:06,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-23 16:25:06,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:06,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:06,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:06,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:25:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:06,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:06,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:06,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:25:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:06,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:06,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:06,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-02-23 16:25:06,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:06,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:06,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:06,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-02-23 16:25:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:06,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:06,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:06,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-02-23 16:25:06,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:06,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:06,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:06,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:25:06,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18378399] [2021-02-23 16:25:06,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:25:06,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 16:25:06,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465954885] [2021-02-23 16:25:06,495 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 16:25:06,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:25:06,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 16:25:06,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-23 16:25:06,497 INFO L87 Difference]: Start difference. First operand 387 states and 429 transitions. Second operand 7 states. [2021-02-23 16:25:07,142 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:25:08,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:25:08,200 INFO L93 Difference]: Finished difference Result 619 states and 723 transitions. [2021-02-23 16:25:08,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:25:08,201 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2021-02-23 16:25:08,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:25:08,204 INFO L225 Difference]: With dead ends: 619 [2021-02-23 16:25:08,204 INFO L226 Difference]: Without dead ends: 347 [2021-02-23 16:25:08,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-02-23 16:25:08,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-02-23 16:25:08,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 281. [2021-02-23 16:25:08,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2021-02-23 16:25:08,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 296 transitions. [2021-02-23 16:25:08,330 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 296 transitions. Word has length 190 [2021-02-23 16:25:08,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:25:08,331 INFO L480 AbstractCegarLoop]: Abstraction has 281 states and 296 transitions. [2021-02-23 16:25:08,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 16:25:08,331 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 296 transitions. [2021-02-23 16:25:08,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-02-23 16:25:08,334 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:25:08,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:25:08,334 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:25:08,335 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:25:08,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:25:08,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1472450222, now seen corresponding path program 1 times [2021-02-23 16:25:08,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:25:08,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831157242] [2021-02-23 16:25:08,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:25:08,339 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:25:08,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:25:08,419 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:25:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:25:08,513 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:25:08,808 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 16:25:08,809 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 16:25:08,810 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 16:25:08,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:25:08 BoogieIcfgContainer [2021-02-23 16:25:08,834 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 16:25:08,836 INFO L168 Benchmark]: Toolchain (without parser) took 24574.96 ms. Allocated memory was 151.0 MB in the beginning and 420.5 MB in the end (delta: 269.5 MB). Free memory was 126.1 MB in the beginning and 298.3 MB in the end (delta: -172.2 MB). Peak memory consumption was 97.6 MB. Max. memory is 8.0 GB. [2021-02-23 16:25:08,836 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 125.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 16:25:08,837 INFO L168 Benchmark]: CACSL2BoogieTranslator took 638.27 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 104.0 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-23 16:25:08,837 INFO L168 Benchmark]: Boogie Preprocessor took 88.94 ms. Allocated memory is still 151.0 MB. Free memory was 104.0 MB in the beginning and 100.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-23 16:25:08,838 INFO L168 Benchmark]: RCFGBuilder took 1851.18 ms. Allocated memory was 151.0 MB in the beginning and 199.2 MB in the end (delta: 48.2 MB). Free memory was 100.0 MB in the beginning and 145.0 MB in the end (delta: -45.0 MB). Peak memory consumption was 35.0 MB. Max. memory is 8.0 GB. [2021-02-23 16:25:08,838 INFO L168 Benchmark]: TraceAbstraction took 21972.24 ms. Allocated memory was 199.2 MB in the beginning and 420.5 MB in the end (delta: 221.2 MB). Free memory was 144.4 MB in the beginning and 298.3 MB in the end (delta: -153.9 MB). Peak memory consumption was 66.8 MB. Max. memory is 8.0 GB. [2021-02-23 16:25:08,840 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 125.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 638.27 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 104.0 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 88.94 ms. Allocated memory is still 151.0 MB. Free memory was 104.0 MB in the beginning and 100.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1851.18 ms. Allocated memory was 151.0 MB in the beginning and 199.2 MB in the end (delta: 48.2 MB). Free memory was 100.0 MB in the beginning and 145.0 MB in the end (delta: -45.0 MB). Peak memory consumption was 35.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 21972.24 ms. Allocated memory was 199.2 MB in the beginning and 420.5 MB in the end (delta: 221.2 MB). Free memory was 144.4 MB in the beginning and 298.3 MB in the end (delta: -153.9 MB). Peak memory consumption was 66.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 885]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L49] int waterLevel = 1; [L50] int methaneLevelCritical = 0; [L138] int cleanupTimeShifts = 4; [L409] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L677] int pumpRunning = 0; [L678] int systemActive = 1; [L217] int retValue_acc ; [L218] int tmp ; [L222] FCALL select_helpers() [L223] FCALL select_features() [L224] CALL, EXPR valid_product() [L916] int retValue_acc ; [L919] retValue_acc = 1 [L920] return (retValue_acc); [L224] RET, EXPR valid_product() [L224] tmp = valid_product() [L226] COND TRUE \read(tmp) [L228] FCALL setup() [L229] CALL runTest() [L208] CALL test() [L608] int splverifierCounter ; [L609] int tmp ; [L610] int tmp___0 ; [L611] int tmp___1 ; [L612] int tmp___2 ; [L615] splverifierCounter = 0 [L617] COND TRUE 1 [L619] COND TRUE splverifierCounter < 4 [L625] tmp = __VERIFIER_nondet_int() [L627] COND TRUE \read(tmp) [L629] CALL waterRise() [L67] COND TRUE waterLevel < 2 [L68] waterLevel = waterLevel + 1 [L629] RET waterRise() [L635] tmp___0 = __VERIFIER_nondet_int() [L637] COND FALSE !(\read(tmp___0)) [L645] tmp___2 = __VERIFIER_nondet_int() [L647] COND TRUE \read(tmp___2) [L649] CALL startSystem() [L876] systemActive = 1 [L649] RET startSystem() [L662] CALL timeShift() [L685] COND FALSE !(\read(pumpRunning)) [L692] COND TRUE \read(systemActive) [L694] CALL processEnvironment() [L740] int tmp ; [L743] COND FALSE !(\read(pumpRunning)) [L758] CALL processEnvironment__wrappee__methaneQuery() [L714] int tmp ; [L717] COND FALSE !(\read(pumpRunning)) [L732] FCALL processEnvironment__wrappee__base() [L758] RET processEnvironment__wrappee__methaneQuery() [L694] RET processEnvironment() [L700] CALL __utac_acc__Specification3_spec__1() [L926] int tmp ; [L927] int tmp___0 ; [L928] int tmp___1 ; [L932] CALL, EXPR isMethaneLevelCritical() [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); [L932] RET, EXPR isMethaneLevelCritical() [L932] tmp = isMethaneLevelCritical() [L934] COND FALSE !(\read(tmp)) [L938] CALL, EXPR getWaterLevel() [L120] int retValue_acc ; [L123] retValue_acc = waterLevel [L124] return (retValue_acc); [L938] RET, EXPR getWaterLevel() [L938] tmp___0 = getWaterLevel() [L940] COND TRUE tmp___0 == 2 [L942] CALL, EXPR isPumpRunning() [L809] int retValue_acc ; [L812] retValue_acc = pumpRunning [L813] return (retValue_acc); [L942] RET, EXPR isPumpRunning() [L942] tmp___1 = isPumpRunning() [L944] COND FALSE !(\read(tmp___1)) [L948] CALL __automaton_fail() [L885] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 643 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 21.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 16.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1156 SDtfs, 2122 SDslu, 1438 SDs, 0 SdLazy, 3032 SolverSat, 685 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 168 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 7.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=387occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 5 MinimizatonAttempts, 368 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...